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Journal articles on the topic 'Lateral incisor'
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1
Baral, Radha, Dipshikha Bajracharya, Bidhata Ojha, and Ganesh Silwal. "Prevalence of Congenitally Missing Lateral Incisors and Peg Laterals in Patients Receiving Orthodontic Treatment." Orthodontic Journal of Nepal 10, no. 1 (September 4, 2020): 17–20. http://dx.doi.org/10.3126/ojn.v10i1.30998.
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Introduction: Maxillary lateral incisor is a common congenitally missing tooth in the oral cavity. Maxillary lateral incisor is also the most common varying tooth in form than any other tooth. The objective of the study is to estimate the prevalence of congenitally missing maxillary lateral incisors and peg laterals in patients receiving orthodontic treatment.
Materials & Method: This is a cross sectional retrospective study carried out among 204 orthodontic patients. Panoramic radiographs taken during the diagnostic procedure of orthodontic treatment was used to confirm the presence or absence of lateral incisors. The presence of peg laterals was determined by dental casts.
Result: Prevalence of missing maxillary lateral incisors and peg laterals was found 2.5% and 3.9% respectively. Prevalence of missing lateral in male was 5.7% while among female no missing laterals were observed. Prevalence of peg laterals in male and female was 1.1% and 6% respectively. Among the missing lateral incisors, prevalence of bilaterally missing lateral incisors was 60% while prevalence of both right and left unilateral missing laterals was 20%. Among the peg laterals, bilateral peg laterals were present in 50% patients, followed by left unilateral 37.5% and right unilateral 12.5% peg laterals.
Conclusion: The present study shows higher prevalence of peg laterals than missing lateral incisors. Prevalence of missing lateral incisors was higher in male and prevalence of peg laterals was higher in female. Prevalence of bilaterally missing laterals and bilateral peg laterals was higher than unilateral presentation.
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Mostafa, Nesrine Z., Anthony P. G. McCullagh, and David B. Kennedy. "Management of a Class I malocclusion with traumatically avulsed maxillary central and lateral incisors." Angle Orthodontist 89, no. 4 (August 24, 2018): 661–71. http://dx.doi.org/10.2319/102417-723.1.
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ABSTRACT This case report describes orthodontic space closure for managing an avulsed maxillary central incisor and a lateral incisor in a growing girl with a Class I deep bite malocclusion with moderate lower and mild upper crowding. The treatment approach moved a central incisor across the midline and substituted a lateral incisor for a central incisor, in combination with canine substitution. Veneers on all maxillary anterior teeth attained acceptable esthetics. The right central incisor was moved to serve as the avulsed left central incisor. The right lateral incisor was moved to the position of the right central incisor and restored. The canines on both sides were substituted as lateral incisors; the posterior occlusion was left in Class II. Mesialization of central and lateral incisors with prosthetic rehabilitation is an acceptable treatment option.
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Huma Iftekhar, Boris Saha, and Surendra K Mishra. "TWO ROOTED MAXILLARY LATERAL INCISOR." UNIVERSITY JOURNAL OF DENTAL SCIENCES 6, no. 1 (July 14, 2020): 72–74. http://dx.doi.org/10.21276/ujds.2020.6.1.18.
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Maxillary lateral incisors are generally considered as a tooth with a single root and single canal. This is not true in all cases as case reports have advocated maxillary lateral incisors showing two roots with two or three root canals, Thorough knowledge of the internal and external dental anatomy and its variations is essential for a successful endodontic treatment. This case report deals with the periapical surgery in a two rooted maxillary lateral incisor along with the central incisor.
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Mossey, P. A., H. M. Campbell, and J. K. Luffingham. "The Palatal Canine and the Adjacent Lateral Incisor: A Study of a West of Scotland Population." British Journal of Orthodontics 21, no. 2 (May 1994): 169–74. http://dx.doi.org/10.1179/bjo.21.2.169.
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The hypothesis that palatally-displaced canines are associated with smaller than average lateral incisors or with congenital absence of adjacent lateral incisors was tested on a West of Scotland population. A retrospective study of the records of orthodontic patients attending Glasgow Dental Hospital was carried out. One-hundred-and-eighty-two subjects with palatally displaced canines were identified. The tooth length of lateral and central incisors was measured on radiographs and the crown widths of lateral incisors were measured on study casts. One-hundred-and-six extracted maxillary lateral incisors were examined to allow more accurate measurement of crown width and root length than was possible from radiographs. An association was sought between the size of the lateral incisor or its absence, the position of the adjacent maxillary canine, and between crown size and root length of the lateral incisor. The conclusions supported the hypothesis that there is a weak association between palatally displaced maxillary canines and lateral incisors of smaller than average crown width. There was weak support for the association between palatal canines and absence of the adjacent lateral incisor. There was no correlation between lateral incisor crown width and root length.
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Kim, Minji, Jisoo Song, Teo Jeon Shin, Hong-Keun Hyun, Young-Jae Kim, Jung-Wook Kim, Sang-Hoon Lee, and Ki-Taeg Jang. "Association between Developmental Anomalies of Permanent Lateral Incisors and Tooth Eruption Disturbances." JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY 47, no. 2 (May 31, 2020): 128–39. http://dx.doi.org/10.5933/jkapd.2020.47.2.128.
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The purpose of this study was to examine the prevalence of developmental anomalies of permanent lateral incisor and eruption disturbances and analyze the association between two components. Panoramic radiographs of 3984 patients (aged 5 to 13 years) who visited the Department of Pediatric Dentistry of Seoul National University Dental Hospital between November 2016 and October 2017 were screened.<br/>The prevalence of developmental anomalies of permanent lateral incisors was 10.2%. The most common developmental anomalies were congenitally missing teeth(66.1%), followed by peg lateralis(33.5%). The prevalence of eruption disturbances was 16.5%. Among the patient with developmental anomalies of permanent lateral incisors, associated eruption disturbances were appeared on 31.1% of patients. Peg lateralis(<i>p</i> < 0.001), underdeveloped lateral incisors(<i>p</i> < 0.001) and dens invaginatus(<i>p</i> = 0.004) were associated significantly with eruption disturbance of permanent teeth. Eruption disturbance in patients with peg lateralis and dens invaginatus was most prevalent in maxillary canine. For patients with underdeveloped lateral incisor, eruption disturbance of maxillary central incisor was most frequent.<br/>It is important for patients with developmental anomalies of lateral incisors to detect associated eruption disturbance early through regular checkup. Diagnosis and treatment plan in view of such relationships is important in order to treat appropriately at the optimal time.
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Simic, Sanja, Jasna Pavlovic, Predrag Nikolic, Amila Vujacic, Vladanka Vukicevic, and Radovan Jovanovic. "The prevalence of peg-shaped and missing lateral incisors with maxillary impacted canines." Vojnosanitetski pregled 76, no. 1 (2019): 61–71. http://dx.doi.org/10.2298/vsp170225079s.
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Background/Aim. Many authors find that impacted maxillary canines is associated with missing and peg-shaped lateral incisor. The aim of this study was to examine the prevalence of peg-shaped and missing lateral incisor in subjects with impacted maxillary canines, and compare the size of maxillary lateral incisor on the side with palatally impacted canines and on the opposite side of the jaw where there is no impaction. Methods. The study included 64 patients with 80 impacted maxillary canines (23 males and 41 females, mean age 16.3). For each maxillary unerupted canine, precisely correct localization and classification into groups was done. We analyzed the morphology of the lateral incisor (normal, atypical) and frequency of missing of lateral maxillary incisors with canine impaction. Then, from the mentioned examinees sample with the maxillary canine teeth, a subgroup was formed. The criteria for selection were those with unilateral palatally impacted canines (33 subjects, 22 females and 11 males, mean age 17.8 years). The linear variables of the maxillary lateral incisor were measured by using digital measurements tools. The t-test was used to test the differences between the groups. Results. Normal morphology of the lateral incisors was found in 72% of the subjects with the impacted canines, 11.2% of the subjects had the peg-shaped lateral incisors, 6% had a bilateral and 4% had unilateral deficiency of lateral incisors. In the subgroup of the patients with unilateral palatal impaction, the middle value of the length of the lateral incisors was 1.9 mm shorter and the middle value of the width of the lateral incisors was smaller by 0.9 mm when comparing to the control group. Conclusion. The frequency of the deficiency of lateral incisors was statistically significantly higher in the group with palatal canine impaction. The maxillary lateral incisors on the side with palatally impacted canines were smaller than those on the side where there was no impaction.
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Jena, Ashok Kumar, and Ritu Duggal. "The Pattern of Maxillary Canine Impaction in Relation to Anomalous Lateral Incisors." Journal of Clinical Pediatric Dentistry 35, no. 1 (September 1, 2010): 37–40. http://dx.doi.org/10.17796/jcpd.35.1.uh4vm67264vv4762.
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Objective: To investigate the probability and pattern of maxillary canine impaction in relation to anomalous adjacent lateral incisors. Subjects and Method: A total 66 patients (M=24, F=42) in the age range of 12 to 18 years who had at least one impacted maxillary canine were included for the study. The maxillary lateral incisor anomalies and nature of canine impactions were diagnosed from the radiographs and study models. Maxillary lateral incisors were classified as normal, peg shaped, impacted and congenitally missing. The maxillary canine impactions were classified as buccal and palatal impaction. Each affected maxillary side was considered separately. This resulted total 88 cases for which the probabilities of different canine positions adjacent to the different categories of lateral incisor anomalies were evaluated statistically. Results:The occurrence of palatal canine impaction was almost1.6 times more than the buccal canine impaction. Total 11.76% of the bucally impacted canines and 38.89% of the palatally impacted canines were associated with anomalous lateral incisors. There was no positive association between anomalous lateral incisors and maxillary canines. In relation to anomalous lateral incisor, the probability of palatal canine impaction was more than the buccal canine impaction. Conclusions: There was no positive association between lateral incisor anomalies and maxillary canine impaction. However, there was a high probability of palatal canine impaction when adjacent lateral incisors were anomalous.
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Menezes, Erica Bretas Cabral, Marcos Alan Vieira Bittencourt, and Andre Wilson Machado. "Do different vertical positions of maxillary central incisors influence smile esthetics perception?" Dental Press Journal of Orthodontics 22, no. 2 (April 2017): 95–105. http://dx.doi.org/10.1590/2177-6709.22.2.095-105.oar.
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ABSTRACT INTRODUCTION: The purpose of this study was to determine the perception of smile esthetics among orthodontists and layperson, with respect to different maxillary central incisors vertical positions in full-face and close-up smile analyses. METHODS: Frontal photographs of the smiles of two adult women were used. Images were altered to create a symmetrical image with the gingival margin levels of the maxillary canines matching the central incisors and a 1.0-mm central-to-lateral incisal step. Later, the images were altered in order to create six different central incisor vertical positions in 0.5-mm increments. The images were randomly assembled in an album, which was given to 114 judges, 57 orthodontists and 57 laypersons, who were asked to evaluate the attractiveness of the images using the visual analog scale. The data collected were statistically analyzed by means of 1-way analysis of variance with the Tukey post-hoc test and the Student t test. RESULTS: The highest rated smiles showed two notable characteristics: a) the central incisor gingival margins matched or were 0.5 mm below the line of the canine gingival margins and; b) the central-to-lateral incisal step was 1.0 to 1.5 mm. The worst smiles showed two notable characteristics: a) the central incisor gingival margins were 1.0 mm above or 1.5 mm below the canine gingival margins and; b) no step between the centrals and laterals or a 2.5-mm step. CONCLUSION: The vertical position of the maxillary central incisors significantly affected the perception of the smile esthetics, whereas slightly extruded central incisors were more esthetically preferred than intruded.
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Garib, Daniela Gamba, Julia Petruccelli Rosar, Renata Sathler, and Terumi Okada Ozawa. "Dual embryonic origin of maxillary lateral incisors: clinical implications in patients with cleft lip and palate." Dental Press Journal of Orthodontics 20, no. 5 (October 2015): 118–25. http://dx.doi.org/10.1590/2177-6709.20.5.118-125.sar.
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Introduction:Cleft lip and palate are craniofacial anomalies highly prevalent in the overall population. In oral clefts involving the alveolar ridge, variations of number, shape, size and position are observed in maxillary lateral incisors. The objective of this manuscript is to elucidate the embryonic origin of maxillary lateral incisors in order to understand the etiology of these variations.Contextualization: The hypothesis that orofacial clefts would split maxillary lateral incisor buds has been previously reported. However, recent studies showed that maxillary lateral incisors have dual embryonic origin, being partially formed by both the medial nasal process and the maxillary process. In other words, the mesial half of the lateral incisor seems to come from the medial nasal process while the distal half of the lateral incisor originates from the maxillary process. In cleft patients, these processes do not fuse, which results in different numerical and positional patterns for lateral incisors relating to the alveolar cleft. In addition to these considerations, this study proposes a nomenclature for maxillary lateral incisors in patients with cleft lip and palate, based on embryology and lateral incisors position in relation to the alveolar cleft.Conclusion:Embryological knowledge on the dual origin of maxillary lateral incisors and the use of a proper nomenclature for their numerical and positional variations renders appropriate communication among professionals and treatment planning easier, in addition to standardizing research analysis.
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Jayashankar, DN, M. Manjunatha, N. Shubhashini, Shija LNU, and VC Sunil Kumar. "Supernumerary Lateral Incisor." Journal of Contemporary Dental Practice 14, no. 1 (2013): 129–32. http://dx.doi.org/10.5005/jp-journals-10024-1285.
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ABSTRACT Supernumerary teeth are common in general population and occur frequently in patients with familial trait. However, it is rare to find supernumeraries in individuals with no associated disease or syndrome. Supernumerary teeth are found in any region of maxilla and mandible, with a predisposition for anterior maxilla. A case of endodontically involved supernumerary lateral incisor is described. How to cite this article Kini A, Manjunatha M, Shubhashini N, Shija, Kumar VCS, Jayashankar DN. Supernumerary Lateral Incisor. J Contemp Dent Pract 2013;14(1):129-132.
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Seehra, Jadbinder, Padhraig S. Fleming, and Andrew T. DiBiase. "Dilacerated lateral incisor." Orthodontic Update 2, no. 3 (July 2, 2009): 84–86. http://dx.doi.org/10.12968/ortu.2009.2.3.84.
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Tai, Kiyoshi, Jae Hyun Park, and Aiko Takayama. "Congenitally Missing Maxillary Lateral Incisor Treated with Atypical Extraction Pattern." Journal of Clinical Pediatric Dentistry 36, no. 1 (September 1, 2011): 11–18. http://dx.doi.org/10.17796/jcpd.36.1.424567j7539313h2.
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The congenital absence of one or more maxillary lateral incisors poses a challenge to effective treatment planning for general dentists and dental specialists. An evaluation of anterior smile esthetics must include both static and dynamic evaluations of frontal and profile views to optimize both dental and facial appearance. This article presents a case with canine substitution treatment to replace a missing maxillary lateral incisor combined with the extraction of two mandibular lateral incisors and a small maxillary lateral incisor. Both the patient's occlusion and facial appearance were significantly improved after orthodontic treatment.
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Elbay, Ü. Şermet, A. Baysal, M. Elbay, and S. Sarıdağ. "Multidisciplinary Approach to Delayed Treatment of Traumatic Teeth Injuries Involving Extrusive Luxation, Avulsion and Crown Fracture." Operative Dentistry 39, no. 6 (November 1, 2014): 566–71. http://dx.doi.org/10.2341/13-116-s.
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SUMMARY A 12-year-old boy with extrusion of the maxillary right central incisor, uncomplicated fracture of the left central incisor, avulsion of the mandibular right and left central incisors, and crown fracture of the mandibular right lateral incisor presented to the Kocaeli University Department of Pediatric Dentistry 20 days after sustaining the traumatic injuries. Orthodontic repositioning of the extrusive maxillary right central incisor was planned. Additionally, this tooth was necrotic and needed root canal treatment. The maxillary left central incisor and right mandibular lateral incisor were necrotic and needed root canal treatment. The orthodontic and endodontic treatments were successfully performed simultaneously. Restoration of the fractured mandibular right lateral incisor and maxillary left central incisor was completed with resin composite. Subsequent to orthodontic and endodontic treatment, prosthodontic rehabilitation was performed. At the two-year followup, the teeth appeared normal and the patient had no complaints.
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Bicakci, Ali Altug, Ozkan Semih Cankaya, Serhat Mertoglu, Nurbengu Yilmaz, and Burcu Kocoglu Altan. "Does proclination of maxillary incisors really affect the sagittal position of point A?" Angle Orthodontist 83, no. 6 (May 16, 2013): 943–47. http://dx.doi.org/10.2319/021413-133.1.
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ABSTRACT Objective: To examine the effect of maxillary incisor proclination due to orthodontic treatment upon the sagittal position of point A and evaluate the effect of this possible movement of point A on sella-nasion-point A (SNA) angle. Materials and Methods: A study group was formed from 25 subjects (12 male and 13 female) who had Class II division 2 malocclusion with retroclined upper incisors, and a control group was formed from 25 subjects (12 male and 13 female) who had minor crowding in the beginning of the treatment and required no or minimal maxillary anterior tooth movement. Treatment changes in maxillary incisor inclination, sagittal position of point A, SNA angle, and movement of incisor root apex and incisal edge were calculated on pretreatment and posttreatment lateral cephalographs. Results: Maxillary incisors were significantly proclined (17.33°) in the study group and not significantly proclined (1.81°) in the control group. This proclination resulted in 2.12-mm backward movement of the root apex and 5.76-mm forward movement of the incisal edge of maxillary incisors. Point A moved 1.04 mm backward (P = .582) and 0.48 mm (P = .811) forward in the study and control groups, respectively. Incisor root apex and incisal edge almost remained stable in the control group. No significant change was observed in the value of the SNA angle in both the study and control groups. Conclusions: Proclination of maxillary incisors accompanied by backward movement of incisor root apex caused posterior movement of point A. However, this posterior movement does not significantly affect the SNA angle.
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Cassolato, Sandra F., Bruce Ross, John Daskalogiannakis, James Noble, and Bryan Tompson. "Treatment of Dental Anomalies in Children with Complete Unilateral Cleft Lip and Palate at Sickkids Hospital, Toronto." Cleft Palate-Craniofacial Journal 46, no. 2 (March 2009): 166–72. http://dx.doi.org/10.1597/07-239.1.
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Objective: To quantify dental anomalies in permanent dentition associated with complete unilateral cleft lip and palate and to survey treatment modalities used to address these problems. Method: Retrospective study of 116 children with complete unilateral cleft lip and palate treated at SickKids since birth. Presence and morphology of lateral incisors and second premolars were determined. Orthodontic, surgical, and/or prosthetic procedures were analyzed. Results: The cleft-side lateral incisor was absent in 93.1% of finished cases. The lateral incisor mesial to the cleft was present in 4.3%, absent due to agenesis in 75.9%, and extracted in 19.8% of cases. The lateral distal to the cleft was present in 2.6%, absent due to agenesis in 33.6%, and extracted in 63.8% of cases. Of 105 lateral incisors, only one had normal morphology. Noncleft-side lateral incisors were absent in 16% of finished cases. Absence was due to agenesis in 12.1% of cases and extraction in 4.3%. When the lateral incisor was missing, closure of the dental space occurred by orthodontic tooth movement after alveolar bone grafting (45%); surgical closure with simultaneous alveolar bone grafting (35%); prosthetic closure (17%); and 3% were failures. Agenesis of premolars occurred in 12.1% of cleft-side and 10.3% of noncleft-side maxillary second premolars. Conclusions: The cleft-side lateral incisor is rarely present at the conclusion of orthodontic and surgical treatment of complete unilateral cleft lip and palate. Often absent due to agenesis, when present it is typically abnormal in size and bone support and is commonly extracted in favor of canine substitution.
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Hossain, MZ, S. Haque, and MSA Mamun. "Management of congenital missing maxillary incisors by orthodontic treatment followed by fixed prosthesis." Bangladesh Journal of Orthodontics and Dentofacial Orthopedics 2, no. 1 (July 31, 2013): 16–19. http://dx.doi.org/10.3329/bjodfo.v2i1.15998.
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Fixed prosthetic restoration has become a primary treatment option for the replacement of congenitally missing lateral incisors where adequate Implant restorations have limited use due to many factors. The central incisor and canine often erupt less than optimal positions adjacent to the edentulous lateral incisor space, and therefore preprosthetic orthodontic treatment is frequently required. Derotation of the central incisor and canine, space opening and correction of root proximities may be required to create appropriate space, in which fixed prosthesis may achieve an esthetic restoration. This paper presents two case reports with congenital missing lateral incisors and one case report with missing central incisors due to trauma. The paper also discusses the aspects of preprosthetic orthodontic diagnosis and the treatment that needs to be considered with conservative and fixed prosthetic replacement . DOI: http://dx.doi.org/10.3329/bjodfo.v2i1.15998 Ban J Orthod & Dentofac Orthop, October 2011; Vol-2, No.1, 16-19
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Naorungroj, Supawadee. "Esthetic Reconstruction of Diastema with Adhesive Tooth-Colored Restorations and Hyaluronic Acid Fillers." Case Reports in Dentistry 2017 (2017): 1–6. http://dx.doi.org/10.1155/2017/5670582.
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Objective. This report presents a comprehensive esthetic treatment with adhesive tooth-colored restorations in a combination with hyaluronic acid (HA) fillers of diastema in an orthodontic patient with relapse.Case Report. A 36-year-old female patient consulted about 1.5–2 mm midline diastema after an orthodontic relapse of replacing missing central incisors with lateral incisors and dark-colored gingival tissue as a result of a metal post and core with porcelain fused to a metal (PFM) crown at the left lateral incisor. Restorative treatments included replacing the PFM with all-ceramic material and placing a ceramic veneer on the right lateral incisor. To close the space, crown forms of both lateral incisors were altered. A direct resin composite was then used to reform right and left canines to a more ideal lateral incisor shape. An HA fillers injection was used to fill the remaining open gingival embrasure. Eighteen months after treatment, the interdental papilla remained stable and the patient was satisfied with the result.Conclusion. Esthetic reconstruction of diastema and open gingival embrasure in this case can be accomplished without orthodontic retreatment. Tooth-colored restorations and HA filler injection appear as a promising modality to address this patient’s esthetic concern.
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Correa, Maria Salete Nahas Pires, Luciana Faria Sanglard Peixoto, Cristina Giovanetti Del Conde Zardetto, Fernanda Nahas Pires Correa, and Celia Regina Martins Delgado Rodrigues. "Tooth loss and subluxation in the primary dentition." Journal of Clinical Pediatric Dentistry 29, no. 2 (January 1, 2005): 127–32. http://dx.doi.org/10.17796/jcpd.29.2.u1651574w23751w1.
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The case of a five-year-old child is reported, who suffered dentoalveolar injury including subluxation of the right upper lateral incisor and avulsion of the upper central incisors and left upper lateral incisor and laceration in the mucosa. The case was followed for 12 years until complete root formation and alignment of the anterior permanent teeth. J Clin Pediatr Dent 29(2): 127-132, 2005
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Falahat, Babak, Sune Ericson, Rozmary Mak D'Amico, and Krister Bjerklin. "Incisor Root Resorption Due to Ectopic Maxillary Canines." Angle Orthodontist 78, no. 5 (September 1, 2008): 778–85. http://dx.doi.org/10.2319/071007-320.1.
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Abstract Objective: To document the long-term fate of maxillary incisors with resorbed roots after correction of the associated ectopic canines. Materials and Methods: The subjects were recruited from 107 children and adolescents age 9–15 years (mean 12.5 years) at initial registration, with 156 ectopically positioned maxillary canines. The children were referred to the specialist orthodontic clinic for consultation because of the risk of incisor root resorption. Of 51 patients contacted, 16 failed to attend. Eight of the remaining 35 were excluded because their lateral incisors had been extracted, leaving 27 subjects for follow-up registration. At initial consultation, all subjects had undergone radiographic examination, including computed tomography (CT) scans. At the follow-up consultation, the radiographic examination was limited to intraoral films. Results: No resorbed incisor was lost during the 2- to 10-year follow-up period. The resorptive lesions had undergone repair in 13 teeth, remained unchanged in 12 teeth and progressed in 7 teeth. In the 13 teeth exhibiting signs of repair, no resorption was detectable in 11 teeth and minor resorption was detected in 2 lateral incisors. At the initial registration, severe or moderate resorption had been diagnosed in 12 lateral and 5 central incisors, compared with 11 lateral and 6 central incisors at follow-up. In 10 subjects initially diagnosed with resorption of 13 incisors, the lesions were no longer discernible on intraoral radiographs at follow-up. Conclusions: Even in cases of severe resorption, the incisor roots show good long-term healing. Incisors with root resorption can be used in an orthodontic appliance system.
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Cho, Shiu-yin. "Primary Double Tooth: Report of a Rare Correlation with the Permanent Dentition." Primary Dental Care os14, no. 2 (April 2007): 48–50. http://dx.doi.org/10.1308/135576107780556734.
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Double tooth is a developmental anomaly that is seen more frequently in the primary than the permanent dentition. Double tooth involving primary canines and lateral incisors is found only in the mandible. The succeeding permanent lateral incisor is often found missing congenitally in the same region. This article reports a rare case of a double tooth involving a mandibular primary canine and lateral incisor. Instead of agenesis, the double tooth has been succeeded by a permanent supernumerary tooth in the same region.
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Canger, Emin Murat, Peruze Çelenk, and Ömer Said Sezgin. "Dens Invaginatus on a Geminated Tooth: A Case Report." Journal of Contemporary Dental Practice 8, no. 5 (2007): 99–105. http://dx.doi.org/10.5005/jcdp-8-5-99.
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Abstract Aim To present a case of a concomitant occurrence of dens invaginatus (DI) and gemination in a mandibular left lateral incisor. Background DI is a developmental anomaly resulting from the invagination of a portion of a crown in the enamel organ stage of odontogenesis. It is commonly found in the maxillary lateral incisors but also occurs in the central incisors, premolars, canines, and molars in descending order of frequency. The occurrence of DI in the mandible is extremely rare. Gemination results from one tooth bud attempting to split into two. Geminated teeth present with a single root structure and rarely occur in mandibular teeth. Report A 13-year-old girl presented with a chief complaint of spontaneous nocturnal pain in the mandibular left lateral incisor tooth. Intraoral examination revealed the tooth was enlarged with a notch on the incisal edge extending to the coronal 1/3 of the crown. The radiological examination revealed a Type 2 DI in a Type I geminated mandibular left lateral incisor. Summary DI is clinically significant due to the possibility of the pulpal involvement; pulpitis, necrotic pulps, and chronic periapical lesions are often associated with this anomaly without clinical symptoms. Clinicians should be mindful of the possibility of DI when a tooth presents pulpitis without history of trauma or caries and examine the suspicious tooth and the periodontium radiographically. Citation Canger EM, Çelenk P, Sezgin ÖS. Dens Invaginatus on a Geminated Tooth: A Case Report. J Contemp Dent Pract 2007 July;(8)5:099-105.
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Yañez-Vico, Rosa-María, Maria Cadenas de Llano-Perula, and Enrique Solano-Reina. "Unusual Case of Extraction of Maxillary Lateral Incisors and Mandibular Central Incisors." Case Reports in Dentistry 2017 (2017): 1–8. http://dx.doi.org/10.1155/2017/2486274.
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Introduction. This article’s purpose is to report a case where maxillary lateral incisors and mandibular central incisors are extracted and a canine substitution was performed as the best therapeutic option in order to obtain symmetry in a malocclusion with an upper lateral incisor with poor prognostic, solve moderate crowding, get enough space for the permanent dentition, and provide stability to the results. Case Report. An 11-year-old boy with straight profile with acute-to-normal nasolabial angle and protruded lips, mixed dentition, lower and upper severe crowding, and a bilateral molar angle Class I. The left maxillary lateral incisor failed endodontic treatment secondary to an intrusive traumatic lesion in the primary and permanent dentition. The treatment of choice was the extraction of both upper lateral incisors and both central lower incisors. The patient finished with molar and canine angle Class I and coincident midlines and was functionally stable; both lateral and protrusive jaw movements were effectively made by the first premolars and central incisors and canines without improper contacts of the rest of the teeth. Overbite of one-third and correct overjet were also achieved, and the esthetic outcome was satisfactory due to the composed material restorations of both the central and lateral incisors, as well as recontouring of the first maxillary premolars.
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Lira dos Santos, Elis Janaina, Alana Moura Xavier Dantas, Raíssa Marçal Vilela, Karina Jerônimo Rodrigues Santiago de Lima, and Rejane Targino Soares Beltrão. "The influence of varying maxillary central incisor vertical dimension on perceived smile aesthetics." Journal of Orthodontics 46, no. 2 (March 28, 2019): 137–42. http://dx.doi.org/10.1177/1465312519839713.
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Objective: To evaluate patient perception of the smile focused on analysis of the upper incisors. Design: Cross-sectional study. Setting: Department of Clinical and Social Dentistry at Federal University of Paraíba, João Pessoa, Brazil. Participants: The sample consisted of 135 individuals (73 women and 62 men). Methods: Images with different characteristics associated with the incisal edges were shown at random and analysed using a Likert scale. Data were analysed using the Chi-square test or Fisher’s exact test with a statistically significant difference ( P < 0.05). Results: Smile I (difference of 1.5 mm in relation to the central incisor and lateral) was considered the most aesthetic, while Smile III (no difference in height between the central and lateral incisors) was the least aesthetic. A significant difference was found between perception of smile II (difference of 1 mm in relation to the central incisor and lateral) and age groups ( P < 0.005), with 31% (n = 13) of individuals aged 45–64 years considering smile II as not pleasant, 4.4% (n = 2) aged 15–24 years and 8.3% (n=4) aged 25–44 years and 4.4% (n = 2) aged 15–24 years considering the same. A significant difference was also found in relation to educational background of the assessor and smile perception, with smile III ( P = 0.0441) and smile IV ( P = 0.0053) considered the most aesthetic ( P = 0.0116). Conclusion: The smile considered most attractive among the sample was that with 1.5 mm steepness between the central and lateral incisors, while a flat smile arc was considered least attractive.
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Lapatki, Bernd G., Dirk Baustert, Jürgen Schulte-Mönting, Sibylle Frucht, and Irmtrud E. Jonas. "Lip-to-incisor Relationship and Postorthodontic Long-term Stability of Cover-bite Treatment." Angle Orthodontist 76, no. 6 (November 1, 2006): 942–49. http://dx.doi.org/10.2319/090205-309.
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Abstract Objective: To investigate the impact of a persisting high lip line and other potential relapse-inducing factors on long-term stability of orthodontic correction of retroinclined maxillary central incisors. Materials and Methods: Thirty-one cover-bite (“Deckbiss”) patients with retroinclined maxillary central incisors and a deep frontal overbite were evaluated. The maxillary central incisor inclination was determined odontometrically with study models made pretreatment, posttreatment, and at a follow-up examination (mean posttherapeutic interval: 9.0 years). The lip-to-incisor relationship, the interincisal angle, and the anteroposterior maxillary central incisor position were measured on lateral cephalograms taken after active treatment. Results: The relapse tendency of the orthodontic correction of the retroinclined maxillary central incisors displayed great interindividual variability with a range of posttherapeutic inclination change of −6.75° to +8.00°. Multiple regression analysis revealed an increased tendency for relapse in patients with (1) a high posttherapeutic (dorsal) lip line level combined with the maxillary central incisor and lower lip contact only in the incisal crown area (P < .01) and (2) a marked therapeutically induced inclination change of the maxillary central incisors (P < .05). Interrelations between the relapse of the corrected maxillary central incisors and other evaluated parameters were not statistically significant. Conclusions: For maximum treatment stability, the elimination of an excessive overlap of the upper incisors by the lower lip should be regarded as one of the most important therapeutic objectives when treating this malocclusion.
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Arriola-Guillén, Luis Ernesto, Ivy Samantha Valera-Montoya, Yalil Augusto Rodríguez-Cárdenas, Gustavo Armando Ruíz-Mora, Aron Aliaga-Del Castillo, and Guillerme Janson. "Incisor root length in individuals with and without anterior open bite: a comparative CBCT study." Dental Press Journal of Orthodontics 25, no. 4 (August 2020): 23e1–23e7. http://dx.doi.org/10.1590/2177-6709.25.4.23.e1-7.onl.
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ABSTRACT Objective: This study aimed to compare the root length of maxillary and mandibular incisors between individuals with open bite versus matched individuals with adequate overbite. Methods: This comparative, matched and retrospective study included 48 cone beam computed tomographies (CBCTs) obtained at a university radiological center. Scans belonged to 24 individuals with open bite (overbite ≤ 0 mm) and 24 individuals with adequate overbite (controls). Both groups were matched by age, sex, malocclusion classification and skeletal characteristics (ANB and FMA angles). Root length of each maxillary and mandibular incisor was measured in millimeters (mm) in a sagittal section from a perpendicular line to the enamel cement junction until the root apex (384 length measurements were made). The means of root length in both groups were compared using t-tests. In addition, correlations between variables were evaluated with the Pearson correlation coefficient (α = 0.05). Results: In both groups, the root length of the upper central incisors was approximately 12 mm and the root length of the maxillary lateral incisors was approximately 13 mm (p˃ 0.05). Likewise, the root length of lower central incisors in both groups measured approximately 12 mm (p˃ 0.05). However, the mandibular lateral incisor roots of open bite patients were significantly longer than in the normal overbite patients (approximately 1 mm, p= 0.012 right side, p= 0.001 left side). Conclusions: Root length of maxillary incisors and central mandibular incisor is similar in individuals with or without open bite, but the mandibular lateral incisor roots in open bite patients were significantly longer than in the normal overbite patients.
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Shapira, Yehoshua, Tamar Finkelstein, Rana Kadry, Shirley Schonberger, and Nir Shpack. "Mandibular Symmetrical Bilateral Canine-Lateral Incisors Transposition: Its Early Diagnosis and Treatment Considerations." Case Reports in Dentistry 2016 (2016): 1–6. http://dx.doi.org/10.1155/2016/5043801.
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Bilateral mandibular tooth transposition is a relatively rare dental anomaly caused by distal migration of the mandibular lateral incisors and can be detected in the early mixed dentition by radiographic examination. Early diagnosis and interceptive intervention may reduce the risk of possible transposition between the mandibular canine and lateral incisor. This report illustrates the orthodontic management of bilateral mandibular canine-lateral incisor transposition. Correct positioning of the affected teeth was achieved on the left side while teeth on the right side were aligned in their transposed position. It demonstrates the outcome of good alignment of the teeth in the dental arch.
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Wade, Nicola, Andrew Shelton, and Matthew Gahan. "Missing lateral incisors: implant-related dilemmas." Orthodontic Update 14, no. 3 (July 2, 2021): 139–45. http://dx.doi.org/10.12968/ortu.2021.14.3.139.
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This article provides an overview of the management of developmentally missing lateral incisors. When prosthodontic replacement of the missing lateral is required, wherever possible, implant-supported prostheses are considered the preferred definitive replacement option. The developmentally missing lateral incisor presents a unique aesthetic challenge. Developments in dental implant systems have implications in the management of this particular clinical situation. CPD/Clinical Relevance: To highlight the importance of interdisciplinary dental care, including the orthodontist and restorative dentist, in treatment of patients with missing lateral incisors.
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Agrawal, Gauri, and Suchita Daokar. "A Clinical Evaluation of Effect of Positional Change of Mini Implant on Intrusion of Maxillary Incisors - A Randomized Clinical Trial." Orthodontic Journal of Nepal 8, no. 2 (December 31, 2018): 6–11. http://dx.doi.org/10.3126/ojn.v8i2.23063.
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Introduction: A true maxillary intrusion is always a challenge for orthodontists. There are number of methods of incisor intrusion. Mini Implant assisted incisor intrusion is gaining popularity in recent years. We conducted this research to evaluate and compare the effect of different implant positioning on amount and rate of intrusion, axial and labiolingual inclination of incisors, amount of external apical root resorption of incisors.
Materials & Method: A prospective, double-blind, randomized clinical study was designed consisting of 30 adult or-thodontic patients, aged 25 and above. The subjects were divided into two groups (Group A-15 patients where mini-implant was placed between two maxillary central incisors below ANS, Group B -15 patients where mini- implant was placed distal to maxillary lateral incisor). Amount of intrusion and change in axial inclination was measured on OPG, labiolingual inclination was measured on Lateral cephalogram, IOPA was taken to observe EARR. The intragroup comparison of pre treatment and post treatment changes were done using Wil-coxon signed rank test, where as the intergroup comparison between Group A and Group B were compared using Mann Whitney U test.
Result: Statistically significant 3D changes of both central and lateral incisors were seen when continuous intrusion forces were applied from implant placed distal to lateral incisors. Whereas true intrusion with minimal (non significant) axial and labiolingual inclination changes were seen with forces applied through implant placed in the midline. 80 grams of light continuous forces brought about rapid tooth movement with no side effects such as tissue irritation and EARR.
Conclusion: Mini implant placed below ANS leads to true en-mass intrusion of four maxillary incisors while intrusion carried out with implant placed distal to lateral incisors bilaterally have 3D changes on all four maxillary incisors.
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Saigal, Sonal. "Data on morphometric analysis of anterior teeth from Hazaribag College of Dental Sciences and Hospital, Jharkhand." Bioinformation 17, no. 1 (January 31, 2021): 60–66. http://dx.doi.org/10.6026/97320630017060.
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It is of interest to document data on morphometric (measurement of external form) analysis of maxillary and mandibular anterior teeth collected from a dental set up using mesio-distal (MD) dimension. The mesiodistal dimensions of all permanent anterior teeth (central incisor, lateral incisor and canine) of 25 males and 25 females patients were recorded using digital vernier calipers. Data were charted and statistical analysis was done using Mann Whitney U test. Data shows sexual dimorphism for every tooth between males and females. However, dimorphism was exhibited only in maxillary and mandibular canine, mandibular central incisors, and lateral incisor. Hence, odontometric parameters offer simple, reliable and cost-effective in forensic investigation for recording gender discrimination.
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Delli, Konstantina, Christos Livas, and Michael M. Bornstein. "Lateral incisor agenesis, canine impaction and characteristics of supernumerary teeth in a South European male population." European Journal of Dentistry 07, no. 03 (July 2013): 278–83. http://dx.doi.org/10.4103/1305-7456.115410.
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ABSTRACT Objective: To assess the prevalence of lateral incisor agenesis impacted canines and supernumerary teeth in a young adult male population. Materials and Methods: The panoramic radiographs of 1745 military students (mean age: 18.6 ± 0.52 years) who attended the Center of Aviation Medicine of the Armed Forces of Greece during the period 1997-2011 were initially analyzed for lateral incisor agenesis by two observers. After exclusion of the known orthodontic cases, a subgroup of 1636 examinees (mean age: 18.6 ± 0.44 years) was evaluated for canine impaction and supernumerary teeth. Results: Twenty-eight missing lateral incisors were observed in 22 military students, indicating an incidence of 1.3% in the investigated population. No lateral incisor agenesis was detected in the mandibular arch. A prevalence rate of 0.8% was determined for canine impaction in the sample of young adults. The majority of impacted teeth (86.7%) were diagnosed in the maxillary arch. Thirty-five supernumerary teeth were observed in 24 examinees (prevalence rate: 1.5%). The ratio of supernumerary teeth located in the maxilla versus the mandible was 2.2:1. The most common type of supernumerary tooth was the upper distomolar. Conclusion: The prevalence of lateral incisor agenesis, canine impaction, and supernumerary teeth ranged from 0.8 to 1.5% in the sample of male Greek military students.
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Chaudhary, Ranjeet Kumar, and Prince Kumar. "Anterior fracture tooth management using richmond crown-A case report." IP Annals of Prosthodontics and Restorative Dentistry 7, no. 3 (September 15, 2021): 177–80. http://dx.doi.org/10.18231/j.aprd.2021.036.
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Maxillary central incisor is the most commonly affected tooth during trauma followed by maxillary lateral incisor and mandibular incisors. Trauma to the anterior tooth requires urgent care because of the essentiality of preserving the natural tooth. When a complicated crown a fracture takes place, it necessitates endodontic treatment and restoration of a fractured crown segment with post in the canal. This case report describes a patient with a broken central incisor and treated with a Richmond crown.
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Keith, Olga, and Marshall Midda. "An Inverted Upper Lateral Incisor." British Journal of Orthodontics 16, no. 3 (August 1989): 219–20. http://dx.doi.org/10.1179/bjo.16.3.219.
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Vire, Donald E. "Two-rooted maxillary lateral incisor." Oral Surgery, Oral Medicine, Oral Pathology 59, no. 3 (March 1985): 321. http://dx.doi.org/10.1016/0030-4220(85)90176-8.
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Hashim, Hayder Abdallah. "Orthodontic Treatment of Fused and Geminated Central Incisors: A Case Report." Journal of Contemporary Dental Practice 5, no. 1 (2004): 136–44. http://dx.doi.org/10.5005/jcdp-5-1-136.
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Abstract A 10-year old Egyptian male presented with a geminated upper right central incisor along with a fused and rotated upper left central incisor in cross bite. He also had severe crowding in the maxillary arch and a congenitally missing lower right first permanent premolar. Orthodontic treatment was carried out to align upper right and left central incisors, lateral incisors, and canines. Treatment options were discussed. Citation Hashim HA. Orthodontic Treatment of Fused and Geminated Central Incisors: A Case Report. J Contemp Dent Pract 2004 February;(5)1:136-144.
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Inayati, Fidiyah, and I. Gusti Aju Wahju Ardani. "Management Of Mandibular Lateral Incisor Agenesis With Skeletal Class III Malocclusion by Space Closing Technique." Indonesian Journal of Dental Medicine 1, no. 2 (June 30, 2018): 93. http://dx.doi.org/10.20473/ijdm.v1i2.2018.93-97.
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Background: Patients with congenital absence of a mandibular lateral incisor are often found having difficulty in achieving adequate functional occlusion. It may affect esthetics, mastication, speech, and occlusal balance. Purpose: This paper reported an agenesis treatment of one mandibular lateral incisor case using a space closure method. Case: A twenty-three years old female patient with agenesis of tooth 42, mandibular anterior crowding, multiple diastema on mandibular anterior teeth, and skeletal class III malocclusion. Case Management: Space closure method was chosen to correct the agenesis by considering the class III skeletal malocclusion and multiple diastema condition. Conclusion: Space closure method treatment improved the patient’s facial and dental esthetics, and it provided a good functional occlusion, despite the absence of a mandibular lateral incisor, which generally impairs the adequate incisal guidance.
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R, Sudha, Gayathri N, Narasimhan B, and Sukumaran VG. "Endodontic Management of a Fused Maxillary Permanent Lateral Incisor with a Supplemental Lateral Incisor." Journal of Scientific Dentistry 1, no. 2 (2011): 35–37. http://dx.doi.org/10.5005/jsd-1-2-35.
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Ogodescu, Alexandru, Ramona Ştefănescu, Emilia Ogodescu, Andreea Igna, Magda Luca, and Sorin Bolintineanu. "Crown-Root Angulation of Central Incisors in Cases With Maxillary Lateral Incisors Agenesis." European Scientific Journal, ESJ 13, no. 15 (May 31, 2017): 330. http://dx.doi.org/10.19044/esj.2017.v13n15p330.
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Dental agenesis of the maxillary lateral incisor is a frequently seen anomaly in children and teenagers nowadays. It can alter the esthetics as well as the functions in the frontal area of the maxilla and therefore, early detection and therapy would be beneficial. The treatment often implies an interdisciplinary approach between orthodontics and implantology. One of the particularities of this kind of treatment is given by the distal angulation of central incisor’s root, which invades the space required by the dental implant. Any treatment plan should begin with a thorough radiographical analysis of the space and morphological particularities of the central incisors.
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Kojima, Rie, Yo Taguchi, Hiroaki Kobayashi, and Tadashi Noda. "External root resorption of the maxillary permanent incisors caused by ectopically erupting canines." Journal of Clinical Pediatric Dentistry 26, no. 2 (January 1, 2003): 193–97. http://dx.doi.org/10.17796/jcpd.26.2.45258u427um975n0.
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In this study, we analyzed the root resorption of 10 maxillary permanent incisors (two central and eight lateral incisors) in seven cases associated with ectopic eruption of adjacent canines.Two incisors were extracted because of marked root resorption. Two erupted after traction, whereas, five erupted after surgical exposure or without any treatment, although one lateral incisor submerged due to ankylosis. This suggests that self-correction of the ectopic canine occurs in some cases.
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Katz, Steven, Melissa Drum, Al Reader, John Nusstein, and Mike Beck. "A Prospective, Randomized, Double-Blind Comparison of 2% Lidocaine With 1 : 100,000 Epinephrine, 4% Prilocaine With 1 : 200,000 Epinephrine, and 4% Prilocaine for Maxillary Infiltrations." Anesthesia Progress 57, no. 2 (June 1, 2010): 45–51. http://dx.doi.org/10.2344/0003-3006-57.2.45.
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Abstract The purpose of this prospective, randomized, double-blind crossover study was to evaluate the anesthetic efficacy of 2% lidocaine with 1 : 100,000 epinephrine, 4% prilocaine with 1 : 200,000 epinephrine, and 4% prilocaine in maxillary lateral incisors and first molars. Sixty subjects randomly received, in a double-blind manner, maxillary lateral incisor and first molar infiltrations of 1.8 mL of 2% lidocaine with 1 : 100,000 epinephrine, 1.8 mL of 4% prilocaine with 1 : 200,000 epinephrine, and 1.8 mL of 4% prilocaine, at 3 separate appointments spaced at least 1 week apart. The teeth were pulp-tested in 3-minute cycles for a total of 60 minutes. Anesthetic success (ie, obtaining 2 consecutive 80 readings with the electric pulp tester) and onset of pulpal anesthesia were not significantly different between 2% lidocaine with 1 : 100,000 epinephrine, 4% prilocaine with 1 : 200,000 epinephrine, and 4% prilocaine for the lateral incisor and first molar. For both lateral incisor and first molar, 4% prilocaine with 1 : 200,000 epinephrine and 2% lidocaine with 1 : 100,000 epinephrine were equivalent for incidence of pulpal anesthesia. However, neither anesthetic agent provided an hour of pulpal anesthesia. For both lateral incisor and first molar, 4% prilocaine provided a significantly shorter duration of pulpal anesthesia compared with 2% lidocaine with 1 : 100,000 epinephrine and 4% prilocaine with 1 : 200,000 epinephrine.
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An, Jung-Sub, Wonchae Jeong, Liselotte Sonnesen, Seung-Hak Baek, and Sug-Joon Ahn. "Effects of Presurgical Mandibular Incisor Decompensation on Long-Term Outcomes of Class III Surgical Orthodontic Treatment." Journal of Clinical Medicine 10, no. 13 (June 28, 2021): 2870. http://dx.doi.org/10.3390/jcm10132870.
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This research aimed to evaluate the effects of presurgical mandibular incisor decompensation on long-term outcomes of Class III surgical orthodontic treatment. Thirty-five patients with skeletal Class III malocclusion who received conventional surgical orthodontic treatment were included. Mandibular incisor brackets with −6° of inclination were placed normally in 18 patients (NB group) and inversely in 17 patients (RB group). Between-group differences and relationships between incisal and skeletal variables were analyzed based on lateral cephalograms at pretreatment, presurgery, postsurgery, posttreatment, and retention. Mandibular incisors were more labially inclined in the RB group than in the NB group from presurgery to retention. No significant between-group differences were observed in presurgical and postsurgical skeletal relationships. The NB group exhibited a larger overjet with deficient interincisal contact at postsurgery than the RB group. Skeletal Class III relationship was also more severe in the NB group at retention. More lingually inclined mandibular incisors at presurgery and larger overjet at postsurgery were correlated with a more severe skeletal Class III relationship at retention. Thus, establishing appropriate postsurgical overjet by sufficient presurgical mandibular incisor decompensation may play a significant role in postsurgical stability of Class III surgical orthodontic treatment.
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Tsai, Tzong-Ping, Chiung-Shing Huang, Chuan-Chuan Huang, and Lai-Chu See. "Distribution Patterns of Primary and Permanent Dentition in Children with Unilateral Complete Cleft Lip and Palate." Cleft Palate-Craniofacial Journal 35, no. 2 (March 1998): 154–60. http://dx.doi.org/10.1597/1545-1569_1998_035_0154_dpopap_2.3.co_2.
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Objective To investigate the distribution patterns of primary and permanent teeth in the cleft area and the numerical variation in teeth in unilateral complete cleft lip and palate (UCLP) patients. Design A survey of the dentition in UCLP patients. Setting Craniofacial Center, Chang Gung Memorial Hospital, Taipei, Taiwan. Patients 137 UCLP patients who met the following criteria: (1) have had at least one panoramic film taken, (2) the first panoramic film illustrates either primary or early mixed dentition. Evaluation of both permanent and primary dentition was available in 91 cases. Main Outcome Measures Two evaluators performed independent evaluations of number and distribution of teeth in UCLP patients. The hypothesis that there are two odontogenic origins for maxillary lateral incisors was proposed to explain the occurrence of distribution patterns of dentition in the cleft area and to explain differences between primary and permanent dentition in UCLP patients. Results Four distribution patterns in the cleft area were identified in both the primary and the permanent dentition. In the primary dentition, placement of the lateral incisor distal to the alveolar cleft was the predominant pattern (pattern y, 82.4%), followed by absence of the cleft side maxillary lateral incisor (pattern ab, 9.9%), presence of one tooth on each side of the alveolar cleft (pattern xy, 5.5%), and placement of the lateral incisor mesial to the alveolar cleft (pattern x, 2.2%). In the permanent dentition, the most common pattern was the absence of the maxillary lateral incisor on the cleft side (pattern AB, 51.8%), followed by lateral incisor placement distal to the alveolar cleft (pattern Y, 46%), lateral incisor placement mesial to the alveolar cleft (pattern X, 1.5%) and the presence of one tooth on each side of the alveolar cleft (pattern XY, 0.7%). The discrepancy between the distribution patterns of primary dentition and permanent dentition successors is 57.1%. Variations in tooth number in both primary and permanent dentition of UCLP patients occurred most often in the cleft area. Abnormalities in the number of teeth (hypodontia or hyper-dontia) outside the cleft area were more common in the permanent dentition than in the primary dentition (24.1% versus 4.4%). Conclusions Four distribution patterns in the cleft area were identified in both sets of dentition. Our findings of distribution patterns in UCLP patients support the hypothesis that there may be two odontogenic origins for maxillary lateral incisors. Clinicians involved in managing the dentition of UCLP patients should consider the high frequency of numerical variation both in and outside the cleft area before starting dental treatment.
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Suzuki, Akira, and Yasuhide Takahama. "Maxillary Lateral Incisor of Subjects with Cleft Lip and/or Palate: Part 1." Cleft Palate-Craniofacial Journal 29, no. 4 (July 1992): 376–79. http://dx.doi.org/10.1597/1545-1569_1992_029_0376_mliosw_2.3.co_2.
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As a pilot study, dental casts of 30 patients with unilateral cleft lip and palate were selected and examined from the longitudinal data in the Department of Orthodontics, Kyushu University Dental Hospital. Dental casts of the anterior teeth were sectioned at right angles to the long axis of the tooth 2 to 3 mm below the incisai edge. The teeth were differentiated according to their cross sections. They were classed as lateral incisors or other types by the ratio of labiolingual diameter to mesiodistal diameter and the flatness labiolingually. Dental casts of 309 additional patients with cleft alveolus were examined subjectively based on above findings. In primary dentition, 183 of 184 teeth on the cleft side were incisai type. One tooth was canine type. In permanent dentition, 42 of 78 teeth on the cleft side were conical type, 20 teeth were intermediate type, and 16 teeth were incisai type. As a conclusion, the tooth on the cleft side is almost certain to be a lateral incisor, not a supernumerary canine tooth. As well, their form was normal in the majority of the primary dentition, but malformed in the permanent one.
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Santos, Bianca Mota dos, Roberta Rezende Ribeiro, Adriana Sasso Stuani, Francisco Wanderley Garcia de Paula e. Silva, and Alexandra Mussolino de Queiroz. "Kabuki make-up (Niikawa-Kuroki) syndrome: dental and craniofacial findings in a Brazilian child." Brazilian Dental Journal 17, no. 3 (2006): 249–54. http://dx.doi.org/10.1590/s0103-64402006000300014.
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This article reports the case of a Brazilian child diagnosed with Kabuki make-up syndrome (KMS), addressing the clinical features observed, with emphasis on the disease-specific oral and craniofacial manifestations. The patient had the distinctive KMS craniofacial appearance, mild delayed mental development, fingers with prominent fingertip pads and visual deficit. The dental findings included fusion of the left mandibular incisors (central and lateral), gemination of the right mandibular central incisor and congenital agenesis of the right mandibular lateral incisor, in the primary dentition, as well as absence of both permanent mandibular lateral incisors. Fusion and gemination have not been previously referred to as typical dental features in KMS. The detection of unique dental findings, such as missing teeth and dental anomalies of form in the primary dentition by means of clinical and radiographic examinations, might consist of a helpful diagnosis parameter in identifying children who may have milder forms of Kabuki syndrome.
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Gyawali, Rajesh, and Varun Pratap Singh. "Analysis of maxillary anterior teeth proportion in relationship with lower facial height and malocclusion." Journal of College of Medical Sciences-Nepal 13, no. 2 (July 17, 2017): 262–67. http://dx.doi.org/10.3126/jcmsn.v13i2.16717.
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Background & Objectives: Maxillary anterior tooth to tooth proportion has a special value in dental esthetics. This study aimed to assess the apparent proportion of maxillary anteriors and possible association with lower anterior facial height and malocclusion type. Materials & Methods: One-hundred and sixty samples with well aligned maxillary dentition were selected and the lower anterior facial height was measured with digital caliper. Molar relationship was examined and intraoral frontal photograph was taken for digital measurement of tooth proportion. The ratio of maxillary canine to lateral and lateral to central incisors were measured and compared between gender and the sides. These ratios were further compared among various malocclusion type using ANOVA and its association with lower anterior facial height was evaluated with Pearson’s correlation.Results: Most of the samples had Class I molar relationship (70%) followed by Class II (23%) and Class III (7%). The mean lower anterior facial height was 62.82mm and ratio of maxillary lateral to central incisor and canine to lateral incisor was 0.68 and 0.76 respectively. No statistically significant difference was found when the ratio was compared between the gender and the sides. These ratios were statistically different from the golden ratio and has no significant correlation with lower anterior facial height. These mean ratios were also found similar across the malocclusion type.Conclusion: Ratio of apparent dimension of maxillary canine to lateral incisor and lateral to central incisor was different from the golden ratio and showed no association with lower anterior facial height and malocclusion type.
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Karhade, Ishani, and Meenal N. Gulve. "Management of Horizontal Root Fracture in the Middle Third via Intraradicular Splinting Using a Fiber Post." Case Reports in Dentistry 2016 (2016): 1–5. http://dx.doi.org/10.1155/2016/9684035.
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Radicular fractures in permanent teeth are uncommon injuries and account for only 0.5–7% of dental traumas. These fractures commonly result from a horizontal impact and are transverse to oblique in direction. Their incidence is more in the middle third of the root than at the apical and cervical thirds. This paper describes a case of complicated crown fracture of maxillary incisors along with horizontal root fracture at the middle third of maxillary right central and lateral incisor. The fractured root fragments of the upper right central and lateral incisor were united with the help of a glass fiber post after receiving an endodontic treatment. The other two incisors were treated endodontically followed by post endodontic restorations. Eventually the four incisors were restored with porcelain fused to metal crowns. A one-year follow-up revealed a well stabilized assembly of the root fragments and the post.
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Gupta, Sanjay Prasad, and Shristi Rauniyar. "Management of missing maxillary lateral incisor: A contemporary review." Orthodontic Journal of Nepal 11, no. 1 (August 16, 2021): 72–78. http://dx.doi.org/10.3126/ojn.v11i1.39092.
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Missing maxillary lateral incisor is the most prevalent developmental dental anomaly. The management of missing lateral incisor, either need to be closed and use canine as substitution or create space orthodontically for the prosthetic replacement of the missing lateral incisors. A careful diagnosis and treatment plan are deemed essential to address the patient’s needs as the spacing is present in the esthetic region of the jaw which is very challenging so it should be managed by multidisciplinary approach including specialists in orthodontics, prosthodontics, operative dentistry and periodontist. Space closure with canine lateralization option seems less invasive, treatment can be completed relatively in short period of time and it’s adaptation with the facial changes throughout life without having artificial prosthesis provided other factors favoring for this option. This review article describes the various treatment options and their ideal indications, contraindications, advantages and disadvantages as well as emphasize on some modifications in the treatment mechanics which is crucial to achieve the optimal esthetic and to improve the occlusion.
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Puttaravuttiporn, Pornputthi, Mutita Wongsuwanlert, Chairat Charoemratrote, and Chidchanok Leethanakul. "Volumetric evaluation of root resorption on the upper incisors using cone beam computed tomography after 1 year of orthodontic treatment in adult patients with marginal bone loss." Angle Orthodontist 88, no. 6 (June 18, 2018): 710–18. http://dx.doi.org/10.2319/121717-868.1.
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ABSTRACTObjectives:To determine upper incisor root resorption, volume loss, and the relationship between root volume loss and tooth movement after 1 year of orthodontic treatment in patients with marginal bone loss.Materials and Methods:A total of 30 women (46.3 ± 5.4 years old) with moderate upper incisor bone loss who required intrusion during orthodontic treatment were recruited. Pre- and post-treatment cone beam computed tomography images were reconstructed. Upper incisors at pre- and post-treatment were superimposed; labio- and palato-apical, middle, and coronal third root volumes were assessed. Tooth movement and alveolar bone height were measured from lateral cephalometric radiographs and cone beam computed tomography. Changes in root volume/alveolar bone height were compared using paired-sample t-tests, percentage root volume loss for each tooth/segment was evaluated by one-way analysis of variance, and the relationship between percentage root loss and degree of tooth movement was assessed by linear regression.Results:Mean root volume significantly decreased on the labio- and palato-apical aspects of 12 and labio-apical aspects of 21 and 22 (P ≤ .024). Palato-apical segment volume loss was greater on lateral than central incisors (P ≤ .016). Two-dimensional root length and cementoenamel junction-bone crest distance did not change between T0 and T1, with no significant relationship between tooth movement amount and percentage root volume loss.Conclusions:Delivery of 40 g intrusive force to the four upper incisors using a T-loop and the leveling phase lead to more apical root volume loss on lateral than central incisors. There was no relationship between extent of tooth movement and upper incisor root volume loss.
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Özer, Mete, Ismail Şener, and Mehmet Bayram. "Maxillary Canine Impactions Related to Impacted Central Incisors: Two Case Reports." Journal of Contemporary Dental Practice 8, no. 6 (2007): 72–81. http://dx.doi.org/10.5005/jcdp-8-6-72.
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Abstract Aim The purpose of this case report is to describe the combined surgical and orthodontic treatment of two cases with an impacted maxillary central incisor and canine in the same quadrant and to discuss the causal relationship between them. Background The most common causes of canine impactions are usually the result of one or more factors such as a long path of eruption, tooth size-arch length discrepancies, abnormal position of the tooth bud, prolonged retention or early loss of the deciduous canine, trauma, the presence of an alveolar cleft, ankylosis, cystic or neoplastic formation, dilaceration of the root, supernumerary teeth, and odontomas. Although impaction of the maxillary central incisor is almost as prevalent as impacted canines its etiology is different. The principal factors involved in causing the anomaly are supernumerary teeth, odontomas, and trauma. Reports Case #1 A 10.5-year-old girl in the early mixed dentition stage presented with a chief complaint of the appearance of her anterior teeth. She had a Class I skeletal pattern and a history of trauma to the maxillary central incisors at age five with premature exfoliation. Radiographs revealed an impacted upper right central incisor in the region of the nasal floor, delayed eruption of the maxillary permanent central incisor, and the adjacent lateral incisor was inclined toward the edentulous space. Treatment was done in two stages consisting of surgical exposure and traction of the impacted central incisor and fixed orthodontic treatment. Case #2 An 11.5-year-old girl presented for orthodontic treatment with the chief complaint of an unerupted tooth and the appearance of her upper anterior teeth. She was in the late mixed dentition period with a Class III skeletal pattern along with an anterior cross-bite with some maxillary transverse deficiency. The maxillary right canine and central incisor were absent, but the maxillary right deciduous canine was still present. Treatment included arch expansion followed by surgical exposure and traction of the impacted teeth and fixed orthodontic treatment. Summary This case report provides some evidence of a significant environmental influence of an impacted maxillary central incisor on the path of eruption of the ipsilateral maxillary canine. When an impacted maxillary central incisor exists, the maxillary lateral incisor's root might be positioned distally into the path of eruption of the maxillary canine preventing its normal eruption. Ongoing assessment and early intervention might help to prevent such adverse situations from occurring. Citation Bayram M, Özer M, Sener I. Maxillary Canine Impactions Related to Impacted Central Incisors: Two Case Reports. J Contemp Dent Pract 2007 September; (8)6:072-081.
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Hohn, Darren J., Daniel G. Deschler, and John A. Tucker. "Central Incisor Width as a Predictor of Appropriate Curette Size in Adenoidectomy." Annals of Otology, Rhinology & Laryngology 110, no. 9 (September 2001): 841–43. http://dx.doi.org/10.1177/000348940111000907.
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As inadvertent eustachian tube injury during adenoidectomy can have serious short- and long-term implications, a simple anatomic correlate that could predict the optimal curette choice for adenoidectomy, especially in severely hypertrophic cases, is beneficial. This study evaluates the correlation of the distance between the lateral borders of the upper central incisors and the distance between the tori tubarius in the nasopharynx. One hundred one consecutive patients undergoing adenoidectomy at a pediatric tertiary care hospital were enrolled in this study. The patients ranged in age from 7 months to 15 years. No complications were noted in any of the procedures. During the operation, the distance between the central upper incisors was measured in millimeters, as was the inter-tubarius width (ITW). A multiple regression analysis was completed to assess the correlation between central incisor width and ITW. Age and inter-incisor width were positively correlated with ITW in a statistically significant manner (p = .007 and p = .006, respectively). The distance between the lateral borders of the upper central incisors predicts the distance between the tori tubarius in the nasopharynx. Therefore, an adenoid curette the window of which does not overlap the lateral aspects of the central upper incisors can be used relatively safely, even in fields with poor visualization.
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Morais, Juliana Fernandes de, Marcos Roberto de Freitas, Karina Maria Salvatore de Freitas, Guilherme Janson, Nuria Cabral Castello Branco, and Marcelo Zanda. "Maxillary incisors mesiodistal angulation changes in patients with orthodontically treated anterior superior diastemas." Dental Press Journal of Orthodontics 17, no. 4 (August 2012): 65–71. http://dx.doi.org/10.1590/s2176-94512012000400015.
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OBJECTIVE: The aims of this study were to describe the patterns of maxillary incisor angulation in patients with upper interincisive diastemas, to evaluate angulation changes with treatment and posttreatment period, and to assess whether there are association between incisor angulation and interincisive diastema relapse. METHODS: The sample comprised 30 Class I or Class II patients with at least one pretreatment anterior diastema of 0.77 mm or greater after eruption of maxillary permanent canines. Data were obtained from panoramic radiographs at pretreatment, posttreatment and at least 2 years post-retention. RESULTS: Incisors presented a mesial tipping tendency after treatment, but only lateral incisors showed significant changes between pre and posttreatment stages. CONCLUSION: Regarding post-retention period, no changes were found. Finally, no relation was found between diastema relapse and maxillary incisor axial angulation.