Relevant bibliographies by topics / Molar

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Academic literature on the topic 'Molar'

Author: Grafiati
Published: 4 June 2021
Last updated: 13 June 2025

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Journal articles on the topic "Molar"

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Shan, Wenfeng, Liming Wen, and Weiwei Li. "Evaluation of the Clinical Efficacy of Orthodontic Retention of Third Molars After Extraction of First or Second Molars." Academic Journal of Science and Technology 9, no. 1 (2024): 75–79. http://dx.doi.org/10.54097/6kmddf92.

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This paper explores the clinical efficacy of orthodontic retention of third molars after extraction of the first or second molars. Studies show that the use of the second molar near the movement to replace the first molar, retain the third molar although need a long treatment time and higher treatment cost, but promote the gap of tissue regeneration, preserve healthy natural teeth, restore occlusal stability, but also can avoid the late repair of the first molar or second molar. In addition, the second molar after moving near the third molar is also conducive to the eruption of the third molar, maximizing the use of the third molar, to form a healthy and complete functional tooth line. Therefore, For patients with severe removal of the first or second molars, poor prognosis, severe periapical disease, and loss of the first or second molars, the treatment method of replacing the second molar for the first molar and the third molar for the second molar can be an effective treatment option.
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Baik, Un-Bong, Jin Hye Kang, Ui-Lyong Lee, Nikhilesh R. Vaid, Yoon-Ji Kim, and Dong-Yul Lee. "Factors associated with spontaneous mesialization of impacted mandibular third molars after second molar protraction." Angle Orthodontist 90, no. 2 (2019): 181–86. http://dx.doi.org/10.2319/050919-322.1.

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ABSTRACT Objectives: To investigate factors associated with spontaneous mesialization of impacted third molars after second molar protraction to close the space caused by a missing mandibular first molar (L-6) or retained deciduous mandibular second molars with a missing succedaneous premolar (L-E). Materials and Methods: Panoramic radiographs of patients treated with mandibular second molar protraction to close the space due to missing L-6 or L-E (14 males, 36 females, mean age = 18.6 ± 4.4 years) were analyzed before treatment (T1) and after second molar protraction (T2). Factors associated with the amount of third molar mesialization were investigated using regression analyses. Results: Mandibular second molars were protracted by 5.1 ± 2.1 mm and 5.8 ± 2.7 mm, measured at the crown and root furcation, respectively. After second molar protraction, third molars showed spontaneous mesialization by 4.3 ± 1.6 mm and 3.8 ± 2.6 mm, measured at the crown and root furcation, respectively. Nolla's stage of the third molar at T1 (B = 0.20, P = .026) and second molar protraction time (B = 0.04, P = .042) were significantly associated with the amount of third molar mesialization. Conclusions: Greater third molar mesialization was observed when Nolla's stage of the third molar was higher before treatment and when the second molar protraction time was longer.
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Orhan, Büyük Kaan, Dilek Yılmaz, Mehmet Ozgur Ozemre, Kıvanç Kamburoğlu, Orhan Gulen, and Ayse Gulsahi. "Evaluation of Mandibular Third Molar Region in a Turkish Population Using Cone-Beam Computed Tomography." Current Medical Imaging Formerly Current Medical Imaging Reviews 16, no. 9 (2020): 1105–10. http://dx.doi.org/10.2174/1573405616666200103094611.

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Objectives: To evaluate impacted mandibular third molar tooth region and obtain linear measurements using CBCT images and to assess the relationship between the impacted third molar and the mandibular canal. Methods: CBCT scans of 351 patients (208 females, 143 males) were assessed. Age, gender, and impaction site were recorded for each patient. The relationship of third molars with the vertical axis of second molars, 2nd molar resorption and the relationship between third molar apices and the mandibular canal were assessed. In addition, the distance between ramus and second molar, mesiodistal width of the third molar, the angle between third molar and second molar, and width of the third molar capsule were measured. Binary Logistic Regression, Chi-Square Test, and General Linear Model were used for statistical analysis. Results: The highest percentage of impaction was found for mesioangular followed by transversal and vertical. The transversal impacted third molars revealed a significant association with adjacent second molar root resorption (p<0.001). There was a statistical significance between the second molar resorption and distance between ramus and second molar (p<0.001). The mesioangular impacted third molars revealed significant relation with the mandibular canal (p<0.05). The most frequent variation found was the dental canal followed by the retromolar canal. In general, higher measurement values were obtained for men when compared to women (p<0.05). Conclusion: CBCT assessment of the third molar region provided useful information regarding impacted mandibular third molar surgery operations.
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Enabulele JE and OMO JO. "Is impacted third molar a significant contributor to susceptibility of the adjacent second molar to caries?" Ibom Medical Journal 12, no. 1 (2019): 37–43. http://dx.doi.org/10.61386/imj.v12i1.210.

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CONTEXT: Several studies have assessed the association between impacted third molar and presence of distal caries on the second molar, however there is paucity of studies on how significantly impacted third molar contributes to dental caries experience on the second molarOBJECTIVE: To determine if impacted third molar is a significant contributor to the susceptibility of the adjacent molar to dental caries.MATERIAL AND METHODS: A prospective cross sectional study of patients with at least one carious second molar. Information on demographic characteristics, number of carious second molar, classification of the carious lesions based on site of occurrence of the caries, extent of the carious lesion, presence of a third molar and status of the third molar (impacted or not impacted). The data so obtained was analyzed using IBM SPSS.
 RESULTS: A total of 88 patients with 126 carious second molars with more females. The mandibular left second molar was the tooth with the highest frequency of caries. Occlusal caries accounted for 71.4% of the carious lesions while distal caries was observed in 28.6% of the second molars. Statistically significant association between the surface affected by the carious process and presence of impacted third molar with 75.0% of second molars with a distal carious lesion having an impacted adjacent third molar
 CONCLUSION: The second molars are susceptible to caries however an adjacent impacted third molar could be a significant contributor to susceptibility of the second molar to distal caries.
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Kaye, E., B. Heaton, E. A. Aljoghaiman, A. Singhal, W. Sohn, and R. I. Garcia. "Third-Molar Status and Risk of Loss of Adjacent Second Molars." Journal of Dental Research 100, no. 7 (2021): 700–705. http://dx.doi.org/10.1177/0022034521990653.

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The prophylactic removal of asymptomatic third molars is a common but controversial procedure often rationalized as necessary to prevent future disease on adjacent teeth. Our objective in this retrospective cohort study of adult men was to examine whether second-molar loss differed by baseline status of the adjacent third molar, taking into account the individual’s overall state of oral hygiene, caries, and periodontitis. We analyzed data from participants of the VA Dental Longitudinal Study who had at least 1 second molar present at baseline and 2 or more triennial dental examinations between 1969 and 2007. We classified second molars by third-molar status in the same quadrant: unerupted, erupted, or absent. Tooth loss and alveolar bone loss were confirmed radiographically. Caries and restorations, calculus, and probing depth were assessed on each tooth. We estimated the hazards of second-molar loss with proportional hazards regression models for correlated data, controlling for age, smoking, education, absence of the first molar, and whole-mouth indices of calculus, caries, and periodontitis. The analysis included 966 men and 3024 second molar/first molar pairs. Follow-up was 22 ± 11 y (median 24, range 3–38 y). At baseline, 163 third molars were unerupted, 990 were erupted, and 1871 were absent. The prevalence of periodontitis on the second molars did not differ by third-molar status. The prevalence of distal caries was highest on the second molars adjacent to the erupted third molars and lowest on the second molars adjacent to the unerupted third molars. Relative to the absent third molars, adjusted hazards of loss of second molars were not significantly increased for those adjacent to erupted (hazard ratio [HR] = 0.96, 95% confidence interval [CI] = 0.79–1.16) or unerupted (HR = 1.25, 95% CI = 0.91–1.73) third molars. We found similar results when using alveolar bone loss as the periodontitis indicator. Our findings suggest that retained third molars are not associated with an increased risk of second-molar loss in adult men.
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Flores-Mir, Carlos, Lisa McGrath, Giseon Heo, and Paul W. Major. "Efficiency of molar distalization associated with second and third molar eruption stage." Angle Orthodontist 83, no. 4 (2012): 735–42. http://dx.doi.org/10.2319/081612-658.1.

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ABSTRACT Objective: To evaluate the efficiency of molar distalization associated with the second and third molar eruption stage. Materials and Methods: A systematic computerized database search was conducted using several databases. Adaptations of the terms molar distalization and distalizing appliances were used. The reference lists of all the selected articles were also searched for any potential articles that might have been missed in the electronic search. The data provided in the selected publications were grouped and analyzed in terms of molar distalization with respect to various eruption stages of maxillary second and third molars. Results: Out of the 13 initially identified articles only four fulfilled the final selection criteria. Three of the four studies showed no statistical significance in linear molar distalization based on the eruptive stage of the second and/or third molars, while one study found that the amount of distal movement of the first molars was significantly greater in the group with unerupted second molars. Only one study found that the amount of molar tipping that occurred as a result of distalization was related to the eruption stage of the maxillary molars. Similarly, three of the four studies found that molar distalization time was not significantly affected by eruption of the second or third molars. Conclusion: The effect of maxillary second and third molar eruption stage on molar distalization—both linear and angular distalization—appears to be minimal. This conclusion is only based on low–level of evidence clinical trials. The large variability in the outcomes should be considered clinically.
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Butt, Hira, Maria Jabbar, Dur e. Shumyle, et al. "Relationship of Oral Pathologies Associated with Second Molars to the Patterns of Adjacent Impacted Third Molar." Pakistan Journal of Medical and Health Sciences 16, no. 4 (2022): 554–56. http://dx.doi.org/10.53350/pjmhs22164554.

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Objective: To assess the relationship of oral pathologies associated with second molars to the patterns of adjacent impacted third molar. Methodology: A cross sectional descriptive study was conducted on 385 Orthopantomograms (OPG) of patients. The study was conducted in the Institute of Dentistry, CMH Lahore Medical College, Lahore, Sharif Medical and Dental College (SMDC) and Services Institute of Medical Sciences (SIMS) over a period of three months from December 2020 to February 2021. The Pell and Gregory classification was used for depth of third molar impaction and ramus relationship of mandibular third molars. Winter`s classification was used for classifying the angle of impaction. Results: The association between presence of caries (p=≤0.001) and external resorption (p=≤0.001) in second mandibular molar with depth of impaction of adjacent an impacted third molar, ramus relationship of third molar with presence of external root resorption in second molar (p=≤0.001) and presence of caries (p=0.005), periapical radiolucencies (p=0.009) and external root resorption (p=≤0.001) in second molar with the angle of impacted third molar were significant. The association of presence of caries, pericoronal, periapical radiolucencies and external root resorption in the maxillary second molars with the depth and angle of adjacent impacted third molars was not significant. Conclusion: The carious lesions were the highest where the third molar had class A depth of impaction while the maximum external resorption was seen where the third molar had class C depth of impaction. Second mandibular molars adjacent to impacted third molars in class 2 ramus relationship had the most external root resorption. It was seen that second molars adjacent to the impacted third molars with mesioangular impactions had the highest percentage of caries and periapical radiolucencies while those adjacent to third molars with horizontal angle of impaction showed the maximum external root resorption. Keywords: Second molars, impacted third molars, pericoronal radiolucency, periapical radiolucency, external root resorption, caries
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Baik, Un-Bong, Hong-Beom Choi, Yoon-Ji Kim, Dong-Yul Lee, Junji Sugawara, and Ravindra Nanda. "Change in alveolar bone level of mandibular second and third molars after second molar protraction into missing first molar or second premolar space." European Journal of Orthodontics 41, no. 5 (2019): 513–18. http://dx.doi.org/10.1093/ejo/cjz001.

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Summary Objective To investigate the factors associated with the change in alveolar bone level of mandibular second and third molars after second molar protraction into the space of the missing first molar (L6) or second premolar (LE). Methods Fifty-one patients in whom space of the missing L6 or LE was treated with second molar protraction (13 males, 38 females, mean age 19.6 ± 4.7 years) from 2003 to 2015 were included. The alveolar bone level and position and angulation of the mandibular second and third molars were measured in panoramic radiographs at pre-treatment (T1), and after the alignment of the third molars following second molar protraction (T2). Factors associated with alveolar bone loss on the distal aspect of the mandibular second molars were assessed using linear regression analysis. Results Age at T1 (P < 0.001) and third molar angulation at T1 (P = 0.002) were significant factors for the prediction of alveolar bone level distal to the second molars. Limitation This study used two-dimensional panoramic radiographs, and we could observe only the interproximal bone level. Conclusions After second molar protraction into the missing first molar or second premolar space, mandibular second molars may exhibit alveolar bone resorption in the distal root in older patients and in those with mesially tilted third molars before treatment.
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Baik, Un-Bong, Jae-Yul Jung, Hyung-Ju Jung, et al. "Alveolar bone changes after molar protraction in young adults with missing mandibular second premolars or first molars." Angle Orthodontist 92, no. 1 (2021): 64–72. http://dx.doi.org/10.2319/022321-147.1.

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ABSTRACT Objectives To assess the changes in alveolar bone of the mandibular second molars following molar protraction and investigate the factors associated with the alveolar bone changes. Materials and Methods Cone-beam computed tomography of 29 patients (mean age 22.0 ± 4.2 years) who had missing mandibular premolars or first molars and underwent molar protraction were reviewed. Alveolar bone level was measured as the distance from the cementoenamel junction at six points, buccal, lingual, mesiobuccal (MB), mesiolingual (ML), distobuccal (DB), and distolingual (DL), of the second molars at pretreatment (T0) and after molar protraction (T1). Factors associated with alveolar bone changes at the distal and mesial of the second molars were assessed. Results Mean alveolar bone changes ranged from −1.2 mm (bone apposition) to 0.8 mm (bone resorption). The presence of a third molar impaction at T0 (P < .001), third molar angulation at T0 (P < .001), and Nolla's stage of third molar at T0 (P = .005) were significantly associated with alveolar bone level changes distal to the second molars. Treatment duration (P = .028) was significantly associated with alveolar bone level changes mesial to the second molar. Conclusions Patients with impacted third molars, third molars at an earlier stage of development, and mesially angulated third molars at pretreatment may have less alveolar bone resorption distal to the second molars following protraction. Patients with increased treatment time may have reduced alveolar bone resorption mesial to the second molars.
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Ko, Daisy (Jihyung), Tess Kelly, Lacey Thompson, et al. "Timing of Mouse Molar Formation Is Independent of Jaw Length Including Retromolar Space." Journal of Developmental Biology 9, no. 1 (2021): 8. http://dx.doi.org/10.3390/jdb9010008.

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For humans and other mammals to eat effectively, teeth must develop properly inside the jaw. Deciphering craniodental integration is central to explaining the timely formation of permanent molars, including third molars which are often impacted in humans, and to clarifying how teeth and jaws fit, function and evolve together. A factor long-posited to influence molar onset time is the jaw space available for each molar organ to form within. Here, we tested whether each successive molar initiates only after a minimum threshold of space is created via jaw growth. We used synchrotron-based micro-CT scanning to assess developing molars in situ within jaws of C57BL/6J mice aged E10 to P32, encompassing molar onset to emergence. We compared total jaw, retromolar and molar lengths, and molar onset times, between upper and lower jaws. Initiation time and developmental duration were comparable between molar upper and lower counterparts despite shorter, slower-growing retromolar space in the upper jaw, and despite size differences between upper and lower molars. Timing of molar formation appears unmoved by jaw length including space. Conditions within the dental lamina likely influence molar onset much more than surrounding jaw tissues. We theorize that molar initiation is contingent on sufficient surface area for the physical reorganization of dental epithelium and its invagination of underlying mesenchyme.
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Dissertations / Theses on the topic "Molar"

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Farias, María Ligia. "Hipomineralización molar-incisiva." Trabajo final de especialización, Universidad Nacional de Cuyo. Facultad de Odontología, 2020. http://bdigital.uncu.edu.ar/15924.

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La Hipomineralización Molar - Incisiva forma parte de los defectos del desarrollo del esmalte producidos durante la fase de mineralización en la amelogénesis, dando como resultado niveles bajos de calcio y fosfato. Su prevalencia en el mundo varía de un 3% a un 40%. Este defecto cualitativo, se presenta en el esmalte clínicamente, como cambios en la traslucidez y en el matiz (opacidades demarcadas) que va desde un color blanco crema a un amarillo amarronado. La hipomineralización afecta frecuentemente a primeros molares y a incisivos permanentes, pudiendo afectar a la dentición temporaria, con mayor frecuencia a 2dos molares y caninos temporarios. Su etiología no es clara y parece estar asociada a factores prenatales, perinatales y al medio ambiente. El diagnóstico precoz de las lesiones determinará el plan de tratamiento, dependiendo de la severidad de las mismas. En casos leves se cuenta con materiales sellantes y remineralizantes, y en casos moderados se opta por resinas compuestas, coronas preformadas y de laboratorio. En situaciones más graves la indicación es la exodoncia. Por todo lo expuesto, es fundamental fortalecer al paciente y a los padres en cuanto a las medidas preventivas.<br>Molar Incisor Hypomineralization is part of the enamel development defects produced during the mineralization phase in amelogenesis, resulting in low calcium and phosphate levels. Its prevalence in the world varies from 3% to 40%. This qualitative defect appears clinically in enamel, as changes in translucency and hue (demarcated opacities) ranging from creamy white to brownish yellow. Hypomineralization frequently affects the first molars and the permanent incisors, and may affect the temporary dentition, most often the second molars and the temporary canines. Its etiology is unclear and appears to be associated with prenatal, perinatal and environmental factors. Early diagnosis of injuries will determine the treatment plan, depending on the severity of the injuries. In mild cases there are sealing and remineralizing materials, and in moderate cases it is selected the composite resins, or preformed and laboratory crowns. In more serious situations the indication is tooth extraction. For all of the above, it is essential to strengthen the patient and parents regarding preventive measures.<br>Fil: Farias, María Ligia. Universidad Nacional de Cuyo. Facultad de Odontología.
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Maia, Mariana Marques. "Estudo de prevalência de terceiros molares inclusos e impactados numa população da UFP." Master's thesis, [s.n.], 2014. http://hdl.handle.net/10284/4581.

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Projeto de Pós-Graduação/Dissertação apresentado à Universidade Fernando Pessoa como parte dos requisitos para obtenção do grau de Mestre em Medicina Dentária<br>Na literatura é demostrado algum desconhecimento relativamente à inclusão e impactação do terceiro molar, não sendo ainda possível esclarecer a sua etiologia. Vários estudos têm sido feitos relativos à prevalência destas retenções na cavidade oral mas ainda não foi possível chegar-se a um consenso. O objetivo principal deste estudo foi avaliar a prevalência de terceiros molares inclusos e impactados numa população da Universidade Fernando Pessoa e caracterizar a posição das peças dentárias verificando a relação segundo algumas variáveis. Foi realizada uma revisão bibliográfica narrativa do tema com as palavras- chave: “third molar”; “impaction”; “inclusion”; “third molar pathologies”; erupted third molar”; retained third molar”; “unerupted tooth”; “prevalence of third molars” ; “third molar AND impacted ”; “third molar AND inclusion”; “wisdom tooth”. Os motores de busca utilizados foram a PubMed, Scielo, Science Direct, e B-On. Posteriormente foi realizada uma investigação científica com uma amostra de 250 ortopantomografias dos processos clínicos das Clínicas Pedagógicas da Universidade Fernando Pessoa dos pacientes com idades iguais ou superiores a 18 anos no período de 2009 a 2013. No estudo realizado verificou-se que a prevalência de terceiros molares inclusos ou impactados seria de 21% com intervalo de confiança a 95% e poder estatístico 20%. A proporção apresentada dos pacientes que apresentavam pelo menos um terceiro molar incluso ou impactado situou-se entre 19,8% e 29,7%. Dos pacientes estudados e das peças dentárias encontradas e avaliadas, 8,5% pertenciam a terceiros molares inclusos e 12,9% a terceiros molares impactados, sendo que 78,6% dos terceiros molares encontrados se encontravam na cavidade oral já erupcionados e em oclusão. Por sua vez, a classificação mais encontrada foi a da inclinação vertical com 46,4% dos casos, seguindo-se a distoangular com 46,2%. Continuam a ser necessários estudos nesta área para que se encontre mais concordância e valores mais significativamente expressivos. Literature has demonstrated some unfamiliarity with the inclusion and impaction of the third molar and it’s not yet possible to clarify its etiology. Several studies have been done concerning the prevalence of these deductions in the oral cavity but still it has not been possible to reach a consensus. The main objective of this study was to evaluate the prevalence of impacted or included third molars in a population of University Fernando Pessoa, and to characterize the position of the dental specimens by verifying the relationship according to some variables. A narrative literature review of the theme was performed using the key words: “third molar”; “impaction”; “inclusion”; “third molar pathologies”; erupted third molar”; retained third molar”; “unerupted tooth”; “prevalence of third molars”; “third molar AND impacted”; “third molar AND inclusion”; “wisdom tooth”. The search engines used were PubMed, Scielo, Science Direct and B-On. Subsequently, a scientific investigation was conducted with a sample of 250 panoramic radiographs of clinical processes of the University Fernando Pessoas’ Pedagogical Clinics, relative to patients with ages greater than or equal to 18 years old, between 2009 and 2013. In the study it was found that the prevalence of impacted or included third molars would be 21% with a confidence interval of 95% and 20% statistical power. The proportion of patients who presented at least one impacted or included third molar was between 19.8% and 29.7%. With regards to the patients studied and the dental pieces evaluated, 8.5% belonged to included third molars and 12.9% to impacted third molars, while 78.6% of the third molars were found already erupted and in occlusion in the oral cavity. On the other hand, the vertical inclination was the classification most found in the study, with 46.4% of cases, followed by the distoangular with 46.2%. More studies need to be done in this area in order to find more agreements and significantly more expressive values.
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Parreira, Ana Rita Carvalho Baptista Matos. "Autotransplante do terceiro molar." Master's thesis, Faculdade de Medicina Dentária da Universidade do Porto, 2009. http://hdl.handle.net/10216/61105.

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Parreira, Ana Rita Carvalho Baptista Matos. "Autotransplante do terceiro molar." Dissertação, Faculdade de Medicina Dentária da Universidade do Porto, 2009. http://hdl.handle.net/10216/61105.

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Abdolahi, Mina Eileen. "The relationship between the absence of third molars and the development and eruption of the adjacent second molar." Thesis, University of Iowa, 2013. https://ir.uiowa.edu/etd/2429.

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The purpose of this cross-sectional study was to determine whether patients exhibiting third molar agenesis also exhibit delayed development and/or eruption of the adjacent second molar. The initial panoramic radiographs of 739 patients, 13-17 years of age, from the University of Iowa's Department of Orthodontics were examined. The developmental stage of each second molar according to Demirjian's 8-stage classification system, the eruption stage of each second molar, along with the presence or absence of each third molar were recorded, and Pearson chi-squared tests were used to determine differences in developmental and eruptive timing between those missing third molars and those with third molars present. We conclude that patients missing their maxillary third molars exhibit delayed development of the adjacent maxillary second molars. In addition, patients missing any of their four third molars exhibit delayed eruption of their adjacent second molars. The findings also suggest that mandibular second molars develop later than, but erupt earlier than, maxillary second molars.
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Bernini, Gabriel Fiorelli. "Avaliação radiográfica da movimentação do segundo molar inferior após a exodontia do terceiro molar." Universidade de São Paulo, 2009. http://www.teses.usp.br/teses/disponiveis/25/25132/tde-29052009-092612/.

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Muitos pacientes submetidos à exodontia de terceiros molares relatam, no pósoperatório, que percebem alterações na oclusão. Por isso é interessante avaliar se realmente existe esta possível movimentação para distal dos segundos molares inferiores após a exodontia dos terceiros molares. Os objetivos deste trabalho foram analisar e verificar se existe variação da angulação do longo eixo do segundo molar em relação ao longo eixo do primeiro molar por meio de tomadas radiográficas periapicais digitais pelo sistema Digora®. A amostra constituiu-se de 20 pacientes entre 15 e 25 anos de idade que possuíam terceiros molares inferiores não irrompidos, bilateralmente, com indicação para extração e que se apresentavam de maneira simétrica com relação ao seu posicionamento. Os dentes foram extraídos, sendo um dos lados mantido apenas o coágulo (grupo controle) e o outro lado (grupo experimental) recebeu o enxerto do material proposto e membrana de cortical óssea bovina desmineralizada (Gen-derm). No Adobe Photoshop 7.0 foi possível realizar os traçados dos longos eixos dos primeiros e segundos molares inferiores e a intersecção entre eles. O programa ImageJ 1.41 foi responsável pela obtenção dos valores das angulações. Os exames foram realizados utilizando medidas em imagens obtidas no controle pós-operatório imediato, de 2, 6 e 24 meses nos dois grupos estudados. Os resultados mostraram que não houve diferença estatisticamente significante entre os grupos experimental e controle, e também não houve diferença ao longo do tempo, sugerindo que não existe movimentação para distal dos segundos molares inferiores após a extração dos terceiros molares e alterações na oclusão. Unitermos: Terceiro molar, Radiografia digital, Movimentação dentária.<br>Many patients submitted to the extraction of third molars, report, postoperatively, that they feel alterations in their occlusion. Thus, it is interesting to assess whether this possible movement to the distal of lower second molars, following the removal of third molars, really exists. This work aimed at analyzing and verifying, through digital periapical radiographies of the Digora® System, whether the angulation of the second molar´s long axis varies in relation to that of the first molar. The sample was comprised of 20 patients between 15 and 25 yrs, who presented non-erupted lower third molars, bilaterally, referred to extraction and in a symmetrical manner, in relation to their position. The teeth were extracted, being maintained, in one of the sides, only the clot (control group), while the other side (experimental group) received the graft of the proposed material and demineralized cortical bone bovine membrane (Gen-derm). In the Adobe Photoshop 7.0, it was possible to perform the outlining of the long axes of lower first and second molars and the intersection between them. The 1.41 ImageJ Program allowed the angulations values, and the exams were performed by utilizing measures in images obtained in the immediate postoperative control of 2, 6 and 24 months, in the groups studied. No statistically significant difference was seen between the experimental and control groups, as there was no difference as time passed, suggesting that there is no movement towards the distal of lower second molars, following the extraction of third molars and alterations in the occlusion.
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Patussi, Nadia Maria. "Movimento, erupção e posicionamento do segundo molar permanente apos exodontia do primeiro molar permanente." reponame:Repositório Institucional da UFSC, 1988. https://repositorio.ufsc.br/handle/123456789/112220.

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Torres, Gina Delia Roque 1987. "Avaliação da relação do assoalho do seio maxilar com os ápices dentais por meio da radiografia panorâmica e tomografia computadorizada de feixe cônico = Assessment of the relationship of the maxillary sinus floor with dental apices by panoramic radiography and cone beam computed tomography." [s.n.], 2013. http://repositorio.unicamp.br/jspui/handle/REPOSIP/288920.

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Orientador: Frab Norberto Bóscolo<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Odontologia de Piracicaba<br>Made available in DSpace on 2018-08-22T01:44:48Z (GMT). No. of bitstreams: 1 Torres_GinaDeliaRoque_M.pdf: 6495208 bytes, checksum: 797b881a2825dc0c4b6da71903f696a5 (MD5) Previous issue date: 2013<br>Resumo: O objetivo neste estudo foi pesquisar qual é a imagem que oferece melhor informação qualitativa e quantitativa, comparando a radiografia panorâmica com a tomografia computadorizada de feixe cônico, na avaliação da relação entre o seio maxilar e os ápices dentais. Para tanto, foi utilizada uma amostra de conveniência de 109 imagens de radiografia panorâmica e de TCFC, dos mesmos pacientes. Três observadores calibrados avaliaram um total de 1.875 ápices, que foram classificados de acordo com sua relação topográfica e mensurados quando o ápice se encontrava aquém ou além do assoalho do seio maxilar, em ambas as modalidades de imagens. Concordância entre as duas técnicas de imagens foram examinadas estatisticamente. Após um intervalo de 30 dias, a avaliação foi repetida em 25% da amostra para avaliar estatisticamente a concordância intraobservador; os valores encontrados para o Kappa ponderado na avaliação qualitativa e o coeficiente de correlação intraclasse para a avaliação quantitativa representaram correlação entre considerável-quase perfeito e excelente, respectivamente. Para observar a concordância entre as duas imagens, o Kappa ponderado na avaliação qualitativa mostrou uma leve concordância para as raízes palatinas dos primeiros molares do lado direito e dos segundo molares. Quando comparados os valores da avaliação quantitativa pelo coeficiente de correlação intraclasse, houve pobre concordância para as raízes palatinas do primeiro molar esquerdo e dos segundos molares, como também para as raízes mesiovestibulares dos segundos molares direitos e disto-vestibulares dos segundos molares esquerdos. Concluiu-se que há uma baixa concordância entre as duas modalidades de imagens quando as raízes se encontram em contato com o assoalho do seio maxilar ou quando foi observada uma projeção das raízes além do assoalho do mesmo na radiografia panorâmica; e uma alta concordância da radiografia panorâmica com a tomografia computadorizada de feixe cônico quando as raízes se encontram aquém do assoalho do seio maxilar<br>Abstract: The aim of this study was to assess what is the best image that offers better qualitative and quantitative information comparing the panoramic radiography with cone beam computed tomography to evaluate the relationship between the maxillary sinus and dental apices. For this, we used a convenience sample of 109 images of panoramic radiography and CBCT, from the same patients. Three calibrated observers evaluated a total of 1,875 apices, which were classified according to their topography relationship and measured when the apex was beyond/below the maxillary sinus floor in both imaging modalities. Agreement between the two imaging techniques was examined statistically. After an interval of 30 days, the assessment was repeated in 25% of the sample to statistically evaluate the intra-observer, the values found in the kappa test for qualitative assessment and the intraclass correlation coefficient for quantitative assessment represented a considerable - almost perfect correlation and excellent, respectively. To observe the correlation between the two images, the Kappa test for quality assessment showed a slight correlation to the palatal roots of the right first molars and second molars. When comparing the values of the quantitative assessment by intraclass correlation coefficient, there was poor agreement for the palatal roots of the left first molar and second molar, and also for the mesio-buccal roots of the right second molars and disto-buccal of the left second molars. It was concluded that there is a poor correlation between the two imaging modalities when the roots are in contact or when a projection of the roots was observed beyond the maxillary sinus floor in panoramic radiography, and a high concordance of panoramic radiography with cone beam computed tomography when the roots are below the maxillary sinus floor<br>Mestrado<br>Radiologia Odontologica<br>Mestra em Radiologia Odontológica
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Siddiqi, Allauddin. "Antibiotic prophylaxis in third molar surgery." Thesis, University of Western Cape, 2007. http://etd.uwc.ac.za/index.php?module=etd&action=viewtitle&id=gen8Srv25Nme4_3405_1260177615.

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<p><font face="Tahoma"> <p align="left">The purpose of this study is to evaluate the need for prophylactic antibiotic treatment in third molar surgery and to establish specific guidelines for antibiotic prophylaxis in the department of Maxillo-Facial and Oral Surgery (MFOS) at Tygerberg Academic, Groote Schuur and Mitchells Plain Hospitals.</p> </font></p>
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Jeremias, Fabiano [UNESP]. "Avaliação genética da hipomineralização molar-incisivo." Universidade Estadual Paulista (UNESP), 2013. http://hdl.handle.net/11449/104276.

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Made available in DSpace on 2014-06-11T19:33:01Z (GMT). No. of bitstreams: 0 Previous issue date: 2013-07-18Bitstream added on 2014-06-13T19:03:57Z : No. of bitstreams: 1 jeremias_f_dr_arafo.pdf: 1118443 bytes, checksum: e7afcb1665a0dcd5f4b05868de303e04 (MD5)<br>Distúrbios genéticos durante o desenvolvimento dentário influenciam na variação do número e formada dentição. Este é o primeiro estudo a avaliar se a variação genética nos genes da formação do esmalte dentário está associada com a Hipomineralização Molar-Incisivo (HMI), levando também em consideração, a experiência de cárie. Amostras de DNA de 71 casos (com HMI) e 89 controles (não afetados) de Araraquara/SP (Brasil) foram analisadas. Onze marcadores em cinco genes [ameloblastina (AMBN), amelogenina (AMELX), enamelina (ENAM), tuftelina (TUFT1), e proteína 11 interagindo com tuftelina (TFIP11)] foram genotipados pelo método TaqMan. O teste Qui-quadrado foi utilizado para comparar as frequências alélicas e genotípicas entre os grupos caso e controle. A experiência de cárie no grupo HMI também foi avaliada para a associação com a variação genética nos genes da formação do esmalte. Os marcadores rs3796704 (ENAM), rs4694075 (AMBN); rs5997096/rs134136 (TFIP11), foram associados com a HMI (p<0.05). Associações dos marcadores rs5997096/rs134136(TFIP11), rs12640848/rs3796704 (ENAM) e rs17878486 (AMELX) (p<0.05) com a cárie dentária foram observadas. O presente estudo sugere possibilidade de associação entre o esmalte hipomineralizado e variação genética nos genes da formação do esmalte dentário<br>Genetic disturbances during dental development influence variation of number and shape of the dentition. This is the first study that tested if genetic variation in enamel formation genes is associated with molar-incisor hypomineralization (MIH), also taking into consideration caries experience. DNA samples from 71 cases with MIH and 89 unaffected controls from Araraquara/SP (Brazil) were studied. Eleven markers in five genes [ameloblastin (AMBN), amelogenin (AMELX), enamelin (ENAM), tuftelin (TUFT1), and tuftelin-interacting protein 11 (TFIP11)] were genotyped by the TaqMan method. Chi-square was used to compare allele and genotype frequencies between cases with MIH and controls. Distinct caries experience within the MIH group was also tested for association with genetic variation in enamel formation genes. The markers, rs3796704 (ENAM), rs4694075 (AMBN); rs5997096/rs134136 (TFIP11), were associated with MIH (p<0.05). Associations between rs5997096/rs134136 (TFIP11), rs12640848/rs3796704 (ENAM) e rs17878486 (AMELX) (p<0.05) markers could be seen with caries. This study suggests a possible association between hypomineralized enamel and genetic variation in the genes of the enamel formation
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Books on the topic "Molar"

1

Koerner, Karl R. Clinical procedures for third molar surgery. PennWell Books, 1986.

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Koerner, Karl R. Clinical procedures for third molar surgery. 2nd ed. PennWell Books, 1995.

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Bekes, Katrin, ed. Molar Incisor Hypomineralization. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-31601-3.

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Simpson, George Jensen. Friction in molar attachments. University of Birmingham, 2000.

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Knutsson, Kerstin. The mandibular third molar: Dentists' judgement in the removal of asymptomatic molars. Department of Oral Radiology, Faculty of Odontology, Lund University, 1996.

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Peters, Ove A., ed. The Guidebook to Molar Endodontics. Springer Berlin Heidelberg, 2017. http://dx.doi.org/10.1007/978-3-662-52901-0.

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National Institutes of Health (U.S.). Office of Clinical Center Communications, ed. Preparing for third molar removal. Clinical Center, National Institutes of Health, 1993.

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Osborn, Henry Fairfield. Evolution of mammalian molar teeth. Nabu Press, 2010.

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Dobbin, Kathleen. Preparing for third molar removal. Clinical Center Communications, National Institutes of Health, 1988.

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Dobbin, Kathleen. Preparing for third molar removal. Clinical Center Communications, National Institutes of Health, 1989.

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Book chapters on the topic "Molar"

1

Hangay, George, Susan V. Gruner, F. W. Howard, et al. "Molar." In Encyclopedia of Entomology. Springer Netherlands, 2008. http://dx.doi.org/10.1007/978-1-4020-6359-6_4655.

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Koch, Göran. "MIH: An Introduction." In Molar Incisor Hypomineralization. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-31601-3_1.

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Papageorgiou, Spyridon N., and Hubertus van Waes. "Prophylaxis and Desensitizing of MIH Teeth." In Molar Incisor Hypomineralization. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-31601-3_10.

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Lygidakis, Nick N., Konstantina Chatzidimitriou, and Nick A. Lygidakis. "The Use of Fissure Sealants in MIH-Affected Posterior Teeth." In Molar Incisor Hypomineralization. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-31601-3_11.

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Krämer, Norbert, and Roland Frankenberger. "Direct Restorations of MIH-Affected Teeth." In Molar Incisor Hypomineralization. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-31601-3_12.

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Bekes, Katrin. "Indirect Restoration Approaches for MIH-Affected Teeth." In Molar Incisor Hypomineralization. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-31601-3_13.

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Tam, Clarence P., and David J. Manton. "Aesthetic Management of Molar Incisor Hypomineralization: Staged Strategies for Affected Incisors." In Molar Incisor Hypomineralization. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-31601-3_14.

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Kirschneck, Christian, and Peter Proff. "Extraction of MIH-Affected Molars and Orthodontic Space Closure." In Molar Incisor Hypomineralization. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-31601-3_15.

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Schwendicke, Falk, and Karim Elhennawy. "Health Economic Evaluation of Management Strategies for MIH." In Molar Incisor Hypomineralization. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-31601-3_16.

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Elhennawy, Karim, Katrin Bekes, Anton Dobsak, Stefan Tangl, Hassan Shokoohi-Tabrizi, and Falk Schwendicke. "Structural, Mechanical, and Chemical Evaluation of Molar Incisor Hypomineralization-Affected Enamel." In Molar Incisor Hypomineralization. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-31601-3_2.

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Conference papers on the topic "Molar"

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Bitzcof, Bruna Tifani. "Gestação molar em primigesta evoluindo com mola invasora." In 46º Congresso da SGORJ e Trocando Ideias XXV. Zeppelini Editorial e Comunicação, 2022. http://dx.doi.org/10.5327/jbg-0368-1416-2022132s1071.

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Introdução: A doença trofoblástica gestacional (DTG) caracteriza-se pela proliferação do epitélio trofoblástico placentário. A manifestação benigna da DTG pode ser representada pela mola hidatiforme parcial (MHP), um tumor com parte de tecido fetal, que pode, em 20% dos casos, evoluir para uma neoplasia trofoblástica gestacional (NTG). Entre as neoplasias, destaca-se a mola invasora, uma evolução da MHP, a qual acomete apenas 1% dos casos, indicada pela persistência do hormônio gonadotrofina coriônica humana (hCG) após esvaziamento uterino, demonstrando a possibilidade de uma invasão da parede uterina. Dessa forma, considerando-se a necessidade de identificar manifestações da DTG, o presente estudo aborda um caso incomum de evolução da MHP para mola invasora. Relato de caso: Mulher, 21 anos, hígida, com exame de β-HCG qualitativo positivo. Primigesta. Queixa-se de sangramento vaginal vermelho escuro em pequena quantidade há dois dias. Nega dor. Por meio de exame especular observou-se a presença de sangramento ativo em pequena quantidade pelo orifício externo do colo uterino. Solicitou-se ultrassonografia transvaginal (USG TV), a qual mostrou um material heterogêneo de aspecto multicístico na região do fundo do corpo uterino. Exame de β-HCG igual a 20.443 mUI/mL. Foi indicado esvaziamento uterino por aspiração manual intrauterina (AMIU) e encaminhamento à patologia. Após 48 horas, o exame do β-HCG quantitativo resultou em 2.562 mUI/mL. O anatomopatológico concluiu mola hidatiforme parcial (MHP). Após acompanhamento semanal do β-HCG, verificou-se uma ascensão dos valores. Foram iniciados investigação e estadiamento com exames de imagem, laboratoriais. A RNM de pelve exibiu espaçamento da cavidade endometrial no fundo uterino, formação nodular estendendo-se até a superfície serosa do útero e cistos tecaluteínicos nos ovários. Diagnosticou-se mola invasora com estadiamento de NTG confinada ao útero, estágio I. O tratamento clínico iniciou-se com quatro ciclos de metotrexato (MTX) 1 mg/kg intramuscular, intercalados com ácido folínico (AF) 15 mg. O seguimento deu-se com dosagem de β-HCG quantitativo, da qual o nível de 676,5 mUI/mL após a última aplicação de MTX decaiu para 132 mUI/mL em sete dias, seguindo semanalmente até negativar, além de se obter a regressão da lesão. Conclusão: Entende-se que a evolução da MHP para mola invasora é atípica. O seguimento até a negativação do β-HCG é indispensável para confirmar a cura. Logo, um aumento do hCG, mesmo após AMIU, caracteriza uma evolução para NTG. Neste caso a mola invasora foi confinada ao útero, sendo possível descartar coriocarcinoma. O tratamento constituído de MTX alternando com AF foi imprescindível para manter a fertilidade da paciente, já que o MTX inibe o metabolismo do folato. O acompanhamento regular de hCG assegurou o sucesso no tratamento.
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Saji, Pooja. "Unraveling Molar Pregnancy." In Radiopaedia 2024 Virtual Conference. Radiopaedia.org, 2024. http://dx.doi.org/10.53347/rposter-2451.

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Martins, Silvia Milena, Antonio Fabricio Alves Ferreira, Ryllyanne Lilian Soares de Vasconcelos, Isianne Kelly Moura Cerqueira, and Lígia Moreno de Moura. "HIPOMINERALIZAÇÃO MOLAR INCISIVO (HMI)." In Jornada Acadêmica Internacional de Odontologia do ITPAC Palmas. Even3, 2021. http://dx.doi.org/10.29327/143808.2-2.

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Alqahtani, Fahd Mohamad, and Curtis Hays Whitson. "Molar Distributions of Equilibrium Systems." In SPE Europec featured at 80th EAGE Conference and Exhibition. Society of Petroleum Engineers, 2018. http://dx.doi.org/10.2118/190797-ms.

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Padrón, Lilian, Gabriela Paiva, Marcio Barcellos, Joffre Amim Junior, Jorge Fonte de Rezende Filho, and Antonio Braga. "Vídeo-histeroscopia no diagnóstico da gestação molar: mola hidatiforme parcial em idade gestacional precoce." In 45º Congresso da SGORJ XXIV Trocando Ideias. Zeppelini Editorial e Comunicação, 2021. http://dx.doi.org/10.5327/jbg-0368-1416-20211311218.

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Introdução: A mola hidatiforme (MH) é caracterizada por fertilização anormal e pode resultar em duas síndromes clínico-patológicas distintas: mola hidatiforme completa (MHC) ou mola hidatiforme parcial (MHP). A MHP ocorre quando um oócito haploide (23X) é fertilizado por dois espermatozoides, resultando em uma triploidia diândrica. O embrião/feto apresenta desenvolvimento anormal, com múltiplas malformações e restrição de crescimento intrauterino. A MHP apresenta sintomatologia que se confunde com o abortamento incompleto ou retido, estando o sangramento transvaginal presente em cerca de 50% dos casos. O diagnóstico é comumente feito por ultrassonografia transvaginal e dosagem sérica de gonadotrofina coriônica humana (hCG); porém, em situações especiais, a histeroscopia poderá auxiliar na diferenciação diagnóstica. Relato de caso: Estudo aprovado pelo Comitê de Ética em Pesquisa da Universidade Federal do Rio de Janeiro (UFRJ) (Certificado de Apresentação para Apreciação Ética — CAAE: 35790620.4.0000.5275). Paciente com 18 anos, IIG IP, foi submetida à histeroscopia para avaliação da cavidade endometrial por aborto retido com sete semanas de gestação. A histeroscopia foi indicada porquanto, na vigência da conduta conservadora de aborto retido, observou-se elevação do nível de hCG, que passou de 25.000 para 58.000 UI/L em quatro semanas. À avaliação histeroscópica, o embrião, o cordão umbilical e o saco gestacional onde o embrião estava confinado foram facilmente visualizados, não deixando dúvidas sobre a presença das estruturas extraembrionárias. Contudo, observou-se aparente anomalia esquelética em membros inferiores, sugestiva de triploidia (posteriormente confirmada pela avaliação do cariótipo). Avançando o histeroscópio em direção ao córion frondoso, foi possível a visualização de múltiplas vesículas hidatiformes, de diminuto diâmetro, sugestivas de MH. A paciente foi então submetida a esvaziamento uterino por vácuo-aspiração, e o material foi enviado para patologia. Após análise histopatológica/ imuno-histoquímica/ citogenética, confirmou-se o diagnóstico de MHP e a causa da morte embrionária, mercê de sua triploidia. Conclusão: Pacientes com MHP e idade gestacional precoce são tipicamente assintomáticas, o que dificulta o diagnóstico, muitas vezes confundido com aborto retido. O monitoramento cuidadoso dos níveis de hCG nas pacientes submetidas à conduta expectante para o aborto retido é importante para excluir caso de MHP, pois o aumento dos níveis séricos de hCG vão sugerir a ocorrência de MH. Neste caso, embora a ultrassonografia não tenha sido altamente suspeita para gravidez molar, a histeroscopia mostrou a presença de vesículas hidatiformes e orientou a estratégia cirúrgica para o esvaziamento uterino por vácuo-aspiração. A gravidez molar pode ser um achado durante a vídeo-histeroscopia. Conhecer sua morfologia vídeo-histeroscópica é útil para o correto diagnóstico e manejo dessa situação clínica incomum.
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Moura, Rebeca Gomes Barreto de, Anna Carolina Barreto Willemam, Gabriele Maria Viana Martins, Maria Luiza de Abreu Paes, and Pedro Cardoso Siqueira Albernaz. "GRAVIDEZ MOLAR E COMPLICAÇÕES CLÍNICAS ASSOCIADAS." In IV Congresso Online Brasileiro de Atualização Médica. Congresse.me, 2023. http://dx.doi.org/10.54265/ffqt2243.

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Padrón, Lilian, Gabriela Paiva, Marcio Barcellos, Joffre Amim Junior, Jorge Fonte de Rezende Filho, and Antonio Braga. "Vídeo-histeroscopia no diagnóstico da gestação molar: mola hidatiforme completa com gonadotrofina coriônica humana normal." In 45º Congresso da SGORJ XXIV Trocando Ideias. Zeppelini Editorial e Comunicação, 2021. http://dx.doi.org/10.5327/jbg-0368-1416-20211311217.

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Introdução: A mola hidatiforme (MH) é a forma clínica mais comum da doença trofoblástica gestacional e apresenta duas formas clínico-histopatológicas distintas: mola hidatiforme parcial (MHP) ou mola hidatiforme completa (MHC). A MHC caracteriza-se por hidropsia difusa e hiperplasia trofoblástica da superfície da vilosidade coriônica. Na maioria das vezes ocorre fertilização do oócito desprovido de material genético por um espermatozoide haploide (23X ou 23Y) que duplica seus cromossomos, resultando em diploidia androgenética. O diagnóstico da MHC é comumente feito pela ultrassonografia transvaginal e dosagem sérica de gonadotrofina coriônica humana (hCG). Relato de caso: Estudo aprovado pelo Comitê de Ética em Pesquisa da Universidade Federal do Rio de Janeiro (UFRJ) (Certificado de Apresentação para Apreciação Ética — CAAE: 35790620.4.0000.5275). Paciente de 50 anos, IIG IP, com sangramento uterino anormal, realizou ultrassonografia transvaginal que mostrou cavidade uterina com conteúdo heterogêneo em seu interior. Dosagem sérica de hCG normal. Indicou-se histeroscopia diagnóstica, que visualizou cavidade uterina aumentada de tamanho, com coágulos em seu interior, e endométrio de aspecto decidualizado. Em parede lateral direita, presença de formação ovalada de coloração arroxeada com cerca de 2 cm. Ausência de material trofoblástico livre em cavidade uterina. À medida que o histeroscópio avançou pela fina parede dessa estrutura ovalada, foi observado abundante conteúdo, formado de múltiplas vesículas hidatiformes, alongadas e translúcidas e ausência de estruturas embrionárias, sugerindo MHC. Com base nos achados histeroscópicos, a paciente foi submetida a aspiração a vácuo para remoção do tecido molar. Após o esvaziamento uterino, nova avaliação histeroscópica foi realizada para garantir a completa remoção do tecido trofoblástico e evitar o risco de 15% de retenção desse tecido, causando mais sangramento e a necessidade de aspiração uterina adicional durante o acompanhamento pós-molar. Diante da suspeita clínica de MHC, realizou-se nova dosagem de hCG, com diluição da amostra sérica, com resultado de 2.240.000 UI/L — o resultado anterior normal deveu-se ao efeito Hook. O diagnóstico histopatológico/imuno-histoquímico confirmou MHC e a paciente foi encaminhada para seguimento pós-molar. Conclusão: A MH pode ser um achado incidental durante a histeroscopia para sangramento uterino anormal, principalmente nos extremos da vida reprodutiva. O conhecimento de sua morfologia durante a histeroscopia auxilia no diagnóstico e correto tratamento dessa situação clínica incomum. Neste caso, foi possível avaliar a MHC, ainda intacta, em útero não previamente manipulado. A histeroscopia, como ferramenta diagnóstica auxiliar, pode trazer benefício significativo em cenários clínicos desafiadores e diagnósticos como a MH, que devem ser prontamente reconhecidos pelo histeroscopista.
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Zhang, Dongxia, Yangzhou Gan, Zeyang Xia, et al. "Molar axis estimation from computed tomography images." In 2016 38th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC). IEEE, 2016. http://dx.doi.org/10.1109/embc.2016.7590883.

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Poli, Juliana Gomes, Samia Insaurriaga Jundi, Cassia Juliana Cattai, et al. "Neoplasia trofoblástica gestacional após gravidez molar tubária." In 47º Congresso da SGORJ e Trocando Ideias XXVI. Zeppelini Editorial e Comunicação, 2023. http://dx.doi.org/10.5327/jbg-2965-3711-2023133s1094.

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Introdução: A doença trofoblástica gestacional (DTG) é uma anomalia da gravidez que inclui formas benignas, como a mola hidatiforme completa e parcial, e formas malignas, como a mola invasora, o coriocarcinoma, o tumor trofoblástico do sítio placentário e o tumor trofoblástico epitelioide, agrupadas sob o termo neoplasia trofoblástica gestacional (NTG). Embora metade dos casos de NTG seja decorrente de gravidez molar intrauterina, qualquer gestação pode evoluir para esse quadro. Neste relato, apresentamos um caso raro de NTG após gestação molar ectópica tubária. Relato de caso: A paciente, G.P.S.B., 35 anos, gravidez pós-término IXG VIP IIA, foi admitida em uma maternidade em Niterói (RJ) em novembro de 2021, com dor abdominal aguda. Após diagnóstico de gravidez ectópica rompida, a paciente foi submetida a laparotomia exploratória com remoção da tuba uterina esquerda. O pós-operatório transcorreu sem intercorrências, e a paciente recebeu alta hospitalar dois dias após a cirurgia. Em janeiro de 2022, a paciente apresentou dor abdominal intensa, astenia, vômitos e sangramento retal e vaginal. Ao exame físico, observou-se uma grande massa pélvica, dura ao toque, que se estendia além da cicatriz umbilical, com contornos mal definidos. Devido à dosagem positiva de gonadotrofina coriônica humana (hCG), suspeitou-se de NTG, e a paciente foi transferida para um Centro de Referência em DTG de um hospital quaternário. A dosagem de hCG foi de 1.125.000 UI/L, e a ressonância nuclear magnética (RNM) revelou útero aumentado com massa sólido-cística heterogênea que se estendia até o mesogastro, medindo 19 × 17 × 9,3 cm e envolvendo o reto e o sigmoide. O diagnóstico de NTG foi confirmado. A revisão da lâmina proveniente da tuba uterina esquerda revelou uma mola hidatiforme parcial (positiva para imuno-histoquímica p52kip2). A paciente iniciou quimioterapia de indução com baixa dose de etoposídeo-cisplatina (EP), devido ao estágio avançado da doença e ao comprometimento clínico grave. Após o primeiro ciclo de quimioterapia, a paciente apresentou sangramento vaginal e retal maciço, além de síndrome do desconforto respiratório agudo devido ao hipertireoidismo, e foi encaminhada para a Unidade de Terapia Intensiva, onde recebeu tratamento com hemotransfusão, beta-bloqueadores, drogas antitireoidianas e ventilação não invasiva. Após estabilização clínica, mais dois ciclos de quimioterapia com EP foram administrados, com posterior mudança para o regime EMA/CO (etoposídeo, metotrexato, actinomicina-D, ciclofosfamida e vincristina), resultando em remissão após nove ciclos. Após a conclusão da quimioterapia, o exame físico demonstrou o desaparecimento da massa abdominal, e RNM de acompanhamento mostrou apenas tecido cicatricial no local prévio do tumor. Atualmente, a paciente está em remissão e segue em acompanhamento rigoroso do nível de hCG em regime ambulatorial. Comentários: Apesar de ser raro, é importante ressaltar a importância do estudo anatomopatológico nos casos de gravidez ectópica, a fim de diagnosticar precocemente a DTG extrauterina. A NTG deve sempre ser considerada como causa potencialmente curável de tumores pélvicos volumosos em mulheres em idade reprodutiva.
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Dutta, Abhijit, and Himadri Chattopadhyay. "Entropy Generation in the Human Molar Tooth." In Proceedings of the 27th National and 5th International ISHMT-ASTFE Heat and Mass Transfer Conference December 14-17, 2023, IIT Patna, Patna-801106, Bihar, India. Begellhouse, 2024. http://dx.doi.org/10.1615/ihmtc-2023.560.

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Reports on the topic "Molar"

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Canellas, Joao Vitor, Fabio Ritto, and Paul Tiwana. Comparative efficacy and safety of pharmacological interventions to reduce inflammatory complications after mandibular third molar surgery: a systematic review and network meta-analysis protocol. INPLASY - International Platform of Registered Systematic Review and Meta-analysis Protocols, 2021. http://dx.doi.org/10.37766/inplasy2021.7.0069.

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Review question / Objective: This systematic review aims to compare the effects of different drugs to reduce postoperative inflammatory complications (pain, edema, and trismus) after mandibular third molar surgery by applying a frequentist network meta-analysis approach. To this end, the proposed study will answer the following questions: 1) Among diverse drugs currently available, which postoperative pharmacological regimen is the most efficient to reduce pain after mandibular third molar surgery? 2) Is the pre-emptive analgesia effective in reducing pain immediately after the mandibular third molar surgery? In this case, 3) Which preoperative pharmacological regimen is the most efficient? 4) Among diverse corticosteroids currently available, what is the best option to control the edema induced by the surgery? 5) What is the optimal dose and route of administration of corticosteroids prior to mandibular third molar surgery to control the pain/ edema induced by the surgery? Condition being studied: Inflammatory complications after mandibular third molar surgery (Pain, edema, and trismus).
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Canellas, Joao Vitor, Fabio Ritto, and Paul Tiwana. Comparative efficacy and safety of different corticosteroids to reduce inflammatory complications after mandibular third molar surgery: a systematic review and network meta-analysis protocol. INPLASY - International Platform of Registered Systematic Review and Meta-analysis Protocols, 2021. http://dx.doi.org/10.37766/inplasy2021.9.0023.

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Review question / Objective: This systematic review aims to compare the effects of different corticosteroids to reduce postoperative inflammatory complications (pain, edema, and trismus) after mandibular third molar surgery by applying a frequentist network meta-analysis approach. To this end, the proposed study will answer the following questions: 1) Among diverse corticosteroids currently available, what is the best preoperative option to control postoperative inflammatory complications? 2) What is the optimal dose and route of administration of corticosteroids prior to mandibular third molar surgery to control the pain, edema, and trismus induced by the surgery? Condition being studied: Inflammatory complications after mandibular third molar surgery (Pain, edema, and trismus).
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Nash, C., M. Williams, M. Restivo, L. Hamm, and D. McCabe. SuperLig® 639 Resin Performance using 8 Molar LAW Feed. Office of Scientific and Technical Information (OSTI), 2016. http://dx.doi.org/10.2172/1332668.

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Yang, Chen-Jen, and Samson A. Jenekhe. Group Contribution to Molar Refraction and Refractive Index of Conjugated Polymers. Defense Technical Information Center, 1996. http://dx.doi.org/10.21236/ada314812.

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Mueller, Frank. MOLAR: Modular Linux and Adaptive Runtime Support for HEC OS/R Research. Office of Scientific and Technical Information (OSTI), 2009. http://dx.doi.org/10.2172/947024.

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Author, Not Given. Integrated System Dramatically Improves Hydrogen Molar Yield from Biomass via Fermentation (Fact Sheet). Office of Scientific and Technical Information (OSTI), 2010. http://dx.doi.org/10.2172/993334.

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Ritto, Fernanda, Karen Tiwana, Zachary Dacus, Troy Schmitz, and João Vitor Canellas. Approaching different stages of the disease and the correlated treatment on Molar Incisor Hypomineralization (MIH): a systematic review and meta-analysis. INPLASY - International Platform of Registered Systematic Review and Meta-analysis Protocols, 2022. http://dx.doi.org/10.37766/inplasy2022.3.0127.

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Review question / Objective: This systematic review aims to define and evaluate the treatments available for two different stages of the Molar Incisor Hypomineralization (MIH) defect. On stage I, the lesion is classified as Mild and is characterized by demarcated opacities without posteruptive breakdown. On stage II, the lesion is classified as Severe and is characterized by posteruptive breakdown of enamel. To this end, the proposed study will answer the following question: What are the treatments available and their results for the two different stages of MIH on permanent teeth? Condition being studied: Mild and Severe Molar Incisor Hypomineralization (MIH). MIH is an enamel defect that occurs during the mineralization on the second stage of the formation of the enamel called maturation phase. This disease affects the outer layer of enamel, making the structure soft and undercalcified. The appearance of the lesion can be white opaque to yellow brown depending on the stage ( mild or severe).
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Glushko, E. Ya, and A. N. Stepanyuk. New perspectives to improve accuracy of the molar gas constant using pneumatic photonic structures. [б. в.], 2018. http://dx.doi.org/10.31812/123456789/2873.

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In this work, a method is proposed to determine the molar constant R with the relative standard uncertainty near 10^-10 that is based on an extra accurate volume controlling and high sensitive pressure measurements in the framework of scale echeloning procedure. An essential moment of the method is uniting of results for two measurement scales with increased relative standard uncertainty (10^-5) to obtain the higher precise level. The gas-filled 1D elastic pneumatic photonic crystal is proposed as an optical indicator of pressure which can unite several pressure scales of magnitude.
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Assiri, Hassan, Mohammad Shaul Hameed, Abdullah Alqarni, Ali Azhar Dawasaz, Saeed Abdullah Arem, and Khalil Assiri. Artificial intelligence application in case of mandibular third molar impaction: Systematic review of literature. INPLASY - International Platform of Registered Systematic Review and Meta-analysis Protocols, 2024. http://dx.doi.org/10.37766/inplasy2024.6.0081.

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Panek. PR-312-12208-R01 Plume Volume Molar Ratio Method Assumptions and Conservative Model Over-Predictions. Pipeline Research Council International, Inc. (PRCI), 2013. http://dx.doi.org/10.55274/r0010806.

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With the introduction of the more stringent short-term 1-hour air quality NO2 standard, the use of redundant, overly conservative assumptions (e.g. use of permit allowable emissions � hourly rate based on maximum annual tons per year) is no longer appropriate and potentially misinforms and obfuscates modeling compliance demonstrations. One of the challenges of modeling oxides of nitrogen (NOx) emissions is determining the amount of total NOx that will exist in the form of nitrogen dioxide (NO2) at a receptor. Combustion source emissions usually contain mostly nitric oxide (NO), which is not a regulated criteria pollutant. The Plume Volume Molar Ratio Method (PVMRM) is a higher fidelity �Tier 3� model option contained within the USEPA AERMOD dispersion model for the purpose of reducing the inherent conservatism associated with predicting the NO2 fraction within a plume. Tier 3 approaches must be approved on a case-by-case basis by the regulatory agency prior to approval. The American Petroleum Association (API), Council of Industrial Boiler Owners (CIBO), Electric Power Research Institute (EPRI), AF and PA (American Forest and Paper Association) and other trade associations and stakeholders have undertaken initial investigatory efforts into the Plume Volume Molar Ratio Method (PVMRM) algorithm and model chemistry formulation. The initial results of this work were presented at the EPA 10th Modeling Conference on March 13th through 15th, 2012. Section 320 of the Clean Air Act (CAA) requires a conference to be held every 3 years. The purpose of the conference is to provide an overview of the latest features of the agency�s preferred air quality models and to provide a forum for public review and comment on how the agency determines and applies air quality models in the future. This report provides a technical description of the current state of the Plume Volume Molar Ratio Method (PVMRM) currently used by EPA in the AERMOD model and the Air Quality Modeling Guidance contained in Appendix W. This paper examines the conservative assumptions used by EPA that lead to conservative model over-predictions, work that was recently presented at the 10th Modeling Conference on PVMRM, and gaps and shortcomings for existing reciprocating compressors. This report also summarizes the initial findings from these efforts and identifies potential gaps (e.g. shorter stacks and lower in-stack NO/NO2 ratios) in the analysis as it may relate to existing reciprocating engine drivers.
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