Relevant bibliographies by topics / Cephalograms / Journal articles
To see the other types of publications on this topic, follow the link: Cephalograms.

Journal articles on the topic 'Cephalograms'

Author: Grafiati
Published: 4 June 2021
Last updated: 17 February 2022

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 journal articles for your research on the topic 'Cephalograms.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

Hwang, Sel-Ae, Jae-Seo Lee, Hyeon-Shik Hwang, and Kyung-Min Lee. "Benefits of lateral cephalogram during landmark identification on posteroanterior cephalograms." Korean Journal of Orthodontics 49, no. 1 (2019): 32. http://dx.doi.org/10.4041/kjod.2019.49.1.32.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Shrestha, Vikash Veer, Ansu Piya, Anju Khapung, and Prakash Bhattarai. "Comparison of Accuracy of Gonial Angle of Orthopantomogram and Lateral Cephalogram for Mandibular Measurements among Orthodontic Patients Attending Tertiary Care Dental Hospital in Kathmandu." Orthodontic Journal of Nepal 10, no. 3 (December 31, 2020): 57–61. http://dx.doi.org/10.3126/ojn.v10i3.35497.

Full text
Abstract:
Introduction: Gonial angle is an important parameter of the craniofacial complex which is generally used to evaluate the vertical parameters and symmetry of the facial skeleton. Gonial angle can be measured in both orthopantomogram (OPG) and lateral cephalograms. Due to the superimpositions seen while measuring the bilateral strucuture on lateral cephalograms, reliable measurement of the gonial angle becomes difficult. This study is done to clarify the possible application of orthopantomogram (OPG) for evaluating angular measurement of the mandible specifically gonial angle by comparing with lateral cephalogram. Materials and Method: All the patients (104) being treated from January 2018 to August 2020 in department of Orthodontics in Nepal Medical College were included in the study. Gonial angle measurements were made on lateral cephalograms and orthopantomograms of 104 patients – 54 males and 50 females with mean age of 22.20 ± 3.25 years. Patients aged 15-35 years were included in the study. Data was processed in SPSS version 16.0. Result: Mean Gonial angle in lateral cephalogram was greater than mean gonial angle in OPG and this difference was found to be statistically significant (p-value < 0.05). The difference in mean gonial angle was found to be statistically significant when compared between right gonial angle in OPG and gonial angle in lateral cephalogram (p-value < 0.05) and also between left gonial angle in OPG and gonial angle in lateral cephalogram (p-value < 0.05). Conclusion: When gonial angle values obtained from both sides of OPG were compared, no statistically significant difference was found. Significant differences were found when gonial angle values obtained from OPG right and left sides were compared with that of lateral cephalogram.
APA, Harvard, Vancouver, ISO, and other styles
3

Ongkosuwito, E. M., M. M. J. Dieleman, A. M. Kuijpers-Jagtman, P. G. H. Mulder, and J. W. van Neck. "Linear Mandibular Measurements: Comparison between Orthopantomograms and Lateral Cephalograms." Cleft Palate-Craniofacial Journal 46, no. 2 (March 2009): 147–53. http://dx.doi.org/10.1597/07-123.1.

Full text
Abstract:
Objective: To investigate the reliability of length measurements of the mandible by comparing orthopantomograms (OPTs) with lateral cephalograms. Design: Observational study. Setting: OPTs and lateral cephalograms were taken of 20 human dry skulls. Four orthodontists and four maxillofacial surgeons located landmarks on all radiographs using a computer program for cephalometric measurements. Intraobserver and interobserver variability in locating landmarks was assessed, as well as positioning of the skulls prior to radiography between the x-ray assistants. Magnification differences between the left and right side of the mandible on the OPT were determined for five skulls. Kappa statistics were used to calculate the intraclass correlation coefficient for intraobserver and interobserver differences. An F test was used to assess differences between methods and between type of observer. Results: No significant differences were found in the magnification factor of the left and right side of the mandible. Compared with a lateral cephalogram, the OPT had comparable reliability in measuring mandibular distances condylion-gonion, gonion-menton, and condylion-menton. No significant differences were observed between the x-ray assistants in taking the OPTs and lateral cephalograms or in repositioning the skulls. Significant differences were found between orthodontists and maxillofacial surgeons for landmark measurements. Conclusion: An OPT is as reliable as a lateral cephalogram for linear measurements of the mandible (condylion-gonion, gonion-menton, and condylion-menton).
APA, Harvard, Vancouver, ISO, and other styles
4

Collins, Jill, Anwar Shah, Caroline McCarthy, and Jonathan Sandler. "Comparison of measurements from photographed lateral cephalograms and scanned cephalograms." American Journal of Orthodontics and Dentofacial Orthopedics 132, no. 6 (December 2007): 830–33. http://dx.doi.org/10.1016/j.ajodo.2007.07.008.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Milutinovic, Jovana, Nenad Nedeljkovic, and Predrag Nikolic. "Comparative analysis of standard and computerized profile cephalometric diagnostics in orthodontics." Serbian Dental Journal 53, no. 4 (2006): 246–52. http://dx.doi.org/10.2298/sgs0604246m.

Full text
Abstract:
Aim: The aim of this research was to compare the standard and computerized method of cephalogram analysis. In this research 32 patients visiting Belgrade University School of Dentistry, dept. of orthodontics were involved. Material and Method: This research was based on cephalogram analysis for every patient. All of the cephalograms were analyzed in two ways: 1. standrad method and 2. computerized method using Nemotec Dental Studio NX 2005 software. Results: Additional possibilities and properties of computer software for the computerized cephalogram analysis caused the differences in results. Conclusion: Based on the results, it can be concluded that there was no statistical difference comparing both methods. Computerized cephalogram analysis provides higher speed and software possibilities compared to standard method.
APA, Harvard, Vancouver, ISO, and other styles
6

Bhullar, Mandeep K., Priyanka Chaudhary, Sanjay Mittal, Isha Aggarwal, Merry Goyal, and Tanzin Palkit. "To Determine the Anteroposterior Position of Incisors in Relation to Points A and B on Cephalogram and Study Models in North Indian Population." Dental Journal of Advance Studies 8, no. 02 (April 28, 2020): 40–43. http://dx.doi.org/10.1055/s-0040-1710197.

Full text
Abstract:
Abstract Introduction This study aimed to determine the upper and lower incisors to points A and B on lateral cephalogram and study model in North Indian population. This article evaluated the present relationship of upper and lower incisors position to point A and B on the cephalogram and studied the model as a diagnostic tool for orthodontic treatment planning. Materials and Methods The study included 32 patients, aged 15 to 25 years. The sample was divided into two groups as group I (n = 32, cephalometric analysis) and group II (n = 32, study model analysis) of the same patient. In group I incisors position was related to points A and B on the cephalograms and in group II incisors position was related to points A and B on study model by using transparent grid. Results As per Indian norms, outcome mean value for cephalometric norms was 6.3 and 3.2 mm and for study model norms was 4 and 1.3 mm. Statistically significant differences (p < 0.002) were observed for mandibular incisor position on cephalograms and for maxillary incisors (p < 0.001) on study casts when compared with Chile sample norm. Conclusion The anteroposterior position of upper and lower incisors in relation to points A and B on cephalogram and casts has been determined in North Indian patients.
APA, Harvard, Vancouver, ISO, and other styles
7

Jacobson, Alex. "Characteristics of digital cephalograms and film/screen cephalograms: a comparative study." American Journal of Orthodontics and Dentofacial Orthopedics 122, no. 1 (July 2002): 119. http://dx.doi.org/10.1067/mod.2002.125961.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Moon, Soyeon, Daewoo Lee, Jaegon Kim, and Yeonmi Yang. "Assessment of Predicting Factors for Pediatric Sleep Disordered Breathing." JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY 47, no. 4 (November 30, 2020): 377–88. http://dx.doi.org/10.5933/jkapd.2020.47.4.377.

Full text
Abstract:
The aim of this study was to evaluate the association between various predicting tools and Apnea-Hypopnea Index (AHI) to identify children with sleep disordered breathing (SDB). From 5 to 10 years old who came for orthodontic counseling, 61 children, whom had lateral cephalograms, pediatric sleep questionnaire (PSQ) records, and portable sleep monitoring results, were included in this study. A total of 17 measurements (11 distances and 6 angles) were made on lateral cephalograms. The measurements of lateral cephalograms, PSQ scales and portable sleep monitoring results were statistically analyzed. 49 of 61 (80%) patients showed AHI > 1, which suspected to have SDB and their mean AHI was 2.75. In this study, adenoid size (A/N ratio), position of the hyoid bone from mandibular plane, gonial angle, and PSQ scale were related to a higher risk of pediatric SDB. Also, oxygen desaturation index (ODI) and snoring time from sleep monitoring results were statistically significant in children with SDB using Mann-Whitney test (<i>p</i> ＜ 0.05).<br/>In conclusion, evaluation of hyoid bone position, adenoidal hypertrophy, gonial angle in lateral cephalogram, and PSQ scale was important to screen out potential SDB, especially in children with frequent snoring.
APA, Harvard, Vancouver, ISO, and other styles
9

Soni, Priyavrat, Vineet Sharma, and Jaideep Sengupta. "Cervical Vertebrae Anomalies—Incidental Findings on Lateral Cephalograms." Angle Orthodontist 78, no. 1 (January 1, 2008): 176–80. http://dx.doi.org/10.2319/091306-370.1.

Full text
Abstract:
Abstract Three cases of abnormal incidental findings on lateral cephalogram are presented. These patients reported for orthodontic consultation in their adolescence. While studying the patients' cephalograms, abnormal radiographic findings were discovered in their cervical vertebrae. Because the patients were asymptomatic, early diagnosis based on these radiographic findings made the patients aware of the situations. Lifestyle changes were instituted with specialist consultation in two patients to prevent or delay the onset of symptoms of an underlying pathology. Patients were educated about the likely future course of these findings. Specialist follow-up was advised to all the patients.
APA, Harvard, Vancouver, ISO, and other styles
10

Parthasarathy, S., S. T. Nugent, P. G. Gregson, and D. F. Fay. "Automatic landmarking of cephalograms." Computers and Biomedical Research 22, no. 3 (June 1989): 248–69. http://dx.doi.org/10.1016/0010-4809(89)90005-0.

Full text
APA, Harvard, Vancouver, ISO, and other styles
11

Yang, S., D. G. Liu, and Y. Gu. "Comparison of linear measurements between CBCT orthogonally synthesized cephalograms and conventional cephalograms." Dentomaxillofacial Radiology 43, no. 7 (October 2014): 20140024. http://dx.doi.org/10.1259/dmfr.20140024.

Full text
APA, Harvard, Vancouver, ISO, and other styles
12

Kragskov, Jens, Carles Bosch, Carsten Gyldensted, and Steen Sindet-Pedersen. "Comparison of the Reliability of Craniofacial Anatomic Landmarks Based on Cephalometric Radiographs and Three-Dimensional CT Scans." Cleft Palate-Craniofacial Journal 34, no. 2 (March 1997): 111–16. http://dx.doi.org/10.1597/1545-1569_1997_034_0111_cotroc_2.3.co_2.

Full text
Abstract:
Objective Conventional cephalometry is an inexpensive and well-established method for evaluating patients with dentofacial deformities. However, patients with major deformities, and in particular asymmetric cases are difficult to evaluate by conventional cephalometry. Both two- and three-dimensional computed tomography (CT) have been proposed to alleviate some of these difficulties. Only a few studies using metallic markers have indicated 3-D CT to be a useful diagnostic method, whereas no studies have evaluated the reliability of the anatomic cephalometric points used in 3-D CT. The aim of our study therefore was to compare the reliability of anatomic cephalometric points from conventional cephalograms and 3-D CT. Methods Nine human dry skulls were CT scanned. In addition standard lateral and frontal cephalograms were obtained. The CT scans were 3-D image reconstructed, and the cephalometric points were recorded as x, y, and z co-ordinates by two investigators. Computerized cephalometrics were performed on the lateral and frontal cephalograms. Intra- and interindividual variations were calculated for each method and tested for statistical significance. Results Lateral cephalogram measures were more reliable than 3-D CT, with interobserver variations less than 1 mm for most points compared to about 2 mm for 3-D CT. Lateral cephalometrics also showed significantly less interobserver variation for six variables. This was, however, less obvious when 3-D CT was compared to frontal cephalograms. Frontal cephalometrics showed significantly less interobserver variation for three of the investigated variables. Conclusions For standard lateral and frontal cephalometric points, there is no evidence that 3-D CT is more reliable than the conventional cephalometric methods in normal skull, and the benefit of 3-D CT cephalometric is indicated to be in the severe asymmetric craniofacial syndrome patients, as conventional cephalometrics is known to be inferior in these cases.
APA, Harvard, Vancouver, ISO, and other styles
13

Franchi, Lorenzo, Michele Nieri, Irene Lomonaco, James A. McNamara, and Veronica Giuntini. "Predicting the mandibular growth spurt:." Angle Orthodontist 91, no. 3 (January 25, 2021): 307–12. http://dx.doi.org/10.2319/080220-676.1.

Full text
Abstract:
ABSTRACT Objectives To develop a prediction model that combined information derived from chronological age, sex, and the cervical vertebral maturation (CVM) method to predict the pubertal spurt in mandibular growth. Materials and Methods A total of 50 subjects (29 females, 21 males) were selected from the American Association of Orthodontists Foundation Craniofacial Growth Legacy Collection, the University of Michigan Growth Study, and the Denver Child Growth study. A total of 456 lateral cephalograms were analyzed, and a multilevel logistic model was applied. The outcome variable was the presence or absence of the mandibular pubertal growth peak. The predictive variables were chronological age up to the third order, sex, presence or absence of CS 3 interactions between age and sex, age and CS 3, sex and CS 3. Results The mean age ± standard deviation (SD) at the first cephalogram was 8.2 ± 0.5 years, whereas the mean age at the last cephalogram was 16.5 ± 1.1 years. The mean interval ± SD between two consecutive cephalograms was 1.0 ± 0.1 years. The mean age ± SD at the lateral cephalogram obtained immediately before the mandibular pubertal growth peak was 12.1 ± 1.1 years for females and 13.2 ± 0.8 years for males. The greatest increase in mandibular length occurred after CS 3 in 78% of the subjects. The presence of CS 3, age, second-order age, sex, and the interaction between age and sex were all statistically significant predictors of the mandibular pubertal growth spurt. Conclusions CS 3, chronological age, and sex can be used jointly to predict the pubertal peak in mandibular growth.
APA, Harvard, Vancouver, ISO, and other styles
14

Yu, H. J., S. R. Cho, M. J. Kim, W. H. Kim, J. W. Kim, and J. Choi. "Automated Skeletal Classification with Lateral Cephalometry Based on Artificial Intelligence." Journal of Dental Research 99, no. 3 (January 24, 2020): 249–56. http://dx.doi.org/10.1177/0022034520901715.

Full text
Abstract:
Lateral cephalometry has been widely used for skeletal classification in orthodontic diagnosis and treatment planning. However, this conventional system, requiring manual tracing of individual landmarks, contains possible errors of inter- and intravariability and is highly time-consuming. This study aims to provide an accurate and robust skeletal diagnostic system by incorporating a convolutional neural network (CNN) into a 1-step, end-to-end diagnostic system with lateral cephalograms. A multimodal CNN model was constructed on the basis of 5,890 lateral cephalograms and demographic data as an input. The model was optimized with transfer learning and data augmentation techniques. Diagnostic performance was evaluated with statistical analysis. The proposed system exhibited >90% sensitivity, specificity, and accuracy for vertical and sagittal skeletal diagnosis. Clinical performance of the vertical classification showed the highest accuracy at 96.40 (95% CI, 93.06 to 98.39; model III). The receiver operating characteristic curve and the area under the curve both demonstrated the excellent performance of the system, with a mean area under the curve >95%. The heat maps of cephalograms were also provided for deeper understanding of the quality of the learned model by visually representing the region of the cephalogram that is most informative in distinguishing skeletal classes. In addition, we present broad applicability of this system through subtasks. The proposed CNN-incorporated system showed potential for skeletal orthodontic diagnosis without the need for intermediary steps requiring complicated diagnostic procedures.
APA, Harvard, Vancouver, ISO, and other styles
15

Ulkur, Feyza, Fulya Ozdemir, Derya Germec-Cakan, and E. Cigdem Kaspar. "Landmark errors on posteroanterior cephalograms." American Journal of Orthodontics and Dentofacial Orthopedics 150, no. 2 (August 2016): 324–31. http://dx.doi.org/10.1016/j.ajodo.2016.01.016.

Full text
APA, Harvard, Vancouver, ISO, and other styles
16

Lévy-Mandel, A. D., A. N. Venetsanopoulos, and J. K. Tsotsos. "Knowledge-based landmarking of cephalograms." Computers and Biomedical Research 19, no. 3 (June 1986): 282–309. http://dx.doi.org/10.1016/0010-4809(86)90023-6.

Full text
APA, Harvard, Vancouver, ISO, and other styles
17

Baumrind, Sheldon, Yocheved Ben-Bassat, Edward L. Korn, Luis Alberto Bravo, and Sean Curry. "Mandibular remodeling measured on cephalograms." American Journal of Orthodontics and Dentofacial Orthopedics 102, no. 2 (August 1992): 134–42. http://dx.doi.org/10.1016/0889-5406(92)70025-6.

Full text
APA, Harvard, Vancouver, ISO, and other styles
18

Dvortsin, Dima P., Qingsong Ye, Gerard J. Pruim, Pieter U. Dijkstra, and Yijin Ren. "Reliability of the integrated radiograph-photograph method to obtain natural head position in cephalometric diagnosis." Angle Orthodontist 81, no. 5 (May 4, 2011): 889–94. http://dx.doi.org/10.2319/010411-2.1.

Full text
Abstract:
Abstract Objective: To introduce a simple and reliable method to reorient lateral radiographs to the natural head position (NHP) according to standardized photographs made at NHP. Material and Methods: The study has two parts. In the first part, 45 patients were randomly selected from a patient cohort. Photographs (at NHP) and cephalograms from each patient were taken and assessed in two sessions by two observers. The time between the first and the second session was 5 weeks. The repeatability of profile measurements on cephalograms compared with standardized photographs of the same patient was determined; in the second part, the repeatability of three superimposing protocols (ie, the soft tissue N/subnasale line [V-line], the esthetic line [E-line], and a proposed nose best fit line [N-line]) was compared for the reorientation of the cephalogram according to the photographs made at the NHP. Results: Our results showed that the integration of radiographs and photographs is an objective and reliable method to obtain NHP in lateral cephalograms. The N-line is a reproducible and stable reference line for the reorientation of radiographs to obtain NHP. Conclusion: Reorientation of radiographs according to standardized photographs made at the NHP is a reliable and objective method to standardize the radiographs at the NHP for cephalometric analysis. The N-line is a reproducible and stable reference line for the reorientation. It is preferred over the V-line or even E-line, especially when the radiographs and photographs are taken at different sessions or at different treatment stages.
APA, Harvard, Vancouver, ISO, and other styles
19

Chang, Zwei-Chieng, Fu-Chang Hu, Eddie Lai, Chung-Chen Yao, Mu-Hsiung Chen, and Yi-Jane Chen. "Landmark identification errors on cone-beam computed tomography-derived cephalograms and conventional digital cephalograms." American Journal of Orthodontics and Dentofacial Orthopedics 140, no. 6 (December 2011): e289-e297. http://dx.doi.org/10.1016/j.ajodo.2011.06.024.

Full text
APA, Harvard, Vancouver, ISO, and other styles
20

Wermker, Kai, Susanne Jung, Ulrich Joos, and Johannes Kleinheinz. "Nasopharyngeal Development in Patients with Cleft Lip and Palate: A Retrospective Case-Control Study." International Journal of Otolaryngology 2012 (2012): 1–8. http://dx.doi.org/10.1155/2012/458507.

Full text
Abstract:
Introduction. The aim of this paper was to evaluate cephalometrically the nasopharyngeal development of patients with complete unilateral cleft lip and palate. Influencing factors were evaluated and cleft to noncleft subjects were compared to each other.Material and Methods. The lateral cephalograms of 66 patients with complete cleft lip and palate were measured and compared retrospectively to the cephalograms of 123 healthy probands. Measurements were derived from a standardized analysis of 56 landmarks.Results. We observed significant differences between cleft and control group: the cleft patients showed amaxillary retroposition and a reduced maxillary length; the inclination of the maxilla was significantly more posterior and cranial; the anterior nasopharyngeal height was reduced; the nasopharyngeal growth followed a vertical tendency with reduced sagittal dimensions concerning hard and soft tissue. The velum length was reduced. In the cleft group, an accumulation of mandibular retrognathia and an anterior position of the hyoid were observed. Skeletal configuration and type of growth were predominantly vertical.Conclusions. Our data provides a fundamental radiological analysis of the nasopharyngeal development in cleft patients. It confirms the lateral cephalogram as a basic diagnostic device in the analysis of nasopharyngeal and skeletal growth in cleft patients.
APA, Harvard, Vancouver, ISO, and other styles
21

Torres, Fernando César, Marcos Shinao Yamazaki, Renata Pilli Jóias, Luiz Renato Paranhos, Sigmar de Mello Rode, Danilo Furquim Siqueira, and Acacio Fuziy. "Evaluation of the Cervical Vertebrae Maturation Index in Lateral Cephalograms Taken in Different Head Positions." Brazilian Dental Journal 24, no. 5 (October 2013): 462–66. http://dx.doi.org/10.1590/0103-6440201302233.

Full text
Abstract:
The aim of this study was to evaluate if upward or downward head inclination might interfere with determination of the growth stage, using cervical vertebrae maturation index (CVMI), in order to verify the accuracy of such diagnosis when radiographs are taken with errors. Forty-nine patients, 26 females and 23 males, aged 9 to 15 years, were submitted to 3 lateral cephalograms: normal (NHP), with 15° upward head inclination (NHP-Up), and with 15° downward head inclination (NHP-Down). Three examiners evaluated the CVMI on the 147 cephalograms. The agreement among examiners was higher in the evaluation of cephalograms taken in NHP. The weighted Kappa test revealed moderate to substantial agreement between NHP and NHP-Up and between NHP and NHP-Down. There was greater agreement between NHP-Up and NHP-Down. It may be concluded that the evaluation of the CVMI on cephalograms in NHP is different as compared with radiographs taken with inclinations. Both NHP-Up and NHP-Down exhibited greater disagreement in the interpretation among examiners, since the evaluation method was not designed for cephalograms with positioning errors.
APA, Harvard, Vancouver, ISO, and other styles
22

Cevidanes, Lucia, Ana E. F. Oliveira, Alexandre Motta, Ceib Phillips, Brandon Burke, and Donald Tyndall. "Head Orientation in CBCT-generated Cephalograms." Angle Orthodontist 79, no. 5 (September 1, 2009): 971–77. http://dx.doi.org/10.2319/090208-460.1.

Full text
Abstract:
Abstract Objective: To determine the reliability of obtaining two-dimensional cephalometric measurements using two virtual head orientations from cone-beam computed tomography (CBCT) models. Materials and Methods: CBCT scans of 12 patients (6 class II and 6 class III) were randomly selected from a pool of 159 patients. An orthodontist, a dental radiologist, and a third-year dental student independently oriented CBCT three-dimensional (3D) renderings in either visual natural head position (simulated NHP) or 3D intracranial reference planes (3D IRP). Each observer created and digitized four CBCT-generated lateral cephalograms per patient, two using simulated NHP and two using 3D IRP at intervals of at least 3 days. Mixed-effects analysis of variance was used to calculate intraclass correlation coefficients (ICCs) and to test the difference between the orientations for each measure. Results: ICC indicated good reliability both within each head orientation and between orientations. Of the 50 measurements, the reliability coefficients were ≥0.9 for 45 measurements obtained with 3D IRP orientation and 36 measurements with simulated NHP. The difference in mean values of the two orientations exceeded 2 mm or 2° for 14 (28%) of the measurements. Conclusions: The reliability of both virtual head orientations was acceptable, although the percentage of measurements with ICC &gt;0.9 was greater for 3D IRP. This may reflect the ease of using the guide planes to position the head in the 3D IRP during the simulation process.
APA, Harvard, Vancouver, ISO, and other styles
23

Baumrind, Sheldon, Yocheved Ben-Bassat, Edward L. Korn, Luis Alberto Bravo, and Sean Curry. "Mandibular remodeling measured on cephalograms: 2." American Journal of Orthodontics and Dentofacial Orthopedics 102, no. 3 (September 1992): 227–38. http://dx.doi.org/10.1016/s0889-5406(05)81057-1.

Full text
APA, Harvard, Vancouver, ISO, and other styles
24

Wu, M. C., K. S. Cheng, Y. T. Chen, J. K. Liu, and W. H. Ting. "Three-dimensional analysis of biplanar cephalograms." European Journal of Orthodontics 32, no. 6 (July 21, 2010): 627–32. http://dx.doi.org/10.1093/ejo/cjq026.

Full text
APA, Harvard, Vancouver, ISO, and other styles
25

Stamm, Thomas, Holger A. Brinkhaus, Ulrike Ehmer, Norbert Meier, and Friedhelm Bollmann. "Computer-aided automated landmarking of cephalograms." Journal of Orofacial Orthopedics / Fortschritte der Kieferorthop�die 59, no. 2 (March 1998): 73–81. http://dx.doi.org/10.1007/bf01340641.

Full text
APA, Harvard, Vancouver, ISO, and other styles
26

Wang, Shumeng, Huiqi Li, Jiazhi Li, Yanjun Zhang, and Bingshuang Zou. "Automatic Analysis of Lateral Cephalograms Based on Multiresolution Decision Tree Regression Voting." Journal of Healthcare Engineering 2018 (November 19, 2018): 1–15. http://dx.doi.org/10.1155/2018/1797502.

Full text
Abstract:
Cephalometric analysis is a standard tool for assessment and prediction of craniofacial growth, orthodontic diagnosis, and oral-maxillofacial treatment planning. The aim of this study is to develop a fully automatic system of cephalometric analysis, including cephalometric landmark detection and cephalometric measurement in lateral cephalograms for malformation classification and assessment of dental growth and soft tissue profile. First, a novel method of multiscale decision tree regression voting using SIFT-based patch features is proposed for automatic landmark detection in lateral cephalometric radiographs. Then, some clinical measurements are calculated by using the detected landmark positions. Finally, two databases are tested in this study: one is the benchmark database of 300 lateral cephalograms from 2015 ISBI Challenge, and the other is our own database of 165 lateral cephalograms. Experimental results show that the performance of our proposed method is satisfactory for landmark detection and measurement analysis in lateral cephalograms.
APA, Harvard, Vancouver, ISO, and other styles
27

Nedeljkovic, Nenad, Branislav Glisic, Evgenija Markovic, Ivana Scepan, and Zorana Stamenkovic. "Orthodontic treatment of nongrowing patient with class II division 2 malocclusion by Herbst appliance." Vojnosanitetski pregled 66, no. 10 (2009): 840–44. http://dx.doi.org/10.2298/vsp0910840n.

Full text
Abstract:
Background. Inheritance is most casual etiological factor of Class II division 2 malocclusion. This kind of malocclusion is very difficult for treatment specially in older patients. Case report. In the female patient, 20 years old, at the beginning of the treatment at the School of Dentistry in Belgrade, lateral cephalogram showed skeletal and dentoalveolar Class II division 2 malocclusion. She was in the Herbst treatment for 8 months and 12 months more with a fixed multibracket appliance. The measurements were performed on lateral cephalograms before and after the treatment: ii, is, mi, ms, Pg and ss. The distance from these points to occlusal perpendicular line (Olp) were measured and compared from cephalogram before to cephalogram after the treatment. Temporomandibular joint (TMJ) tomograms were compared from before and after the treatment by superimposition. Correction was found in molar and incisor relation, overjet and overbite. There were found sagital skeletal changes and soft tissue profile improvement. Conclusion. Herbst appliance is effective in the treatment of Class II malocclusions, even in adult patients. Dental and skeletal changes as a result of Herbst treatment could be good choice instead of camouflage orthodontics or surgical decision.
APA, Harvard, Vancouver, ISO, and other styles
28

Tong, W., S. T. Nugent, P. H. Gregson, G. M. Jensen, and D. F. Fay. "Landmarking of cephalograms using a microcomputer system." Computers and Biomedical Research 23, no. 4 (August 1990): 358–79. http://dx.doi.org/10.1016/0010-4809(90)90027-a.

Full text
APA, Harvard, Vancouver, ISO, and other styles
29

Kalina, Edyta, Ewa Sobieska, Kacper Kalina, and Małgorzata Zadurska. "Inclination of maxillary and mandibular incisors – comparison of measurements from teleroentgenograms and CBCT." Forum Ortodontyczne 13, no. 2 (June 1, 2017): 89–96. http://dx.doi.org/10.5604/01.3001.0010.3034.

Full text
Abstract:
The assessment of incisor location in lateral cephalograms is a standard strategy in orthodontic diagnostics. However, determination of reference points on apices of roots of incisors in the maxilla and mandible is not always precise due to limitations of this examination. CBCT allows to find these points with high precision. Aim. The main aim of the work was to compare measurements of the inclination angle of the most anterior upper incisor to the maxillary base plane (IL+ :NL) and of the lower incisor to the mandibular base plane (IL- :ML) performed in a teleroentgenogram with measurements of the most anterior upper and lower incisors in CBCT. An additional aim was to assess a difference in inclination between the most and the least inclined incisor in the maxilla and mandible in individual patients. Material and methods. Radiological documentation (digital cephalograms and CBCT scans) from 38 patients at the age of 11–46 years (24 females, 14 males) was used in the study. The angle 1+ :NS and 1- :ML were determined in cephalograms for each patient. An angle between the long axis of each maxillary and mandibular incisor and the maxillary base plane and mandibular base plane, respectively, was measured on CBCT scans. The t test for mean pairs was used to compare values of angles obtained in a teleroentgenogram and values of the angle of the most inclined incisor in a CBCT scan. Results. There was a statistically significant difference between the value of the angle 1+ :NS measured in a cephalogram and a value of the angle between the long axis of the most inclined maxillary incisor and the maxillary base plane evaluated in a CBCT scan (p = 0.00). Moreover, there was also a statistically significant difference between the value of the angle 1- :ML measured in a teleroentgenogram and the value of the angle between the long axis of the most inclined mandibular incisor and the mandibular base plane evaluated in a CBCT scan (p = 0.02). Conclusions. 1) The assessment of inclination of maxillary and mandibular incisors in cephalograms is not identical to the assessment of incisor inclination using CBCT scans. 2) CBCT is recommended in order to assess this parameter precisely due to great differences between measurements of the inclination angle of individual incisors in the maxilla and mandible. (Kalina E, Sobieska E, Kalina K, Zadurska M. Inclination of maxillary and mandibular incisors – comparison of measurements from teleroentgenograms and CBCT. Orthod Forum 2017; 13: 89-96).
APA, Harvard, Vancouver, ISO, and other styles
30

J. Patni, Vivek, Swapnagandha R. Kate, Sheetal S. Potnis, and Neeraj E. Kolge. "A simplified method for measurement of palatal bone thickness to select the optimum length of orthodontic mini-implant." APOS Trends in Orthodontics 9 (March 31, 2019): 52–58. http://dx.doi.org/10.25259/apos-9-1-9.

Full text
Abstract:
Introduction The palatal bone is a suitable site for mini-implant placement due to it being a “rootless area” with dense bone. This application has increased with mini-implant-assisted rapid palatal expansion becoming the preferred method of expansion. It is necessary to measure the vertical bone height with a reasonable accuracy, at the implant insertion site, to utilize the maximum available bone support, and to avoid the risk of perforations. As an accepted method, full-volume cone-beam computed tomography (CBCT) scan is advised for the same. This requires an additional procedure, further, radiation exposure, and cost to the patient. The aim of the study was to establish the utility of lateral cephalogram as a simple and reliable method to measure palatal bone thickness for placement of mini-implants in the 1st premolar and 1st molar region, which are the most common sites of mini-implant placement. Materials and Methods A total of 30 CBCT scans and digital lateral cephalograms of patients were selected and analyzed at the 1st premolar and molar region and were statistically evaluated using Student’s t-test and Wilcoxon rank-sum test. Results The results obtained indicated a highly significant correlation between the measurements obtained on lateral cephalograms at both the 1st premolar and 1st molar areas, P < 0.001. Conclusion The data presented show that lateral cephalometry provides a reliable assessment of the quantity of vertical bone for paramedian insertion of a palatal implant.
APA, Harvard, Vancouver, ISO, and other styles
31

Farhidnia, Naimeh, Siamak Soltani, Kamran Aghakhani, Sasan Salehi, Leila Khloosy, Shima Chehreii, Fardin Fallah, and Azadeh Memarian. "The Value of Lateral Cephalometric Variables Measured by Cephalogram in Sex Determining among Iranians." Global Journal of Health Science 9, no. 6 (December 12, 2016): 214. http://dx.doi.org/10.5539/gjhs.v9n6p214.

Full text
Abstract:
PURPOSE: Sex determination is one of the most important aspects of the personal identification in forensic medicine. The present study thus aimed to assess the value of cephalogram in determining sex by applying eleven linear and an angular cephalometric variables measured on lateral cephalograms among Iranians.METHODS: In a cross-sectional study, 11 linear and 1 angular cephalometric measurements were studied. Those are: basion to anterior nasal spine, upper facial height, length of cranial base, total face height, frontal sinus height, mastoidale to sella-nasion plan, mastoidale to porion-orbital plan, mastoid height from cranial base, mastoid with at the level of cranial base, mandibular effective length (central condyle to prognation), occipitofrontal diameter, and gonial angle. Measurements were assessed in 150 individuals (75 males and 75 females) aged 25 to 54 years. After preparing lateral cephalograms, the cephalometric measurements were analyzed using PACS software. SPSS version 22.0 was used for analysis. P values of 0.05 or less were considered statistically significant.RESULTS: With the exception of gonial angle, comparison of lateral cephalometric indices between two sexs showed greater values in males than in females (p<0.001). In general, almost all of the cephalometric measurements were found reliable to distinguish between male and female sex skulls with a high sensitivity (100%) and specificity (97.3% to 1000%).CONCLUSION: The cephalometric measurements used in this study are able to differentiate with high specificity and sensitivity between male and female skull
APA, Harvard, Vancouver, ISO, and other styles
32

Kochhar, Anuraj Singh, Ludovica Nucci, Maninder Singh Sidhu, Mona Prabhakar, Vincenzo Grassia, Letizia Perillo, Gulsheen Kaur Kochhar, Ritasha Bhasin, Himanshu Dadlani, and Fabrizia d’Apuzzo. "Reliability and Reproducibility of Landmark Identification in Unilateral Cleft Lip and Palate Patients: Digital Lateral Vis-A-Vis CBCT-Derived 3D Cephalograms." Journal of Clinical Medicine 10, no. 3 (February 2, 2021): 535. http://dx.doi.org/10.3390/jcm10030535.

Full text
Abstract:
Background: The aim of the retrospective observational study was to compare the precision of landmark identification and its reproducibility using cone beam computed tomography-derived 3D cephalograms and digital lateral cephalograms in unilateral cleft lip and palate patients. Methods: Cephalograms of thirty-one (31) North Indian children (18 boys and 13 girls) with a unilateral cleft lip and palate, who were recommended for orthodontic treatment, were selected. After a thorough analysis of peer-reviewed articles, 20 difficult-to-trace landmarks were selected, and their reliability and reproducibility were studied. These were subjected to landmark identification to evaluate interobserver variability; the coordinates for each point were traced separately by three different orthodontists (OBA, OBB, OBC). Statistical analysis was performed using descriptive and inferential statistics with paired t-tests to compare the differences measured by the two methods. Real-scale data are presented in mean ± SD. A p-value less than 0.05 was considered as significant at a 95% confidence level. Results: When comparing, the plotting of points posterior nasal spine (PNS) (p < 0.05), anterior nasal spine (ANS) (p < 0.01), upper 1 root tip (p < 0.05), lower 1 root tip (p < 0.05), malare (p < 0.05), pyriforme (p < 0.05), porion (p < 0.01), and basion (p < 0.05) was statistically significant. Conclusion: In patients with a cleft lip and palate, the interobserver identification of cephalometric landmarks was significantly more precise and reproducible with cone beam computed tomography -derived cephalograms vis-a-vis digital lateral cephalograms.
APA, Harvard, Vancouver, ISO, and other styles
33

Agrawal, Astitva, Dinesh Kumar Bagga, Poonam Agrawal, and Ravindra Kumar Bhutani. "An evaluation of panoramic radiograph to assess mandibular asymmetry as compared to posteroanterior cephalogram." APOS Trends in Orthodontics 5 (August 24, 2015): 197–201. http://dx.doi.org/10.4103/2321-1407.163421.

Full text
Abstract:
Aim and Objectives To assess the reliability of orthopantomograms (OPGs) in detecting facial asymmetry. Materials and Methods The OPGs and posteroanterior cephalograms for 10 patients with facial asymmetry were obtained from the outpatient department of the dental college. These radiographs were traced and analyzed. Six measurements (four linear and two angular measurements) were made on both sides. Asymmetry was defined by subtracting the right and the left side measurements. The differences from OPG were compared to those obtained from posteroanterior cephalograms. The kappa statistics and intra-class correlation coefficient (ICC) were used to calculate the differences. Results The ICC was calculated between OPGs and posteroanterior cephalograms difference measurements. The class interval for all measurements was noted between 0.61 and 0.84. The ICC was 0.7861, which shows strong correlation between the values (P < 0.0005) by probability 10−5, within 95%, coefficient correlation lies between 0.61 and 0.84. Kappa test gives a value of 0.64, which shows strong agreement between the measurements. Conclusion Individually, the measurements from OPGs may not be reliable but the obtained difference between the values of the OPGs and the posteroanterior cephalograms are comparable in nature and show strong correlation and can be used to detect facial asymmetry.
APA, Harvard, Vancouver, ISO, and other styles
34

Laowansiri, Utumporn, Rolf G. Behrents, Eustaquio Araujo, Donald R. Oliver, and Peter H. Buschang. "Maxillary growth and maturation during infancy and early childhood." Angle Orthodontist 83, no. 4 (November 13, 2012): 563–71. http://dx.doi.org/10.2319/071312-580.1.

Full text
Abstract:
ABSTRACT Objective: To describe maxillary growth and maturation during infancy and early childhood. Materials and Methods: Serial cephalograms (N = 210) of 30 subjects (15 females and 15 males) from the Bolton-Brush Growth Study were analyzed. Each subject had a series of six consecutive cephalograms taken between birth and 5 years of age, as well as one adult cephalogram. Twelve maxillary measurements (eight linear and four angular) and seven landmarks were used to characterize maxillary growth. Maturation of the linear measures was described as a percentage of adult status. Results: Maxillary and anterior cranial base size increased in both sexes between 0.4 and 5 years of age. The linear anteroposterior (AP) measures (S-SE, SE-N, ANS-PNS) increased almost as much as the vertical measures (S-PNS, SE-PNS, N-A, N-ANS) over the first 5 years. After 5 years of age there was significantly more vertical than AP growth. The size and shape changes that occurred were greatest between 0.4 and 1 years; yearly velocities decelerated regularly thereafter. Overall linear growth changes that occurred between 0.5 and 5 years of age (a span of 4.5 years) were generally greater than the changes in maxillary growth that occurred between 5 and 16 years (a span of 11 years). The linear measures showed a gradient of maturation, with the AP measures being more mature than the vertical measures. Male maxillae were less mature than female maxillae at every age. Conclusions: The maxilla undergoes its greatest postnatal growth change during infancy and early childhood, when relative AP growth and maturation are emphasized.
APA, Harvard, Vancouver, ISO, and other styles
35

Fang, Jing Jing, Jia Kuang Liu, Chia Wei Chang, and Yu Cheng Lin. "A Bridging Method between 2D and 3D Cephalometry Using Computed Tomography Synthesized Cephalograms." Applied Mechanics and Materials 284-287 (January 2013): 1589–95. http://dx.doi.org/10.4028/www.scientific.net/amm.284-287.1589.

Full text
Abstract:
Traditional cephalograms are X-ray films, which provide either frontal or lateral overlapped perspective medical imaging. Although computed tomography imaging provides more information in 3-dimensional anatomy, the landmarks for cephalometry are located in space which does not carry normal standards in 3-D cephalometry. The CT natural imaging method is different from X-ray in that they respectively use orthogonal and perspective projections. Thus, we cannot apply the statistical normal values gathered from traditional 2D cephometry to 3D cephalometry. This study makes use of calibrated synthesized cephalograms from computed tomography to construct a cephalometry bridge between 2-D and 3-D. In this thesis, we first review the imaging model of a specific X-ray machine (Asahi OrthoStage AUTO IIIN) by a camera calibration method. We then construct a reference system for a virtual head, and synthesize calibrated X-ray cephalograms using the volume rendering algorithm. System accuracy for the synthesis X-ray cephalograms is verified through an interactive corresponding landmark system between 2-D and 3-D. An experimental clinician was invited to manually place 17 landmarks on the X-rays and their corresponding, shuffled in random order. The systematic error, average error, and standard deviation of landmark positions are 0.15 mm, 0.97 mm, and 0.45 mm, respectively. The interactive system bridges the transformation from orthogonal 3-D to perspective 2-D cephalometry.
APA, Harvard, Vancouver, ISO, and other styles
36

Ritschel, Robert, Till E. Bechtold, and Mirjam Berneburg. "Effect of cephalograms on decisions for early orthodontic treatment." Angle Orthodontist 83, no. 6 (May 31, 2013): 1059–65. http://dx.doi.org/10.2319/021113-124.1.

Full text
Abstract:
ABSTRACT Objective: To assess the extent to which cephalograms modify therapeutic decisions related to early orthodontic treatment. Materials and Methods: Diagnostic records of six patients requiring early treatment were digitized for this purpose. A total of 234 orthodontists were then asked to select therapeutic measures on a treatment-planning sheet at two different times (T1 and T2). Three groups of orthodontists were formed and were provided with case-specific records either including or not including cephalograms and the appended tracing values. Forty-seven orthodontists completed all phases of the questions. Results: Statistical analysis revealed only two statistically significant differences between the first (T1) and second (T2) treatment plans, both concerning options of transverse treatment. None of the other results showed any significant changes from T1 to T2 treatment planning. Conclusion: It follows that cephalograms did not influence therapeutic decisions for early orthodontic treatment and should not be routinely used in very young patients.
APA, Harvard, Vancouver, ISO, and other styles
37

Moffitt, Allen Hall. "Discovery of pathologies by orthodontists on lateral cephalograms." Angle Orthodontist 81, no. 1 (January 2011): 58–63. http://dx.doi.org/10.2319/040510-190.1.

Full text
APA, Harvard, Vancouver, ISO, and other styles
38

Sicurezza, Edoardo, Mariagrazia Greco, Daniela Giordano, Francesco Maiorana, and Rosalia Leonardi. "Accuracy of landmark identification on postero-anterior cephalograms." Progress in Orthodontics 13, no. 2 (September 2012): 132–40. http://dx.doi.org/10.1016/j.pio.2011.10.003.

Full text
APA, Harvard, Vancouver, ISO, and other styles
39

Vucinic, P., Z. Trpovski, and I. Scepan. "Automatic landmarking of cephalograms using active appearance models." European Journal of Orthodontics 32, no. 3 (March 4, 2010): 233–41. http://dx.doi.org/10.1093/ejo/cjp099.

Full text
APA, Harvard, Vancouver, ISO, and other styles
40

Brzoza, D., N. Barrera, G. Contasti, and A. Hernandez. "Predicting vertical dimension with cephalograms, for edentulous patients." Gerodontology 22, no. 2 (June 2005): 98–103. http://dx.doi.org/10.1111/j.1741-2358.2005.00060.x.

Full text
APA, Harvard, Vancouver, ISO, and other styles
41

Nakajima, Osamu. "Complete Denture Fabrication Using Cephalograms and Duplicate Dentures." Journal of Japan Gnathology 18, no. 3 (1997): 362–69. http://dx.doi.org/10.14399/jacd1982.18.362.

Full text
APA, Harvard, Vancouver, ISO, and other styles
42

Qaq, Rawad, Scheila Mânica, and Gavin Revie. "Sex estimation using lateral cephalograms: A statistical analysis." Forensic Science International: Reports 1 (November 2019): 100034. http://dx.doi.org/10.1016/j.fsir.2019.100034.

Full text
APA, Harvard, Vancouver, ISO, and other styles
43

Silva, Maurício Barbosa Guerra da, Bruno Cabús Gois, and Eduardo Franzotti Sant'Anna. "Evaluation of the reliability of measurements in cephalograms generated from cone beam computed tomography." Dental Press Journal of Orthodontics 18, no. 4 (August 2013): 53–60. http://dx.doi.org/10.1590/s2176-94512013000400009.

Full text
Abstract:
OBJECTIVE: The purpose was to compare angular and linear measurements generated in digital cephalometric radiographs and cephalograms synthesized from three-dimensional images. METHODS: Twenty-six individuals (12 men and 14 women) with mean age of 26.3 years were selected. Digital cephalometric radiographs and CBCTs were taken on the same day. The images were imported and analyzed on Dolphin Imaging V.10.5 software, which synthesized cephalograms in perspective projection and magnification of 9.7%. A single observer marked the points and repeated the procedure with an interval of time of ten days to evaluate intraexaminer error. In the statistical analysis paired Student's t test was used to establish the correlation between the measurements. RESULTS: The angular measurements GoGn.SN and IMPA, which involved the Gonial point (Go) and the linear measurements that involved the lips presented significant difference (p < 0.05). The other measurements presented good correlation. CONCLUSION: The measurements in the synthesized cephalograms proved to be reliable.
APA, Harvard, Vancouver, ISO, and other styles
44

Kawamoto, Tatsuo, Nobuyoshi Motohashi, and Kimie Ohyama. "A Case of Oculo-Facio-Cardio-Dental Syndrome with Integrated Orthodontic-Prosthodontic Treatment." Cleft Palate-Craniofacial Journal 41, no. 1 (January 2004): 84–94. http://dx.doi.org/10.1597/02-133.

Full text
Abstract:
Objective Oculo-facio-cardio-dental (OFCD) syndrome is a very rare condition that requires comprehensive dental management because of associated multiple dental anomalies such as canine radiculomegaly, delayed dentition, oligodontia, persistent primary teeth, microdontia, and macrodontia. This report presents a case of OFCD in a Japanese girl (13 years 1 month old). We analyzed cephalograms, panoramic roentgenograms, and dental casts and discuss our integrated orthodontic-prosthodontic treatment. Design The sizes of the tooth crown and root as well as lateral cephalograms were compared with those from a Japanese control group. The outcome of orthodontic treatment was evaluated by comparing cephalograms taken before and after treatment. Results Radiculomegaly was found not only in the upper and lower canines but also the upper central incisors and lower first premolars. Macrodontia was found in the upper central incisors, upper canines, lower canines, and lower first premolars. Microdontia was found in the upper lateral incisor. Lateral cephalometric analysis showed a remarkable hypoplastic midface in both the sagittal and vertical dimensions, coupled with a significantly decreased cranial base length and an increased gonial angle. Serial lateral cephalograms during orthodontic treatment from 13 to 23 years of age demonstrated only slight maxillary growth and significant downward mandibular growth with clockwise rotation in addition to pronounced labial tipping of the upper central incisors. Conclusions Characteristic dental anomalies together with a unique craniofacial dysmorphology were clarified. Successful oral rehabilitation was achieved by integrated orthodontic-prosthodontic treatment.
APA, Harvard, Vancouver, ISO, and other styles
45

Kasinathan, Geetha, Pradeep B. Kommi, Senthil M. Kumar, Aniruddh Yashwant, Nandakumar Arani, and Senkutvan Sabapathy. "Evaluation of Soft Tissue Landmark Reliability between Manual and Computerized Plotting Methods." Journal of Contemporary Dental Practice 18, no. 4 (2017): 317–21. http://dx.doi.org/10.5005/jp-journals-10024-2038.

Full text
Abstract:
ABSTRACT Aim The aim of the study is to evaluate the reliability of soft tissue landmark identification between manual and digital plottings in both X and Y axes. Materials and methods A total of 50 pretreatment lateral cephalograms were selected from patients who reported for orthodontic treatment. The digital images of each cephalogram were imported directly into Dolphin software for onscreen digitalization, while for manual tracing, images were printed using a compatible X-ray printer. After the images were standardized, and 10 commonly used soft tissue landmarks were plotted on each cephalogram by six different professional observers, the values obtained were plotted in X and Y axes. Intraclass correlation coefficient was used to determine the intrarater reliability for repeated landmark plotting obtained by both the methods. Results The evaluation for reliability of soft tissue landmark plottings in both manual and digital methods after subjecting it to interclass correlation showed a good reliability, which was nearing complete homogeneity in both X and Y axes, except for Y axis of throat point in manual plotting, which showed moderate reliability as a cephalometric variable. Intraclass correlation of soft tissue nasion had a moderate reliability along X axis. Soft tissue pogonion shows moderate reliability in Y axis. Throat point exhibited moderate reliability in X axis. Conclusion The interclass correlation in X and Y axes shows high reliability in both hard tissue and soft tissue except for throat point in Y axis, when plotted manually. The intraclass correlation is more consistent and highly reliable for soft tissue landmarks and the hard tissue landmark identification is also consistent. Clinical significance The results obtained for manual and digital methods were almost similar, but the digital landmark plotting has an added advantage in archiving, retrieval, transmission, and can be enhanced during plotting of lateral cephalograms. Hence, the digital method of landmark plotting could be preferred for both daily use and research because of the advantages. How to cite this article Kasinathan G, Kommi PB, Kumar SM, Yashwant A, Arani N, Sabapathy S. Evaluation of Soft Tissue Landmark Reliability between Manual and Computerized Plotting Methods. J Contemp Dent Pract 2017;18(4):317-321.
APA, Harvard, Vancouver, ISO, and other styles
46

Junqueira, Cintia Helena Zingaretti, Guilherme Janson, Marisa Helena Zingaretti Junqueira, Lucas Marzullo Mendes, Eduardo Esberard Favilla, and Daniela Gamba Garib. "Comparison between full face and hemifacial CBCT cephalograms in clinically symmetrical patients: a pilot study." Dental Press Journal of Orthodontics 20, no. 2 (April 2015): 83–89. http://dx.doi.org/10.1590/2176-9451.20.2.083-089.oar.

Full text
Abstract:
INTRODUCTION: One of the advantages of cone-beam computed tomography (CBCT) is the possibility of obtaining images of conventional lateral cephalograms derived from partial or complete reconstruction of facial images. OBJECTIVE: This study aimed at comparing full face, right and left hemifacial CBCT cephalograms of orthodontic patients without clinical facial asymmetry. METHODS: The sample comprised nine clinically symmetrical patients who had pretreament full face CBCT. The CBCTs were reconstructed so as to obtain full face, right and left hemifacial cephalograms. Two observers, at two different times, obtained linear and angular measurements for the images using Dolphin 3D software. Dependent and independent t-tests were used to assess the reproducibility of measurements. Analysis of Variance and Kruskal-Wallis tests were used to compare the variables obtained in the CBCT derived cephalometric views. RESULTS: There was good reproducibility for CBCT scans and no statistically significant differences between measurements of full face, right and left hemifacial CBCT scans. CONCLUSIONS: Cephalometric measurements in full face, right and left hemifacial CBCT scans in clinically symmetrical patients are similar.
APA, Harvard, Vancouver, ISO, and other styles
47

Shetty, Kaushik, Saidath K., Akhil Shetty, M. S. Ravi, Keerthan Shashidhar, and Anushree A. "Assessment and Comparison of Oropharyngeal Airway Dimensions in Skeletal Class II Cases Treated With Forsus FRD and Twin Block Appliances." Journal of Health and Allied Sciences NU 07, no. 02 (June 2017): 008–18. http://dx.doi.org/10.1055/s-0040-1708704.

Full text
Abstract:
Abstract Aims: To assess the changes in the oropharyngeal airway (OAW) dimensions in individuals with retrognathic mandible treated with Forsus FRD and Twin Block appliance to correct the skeletal Class II mal relationship. Methodology: 40 individuals, with Class II skeletal pattern were selected as per inclusion criteria. Pre-treatment lateral cephalograms and hand wrist radiographs were obtained and analyzed. Group 1 with 20 individuals were treated with Forsus FRD and Group 2 with 20 individuals were treated with conventional Twin Block Appliance. Post treatment records were taken after the Class I molar relationship had been obtained. Pre and post treatment cephalograms were compared and analyzed. The data obtained was statistically evaluated using paired t test and unpaired t test. Results: On comparison of pre-treatment and post-treatment cephalograms, increase in Oropharyngeal Airway (OAW) measurements, such as Superior posterior airway space (SPAS), Middle airway space (MAS) and Inferior airway space (IAS) was very highly significant. Conclusion: Our results suggest the existence of a relationship between functional-orthopaedic treatment and increases in OAW dimensions in skeletal Class II growing subjects.
APA, Harvard, Vancouver, ISO, and other styles
48

G Katti, Dr Chandrika, Dr Girish Katti, Dr Archana Mohan, Dr Ashok Kumar Talapaneni, and Dr Prasad Konda. "Correlation of ANB, Beta and Yen angle with soft tissue profile angle in class I and class II patients: A retrospective cephalometric study." RGUHS Journal of Dental Sciences 11, no. 2 (2019): 22–28. http://dx.doi.org/10.26715/rjds.11_2_5.

Full text
Abstract:
In orthodontics, various methods of assessing sagittal jaw base relationship areformulated.Earlier, skeletal pattern was analysed only clinically, with the introduction of Cephalometrics by Broadbent and Hofrath in 1931, ANB angle and Beta angle are being used to describe skeletal discrepancies between the maxilla and mandible. YEN angle is also used as a sagittal dysplasia indicator after its introduction in 2009. The aim of our study was tocorrelate ANB, Beta and Yen angle with soft tissue profile angle in class I and class II patientsTotal of 140 lateral cephalograms of class I and class II patients were selected based on soft tissue profile angle. In each cephalogram, ANB, Beta and YEN angle were measured and compared with soft tissue profile angle. Statistical analysis carried out. Our study concluded that soft tissue drape in both Class I and class II individuals are not significantly correlated with skeletal alignment of maxilla and mandible.
APA, Harvard, Vancouver, ISO, and other styles
49

Kumar, Shashi, Faisal Arshad, Javeriya Nahin, NK Lokesh, and Khadeer Riyaz. "Comparison of the Changes in Hyoid Bone Position in Subjects with Normodivergent and Hyperdivergent Growth Patterns: A Cephalometric Study." APOS Trends in Orthodontics 7 (October 1, 2017): 224–29. http://dx.doi.org/10.4103/apos.apos_61_17.

Full text
Abstract:
Objective The aim of this study is to test the hypothesis that there is no difference in hyoid bone position among individuals with different growth patterns before and after treatment. Materials and Methods Pre- and post-treatment lateral cephalogram of forty Class I adults in the age group of 20–27 years were grouped. All the cases were treated with the first premolar extraction in all quadrants. Based on the growth pattern of the face, individuals were divided into: (1) Group 1 (n = 20): Normodivergent, i.e., FH/MP angle smaller than 30.5° (20 patients). (2) Group 2 (n = 20): Hyperdivergent, i.e., FH/MP angle larger than 30.5° (20 patients). Lateral cephalograms were traced and analyzed manually for evaluation of hyoid bone position. Patients in both groups were treated with preadjusted appliances. Pre- and post-treatment lateral cephalograms were traced, and variables were compared using paired t-test, and the relationship between dentofacial variables, growth pattern, and the hyoid bone position was analyzed using Karl Pearson’s correlation coefficient method. The changes of hyoid position after treatment were compared using t-test. Results The data were analyzed by Kolmogorov–Smirnov and paired t-test. Karl Pearson’s correlation coefficient test was performed to determine whether there was an association between the changes of hyoid and growth pattern. Following retraction of incisors, statistically significant correlation was observed in the pre- and post-treatment values of dentofacial structures and hyoid bone, but no significant correlation was found in position of the hyoid bone in the normodivergent and hyperdivergent groups. In both the groups, hyoid bone moved in an inferior and posterior direction after orthodontic treatment. Conclusion No change was seen in position of the hyoid bone in normodivergent and hyperdivergent groups.
APA, Harvard, Vancouver, ISO, and other styles
50

Kumar, Vandana, John Ludlow, Lucia Helena Soares Cevidanes, and André Mol. "In Vivo Comparison of Conventional and Cone Beam CT Synthesized Cephalograms." Angle Orthodontist 78, no. 5 (September 1, 2008): 873–79. http://dx.doi.org/10.2319/082907-399.1.

Full text
Abstract:
Abstract Objective: To compare measurements from synthesized cone-beam computed tomography (CBCT) lateral cephalograms using orthogonal and perspective projections with those from conventional cephalometric radiographs. Materials and Methods: Thirty-one patients were imaged using CBCT and conventional cephalometry. CBCT volume data were imported in Dolphin 3D. Orthogonal and perspective lateral cephalometric radiographs were created from three-dimensional (3D) virtual models. Twelve linear and five angular measurements were made on synthesized and conventional cephalograms in a randomized fashion. Conventional image measurements were corrected for known magnification. Linear and angular measurements were compared between image modalities using repeated measures analysis of variance. Statistical significance was defined as an α level of .01. Results: With the exception of the Frankfort-mandibular plane angle (P &lt; .0001), angular measurements were not statistically different for any modality (P &gt; .01). Linear measurements, whether based on soft or hard tissue landmarks, were not statistically different (P &gt; .01). Conclusions: Measurements from in vivo CBCT synthesized cephalograms are similar to those based on conventional radiographic images. Thus, additional conventional imaging may generally be avoided when CBCT scans are acquired for orthodontic diagnosis.
APA, Harvard, Vancouver, ISO, and other styles
You might also be interested in the bibliographies on the topic 'Cephalograms' for other source types:
Dissertations / Theses
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!

To the bibliography