scholarly journals Comparison between the external gonial angle in panoramic radiographs and lateral cephalograms of adult patients with Class I malocclusion

2009 ◽  
Vol 51 (3) ◽  
pp. 425-429 ◽  
Author(s):  
Mostafa Shahabi ◽  
Barat-Ali Ramazanzadeh ◽  
Nima Mokhber
Keyword(s):  
Adult Patients ◽  
Class I ◽  
Panoramic Radiographs ◽  
Gonial Angle ◽  
Lateral Cephalograms

scholarly journals Reliability of panoramic radiography in assessing gonial angle compared to lateral cephalogram in adult patients with Class I malocclusion

2016 ◽  
Vol 28 (3) ◽  
pp. 252 ◽  
Author(s):  
Syed Shahbaz ◽  
Girish Katti ◽  
Chandrika Katti ◽  
Karuna ◽  
Munnawwarulla Khan ◽  
...  
Keyword(s):  
Panoramic Radiography ◽  
Adult Patients ◽  
Class I ◽  
Lateral Cephalogram ◽  
Gonial Angle

scholarly journals Panoramic radiographs for investigating skeletal patternsA comparative study

2019 ◽  
Vol 4 (2) ◽  
pp. 66-78
Author(s):  
Taruna Puri ◽  
Keyword(s):  
Class I ◽  
Regression Equations ◽  
Linear Measurements ◽  
Lateral Cephalogram ◽  
Panoramic Radiographs ◽  
Lateral Cephalograms ◽  
Angular Measurements ◽  
Group A ◽  
Group B ◽  
Age Range

Introduction: The most commonly used diagnostic aids in orthodontics are lateral cephalograms and panoramic radiographs (OPG). The OPG forms an indispensible orthodontic screening tool in providing information about the teeth, their root length, axial inclinations, morphology and structure, eruption sequence and spatial relationships [1] which is mostly qualitative in nature. The purpose of this study was to evaluate whether the use of OPG could be extended for evaluating skeletal patterns and dentofacial characteristics which are routinely measured on lateral cephalograms. Materials and Methods: A total of 80 subjects were chosen, they were divided into two groups: Group A and Group B. Group A included 40 skeletal Class I, dental Class I adults with age range of 18-27 years. Group B included 40 skeletal ClassII, dental Class II Div 1 children with age range of 10 -15 years. The lateral cephalogram and OPG were taken under standard conditions using skeletal cephalostat and various parameters were measured and compared. Results and Conclusion: From this study it was concluded that angular measurements on OPG can be used to predict the corresponding angular measurements from the lateral cephalograms, both for the dental and skeletal parameters but the vertical linear measurements cannot be predicted accurately from OPG. The regression equations obtained from this study showed that the Go-Gn/S-N, ANS-PNS/Go-Me (palatal plane/mandibular plane), and Co-Go/Go-Me parameters could be predicted from OPG within statistically significant levels, and their predictability levels were 20.47%, 31.7%, and 10.88%, respectively for group A and 32.0%.22.08% and 52.36% respectively for group B.

scholarly journals Missing Teeth and Prosthetic Treatment in Patients Treated at College of Dentistry, University of Dammam

2017 ◽  
Vol 2017 ◽  
pp. 1-6 ◽  
Author(s):  
Shaimaa M. Fouda ◽  
Fahad A. Al-Harbi ◽  
Soban Q. Khan ◽  
Jorma I. Virtanen ◽  
Aune Raustia
Keyword(s):  
Medical Records ◽  
Class Ii ◽  
Older Age ◽  
Adult Patients ◽  
Class I ◽  
Class Iii ◽  
Missing Teeth ◽  
Panoramic Radiographs ◽  
Lower Jaw ◽  
Edentulous Patients

The percentage of completely and partially edentulous patients and their prosthetic treatment at the Department of Substitutive Dental Sciences (SDS), College of Dentistry, University of Dammam, were investigated. Panoramic radiographs and medical records of adult patients (n=479, mean age 45.9 years, and range 25–96 years) treated in 2011–2014 were examined. 6% of the patients were completely edentulous, 8% had single jaw edentulousness, and 74% were partially edentulous. Edentulousness was significantly correlated with age and the number of missing teeth was significantly higher among males (p<0.026). Diabetes was significantly associated with complete edentulousness, single edentulous jaw (p value 0.015), and partial edentulousness (p value 0.023). Kennedy class III was the most frequent class of partial edentulousness in single and/or both jaws (p=0.000). Patients having class I and/or class II were treated most often with removable partial dentures (RPD) (p=0.000), while patients having class III were treated with fixed partial dentures (FPD). It was found that complete edentulousness increases in older age and the number of missing teeth was significantly higher among males. Kennedy class III was most common in both upper and lower jaw and was treated more often with FPD than with RPD.

scholarly journals Does the Panoramic Radiography Have the Power to Identify the Gonial Angle in Orthodontics?

2012 ◽  
Vol 2012 ◽  
pp. 1-4 ◽  
Author(s):  
Rıdvan Okşayan ◽  
Ali Murat Aktan ◽  
Oral Sökücü ◽  
Esin Haştar ◽  
Mehmet Ertuğrul Ciftci
Keyword(s):  
Panoramic Radiography ◽  
Panoramic Radiograph ◽  
Class I ◽  
Panoramic Radiographs ◽  
Gonial Angle ◽  
Cephalometric Radiograph ◽  
Orthodontic Patients ◽  
Lateral Cephalometric Radiograph ◽  
Inferior Border ◽  
Age Range

Purpose. The objective of this study was to assess gonial angle under the angle classification by comparing panoramic radiograph and lateral cephalometric radiograph.Materials and Methods. 49 patients (25 males, 24 females) with an age range of 12–29 years participated in the present study. Subjects were retrospectively selected among those categorised as skeletal and dental Class I, II, and III malocclusion group. Using lateral cephalometric radiograph, mandibular and ramal planes were drawn and based on these planes. Gonial angle was determined from two tangents which were drawn from the inferior border of the mandible and posterior borders of the condyle and ramus of both sides in the panoramic radiographs. Multiple comparison tests (ANOVA) were used to determine differences between the three angle groups.Results. There were no significant differences between Class I, II, and III malocclusion group values of gonial angles determined by lateral cephalometric radiograph and panoramic radiographs ().Conclusion. Panoramic radiograph results were shown to be as reliable as lateral cephalometric radiograph in all angle classifications. Panoramic radiography can be used as an alternative radiographic technique to detect gonial angle in orthodontic patients.

scholarly journals Björk-Jarabak cephalometric analysis on CBCT synthesized cephalograms with different dentofacial sagittal skeletal patterns

2014 ◽  
Vol 19 (6) ◽  
pp. 46-53 ◽  
Author(s):  
Yalil Augusto Rodriguez-Cardenas ◽  
Luis Ernesto Arriola-Guillen ◽  
Carlos Flores-Mir
Keyword(s):  
Class I ◽  
Cone Beam ◽  
Cephalometric Analysis ◽  
Class Iii ◽  
Class Iii Malocclusion ◽  
Skeletal Class ◽  
Gonial Angle ◽  
Lateral Cephalograms ◽  
Standard Values ◽  
Range Test

OBJECTIVE: The objective of this study was to evaluate the Björk and Jabarak cephalometric analysis generated from cone-beam computed tomography (CBCT) synthesized lateral cephalograms in adults with different sagittal skeletal patterns.METHODS: The sample consisted of 46 CBCT synthesized cephalograms obtained from patients between 16 and 40 years old. A Björk and Jarabak cephalometric analysis among different sagittal skeletal classes was performed. Analysis of variance (ANOVA), multiple range test of Tukey, Kruskal-Wallis test, and independent t-test were used as appropriate.RESULTS: In comparison to the standard values: Skeletal Class III had increased gonial and superior gonial angles (P < 0.001). This trend was also evident when sex was considered. For Class I males, the sella angle was decreased (P = 0.041), articular angle increased (P = 0.027) and gonial angle decreased (P = 0.002); whereas for Class III males, the gonial angle was increased (P = 0.012). For Class I females, the articular angle was increased (P = 0.029) and the gonial angle decreased (P = 0.004). Björk's sum and Björk and Jabarak polygon sum showed no significant differences. The facial biotype presented in the three sagittal classes was mainly hypodivergent and neutral.CONCLUSIONS: In this sample, skeletal Class III malocclusion was strongly differentiated from the other sagittal classes, specifically in the mandible, as calculated through Björk and Jarabak analysis.

Growth Pattern in Skeletal Class I Malocclusion: A Cephalometric Study

2021 ◽  
Vol 11 (1) ◽  
pp. 49-54
Author(s):  
Sujal Amatya ◽  
Rabindra Man Shrestha ◽  
Shristi Napit
Keyword(s):  
Growth Pattern ◽  
Strong Correlation ◽  
Class I ◽  
Facial Growth ◽  
Skeletal Class ◽  
Facial Height ◽  
Lateral Cephalograms ◽  
Growth Modification ◽  
Cephalometric Study

Introduction: Great emphasis has been given to the evaluation of sagittal apical base relationship in orthodontic diagnosis and treatment planning. The prediction of magnitude and direction of facial growth based on sagittal relationship will help in orthodontic treatment with growth modification. The objective of the study is to assess the growth pattern in skeletal Class I malocclusion. Materials and Method: 104 subjects (52 male and 52 female) with the age between 18-30 years with Class I skeletal relation was selected from lateral cephalograms of patients visiting the Department of Orthodontics, Kantipur Dental College. The ANB angle was measured to assess the sagittal jaw relationship and the Jarabak’s ratio to access the growth pattern. Descriptive statistics were calculated for each parameter. Pearson’s test was done to evaluate the correlation between the parameters. Independent t-test was done to compare Anterior Facial height (AFH), Posterior Facial Height (PFH) and Jarabak’s ratio between male and female subjects. Result: Among the total subjects with skeletal Class I malocclusion; hyperdivergent growth pattern was least (10.57%), followed by normodivergent (18.26%) and hypodivergent growth pattern (71.15%). Mean Jarabak’s ratio for hyperdivergent, normodivergent and hypodivergent growth pattern were 58.65±1.94, 63.98±0.85 and 69.98±4.13 respectively. Very strong correlation was found between AFH and PFH in hyperdivergent (r = 0.821) and normodivergent group (r =0.978). Strong correlation was found in hypodivergent group between AFH and PFH (r =0.743). Also, strong correlation was found in hypodivergent group between PFH and Jarabak’s ratio (r =0.643). Conclusion: Hypodivergent growth pattern was the dominant growth pattern in skeletal Class I malocclusion. PFH influenced the determination of Jarabak’s ratio more than the AFH in hypodivergent growth pattern. Hypodivergent growth pattern is correlated with large SNB angle.

scholarly journals Anterior open bite: cephalometric evaluation of the dental pattern

2006 ◽  
Vol 17 (1) ◽  
pp. 68-70 ◽  
Author(s):  
Adriana Sasso Stuani ◽  
Andréa Sasso Stuani ◽  
Maria Bernadete Sasso Stuani ◽  
Maria da Conceição Pereira Saraiva ◽  
Mírian Aiko Nakane Matsumoto
Keyword(s):  
Open Bite ◽  
Occlusal Plane ◽  
Anterior Open Bite ◽  
Panoramic Radiographs ◽  
Lateral Cephalograms ◽  
Significant Difference ◽  
Dental Origin ◽  
Dental Pattern ◽  
Mandibular Incisors

The purpose of this study was to compare the dental pattern of patients with anterior open bite malocclusion to that of individuals with normal overbite by utilization of lateral cephalograms, panoramic radiographs and study casts. The findings showed that there was no significant difference in the inclination of the occlusal plane (SN.PlO) and position of the maxillary and mandibular incisors (1-NA, 1-NB) between both groups of individuals; but the angles of inclination of the maxillary and mandibular incisors (1.1, 1.NA and 1.NB) differed statistically between patients with anterior open bite of the individuals that presented normal overbite, which suggests that the anterior open bite may be of dental origin.

scholarly journals Diagnostic validity of different cephalometric analyses for assessment of the sagittal skeletal pattern

2018 ◽  
Vol 23 (5) ◽  
pp. 75-81 ◽  
Author(s):  
Maheen Ahmed ◽  
Attiya Shaikh ◽  
Mubassar Fida
Keyword(s):  
Reliability And Validity ◽  
Class I ◽  
Kappa Statistics ◽  
Class Iii ◽  
Validity And Reliability ◽  
Substantial Agreement ◽  
Lateral Cephalograms ◽  
Skeletal Pattern ◽  
Beta Angle ◽  
Final Group

Abstract Introduction: Numerous cephalometric analyses have been proposed to diagnose the sagittal discrepancy of the craniofacial structures. Objective: This study aimed at evaluating the reliability and validity of different skeletal analyses for the identification of sagittal skeletal pattern. Methods: A total of 146 subjects (males = 77; females = 69; mean age = 23.6 ± 4.6 years) were included. The ANB angle, Wits appraisal, Beta angle, AB plane angle, Downs angle of convexity and W angle were used to assess the anteroposterior skeletal pattern on lateral cephalograms. The sample was classified into Class I, II and III groups as determined by the diagnostic results of majority of the parameters. The validity and reliability of the aforementioned analyses were determined using Kappa statistics, sensitivity and positive predictive value (PPV). Results: A substantial agreement was present between ANB angle and the diagnosis made by the final group (k = 0.802). In the Class I group, Downs angle of convexity showed the highest sensitivity (0.968), whereas ANB showed the highest PPV (0.910). In the Class II group, ANB angle showed the highest sensitivity (0.928) and PPV (0.951). In the Class III group, the ANB angle, the Wits appraisal and the Beta angle showed the highest sensitivity (0.902), whereas the Downs angle of convexity and the ANB angle showed the highest PPV (1.00). Conclusion: The ANB angle was found to be the most valid and reliable indicator in all sagittal groups. Downs angle of convexity, Wits appraisal and Beta angle may be used as valid indicators to assess the Class III sagittal pattern.

scholarly journals The Value of Lateral Cephalometric Variables Measured by Cephalogram in Sex Determining among Iranians

2016 ◽  
Vol 9 (6) ◽  
pp. 214
Author(s):  
Naimeh Farhidnia ◽  
Siamak Soltani ◽  
Kamran Aghakhani ◽  
Sasan Salehi ◽  
Leila Khloosy ◽  
...  
Keyword(s):  
Cranial Base ◽  
Personal Identification ◽  
Effective Length ◽  
Cross Sectional ◽  
Male And Female ◽  
Gonial Angle ◽  
Anterior Nasal Spine ◽  
Specificity And Sensitivity ◽  
Lateral Cephalograms ◽  
Cephalometric Measurements

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

scholarly journals PREVALENCE OF MANDIBULAR ASYMMETRY IN SKELETAL CLASS I ADULT PATIENTS

2014 ◽  
Vol 2 (2) ◽  
pp. 189 ◽  
Author(s):  
Bruno Frazão Gribel ◽  
Guilherme Thiesen ◽  
Tássia Silvana Borges ◽  
Maria Perpétua Mota Freitas
Keyword(s):  
Computed Tomography ◽  
Calculation Method ◽  
Significant Error ◽  
Adult Patients ◽  
Class I ◽  
Cone Beam ◽  
Skeletal Class ◽  
Mandibular Asymmetry ◽  
Computed Tomography Images ◽  
Significant Difference

AIM: The objective of this study was evaluating the prevalence of mandibular asymmetry in skeletal Class I adult patients. MATERIALS AND METHODS: The sample was composed by cone-beam computed tomography images of 250 skeletal Class I patients with age from 18 to 70 years old. The side deviation of mandibular asymmetry was evaluated (right and left), as well as the intensity of this asymmetry. People with gnathic deviation until 2mm were considered as patients with slight asymmetry; deviation between 2 and 5mm was considered moderate asymmetry and those higher than 5mm as severe asymmetries. The error calculation method was performed and there was not significant error in the measurements. To verify the association between the prevalence of mandibular asymmetry and the gender of individuals, the Χ2 was carried out and the significant level adopted was 5% (p<0.05). RESULTS: The results showed that mandibular deviation occurred more frequently to the left side in both genders (male 56.5% e female 58.2%), without statistically significant difference between them (p=0.792). Besides, the prevalence of slight, moderate and severe asymmetries were, respectively 61%, 27% and 12% for males and 54%, 28% and 18% for female; and there was not statistically significant difference (p=0.366) between the gender of the sample evaluated. CONCLUSION: In this study, both deviation and intensity of mandibular asymmetry did not present preference regarding to the gender.

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