A Comparative Analysis of the Class III Malocclusion with and without an Anterior Mandibular Displacement on Closure

1988 ◽  
Vol 15 (1) ◽  
pp. 33-40
Author(s):  
D. A. Slattery
Keyword(s):  
Comparative Analysis ◽  
Class Iii ◽  
Class Iii Malocclusion ◽  
End Of Treatment ◽  
Skeletal Pattern ◽  
Cephalometric Study

A retrospective cephalometric study investigated the differences in the skeletal pattern of the Class III malocclusion. Thirty Caucasian adolescents with an anterior mandibular displacement on closure were compared to an equal number without such a displacement before treatment, at the end of treatment and at least 1 year out of retention.

scholarly journals Relationship between skeletal Class II and Class III malocclusions with vertical skeletal pattern

2019 ◽  
Vol 24 (4) ◽  
pp. 63-72
Author(s):  
Sonia Patricia Plaza ◽  
Andreina Reimpell ◽  
Jaime Silva ◽  
Diana Montoya
Keyword(s):  
Class Ii ◽  
Class Ii Malocclusion ◽  
Class Iii ◽  
Class Iii Malocclusion ◽  
Multinomial Regression ◽  
Lateral Cephalogram ◽  
Cross Sectional ◽  
Skeletal Class ◽  
Skeletal Class Ii ◽  
Skeletal Pattern

ABSTRACT Objective: The purpose of this study was to establish the association between sagittal and vertical skeletal patterns and assess which cephalometric variables contribute to the possibility of developing skeletal Class II or Class III malocclusion. Methods: Cross-sectional study. The sample included pre-treatment lateral cephalogram radiographs from 548 subjects (325 female, 223 male) aged 18 to 66 years. Sagittal skeletal pattern was established by three different classification parameters (ANB angle, Wits and App-Bpp) and vertical skeletal pattern by SN-Mandibular plane angle. Cephalometric variables were measured using Dolphin software (Imaging and Management Solutions, Chatsworth, Calif, USA) by a previously calibrated operator. The statistical analysis was carried out with Chi-square test, ANOVA/Kruskal-Wallis test, and an ordinal multinomial regression model. Results: Evidence of association (p< 0.05) between sagittal and vertical skeletal patterns was found with a greater proportion of hyperdivergent skeletal pattern in Class II malocclusion using three parameters to assess the vertical pattern, and there was more prevalent hypodivergence in Class III malocclusion, considering ANB and App-Bpp measurements. Subjects with hyperdivergent skeletal pattern (odds ratio [OR]=1.85-3.65), maxillary prognathism (OR=2.67-24.88) and mandibular retrognathism (OR=2.57-22.65) had a significantly (p< 0.05) greater chance of developing skeletal Class II malocclusion. Meanwhile, subjects with maxillary retrognathism (OR=2.76-100.59) and mandibular prognathism (OR=5.92-21.50) had a significantly (p< 0.05) greater chance of developing skeletal Class III malocclusion. Conclusions: A relationship was found between Class II and Class III malocclusion with the vertical skeletal pattern. There is a tendency toward skeletal compensation with both vertical and sagittal malocclusions.

scholarly journals Class III malocclusion and bilateral cross-bite in an adult patient treated with miniscrew-assisted rapid palatal expander and aligners

2018 ◽  
Vol 88 (5) ◽  
pp. 649-664 ◽  
Author(s):  
Luca Lombardo ◽  
Antonella Carlucci ◽  
Bortolo Giuliano Maino ◽  
Anna Colonna ◽  
Emanuele Paoletto ◽  
...  
Keyword(s):  
Case Report ◽  
Conservative Treatment ◽  
Adult Patient ◽  
Successful Treatment ◽  
Cone Beam ◽  
Class Iii ◽  
Class Iii Malocclusion ◽  
Surgical Guide ◽  
Before And After ◽  
Skeletal Pattern

ABSTRACT This case report describes the use of a miniscrew-assisted rapid palatal expander and aligners to correct bilateral cross-bite and crowding in an adult patient with a Class III skeletal pattern. A digitally designed surgical guide was three-dimensionally printed and used to accurately insert four miniscrews into the palate; these were employed to anchor a novel miniscrew-assisted rapid palatal expander appliance without any dental anchorage. Cone-beam computed tomograms before and after miniscrew-assisted rapid palatal expander treatment demonstrated the orthopedic expansion of the maxilla without dental tipping. The patient was then fitted with aligners to correct crowding and malocclusion. This case report demonstrates the successful treatment of an adult patient with a narrow maxilla and bilateral cross-bite using a nonsurgical, conservative treatment.

Class III Malocclusion: A Cephalometric Study of Saudi Arabians

1989 ◽  
Vol 16 (3) ◽  
pp. 201-206 ◽  
Author(s):  
Andrew P. Toms
Keyword(s):  
Saudi Arabian ◽  
Control Group ◽  
Class Iii ◽  
Class Iii Malocclusion ◽  
Mean Values ◽  
Gonial Angle ◽  
Mandibular Plane ◽  
Saudi Arabians ◽  
Cephalometric Study ◽  
Bimaxillary Protrusion

The records of 500 consecutive Saudi Arabian patients referred for orthodontic treatment were examined clinically and cephalometrically for Class III malocclusion. A control group was drawn at random from the same sample. The incidence of Class III was 9·4 per cent, with mandibular prognathism being the commonest presentation of the malocclusion. The upper and lower incisors exhibited a marked degree of dentoalveolar compensation, on dental bases having mean values of SNA—78·77° and SNB—81·17°. The maxillary length was reduced, as were the saddle and maxillary—mandibular plane angles. The gonial angle (ArGoMe), anterior and posterior facial heights, and mandibular lengths (ArGo, ArPo) were all significantly larger than the control group. The cephalometric values of the control group showed the increased tendency to bimaxillary protrusion in the Saudi Arabian sample.

scholarly journals Expansion/Facemask Treatment of an Adult Class III Malocclusion

2014 ◽  
Vol 2014 ◽  
pp. 1-6
Author(s):  
Gregory W. Jackson ◽  
Neal D. Kravitz
Keyword(s):  
Face Mask ◽  
Class Iii ◽  
Class Iii Malocclusion ◽  
Older Children ◽  
Maxillary Expansion ◽  
Viable Option ◽  
Maxillary Protraction ◽  
Skeletal Pattern ◽  
Maxillary Deficiency ◽  
The Ideal

The orthodontic treatment of class III malocclusion with a maxillary deficiency is often treated with maxillary protraction with or without expansion. Skeletal and dental changes have been documented which have combined for the protraction of the maxilla and the correction of the class III malocclusion. Concerning the ideal time to treat a developing class III malocclusion, studies have reported that, although early treatment may be the most effective, face mask therapy can provide a viable option for older children as well. But what about young adults? Can the skeletal and dental changes seen in expansion/facemask therapy in children and adolescents be demonstrated in this age group as well, possibly eliminating the need for orthodontic dental camouflage treatment or orthognathic surgery? A case report is presented of an adult class III malocclusion with a Class III skeletal pattern and maxillary retrusion. Treatment was with nonextraction, comprehensive edgewise mechanics with slow maxillary expansion with a bonded expander and protraction facemask.

scholarly journals Correlation of Angle SNA to Angle NSAR in Normal Occlusion, Class II Division I and Class III Malocclusion in Vidarbha Region - A Cephalometric Study

2021 ◽  
Vol 10 (32) ◽  
pp. 2543-2547
Author(s):  
Rashmi Jawalekar ◽  
Pushpa Hazare ◽  
Ranjit H. Kamble ◽  
Vikrant V. Jadhav
Keyword(s):  
Morphological Feature ◽  
Class Ii ◽  
Division I ◽  
Class Iii ◽  
Class Iii Malocclusion ◽  
Normal Occlusion ◽  
Facial Harmony ◽  
Structural Imbalance ◽  
Level Of Significance ◽  
Cephalometric Study

BACKGROUND Facial prognathism may be because of prognathic maxilla, prognathic mandible or aggregate of both. Numerous studies performed to diagnose a single morphological feature commonly producing protrusive relationship, revealed that ‘a single morphological feature does not ordinarily produce a protrusive relationship. Existence of structural imbalance in one area also affects the nature of balance in other areas. A number of separate but inter-related cause and effect factors tend to augment each other in a cumulative and composite manner. Effect of marked discrepancy of an individual’s facial part could be cancelled or nullified by deviation of another part in opposite direction, ultimately resulting in good facial harmony. In this study by means of cephalometric roentgenography, the relation between Angle SNA and Angle NSAr was assessed in Vidharbhites, having normal occlusion, Class II division I and class III malocclusion. METHODS 40 individuals of normal occlusion, Class II division I and Class III Malocclusion, each between 16 and 25 years were analysed. These subjects were selected from patients reporting the outpatient department of Government Dental College, Nagpur. Statistically correlation between angles SNA and NSAr at level of significance 5 % was assessed. RESULTS After data collection a thorough observation & analysis was done and co-relation coefficient between SNA angle & NSAr (F--1.054 M--0.7981), also standard deviation of angular cephalometric measurement between males & females was found out in the population, leading to discussion on topic ‘Facial prognathism is due to maxillary prognathism, mandibular prognathism or combination of both’. In Females SNA was found to be 81 - 800 1.91310 and in males SNA was 82.1660 4. 380 respectively. CONCLUSIONS The results inferred that “Marked part of variation in Angle SNA can be explained by variation in Angle NSAr. KEY WORDS Angle SNA, Angle NSAr, Correlation

scholarly journals Changes in soft tissue profile during the treatment of Class III malocclusion treated with Class III activator

2013 ◽  
Vol 2 (2) ◽  
pp. 24-29
Author(s):  
MSA Mamun ◽  
MLA Hyder ◽  
MZ Hossain
Keyword(s):  
Soft Tissue ◽  
Treated Patient ◽  
Class Iii ◽  
Class Iii Malocclusion ◽  
Facial Profile ◽  
Skeletal Class ◽  
Soft Tissue Profile ◽  
Tissue Changes ◽  
Soft Tissue Changes ◽  
Cephalometric Study

Objective: This longitudinal retrospective cephalometric study was undertaken in an attempt to evaluate the effect of Class III activator on the soft tissue structures in subjects with skeletal Class III. Methods: The material consisted of cephalometric films of 26 Class III patients (13females and 13 males, with a mean age of 13.58±4.38 years). Each treated patient was matched before treatment with Class III subject for sex and age. Differences at T1 and T2 were examined using paired t-test. Results: After treatment the patients' soft tissue profile improved significantly compare with before treatment. Conclusion: Soft tissue changes were found in patients treated by Class III activator in skeletal Class III patients. Clinical relevance: Class III activator may be an efficient method to improving soft tissue facial profile in Skeletal Class III malocclusion. DOI: http://dx.doi.org/10.3329/bjodfo.v2i2.16160 Ban J Orthod & Dentofac Orthop, April 2012; Vol-2, No.2, 24-29

Efficacy of Planas Direct Tracks for Early Treatment of Pseudo Class III Malocclusion: A Clinical and Cephalometric Study

2014 ◽  
Vol 48 (4_suppl3) ◽  
pp. 466-474
Author(s):  
Ketan Sukumar Vora ◽  
Abhijeet Misal ◽  
Nandalal Toshniwal ◽  
Sameer Patil
Keyword(s):  
Early Treatment ◽  
Class Iii ◽  
Class Iii Malocclusion ◽  
Cephalometric Study

Use of the Face Mask in the Treatment of Maxillary Retrusion—A Case Report

1991 ◽  
Vol 18 (4) ◽  
pp. 333-338 ◽  
Author(s):  
S. Doğan ◽  
N. Ertürk
Keyword(s):  
Case Report ◽  
Active Treatment ◽  
Face Mask ◽  
Class Iii ◽  
Class Iii Malocclusion ◽  
Skeletal Pattern ◽  
The Face

A case report is presented of a Class III malocclusion with a Class III skeletal pattern and maxillary retrusion. The patient, an 11-year-old girl, was treated with an orthopaedic face mask in conjunction with standard Edgewise mechanics. Treatment was completed after 14 months, and proved to be stable following the active treatment and at recall 4 years later.

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