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. 2015 Nov-Dec;5(6):513-7.
doi: 10.4103/2231-0762.170528.

Diagnostic features of Angle's Class II div 2 malocclusion

Kiran Kumar Dodda  1 , Singamsetty E R V Prasad  1 , Ravi Krishna Kanuru  1 , Siddhartha Nalluri  1 , Radhika Mittapalli  1 , Raghavendra  1
Affiliations

Diagnostic features of Angle's Class II div 2 malocclusion

Kiran Kumar Dodda et al. J Int Soc Prev Community Dent. 2015 Nov-Dec.

Abstract

Statement of problem: A thorough knowledge of the salient features of malocclusion makes the practitioner to come to a proper diagnosis and to formulate proper mechanotherapy. It also helps to predict the prognosis, prior to the onset of treatment process. Among the various malocclusions, Class II div 2 occurs the least often. The literature review does not clearly describe the classical skeletal and dental features of Angle's Class II div 2 malocclusion.

Purpose of study: The aim of this study is to describe the unique features of Angle's Class II division 2 malocclusion.

Materials and methods: A total of 612 pre-treatment records (study models and cephalograms), with age ranging from 14 to 25 years, were obtained from the hospital records of Drs Sudha and Nageswar Rao Siddhartha Institute of Dental Sciences. Among these samples, 317 were Class II div 1 and 295 were Class II div 2. The lateral cephalograms were analyzed by using Kodak software and the arch width analysis was calculated by using digital vernier calipers.

Results: Student's t test was used for the study. On the cephalograms, the vertical skeletal measurements and few of the dental variables showed a significant difference. On the plaster models, the maxillary transverse measurements revealed a notable discrimination between the groups.

Conclusion: Angle's Class II div 2 malocclusion has a marked horizontal growth pattern with decreased lower facial thirds, palatally inclined upper anteriors, and remarkably increased transverse maxillary arch dimensions.

Keywords: Class II div 2; facial height; growth pattern; malocclusion.

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Figures

Figure 1
Figure 1
Skeletal sagittal parameters
Figure 2
Figure 2
Skeletal vertical parameters – angular
Figure 3
Figure 3
Skeletal vertical parameters – linear
Figure 4
Figure 4
Dental and soft tissue parameters
Figure 5
Figure 5
Maxillary arch width parameters. (a) Maxillary intercanine width (b) Basal arch width at Maxillary canines (c) Maxillary intermolar width (d) Basal arch width at Maxillary molars
Figure 6
Figure 6
Mandibular arch width parameters. (a) Mandibular intercanine width (b) Basal arch width at mandibular canines (c) Mandibular intermolar width (d) Basal arch width at mandibular canines
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