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Prevalence of Skeletal Malocclusions and the Associated Contributing Factors
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| Author:
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S. ABIRAMI, DR. ASHWIN MATHEW GEORGE, DR. REMMIYA MARY VARGHESE
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| Abstract:
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The aim of this study was to evaluate the prevalence of skeletal factor (maxillary excess and /or mandibular deficiency) for the skeletal class II and class III malocclusion in South Indian population. Lateral cephalograms of 100 individuals of either gender in the age group of 18-30 years were selected by using random sampling method during the period of October 2019 to March 2020 having malocclusions were included in the study. The parameters such as ANB of steiner's analysis was used to discrete the skeletal malocclusion into 3 groups such as skeletal class I malocclusion (ANB angle between 0-4 degrees), skeletal class II malocclusion (ANB angle >4 degrees), skeletal class III malocclusion (below -1 degrees). SNA angle used for maxillary skeletal assessment and SNB angle used for prediction of mandibular assessment. The data was collected and subjected to descriptive statistics and inferential (Chi-square) statistics. The results of the study showed that 80% of the studied sample size had Skeletal class II pattern among other skeletal class I (15 %) and skeletal class III (5%) malocclusion. A statistically non-significant association was found between gender and malocclusion using Chi -square test (P<0.05). Among total skeletal class II malocclusions, Prognathic maxilla was 54% and retrognathic mandible was 43% and combination of above two was 4%. Among total skeletal class III malocclusions, mandibular prognathism was (60%) and retrognathic maxilla was 40%. The present study concluded that Skeletal class II is the most prevalent malocclusion among other skeletal malocclusions. Prognathic maxilla is the contributing factor for skeletal class II malocclusion and mandibular prognathism for skeletal class III malocclusion.
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| Keyword:
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Cephalometric study; mandibular retrognathism; maxillary prognathism; skeletal Class I, II, III malocclusion.
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| EOI:
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-
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| DOI:
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https://doi.org/10.31838/ijpr/2020.SP2.268
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| Download:
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