Volume : IX, Issue : II, February - 2019

ANALYSIS OF TOOTH SIZE DISCREPANCIES AMONG 5 DIFFERENT MALOCCLUSION GROUPS.

Dr. Shanahas M. V, Dr. Amarnath B. C, Dr. Manjunath Hegde, Dr. Roopak M. David, Dr. Pramod Mohan

Abstract :

INTRODUCTION: Bolton’s analysis is the most popular and best known method for determining tooth size abnormality. Bolton’s original study was carried out on a group of Caucasian females with excellent occlusions, and so its application to males, non Caucasian populations, and different malocclusion groups has been questioned. OBJECTIVES: To compare Bolton’s tooth size ratio with normal occlusion; to determine whether there is a difference in the tooth size discrepancies when compå various malocclusion groups and between males and females; to determine the prevalance of tooth size discrepancies in the overall sample of the study. METHODS: The study was carried out using a total of 150 dental casts and was grouped based on malocclusion. Bolton’s anterior and overall ratios were calculated for each malocclusion. Tooth size ratios of normal occlusion was compared to Bolton’s ratio. Tooth size discrepancies was then compared between various malocclusions and between males and females. Also the incidence of significant discrepancies from the Bolton’s mean was assessed in each malocclusion group. RESULTS: Class II div 1 had least anterior and overall ratio and Class III and Class II div 2 have highest anterior and overall ratio. 12 % of tooth size discrepancy was found in the present sample. No significant difference was found between genders. CONCLUSION: 1. A statistically significant increase in the anterior and overall ratios of Class III and Class II div 2 malocclusion indicating mandibular tooth material excess. 2. A statistically significant decrease in the anterior and overall ratios of Class II div 1 malocclusion groups indicating maxillary tooth material excess

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Article: Download PDF   DOI : 10.36106/ijar  

Cite This Article:

ANALYSIS OF TOOTH SIZE DISCREPANCIES AMONG 5 DIFFERENT MALOCCLUSION GROUPS., Dr. Shanahas M. V, Dr. Amarnath B.C, Dr. Manjunath Hegde, Dr. Roopak M. David, Dr. Pramod Mohan INDIAN JOURNAL OF APPLIED RESEARCH : Volume-9 | Issue-2 | February-2019


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