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ORIGINAL RESEARCH
Year : 2014  |  Volume : 1  |  Issue : 2  |  Page : 62-65

Estimating the size of unerupted canine and premolars in a mixed Indian population


1 Department of Orthodontics, Army Dental Centre (Research and Referral), Delhi, India
2 Department of Public Health Dentistry, Sudha Rustagi Dental College, Faridabad, Haryana, India

Correspondence Address:
Abhijeet Kadu
Department of Orthodontics, Army Dental Centre (Research and Referral), Delhi
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/2348-2915.133933

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Introduction: This study was carried out to determine the correlation between the sum of the mandibular permanent incisors and the combined mesiodistal crown diameters of the maxillary and mandibular canine and premolars in a sample of mixed Indian subjects, examine the applicability of the Tanaka and Johnston method of prediction in a mixed Indian population and develop a new prediction method for this specific population. Materials and Methods: The dental models of the dentition of 251 mixed Indian patients below the age of 21 years, who had upper and lower permanent canines and premolars erupted were selected for this study. All the measurements were made by an observer with modified Boley gauge with Vernier caliper. Results: The differences between the predicted widths of the canine and premolars with the Tanaka and Johnston equations and the actual widths were highly statistically significant, as indicated by t-tests. The actual widths of the maxillary canine and premolars showed a significant difference in size (P = 0.0001) from the widths predicted by the Tanaka and Johnston equation, as did the canine and premolars in the mandible (P = 0.0003). Conclusion: The current findings suggest that the accuracy of originally derived Tanaka and Johnston mixed dentition analysis method can be increased using a newly derived regression equations based on a local mixed Indian population.


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