Effect of Rate of Third Molar Impaction on Mandibular Arch Crowding in Skeletal Class I Patients

Dr. Devyani Sangai, Dr. Sujoy Banerjee, Dr. Usha Shenoy, Dr. Ananya Hazare, Dr. Himija Karia, Dr. Pritam Khorgade, Dr. Sangita Bhattacharya

Abstract: Aim: Assessment of Effect of rate of third molar impaction on lower arch crowding in skeletal class I patients. Materials and Method: 150 Untreated subjects with different facial divergence pattern between age 16 – 25 years seeking for orthodontic treatment, crowding of lower arch calculated by using caliper and imp-action of lower 3rd molar is evaluated by Winter’s classification. Results: Mandibular anterior crowding is divided into four groups according to severity, out of which 4-6 mm of crowding most commonly found value. In Hypo-divergent facial pattern Mesio-angular impaction is most commonly found. Crowding in hypo-divergent patients is mostly moderate between 4-6 mm which is 45 % and also 20 % in 0-2 mm and more than 6 mm group while only 15 % in 2-4mm crowding. Normodivergent subjects had 30 % crowding in 2-4 mm and 0-2 mm group and 20 % in other groups. Conclusion: Disto-angular impaction and vertical impaction type has significantly less crowding severity as compared to mesio-angular and horizontal type irrespective of facial profile.

Keywords: Third molar, impaction, crowding

How to Cite?: Dr. Devyani Sangai, Dr. Sujoy Banerjee, Dr. Usha Shenoy, Dr. Ananya Hazare, Dr. Himija Karia, Dr. Pritam Khorgade, Dr. Sangita Bhattacharya, "Effect of Rate of Third Molar Impaction on Mandibular Arch Crowding in Skeletal Class I Patients", Volume 9 Issue 7, July 2020, International Journal of Science and Research (IJSR), Pages: 812-814, https://www.ijsr.net/getabstract.php?paperid=SR20710121721, DOI: https://dx.doi.org/10.21275/SR20710121721