Swaroopa Rani Ponnada1, Yudistar Venkata Palla2, Vivek Reddy Ganugapanta3. 1. Assistant Professor, Department of Orthodontics, Army College of Dental Sciences , Secunderabad, Telangana, India . 2. Reader, Department of Orthodontics, Mamatha Dental College , Khammam, Telangana, India . 3. Assistant Professor, Department of Orthodontics, Narayana Dental College , Nellore, Andhra Pradesh, India .
Abstract
INTRODUCTION: Space analysis quantifies the amount of crowding within the arches estimating the severity of space discrepancy. The space gaining procedures include extraction and non-extraction procedures like expansion, proximal stripping and molar distalization. AIM: To identify features seen in molar distalization cases. MATERIALS AND METHODS: The sample size comprised 20 patients in whom molar distalization was decided as the treatment plan. The study models and lateral cephalograms of all the patients were taken. Occlusograms were obtained. Model analysis and cephalometric analysis were performed. Descriptive statistical analysis like mean, standard deviation, standard error and mode were done. RESULTS: The parameters in Question gave following results. The Bolton analysis showed anterior mandibular excess with mean value of 1.56mm±1.07. The first order discrepancy between maxillary central and lateral incisors was 5±1.95. The premolar rotation showed mean value of 16.58±5.12. The molar rotation showed the value of 7.66±2.26. The nasolabial angle showed the mean of 101.25±8.7 IMPA of 101.4±5.74. CONCLUSION: The six features studied in molar distalization cases [First order discrepancy between upper central and lateral incisors; Rotation of premolars and molars; Bolton's discrepancy in anterior dentition; Average to horizontal growth pattern; Proclined lower incisors and Obtuse nasolabial angle] can be taken as patterns seen in molar distalization cases and considered as a valid treatment plan.
INTRODUCTION: Space analysis quantifies the amount of crowding within the arches estimating the severity of space discrepancy. The space gaining procedures include extraction and non-extraction procedures like expansion, proximal stripping and molar distalization. AIM: To identify features seen in molar distalization cases. MATERIALS AND METHODS: The sample size comprised 20 patients in whom molar distalization was decided as the treatment plan. The study models and lateral cephalograms of all the patients were taken. Occlusograms were obtained. Model analysis and cephalometric analysis were performed. Descriptive statistical analysis like mean, standard deviation, standard error and mode were done. RESULTS: The parameters in Question gave following results. The Bolton analysis showed anterior mandibular excess with mean value of 1.56mm±1.07. The first order discrepancy between maxillary central and lateral incisors was 5±1.95. The premolar rotation showed mean value of 16.58±5.12. The molar rotation showed the value of 7.66±2.26. The nasolabial angle showed the mean of 101.25±8.7 IMPA of 101.4±5.74. CONCLUSION: The six features studied in molar distalization cases [First order discrepancy between upper central and lateral incisors; Rotation of premolars and molars; Bolton's discrepancy in anterior dentition; Average to horizontal growth pattern; Proclined lower incisors and Obtuse nasolabial angle] can be taken as patterns seen in molar distalization cases and considered as a valid treatment plan.
Entities:
Keywords:
Cephalometrics; Non-extraction; Occlusogram; Space analysis
Authors: Gero S M Kinzinger; Heinrich Wehrbein; Ulrich Gross; Peter R Diedrich Journal: Am J Orthod Dentofacial Orthop Date: 2006-03 Impact factor: 2.650