Primary Dentition Analysis: Exploring a Hidden Approach

Abstract

Background: Accurate prediction of the mesiodistal widths (MDWs) of canines and premolars in children with primary dentition facilitates interception of malocclusion at an early age. Boston University (BU) approach is one, i.e., based on primary teeth for predicting canine and premolar dimensions.Aim: To predict the canine and premolar dimensions, in the contemporary population, using BU approach and compare with the values obtained using Tanaka-Johnston (T/J) approach.Design: Children in the age range of 7-11 years with presence of all permanent mandibular incisors and primary maxillary and mandibular canines and first molars were included in the study. Those with interproximal caries or restorations, abnormalities in shape or size and history of orthodontic treatment were excluded. Impressions of both arches were made using irreversible hydrocolloid and poured with dental stone. The MDWs of the required teeth were measured on the models using electronic digital vernier caliper from which widths of permanent canines and premolars were predicted using both T/J and BU approaches.Results: Statistically significant (p = 0.00) positive correlation (r = 0.52-0.55) was observed between T/J and BU approaches. A statistically significant (p = 0.00) strong positive correlation (r = 0.72-0.77) was observed among girls, whereas boys showed a statistically nonsignificant weak positive correlation (r=0.17-0.42) based on gender.Conclusion: Boston University approach can be further studied prospectively to make it possible as a prediction method of permanent tooth dimensions for children in primary dentition stage.How to cite this article: Nuvvula S, Vanjari K, Kamatham R, Gaddam KR. Primary Dentition Analysis: Exploring a Hidden Approach. Int J Clin Pediatr Dent 2016;9(1):1-4.

Applicability of Different Mixed Dentition Analyses among Children Aged 11–13 Years in Chennai Population

“…In this study, it was found that there was a statistical significance between the measurements of the mesiodistal widths of males and females. This is in line with a study conducted by Grover et al and Nuvvula et al 6 , 27 In this study, it was found that Tanaka–Johnston's method tended to overestimate the mesiodistal widths of both the maxilla and the mandible for females as it had statistical significance with a p value less than 0.001. This is similar to a study conducted by Grover et al, wherein both the maxillary and mandibular arches in the females had values higher predicted values than the actual values.…”

New regression equations for mixed dentition space analysis in Nepalese mongoloids

“…Prediction of width of permanent canines and premolars can be done as early as in primary dentition using Boston University approach but the clinical implication of this prediction is undermined by the changes in arch dimensions, tooth position and inclination. [ 7 ]…”