A comparative study to evaluate the effectiveness of lateral cephalogram and study cast to measure anteroposterior anchorage loss with preadjusted edgewise appliance
Journal Title: IP Indian Journal of Orthodontics and Dentofacial Research - Year 2018, Vol 4, Issue 3
Abstract
Objective Measurement of anchorage loss is an essential part of assessing the orthodontic treatment It can be assessed on the lateral cephalogram or on study models The purpose of the present study is to compare the mean horizontal molar movement or anchorage loss relative to the palatal rugae landmarks on study models with that of cephalometric superimpositions in maximum anchorage cases and to concur whether only one record study casts or cephalogram could suffice for the evaluation of the anchorage lossMaterials and Methods A power analysis was performed to determine the sample size needed to detect a 10mm difference in tooth movement with the effect size of 05 at a confidence level of 90 to consider the dropouts thirty maximum anchorage patients requiring first premolar extraction as part of their treatment plan were selected by consecutive sampling Mean horizontal movement of molars was calculated on lateral cephalogram and study cast records after alignment and levelingStatistical Analysis Paired ttest was performed to compare the mean values of anchorage loss measured on lateral cephalogram and study modelResults The results showed that there was no statistically significant difference in measurement of anteroposterior anchorage loss with either lateral cephalogram or study cast p value 0554 The mean horizontal molar movement measured on lateral cephalogram was 232 with SD of 177 and mean horizontal molar movement measured on study cast was 209 with SD of 122Conclusion The present study shows that the measurement of anchorage loss on study models is equally reliable as that on the lateral cephalogram Thus study models presents as an alternative to the measurement of anteroposterior anchorage lossKeywords Lateral cephalogram study cast Anchorage loss Preadjusted edgewise
Authors and Affiliations
Teena Dodeja, Shweta R Bhat, Aditya Talwar
Keywords
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- EP ID EP514535
- DOI 10.18231/2455-6785.2018.0030
- Views 78
- Downloads 0
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