Prediction of changes in the arch dimensions after orthodontic treatment by a mathematical equation
Journal Title: IOSR Journal of Dental and Medical Sciences (IOSR-JDMS) - Year 2018, Vol 17, Issue 12
Abstract
Arch perimeter (AP), inter-canine width (ICW) and inter-molar width(IMW) are essential for diagnosis and treatment planning and are closely related factors in orthodontics. The aim of the present study was to determinethe relationship between arch perimeter (AP), inter-canine width (ICW) and inter-molar width (IMW); and prediction of post-treatment arch perimeter based on pretreatment arch perimeter measurements. The sample included 20 sets of good quality plaster models of 10 males and 10 females with the mean age of 18years (11-26years); each of Angle’s Class I bimaxillary protrusion and Class II division 1 malocclusion patients who were treated in MGV’S KBH Dental College and Hospital, Nashik. Pre-treatment &Post treatment models for maxillary and mandibular arches weremade. There was a correlation between arch perimeter and ICW (AP = 1.39 ICW + 23.9) for class I bimaxillary protrusion, (AP = 0.4 ICW + 60.03) for class II division 1,similar regression equations were established for arch perimeter and IMW both pre-treatment and posttreatment and also between pre-treatment arch perimeter and post-treatment arch perimeter.Correlation makes it possible to predict the size of one variable by knowing the size of other. Changing the arch width is one of the reasons for relapse. Obtaining the regression equation can be helpful for predicting the change in arch perimeter after orthodontic treatment and thus would be helpful in orthodontic treatment planning.
Authors and Affiliations
Utkarsh Gandhi, Kunal Shah, Shivpriya Aher, Nitin Gulve, Amit Nehete
Keywords
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- EP ID EP423860
- DOI 10.9790/0853-1712071518.
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