Estimation of New Equation for Triangle Anterior Dental Arch Form in Sub-Race Deutro Malay

Abstract

Each race around the world has a different arch form. Measurement of triangle anterior dental arch, analysis model of Maxilla is essential to support the success of orthodontic treatment. This study aimed to determine the new equation for triangle anterior dental arch form and predict space availability in designing adequate orthodontic treatment planning, especially in Sub-Race Deutro Malay. A cross-sectional study was conducted among the "normal" respondent with normal occlusion, including normal facial profile, overjet, and overbite (no asymmetrical arches). One hundred of Sub-Race Deutro Malay teenagers aged 18-23 years old participated. All respondents having normal occlusion were impressed by hydrocolloid materials and made a model study. Then, the data were analyzed by computerized analysis using Microsoft Excel version 16.0 to predict mathematical formulas.The mean of inter-canine width was 36.44±4.18; midline to canine was 18.29±2.07; central incisive to inter-canine was 14.49±1.75; ratio among central intelligent with inter canine and midline to canine was 0.89±0.90; distal canine to the midline of central incisive was 23.26±2.29; ratio among distal canine with the midline of central incisive and distal canine with the midline of central incisive was 0.89±0.90. This study found a new equation arch form of Sub-Race Deutro Malay and suggested new guidance of the anterior dental arch dimension. So, it is also highlighted that an adequate measurement of dental arch ratio among specific races can facilitate the success of orthodontic and prosthodontic treatment.

Scan Aided Dental Arch Width Prediction via Internationally Recognized Formulas and Indices in a Sample of Kurdish Population/Iraq

“…Therefore, the study also underlined that a correct measurement of the dental arch ratio among particular races can be a precondition for effective case planning and treatment in orthodontics and prosthodontics. This is because the ratio of dental arches can vary significantly from race to race [29].…”