Thai dentistsû preferences of maxillary anterior tooth width proportions and width to height ratios

TL;DRAbstract

Objective The purpose of this survey study was to provide the information about the generally accepted standards for designing smiles using tooth proportion relationships for Thai dentists. Materials and methods A smile image was made and adjusted by a computer image manipulation program. The teeth were adjusted according to three different ratios. They are as follows: normal (78%), tall (71%) and short (87%) teeth. Each ratio was further conformed according to three proportions. The three respective proportions are Golden, 70RED and Preston proportion for each ratio. Eighteen survey sets of two different smiles were constructed. Two-hundred and forty-two Thai dentists were asked to decide which smile in each set is more preferable. The results were analyzed with binomial test and Fisherus Exact test. Results In normal and tall width to height ratio teeth, no significant difference was found in the preferred tooth width proportion. For the survey of short†teeth, the golden proportion w

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