Level Of The Visible Portion Of Maxillary Anterior Teeth At Rest And During Smiling

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Date
2015-03-30
Authors
Osman, Babiker
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UOFK
Abstract
This study was conducted on groups of adult Sudanese dental students to measure the displayed portion of the upper anterior teeth at rest and during posed smile to help determine the correct position of the anterior teeth in an edentulous arch. One hundred males and one hundred females were selected randomly. Their age ranging from 18 – 26 years. All the subjects had normal occlusion and had no history of congenital anomalies, lip trauma, facial surgery or orthodontic treatment. Two photographs were taken for each subject, one at rest position and the other during smile (posed smile). All the measurements were made through the image analysis software (UTHSCSA image tool), except the visible part of the upper left central incisor, which was measured directly on the subject at rest and during smiling using a Boley gauge to adjust the image analysis software. The values from these groups were compared with paired ttest to determine the significance at 0.05 levels. The females displayed more of the maxillary anterior teeth at rest than the males. The males displayed more of the maxillary anterior teeth during smile than females. Males had longer lip than females. The length of maxillary anterior teeth that was visible at rest and smile did not change with increasing age. The prosthodontist should view the dynamics of anterior tooth display in three dimensions in stead of frontal view at rest, speech and posed social smile during the try-in stage.
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99page
Keywords
Level Of The Visible Portion Of Maxillary Anterior Teeth At Rest And During Smiling
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