Relationship between the shape of the upper central incisors and the facial contour in dental students. Lima. Peru.
Abstract
Objective: To determine if there is a relationship between the shape of the face and the shape of the right upper central incisor in accordance with "The law of harmony" proposed by Williams. Materials and methods: this study was observational analytical cross-type, we selected a sample of 124 students of both sexes between 17 and 28 years of age, which was determined facial biotype and the shape of the right upper central incisor, by means of a direct method and other photographic. By the direct method was clinically evaluated the height and the facial width as well as also the proximal contours of the incisor using a Vernier digital and by the photographic method were strokes the images taken using the software of Adobe Photoshop 5.0. Results: For the direct method the relationship, or correlation between the shape of the face and the shape of the incisor was a 43.5% sample (n=124) (p=0.006<0.05 IC 95%). By the photographic method concordance between the shape of the face and the shape of the incisor or the relationship was in a 41.1% sample (n=124) (p=0.037<0.05 IC 95%). Facial biotype more frequently with the direct and photographic method was the dolichofacial in a 61.3% and 71% respectively. The shape of the tooth more frequently with the direct and photographic method was the ovoid on a 55.6% and 51.6% respectively. Conclusion: The results do not confirm "The law of harmony" proposed by Williams, therefore when choosing the most suitable anterior tooth, should be considered experience and the critical sense of professional as well as the wishes of the patient in order to achieve a good aesthetic result.
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Keywords
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