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  • Title: [Teeth arrangement of anterior artificial teeth. 1. Age and teeth exposure].
    Author: Ishii K, Maeda Y, Idoji S, Sogo M, Mori T, Okada M, Nokubi T, Okuno Y, Tsutsumi S.
    Journal: Nihon Hotetsu Shika Gakkai Zasshi; 1990 Apr; 34(2):402-7. PubMed ID: 2134794.
    Abstract:
    In selecting and arranging anterior artificial teeth for edentulous patients, it is necessary to consider their sex, personality, age and other factors. The relation of upper and lower lip lines to incisal edge has been one of the standards for the selection and the arrangement of anterior artificial teeth. The purpose of this report was to establish and to evaluate decision bases for the selection and arrangement. We recorded and measured the exposure rate of anterior natural teeth (48 men, 46 women) during function, such as smile, pronunciation, by means of the image analysis. Following results were obtained. 1. As the age of patients increased, upper anterior teeth appeared less than lower's. 2. Differences in exposure ratio between upper and lower teeth were found more remarkable in smiling rather than in pronunciation.
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