Determination of the shape of the head in man from the frontal view through a complex quantitative index.
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Biomedical subjects
Publications and source records attributed to R Ralev.
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Observations were carried out--visual and via photos--of 180 subjects (83 males and 97 females) in order to establish the incidence of coincidence between the line of the cutting edges of the upper front teeth with the contours of the base of the nose and the lower lip while smiling. It has been established that the total configuration of the cutting edges is perceived visually as a curved wave-like line, whose arch, in the majority of the cases, does not correspond to the form of the nose but, most often, coincides with the contuour of the lower lip. Attaining of the mentioned harmonious conformity between those two linesis recommended in the working out of aesthetic prosthetic constructions.
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In order to establish the horizontal measurements of the buccal vestibules- an important index for the aesthetic quality of prostheses, a total of 250 subjects, 119 males and 131 females, were measured. The size of the buccal vestibule is calculated as the half of the difference between the size of a smiling mouth and the width of the visible dentition. It has been established that the mean linear measure of the buccal vestibule is 6.5 mm and varies from 5 and 8.5 mm. Its value is directly proportional to the size of the smile and inversely proportional--to the width of the visible dentition; no discrepanciens have established depending on sex and age of the subject.
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