上下顎前歯と顔貌との審美的関係
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概要
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When providing prosthetic treatment for the cases of loss of occlusal height or loss of the anterior teeth, functions and esthetics must be restored. A yardstick in restoration of esthetics is that harmony is established between the upper half and lower half of the face and between the face and dentition. The present author therefore made an investigation to determine to what extent golden proportion can be applied in restoration of facial esthetics. For this investigation, dentulous adult males with individual normal occlusion were used and the lengths and widths between various parts of the face and the widths between various parts of the anterior teeth were measured and examined. The results were as follows : In the lengths of various parts of the face, approximation to golden proportion was found in subnasal point-submental point length and pupil point-lip conjugate point length to pupil point-submental point length, in subnasal point-submental point length and pupil point-lip conjugate point length to pupil point-subnasal point length, in lip conjugate point-submental point length to subnasal point-submental point length, in lip conjugate point-submental point length to subnasal point-submental point length, and in pupil point-lip conjugate point length to lip conjugate point-submental point length. Among the widths of various parts of the face, internal ocular angle width and ala width to right internal ocular angle-left external ocular angle width approximated golden proportion. Significant correlation was found in the former but not in the latter. Among the widths of various parts of the mandibular anterior teeth to those of the maxillary anterior teeth, the width approximated golden proportion in mandibular inter-central-incisor width and mandibular inter-canine-cuspis width to maxillary inter-central-incisor width, in mandibular inter-lateral-incisor width to maxillary inter-canine-cuspis width, and in mandibular inter-canine-cuspis width to maxillary inter-canine width. However, no significant correlation was found. Among the widths of various parts of the maxillary anterior teeth to those of various parts of the face, the width approximated golden proportion in maxillary inter-canine width to right internal ocular angle-left external ocular angle width. Significant correlation also was found.
- 九州歯科学会の論文
- 1988-12-25