Sellen P, Jagger D, Harrison A
Bristol Dental Hospital and School.
Prim Dent Care. 1998 Apr;5(2):55-60.
This study evaluated the inter-relationship between five aesthetic factors: the form of the face, tooth and arch, maxillary anterior tooth arrangement and palatal contour. An assessment was made to determine if correlation was sufficient to recommend their use as reliable aesthetic factors for the selection of suitable tooth moulds for edentulous and partially edentulous patients. This would enable the clinician to select a tooth mould at the chairside, based on an evaluation of the individual's aesthetic factors where, for example, the maxillary incisors should have the same outline shape as the individual's face. A computer program was developed incorporating images of the factors taken from 50 Caucasian adults aged 20-31 years and assessment of correlation made by outline superimposition and classification. The objectives were to design a computer program to analyse, classify and evaluate correlation between the five factors in each case by superimposition and classification. Correlation by superimposition recorded some concurrence between forms. The findings of this study suggest that there was insufficient correlation to support Nelson's 'Aesthetic Triangle', or Williams' face form/tooth theory. The incidence of correlation by classification between anterior tooth arrangement and arch form was sufficiently high to suggest their value as an aesthetic aid.
面部形态、牙齿与牙弓、上颌前牙排列以及腭部轮廓。进行了一项评估，以确定这些因素之间的相关性是否足以推荐将其用作可靠的美学因素，从而为无牙和部分无牙患者选择合适的牙模。这将使临床医生能够在椅旁根据对个体美学因素的评估来选择牙模，例如，上颌切牙应与个体面部具有相同的轮廓形状。开发了一个计算机程序，该程序纳入了从50名年龄在20至31岁的白种成年人身上获取的这些因素的图像，并通过轮廓叠加和分类对相关性进行评估。目标是设计一个计算机程序，通过叠加和分类来分析、分类并评估每个病例中五个因素之间的相关性。通过叠加得出的相关性记录了形态之间的一些一致性。本研究结果表明，相关性不足以支持尼尔森的“美学三角”或威廉姆斯的面部形态/牙齿理论。前牙排列与牙弓形态之间通过分类得出的相关性发生率足够高，表明它们作为美学辅助手段的价值。
