Morphometric relationships between tooth and face shapes

Journal of Oral Rehabilitation
H-B LindemannP Pfeiffer

Abstract

The shape of a patient's face is commonly used as a reference to select the shape of the maxillary central incisors in edentulous patients. The validity of this relationship has not been proved. The objective of this clinical study was to determine whether a relationship exists between maxillary central incisors and face shapes. Casts were made of the maxillas of 50 men and 50 women. A standardized digital photographic procedure was used to record frontal views of each subject's face and of the maxillary central incisors of the dental casts. The shapes of the maxillary central incisors were compared with the face forms. Shape matches were evaluated according to their Hausdorff distance (HDD). The function h(A,B) is called the directed HDD from shape A to shape B (this function is not a true distance). It reflects the distance of the point of shape A that is farthest from any point of shape B and vice versa. The similarity of both shapes is given as a non-negative number. The value 0.0 indicates that the figures are identical (after scaling and shifting). Higher values indicate that shapes differ more substantially. Significant differences on the 5% level were calculated using the non-parametric Mann-Whitney U and Kruskal-Wallis...Continue Reading

Citations

Sep 28, 2010·International Journal of Dentistry·Felipe de Oliveira FariasJosé Roberto Zorzatto
Aug 9, 2011·The Journal of Prosthetic Dentistry·Juliana BrunettoClaudia A Maziero Volpato
Apr 20, 2016·Journal of Dentistry·Ahmed HussainPranay Sharma
Sep 30, 2017·Journal of Esthetic and Restorative Dentistry : Official Publication of the American Academy of Esthetic Dentistry ... [et Al.]·Eduardo MahnCamila S Sampaio

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