Three‐dimensional stereophotogrammetric analysis of 50 smiles: A study of dento‐facial proportions

Abstract

If the distances from reference points of the face to teeth within a harmonious smile exhibited recurring esthetic proportions, knowledge of such ratios would provide an additional tool for the elaboration of esthetic treatment plans. In addition, this knowledge could provide guidance when planning tooth positions and dental proportions by encouraging consideration of the global nature of the oro-facial sphere.

Evaluation of Dental Golden Ratio in Terms of Facial Esthetics

“…Ceinos et al obtained the ratio of 1.60260.136 "right labial commissure-left labial commissure/distal edge of the right canine-distal edge of the left canine" in their study of dentofacial ratio analysis. 18 In this study, this ratio was found to be 1.66 in males and 1.59 in females, respectively. This ratio can be especially important because the teeth and lips are important components of a smile.…”

“…In a study by Ceinos et al, this ratio was found to be 1.67060.355. 18 Hasanreisoglu et al obtained an average A/C ratio of 1.618 for both genders in groups representing the Turkish population. 8 Nikgoo et al reported that the golden ratio can be used to restore the maxillary central and lateral teeth anesthetically.…”

“…17 Ceinos et al reported that 3D images would be beneficial to examine soft tissues, in addition to hard tissues, as cephalometric. 18 However, Mack reported that using the vertical dimension as the golden ratio indicator may be more useful in precisely measuring both hard and soft tissues. 19 In their study examining the role of golden ratios in the evaluation of facial esthetics, Rossetti et al concluded that the ratios between 3D face distances are not related to attractiveness.…”

Pathologische Zahnwanderung der Frontzähne im parodontal geschädigten Gebiss

“…Orientierungshilfen bei der kieferorthopädischen Behandlung dienen, um ein funktionelles / dentofaziales Gleichgewicht zu erreichen (Ceinos et al 2017).…”

“…Auch zur Veränderung von Weichteilen durch Zahnbewegungen wurden Untersuchungen durchgeführt (Sawyer et al 2009;Kim et al 2014;Galantucci et al 2016;Ceinos et al 2017;Celebi et al 2017;Jang et al 2017;Masoud et al 2017). Die Reproduzierbarkeit des Setzens von definierten anatomischen Punkten, sogenannte landmarks, ist für nachfolgende Auswertungen wichtig.…”