Analysis of dental esthetic proportions in a Spanish population sample

Abstract

Purpose:The present study aimed to analyze in a Spanish population sample the compliance of the anterior maxillary teeth to the dental esthetic proportions described in the literature. Methods: Photographs of the smiles of 78 individuals were calibrated and digitally analyzed considering the following proportions: golden proportion (GP), recurring esthetic dental (RED), golden percentage (GPG), Preston's proportion and Modified golden percentage (MGPG). For statistical analysis, the t-test of an independent sample was applied, and compliance percentages for each standard were recorded. Results: The existence of RED 70% or 80% has not been registered. The percentages of compliance with GP were within a range between 0% and 16%. The mean tooth width ratios were adjusted to the values described by Preston (P > 0.05), but the compliance percentages were low (3.33-25%). GPG only presented high percentages of compliance in the lateral incisors (53.33-62.5%). MGPG showed the highest percentages of compliance (50-68%). Conclusion: After analyzing a Spanish population sample using smile photographs for the first time, GP, RED, GPG and Preston's proportion standards are not fulfilled and therefore, not suitable for treatments that seek a smile that reproduces natural principles. However, the values designated by MGPG with a deviation of ±1% are largely applicable for treatments that aim for a natural smile.

The influence of different tooth proportions obtained using digital smile design on the perception of smile esthetics

“…There have been studies investigating the presence of the P in the natural upper anterior teeth of different populations. The P was not found in studies conducted in England, 45 India 50 and Spain 46 . However, it has been reported that the P, not the RED proportion, can be used in the rehabilitation of anterior maxillary teeth in Portuguese individuals 51 .…”

“…43 However, this proportion is not frequently found in the different populations studied. [44][45][46][47][48] No GPR was detected in the anterior teeth of a population of Turks. 48 According to a study conducted in an Indian population, RED was more common in smiles perceived as esthetically pleasing than GPR.…”

Anterior Upper Teeth Golden Proportion Analysis with Millimetric Templates: An Invention Developed at Londrina State University

“…Studies have found the absence of the golden proportion in diferent populations [9,11,12,[16][17][18], as they did not consider the distal portion of the canine in the frontal analysis of the smile. In the invention, canine teeth are analyzed according to their position in the arch and anatomical condition, being divided into a mesial segment and a distal segment.…”

Avaliação da Satisfação com a Estética da Face e do Sorriso e Percepção sobre Procedimentos para Harmonização Orofacial

“…Este tratamento objetiva recobrir e mascarar defeitos de coloração, reanatomizar elementos dentários, promover fechamento de diastemas e aumentar o tamanho dos dentes, de maneira segura e previsível 9,22 estética, mimetização do esmalte, além de requerer um menor desgaste da estrutura dentária. Tais atributos permitem a realização de tratamentos estético-reabilitadores mais efetivos e conservadores [23][24][25] . Embora ainda desconhecida por muitos, as lentes de contato dentais vêm ganhando espaço na mídia ao despertar o desejo e a curiosidade das pessoas por conhecer e se inteirar mais sobre este, que é um tema comumente discutido nas rodas de conversas, nos programas de televisão, na mídia impressa e no meio acadêmico.…”