Fenótipo gengival

: estudo radiográfico e fotográfico das dimensões da unidade dento-gengival : estudo piloto

Abstract

INTRODUCTION: The attractiveness of the smile has a big impact on social and professional life of individuals. The dento-gingival unit is a key factor to determine the aesthetic of the anterior sector. However, for this to occur, it is necessary to preserve the biological space included in this unit. During the treatment planning, it is essential to consider the gingival phenotype and how it may influence the results. PURPOSE: The aim of this study is to characterize the gingival phenotype of a sample students from Portuguese Catholic University, through the analysis of digital radiographs and photographs. METHODS: 50 standardized photographs and radiographs were taken in 50 patients (13 men and 37 women) with an average of 23 years old. The photographs were assessed: (1) Crown Form; (2) Height of Keratinized Gingiva; (3) Papilla Height; (4) Gingival Angle. Through radiographs was possible to analyze: (A) Thickness of Free Gingiva (G1 and G2); (B) Thickness of Gingiva in the Supracrestal Attachment (G3, G4 and G5); (C) Thickness of Attached Gingiva (G6); (D) Thickness of Alveolar Bone; (E) Distance from Amelo-Cementum line to the Alveolar Crest (AC-CA Distance); (F) Distance from Amelo-Cementum line to the Free Gingival Margin (AC-MG Distance). Statistical analysis was performed using Kolmogorov-Smirnov test, to check if the distribution was normal, Student t test, to compare variables distributions according to gender and Pearson's correlation, to study the correlation between variables. RESULTS For p-value < 0,01, the correlation between Papilla Height and Gingival Angle is one of the strongest (r=-0,734), obtaining, for Papilla Height, higher values for men and for Gingival Angle, higher values for women. The correlation between Crown Form and Thickness of Attached Gingiva (G6), shows no values with statistical significance (r=-0,815). CONCLUSION: The most statistically significant correlations are: (1) Papilla Height and Gingival Angle; (2) Thickness of Free Gingiva (G1) and Thickness of Free Gingiva (G2); (3) Papilla Height and AC-MG distance. By gender, there is a strong association between: (A) Thickness of Attached Gingiva and male gender; (B) Thickness of Alveolar Bone and male gender.

Date of Award	2014
Original language	Portuguese
Awarding Institution	Universidade Católica Portuguesa
Supervisor	Tiago Marques (Supervisor) & Filipe Miguel Araújo (Co-Supervisor)