Avaliação tomográfica das dimensões anatômicas periodontais e dentais de pacientes com erupção passiva alterada: série de 12 casos

Abstract

Altered Passive Eruption (APE) is a developmental alteration that affects the gingiva and alveolar bone. However, little has been studied about the periodontal and dental dimensions of affected patients. The objective of this study was to evaluate periodontal and dental measures of individuals with APE, through tomographic evaluation. For this, 12 participants diagnosed with APE (age 23.3 ± 4.2 years) were selected, totaling 72 maxillary anterior teeth. The average height of the clinical crown of the Central Incisors (CI) was 9.2±1.0mm, of the Lateral Incisors (LI) was 7.5±0.7mm, and of the Canines (Can) was 8.6±0, 8mm; the height of the anatomical crowns was 11.0±1.0 mm, 9.8±0.7mm, and 9.9±1.0 mm; the length of the teeth was 23.0±1.8mm, 21.9±1.8mm, and 26.5±2.5mm, respectively; the distance from the cemento-enamel junction (CEJ) to the bone crest was 1.2±0.9mm, 1.4±0.7mm, 1.2±0.8mm. Buccal bone plate thickness was evaluated at different apical-coronary levels (1mm, 2mm, 4mm, and 6mm) using the CEJ as a reference; no differences were detected when comparing the dental groups. Grouping CI, LI and Can, the mean bone thickness at different levels was, respectively, 0.7±0.5mm, 0.9±0.6mm, 0.9±0.9mm, and 0.8±0. 9mm. Considering the LI, the bone thickness increased in the apical direction, reaching the apex at 4mm from the CEJ, and reduced at 6mm (p=0.01). In Can, the highest value was observed 2mm apical to the CEJ, and following the same trend, it reduced at the measurement point 6mm from the CEJ (p=0.01). In the APE patients studied, the clinical crowns were short, and the supracrestal insertion space reduced.