Surgical crown lengthening: a 12-month study - radiographic results

• Autor(a) principal: Diniz, Daniela Eleutério
• Data de Publicação: 2007
• Outros Autores: Okuda, Kalizia Marcela, Fonseca, Clarissa Ribeiro, Gonzalez, Marly Kimie Sonohara, Greghi, Sebastião Luiz Aguiar, Valle, Accácio Lins do, Lauris, José Roberto Pereira
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Journal of applied oral science (Online)
• DOI: 10.1590/S1678-77572007000400008
• Texto Completo: https://www.revistas.usp.br/jaos/article/view/3477
• topic: Oral surgical procedures; Wound healing; Bitewing radiography

OBJECTIVE: The purpose of this study was to perform a radiographic follow-up evaluation after a 12-month healing period, following crown lengthening surgery. MATERIAL AND METHODS: Twenty-three periodontally healthy subjects (mean age 32.5 years) that required crown lengthening surgery in premolars were recruited. In a total of 30 premolars, full thickness flaps, osseous resection, and flap suturing were performed. The restorative margin was defined in the pre-surgical phase and maintained unaltered during the healing period, serving as a reference point. Standardized bitewing radiographs were taken before and after osseous reduction, and at 2, 3, 6, and 12-month healing periods. RESULTS: Intact lamina dura was observed at both mesial and distal alveolar crests only from the 3rd month. At 12-months, all alveolar crests presented lamina dura. The overall mean distance from the restorative margin to the alveolar crest achieved after osseous resection was 3.28±0.87 mm at mesial and 2.81±0.51 mm at distal sites. No significant radiographic changes in the bone crest were observed during a 12-month healing period. CONCLUSION: The findings of this study suggest that the radiographic proximal bone level observed on bitewing radiographs following crown lengthening surgery can be used as a reference to predict the future level of the healed alveolar crest.