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Clin Oral Implants Res ; 35(5): 510-525, 2024 May.
Artigo em Inglês | MEDLINE | ID: mdl-38372450

RESUMO

OBJECTIVES: To evaluate the esthetic outcome, as well as clinical, radiographic, and volumetric tissue alterations 1 year after immediate implant placement (IIP) with connective tissue grafting (CTG) versus dual-zone concept (DZ) at sites with thin labial bone in the esthetic zone. MATERIALS AND METHODS: This randomized clinical trial included 30 patients treated with IIP simultaneous with either CTG or DZ (n = 15 each). Pink esthetic score (PES) was assessed 6 months after crown placement as the primary outcome. Amount of bone labial to the implant, labio-palatal ridge reduction, and crestal bone changes were measured via CBCT after 1 year. Volumetric analysis of linear labial soft tissue contour, interdental, and mid-facial soft tissue level changes, and total volume loss (mm3) were measured after 1 year. RESULTS: Similar PES was observed in the CTG (12.53 ± 1.13) and DZ (12.13 ± 1.55) groups, with no significant difference (p = 0.42). Likewise, there were no statistically significant differences found between the two groups in labio-palatal bone reduction (mm&%), interdental papillae, and mid-facial gingival levels (p > 0.05). However, the mean vertical crestal bone changes in the CTG and DZ groups were -1.1 ± 0.6 mm and 0.2 ± 1.0 mm, respectively, with a statistically significant difference (p = 0.0002). Moreover, CTG revealed less linear and total volume (mm3) loss in the labial soft tissue which was statistically significant compared to DZ (p = 0.007). CONCLUSION: Both groups demonstrated the same PES, nevertheless, volumetric analysis revealed twice total labial volume loss in DZ compared to CTG. It might be concluded that the use of CTG with IIP caused less horizontal reduction in the supra-implant complex compared to the DZ.


Assuntos
Tomografia Computadorizada de Feixe Cônico , Tecido Conjuntivo , Estética Dentária , Carga Imediata em Implante Dentário , Maxila , Humanos , Feminino , Masculino , Maxila/cirurgia , Maxila/diagnóstico por imagem , Tecido Conjuntivo/transplante , Pessoa de Meia-Idade , Adulto , Carga Imediata em Implante Dentário/métodos , Resultado do Tratamento
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