Risk Indicators Affecting the Survival of the Mandibular First Molar Adjacent to an Implant at the Mandibular Second Molar Site: A Retrospective Study.

Autor: Park WB; Department of Periodontology, School of Dentistry, Kyung Hee University, Seoul 02447, Korea.; Private Practice in Periodontics and Implant Dentistry, Seoul 02787, Korea., Kwon KH; Department of Dentistry, Division of Prosthodontics, Hanyang University Medical Center, Seoul 04763, Korea., Hwang KG; Department of Dentistry, Division of Oral & Maxillofacial Surgery, College of Medicine, Hanyang University, Seoul 04763, Korea., Han JY; Department of Dentistry, Division of Periodontology, College of Medicine, Hanyang University, Seoul 04763, Korea.
Jazyk: angličtina
Zdroj: Journal of clinical medicine [J Clin Med] 2021 Jun 08; Vol. 10 (12). Date of Electronic Publication: 2021 Jun 08.
DOI: 10.3390/jcm10122543
Abstrakt: This study aimed to compare the survival of mandibular first molars (MnM1s) adjacent to implants placed in mandibular second molar sites (ImM2s) with MnM1s adjacent to mandibular second molars (MnM2s) and to investigate risk indicators affecting the survival of MnM1s adjacent to ImM2s. A total of 144 patients who had MnM1s adjacent to ImM2s and MnM1s adjacent to MnM2s on the contralateral side were included in this study. Clinical variables and radiographic bone levels were evaluated. The survival of MnM1s adjacent to ImM2s or MnM2s was evaluated using a Kaplan-Meier analysis and Cox proportional hazards model. The 5-year cumulative survival rates of MnM1s adjacent to ImM2s and MnM2s were 85% and 95%, respectively. MnM1s adjacent to ImM2s of the internal implant-abutment connection type had higher multivariate hazard ratios (HR) for loss. MnM1s that had antagonists with implant-supported prostheses also had higher HR for loss. The multivariate HR for the loss of MnM1s adjacent to ImM2s with peri-implant mucositis was 3.74 times higher than MnM1s adjacent to healthy ImM2s. This study demonstrated several risk indicators affecting the survival of MnM1s adjacent to ImM2s. It is suggested that supportive periodontal and peri-implant therapy combined with meticulous occlusal adjustment can prolong the survival of MnM1s and ImM2s.
Databáze: MEDLINE
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