Survival analysis of implants after surgical treatment of peri-implantitis based on bone loss severity and surgical technique: a retrospective study
Abstract Background Few trials have compared the results of surgical treatment for peri-implantitis based on severity of peri-implantitis and surgical method. This study investigated the survival rate of implants based on type of surgical method used and initial severity of peri-implantitis. Classif...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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BMC
2023-05-01
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| Series: | BMC Oral Health |
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| Online Access: | https://doi.org/10.1186/s12903-023-02981-5 |
| _version_ | 1797817762726281216 |
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| author | Sooshin Hwang Hee-min Lee Pil-Young Yun Young-Kyun Kim |
| author_facet | Sooshin Hwang Hee-min Lee Pil-Young Yun Young-Kyun Kim |
| author_sort | Sooshin Hwang |
| collection | DOAJ |
| description | Abstract Background Few trials have compared the results of surgical treatment for peri-implantitis based on severity of peri-implantitis and surgical method. This study investigated the survival rate of implants based on type of surgical method used and initial severity of peri-implantitis. Classification of severity was determined based on bone loss rate relative to fixture length. Methods Medical records of patients who underwent peri-implantitis surgery from July 2003 to April 2021 were identified. Classification of peri-implantitis was divided into 3 groups (stage 1: bone loss < 25% (of fixture length), stage 2: 25% < bone loss < 50%, stage 3: bone loss > 50%) and performance of resective or regenerative surgery was investigated. Kaplan-Meier survival curves and Cox hazards proportional models were used to analyze the cumulative survival rate of implants. Median survival time, predicted mean survival time, hazard ratio (HR), and 95% confidence interval (CI) were calculated. Results Based on Kaplan-Meier analysis, 89 patients and 227 implants were included, and total median postoperative survival duration was 8.96 years. Cumulative survival rates for stage 1, 2, and 3 were 70.7%, 48.9%, and 21.3%, respectively. The mean survival time for implants in stage 1, 2, and 3 was 9.95 years, 7.96 years, and 5.67 years, respectively, with statistically significant difference (log-rank p-value < 0.001). HRs for stage 2 and stage 3 were 2.25 and 4.59, respectively, with stage 1 as reference. Significant difference was not found in survival time between resective and regenerative surgery groups in any peri-implantitis stage. Conclusions The initial bone loss rate relative to the fixture length significantly correlated with the outcome after peri-implantitis surgery, demonstrating a notable difference in the long-term survival rate. Difference was not found between resective surgery and regenerative surgery in implant survival time. Bone loss rate could be utilized as a reliable diagnostic tool for evaluating prognosis after surgical treatment, regardless of surgical method used. Trial registration Retrospectively registered. (KCT0008225) |
| first_indexed | 2024-03-13T08:58:15Z |
| format | Article |
| id | doaj.art-3dd9b9553eb241a083c55ab80586aaa1 |
| institution | Directory Open Access Journal |
| issn | 1472-6831 |
| language | English |
| last_indexed | 2024-03-13T08:58:15Z |
| publishDate | 2023-05-01 |
| publisher | BMC |
| record_format | Article |
| series | BMC Oral Health |
| spelling | doaj.art-3dd9b9553eb241a083c55ab80586aaa12023-05-28T11:29:18ZengBMCBMC Oral Health1472-68312023-05-0123111010.1186/s12903-023-02981-5Survival analysis of implants after surgical treatment of peri-implantitis based on bone loss severity and surgical technique: a retrospective studySooshin Hwang0Hee-min Lee1Pil-Young Yun2Young-Kyun Kim3Department of Oral and Maxillofacial Surgery, Section of Dentistry, Seoul National University Bundang HospitalDepartment of Oral and Maxillofacial Surgery, Section of Dentistry, Seoul National University Bundang HospitalDepartment of Oral and Maxillofacial Surgery, Section of Dentistry, Seoul National University Bundang HospitalDepartment of Oral and Maxillofacial Surgery, Section of Dentistry, Seoul National University Bundang HospitalAbstract Background Few trials have compared the results of surgical treatment for peri-implantitis based on severity of peri-implantitis and surgical method. This study investigated the survival rate of implants based on type of surgical method used and initial severity of peri-implantitis. Classification of severity was determined based on bone loss rate relative to fixture length. Methods Medical records of patients who underwent peri-implantitis surgery from July 2003 to April 2021 were identified. Classification of peri-implantitis was divided into 3 groups (stage 1: bone loss < 25% (of fixture length), stage 2: 25% < bone loss < 50%, stage 3: bone loss > 50%) and performance of resective or regenerative surgery was investigated. Kaplan-Meier survival curves and Cox hazards proportional models were used to analyze the cumulative survival rate of implants. Median survival time, predicted mean survival time, hazard ratio (HR), and 95% confidence interval (CI) were calculated. Results Based on Kaplan-Meier analysis, 89 patients and 227 implants were included, and total median postoperative survival duration was 8.96 years. Cumulative survival rates for stage 1, 2, and 3 were 70.7%, 48.9%, and 21.3%, respectively. The mean survival time for implants in stage 1, 2, and 3 was 9.95 years, 7.96 years, and 5.67 years, respectively, with statistically significant difference (log-rank p-value < 0.001). HRs for stage 2 and stage 3 were 2.25 and 4.59, respectively, with stage 1 as reference. Significant difference was not found in survival time between resective and regenerative surgery groups in any peri-implantitis stage. Conclusions The initial bone loss rate relative to the fixture length significantly correlated with the outcome after peri-implantitis surgery, demonstrating a notable difference in the long-term survival rate. Difference was not found between resective surgery and regenerative surgery in implant survival time. Bone loss rate could be utilized as a reliable diagnostic tool for evaluating prognosis after surgical treatment, regardless of surgical method used. Trial registration Retrospectively registered. (KCT0008225)https://doi.org/10.1186/s12903-023-02981-5Peri-implantitisSurgical treatmentBone loss rateSurgical methodSurvival analysis |
| spellingShingle | Sooshin Hwang Hee-min Lee Pil-Young Yun Young-Kyun Kim Survival analysis of implants after surgical treatment of peri-implantitis based on bone loss severity and surgical technique: a retrospective study BMC Oral Health Peri-implantitis Surgical treatment Bone loss rate Surgical method Survival analysis |
| title | Survival analysis of implants after surgical treatment of peri-implantitis based on bone loss severity and surgical technique: a retrospective study |
| title_full | Survival analysis of implants after surgical treatment of peri-implantitis based on bone loss severity and surgical technique: a retrospective study |
| title_fullStr | Survival analysis of implants after surgical treatment of peri-implantitis based on bone loss severity and surgical technique: a retrospective study |
| title_full_unstemmed | Survival analysis of implants after surgical treatment of peri-implantitis based on bone loss severity and surgical technique: a retrospective study |
| title_short | Survival analysis of implants after surgical treatment of peri-implantitis based on bone loss severity and surgical technique: a retrospective study |
| title_sort | survival analysis of implants after surgical treatment of peri implantitis based on bone loss severity and surgical technique a retrospective study |
| topic | Peri-implantitis Surgical treatment Bone loss rate Surgical method Survival analysis |
| url | https://doi.org/10.1186/s12903-023-02981-5 |
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