임플란트 주위염에서 비수술적 및 수술적 치료가 변연골 변화에 미치는 영향: 후향적 연구 = Effects of Non-Surgical and Surgical Treatment on Marginal Bone Changes in Peri-Implantitis: A Retrospective Study

다국어 초록 (Multilingual Abstract)

Effects of Non-Surgical and Surgical Treatment on Marginal Bone Changes in Peri-Implantitis: A Retrospective Study Park Sungha Advisor: Prof. Sang-Joun Yu, D.D.S, Ph D. Department of Dentistry Graduate School of Chosun University
I. Introduction
Peri-implantitis is an inflammatory disease characterized by progressive bone loss around dental implants and may ultimately lead to implant failure if left untreated. Although both surgical and non-surgical treatment approaches have been proposed, their radiographic regenerative outcomes remain incompletely understood.
II. Purpose
The aim of this study was to compare radiographic bone fill following surgical and non-surgical treatment of peri-implant defects associated with peri-implantitis and to identify factors associated with radiographic bone regeneration.
III. Materials and Methods
This retrospective study included peri-implantitis cases treated at Chosun University Dental Hospital between 2018 and 2022. Only implants classified as Questionable according to the Decker classification and exhibiting Monje Class 1B, 1C, 3B, or 3C defects were included. Implants with an emergence angle of ≥30° were excluded. Radiographic bone fill was assessed using panoramic radiographs obtained approximately 25 months after treatment. Bone fill outcomes were compared between the non-surgical (n = 17) and surgical (n = 19) groups. In addition, subgroup analyses and multivariable linear regression analyses were performed to identify factors associated with bone fill in the surgical group.
IV. Results
The surgical group demonstrated significantly greater radiographic bone fill than the non-surgical group. Bone fill was 0.74 ± 1.39 mm in the surgical group and − 0.75 ± 1.45 mm in the non-surgical group (p = 0.002). Bone fill percentage was also significantly higher in the surgical group (7.14 ± 14.06%) than in the non-surgical group (−7.50 ± 14.37%) (p = 0.003). In subgroup analyses, membrane use showed a trend toward greater bone fill, although statistical significance was not reached (p = 0.054). Multivariable linear regression analysis revealed that membrane use was significantly associated with increased bone fill percentage (β = 26.927, p = 0.014), whereas bone grafting, enamel matrix derivative use, Ti-brush application, implantoplasty, tetracycline use, and initial defect depth were not significantly associated with bone fill.
V. Conclusions
Within the limitations of this retrospective study, surgical treatment resulted in superior radiographic bone fill compared with non-surgical treatment in peri-implantitis cases with defect configurations favorable for regenerative therapy. In addition, membrane use may contribute to improved bone regeneration following surgical treatment. Further prospective studies with larger sample sizes and standardized treatment protocols are warranted to validate these findings.

목차 (Table of Contents)

• I. Introduction 1
• II. Materials and Methods 2
• 1. 연구대상 2
• 2. 치료방법 4
• 3. 방사선학적 평가 4
• 4. 통계분석 5
• III. Results 5
• 1. 연구대상자의 특성 6
• 2. 수술적 처치군에서 치료방법 6
• 3. 비수술적 처치군에서 치료방법 6
• 4. 방사선학적 골 충전량 7
• 5. 수술군에서 보조술식의 영향 9
• 6. 수술군에서 초기 결손 깊이의 영향 10
• 7. 수술군에서 골 충전 예측 요인에 대한 다변량 선형 회귀분석 11
• IV. Discussion 12
• V. Conclusion 14
• References 15