Clinical performance of two onlay designs for molars after root canal treatment
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- Chen Shujiang
- State Key Laboratory of Oral Diseases, West China School of Stomatology, Sichuan University National Clinical Research Center for Oral Diseases, West China School of Stomatology, Sichuan University Department of Prosthodontics, West China Hospital of Stomatology, Sichuan University
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- Lu Meng
- State Key Laboratory of Oral Diseases, West China School of Stomatology, Sichuan University National Clinical Research Center for Oral Diseases, West China School of Stomatology, Sichuan University Department of Prosthodontics, West China Hospital of Stomatology, Sichuan University
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- Zhu Zhimin
- State Key Laboratory of Oral Diseases, West China School of Stomatology, Sichuan University National Clinical Research Center for Oral Diseases, West China School of Stomatology, Sichuan University Department of Prosthodontics, West China Hospital of Stomatology, Sichuan University
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- Chen Wenchuan
- State Key Laboratory of Oral Diseases, West China School of Stomatology, Sichuan University National Clinical Research Center for Oral Diseases, West China School of Stomatology, Sichuan University Department of Prosthodontics, West China Hospital of Stomatology, Sichuan University
抄録
<p>Purpose: To evaluate the clinical performance of two proposed onlay designs.</p><p>Methods: Molars with occlusal and/or mesial/distal defects after root canal treatment were classified by design into three groups. Onlays without shoulders were the control group (Group C, n = 50). The designed onlays were Group O (n = 50) and the designed mesio-occlusal/disto-occlusal onlays were Group MO/DO (n = 80). All onlays had an occlusal thickness of approximately 1.5-2.0 mm, and the designed onlays had a shoulder depth and width of approximately 1 mm. In Groups C and O, the box-shaped retention was 1.5 mm in depth. The proximal box was connected with a dovetail retention in Group MO/DO. Patients were examined every 6 months and followed for 36 months. Restorations were evaluated by using the modified United States Public Health Service Criteria. Statistical analysis was performed by using Kaplan-Meier analysis, the chi-square test, and Fisher’s exact test.</p><p>Results: No tooth fracture, debonding, secondary caries, or gingivitis was observed in any group. Groups O and MO/DO had satisfactory survival and success rates, and there was no significant difference in performance characteristics among the three groups (P > 0.05).</p><p>Conclusion: The two proposed onlay designs were effective in protecting molars.</p>
収録刊行物
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- Ｊｏｕｒｎａｌ ｏｆ Ｏｒａｌ Ｓｃｉｅｎｃｅ
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Ｊｏｕｒｎａｌ ｏｆ Ｏｒａｌ Ｓｃｉｅｎｃｅ 65 (3), 171-175, 2023
日本大学歯学部