Pontevedra Paula, Lopez-Suarez Carlos, Pelaez Jesus, Garcia-Serdio Sara, Suarez Maria J
Department of Conservative Dentistry and Buccofacial Prostheses, Faculty of Odontology, University Complutense of Madrid, Madrid, Spain.
J Prosthodont. 2021 Apr;30(4):298-304. doi: 10.1111/jopr.13251. Epub 2020 Sep 10.
To evaluate the clinical performance and survival rate of posterior monolithic zirconia fixed partial dentures over a 2-year period.
A total of 20 patients, requiring 20 posterior fixed partial dentures were included in the study. Tooth preparations were scanned, and restorations were milled and cemented with a resin cement. The restorations were assessed for the quality of the surface and the color, anatomical form and marginal integrity. Periodontal status was assessed by determining the plaque index, gingival index, pocket depth, and margin index of the abutment teeth. Data were statistically analyzed using the Friedman and the Wilcoxon signed-rank tests with the Bonferroni correction.
The survival rate at 2 years was 100%, and no biological or technical complications were observed. All restorations were assessed as satisfactory. The results obtained for gingival index and plaque index were better at 2 years follow-up, than at baseline. The margin index remained stable throughout the follow-up period. No differences in periodontal parameters were observed between abutment and control teeth.
The high survival rate after 2 years suggest that monolithic zirconia may be an acceptable alternative to metal-ceramic and veneered zirconia restorations in the posterior region. Additional long-term, controlled studies are necessary to confirm the results.
评估后牙整体式氧化锆固定局部义齿在2年期间的临床性能和存活率。
本研究共纳入20例需要20副后牙固定局部义齿的患者。对牙体预备进行扫描，用树脂粘结剂研磨并粘结修复体。评估修复体的表面质量、颜色、解剖形态和边缘完整性。通过测定基牙的菌斑指数、牙龈指数、牙周袋深度和边缘指数来评估牙周状况。使用Friedman检验和Wilcoxon符号秩检验并进行Bonferroni校正对数据进行统计学分析。
2年时的存活率为100%，未观察到生物学或技术并发症。所有修复体均被评估为满意。在2年随访时，牙龈指数和菌斑指数的结果比基线时更好。边缘指数在整个随访期间保持稳定。基牙和对照牙之间未观察到牙周参数的差异。
2年后的高存活率表明，整体式氧化锆在后牙区域可能是金属陶瓷和贴面氧化锆修复体的可接受替代方案。需要进一步的长期对照研究来证实这些结果。
