Ebadian Behnaz, Azadbakht Kamran, Shirani Mohammadjavad
Dental Implants Research Centre, Department of Prosthodontics, School of Dentistry, Isfahan University of Medical Sciences, Isfahan, Iran.
Department of Prosthodontics, Dentistry, Lorestan University of Medical Sciences, Khorramabad, Iran.
J Oral Implantol. 2020 Jun 1;46(3):227-234. doi: 10.1563/aaid-joi-D-19-00030.
Implant overdentures increase retention, stability, support, and subsequently comfort and patient satisfaction with removable dentures. This study aimed to investigate the correlation of clinical outcomes (marginal bone loss, probing depth, and patient satisfaction) with different prosthetic aspects of mandibular implant overdentures. Seventy-four implant overdenture wearers who had received their overdentures between 1 to 5 years ago were selected using simple cluster sampling. The data investigated included mucosal health of the mouth, condition of peri-implant tissues, marginal bone loss (MBL), and patient satisfaction. The relationship of MBL and probing depth (PD) with independent variables was assessed by Pearson and Spearman's rho correlation coefficients. The comparisons of MBL, PD, patient satisfaction, and tissue irritation among different states of independent variables were done by analysis of covariance, Tukey and Tamhane post-tests, and chi-square tests (α = 0.05). A total of 186 implants were evaluated. The mean ages of participants and overdentures were 61.62 ± 9.28 (year) and 38.45 ± 16.64 (month), respectively. The survival rate and success rate were calculated to be 100% and 97.8%, respectively. Higher width of attached gingiva was correlated with less PD significantly (P = .006). Gingival index (P < .001) and plaque index (P = .006) were correlated with PD positively. Mean MBL for those who needed matrix/patrix adjustment was significantly higher than that of those who did not need it (P = .025). Taking into account our small sample size, the results of this study suggest that healthy peri-implant mucosa is significantly correlated with the presence of attached gingiva and appropriate oral health care. Furthermore, patients receiving implant overdentures should be informed about the importance of regular recalls.
种植覆盖义齿可增强固位、稳定性及支持力，进而提高可摘义齿的舒适度和患者满意度。本研究旨在探讨下颌种植覆盖义齿不同修复方面与临床结果（边缘骨吸收、探诊深度及患者满意度）之间的相关性。采用简单整群抽样法选取了74名在1至5年前佩戴种植覆盖义齿的患者。调查的数据包括口腔黏膜健康状况、种植体周围组织状况、边缘骨吸收（MBL）及患者满意度。通过Pearson和Spearman相关系数评估MBL和探诊深度（PD）与自变量之间的关系。采用协方差分析、Tukey和Tamhane事后检验以及卡方检验（α = 0.05）对不同自变量状态下的MBL、PD、患者满意度及组织刺激情况进行比较。共评估了186颗种植体。参与者和覆盖义齿的平均年龄分别为61.62±9.28岁和38.45±16.64个月。计算得出生存率和成功率分别为100%和97.8%。附着龈宽度越大，PD越小，差异有统计学意义（P = 0.006）。牙龈指数（P < 0.001）和菌斑指数（P = 0.006）与PD呈正相关。需要进行基托/附着体调整者的平均MBL显著高于无需调整者（P = 0.025）。考虑到本研究样本量较小，研究结果表明种植体周围健康的黏膜与附着龈的存在及适当的口腔卫生保健显著相关。此外，应告知佩戴种植覆盖义齿的患者定期复诊的重要性。
