Dental Academy for Continuing Professional Development, Karlsruhe, Germany.
Clinic of Operative Dentistry, Periodontology and Preventive Dentistry, University Hospital, Saarland University, Homburg, Germany.
Clin Implant Dent Relat Res. 2017 Jun;19(3):523-529. doi: 10.1111/cid.12470. Epub 2017 Jan 15.
Methacrylate-based cements seem to promote peri-implant tissue inflammation even in the absence of excess cement.
The present study deals with the question of whether the removal of methacrylate cement from the peri-implant sulcus will lead to peri-implant tissues free of inflammation on a 1-year follow-up basis.
Implant supported suprastructures that had been in the mouth for at least 3.5 years either cemented with methacrylate (premier implant cement [PIC]) or zinc eugenol (temp bond [TB]) cement were compared. All superstructures in 33 patients with a total of 61 implants (35 with PIC and 26 with TB) were removed and excess cement, bleeding on probing (BOP), suppurationen and probing depth were documented. Excess cement found was removed, and in all cases the suprastructure was recemented with TB. Patients were followed up after 4 weeks (F1) and 1 year (F2).
Excess cement was found around 60% of the implants with PIC. No excess cement was found around implants with TB. At the time of revision therapy, BOP was found around 100% of the implants with PIC and excess cement (PIC+), 93% around implants with PIC but no excess cement (PIC-), and around 42% of the TB-cemented implants (Chi-squared P < .01). Suppuration was observed in 86% of the PIC+ implants, in 14% of the PIC- implants and in 0% of the TB implants (Chi-squared P < .01). At the time of both F1 and F2, the inflammation parameters, that is BOP and suppuration, on implant level were significantly reduced in the PIC+ cases (McNemar's test P < .01). For PIC-, BOP was significantly reduced at both points in time (P < .05). For TB no differences were found. Probing depth at F2 had significantly decreased in all groups (t test P < .05).
The removal of excess cement and recementation with TB had an anti-inflammatory effect on the peri-implant tissues after 1 year.
即使不存在过量的水泥，甲基丙烯酸酯基水泥似乎也会导致种植体周围组织炎症。
本研究旨在探讨从种植体周围龈沟中清除甲基丙烯酸酯水泥是否会导致种植体周围组织在 1 年的随访中无炎症。
比较了至少在口腔中使用了 3.5 年的种植体支持的上部结构，这些上部结构分别用甲基丙烯酸酯（Premier 种植体水泥 [PIC]）或锌 Eugenol（Temp Bond [TB]）水泥粘结。将 33 名患者的所有 61 个种植体（35 个用 PIC，26 个用 TB）的上部结构取出，并记录了过量的水泥、探诊出血（BOP）、溢脓和探诊深度。发现过量的水泥被清除，所有情况下的上部结构均用 TB 重新粘结。患者在 4 周（F1）和 1 年（F2）后进行随访。
在使用 PIC 的种植体中，有 60%左右发现了过量的水泥。在使用 TB 的种植体中没有发现过量的水泥。在修正治疗时，在带有 PIC 和过量水泥（PIC+）的种植体周围发现了 100%的 BOP，在带有 PIC 但没有过量水泥（PIC-）的种植体周围发现了 93%，在使用 TB 粘结的种植体周围发现了 42%（卡方检验 P<.01）。在 PIC+种植体中观察到 86%的溢脓，在 PIC-种植体中观察到 14%，在 TB 种植体中观察到 0%（卡方检验 P<.01）。在 F1 和 F2 时，在 PIC+病例中，BOP 和溢脓等炎症参数在种植体水平上均显著降低（McNemar 检验 P<.01）。在 PIC-病例中，在两个时间点 BOP 均显著降低（P<.05）。在 TB 病例中未发现差异。在所有组中，F2 时的探诊深度均显著降低（t 检验 P<.05）。
在 1 年的时间里，从种植体周围龈沟中清除过量的水泥并用 TB 重新粘结对种植体周围组织具有抗炎作用。
