Int J Oral Maxillofac Implants. 2022 May-Jun;37(3):515-524. doi: 10.11607/jomi.9051.
The aims of this study were: (1) to quantify the marginal bone loss (MBL) of 3.3-mm narrow-diameter, bonelevel, titanium-zirconia (Ti-Zr) implants with two different surfaces in single restorations after a 1-year follow-up; (2) to analyze the combinations of different variables that may influence MBL; and (3) to record the Pink Esthetic Score (PES) value and its correlation with MBL.
This is a prospective longitudinal clinical study with a 1-year follow-up after crown placement. Two different implant surfaces (sandblasted acid-etched and modified sandblasted acid-etched) were used. All bone-level and bone level-tapered implants had a diameter of 3.3 mm. Different healing and prosthetic abutments were used. Clinical, radiographic, and photographic records were taken 6 months and 1 year after placement of the restorations, and the survival rate, MBL, PES, clinical parameters, and biologic and/or mechanical complications were assessed. The correlations between the variables and MBL were verified.
A total of 30 narrowdiameter implants were placed in 30 patients; 18 implants had a sandblasted acid-etched surface, and 12 implants had a modified sandblasted acid-etched surface. The measured MBL at 1 year after implant function had a mean value of -0.36 mm, ranging from 0 mm to -1.77 mm. There was no implant loss. A statistically significant relationship was observed between implant shape (design and length), implant placement level, healing abutment, prosthetic abutment size, gingival thickness, and MBL. The mean PES values recorded at the beginning and end of the study were 7.58 and 11.37, respectively.
Narrow-diameter implants showed reduced MBL values, with the surrounding tissues remaining stable after 1 year of follow-up. The MBL did not show different values on two implant surfaces. MBL does not seem to influence esthetic outcome.
本研究的目的是：（1）量化 3.3 毫米窄直径、骨水平、钛锆（Ti-Zr）种植体在单颗修复体中 1 年随访后的边缘骨丧失（MBL）；（2）分析可能影响 MBL 的不同变量组合；（3）记录粉色美学评分（PES）值及其与 MBL 的相关性。
这是一项前瞻性纵向临床研究，在放置牙冠后进行为期 1 年的随访。使用两种不同的种植体表面（喷砂酸蚀和改良喷砂酸蚀）。所有骨水平和骨水平渐缩种植体的直径均为 3.3 毫米。使用了不同的愈合和修复体基台。在修复体放置后 6 个月和 1 年拍摄临床、放射和照片记录，并评估种植体的存活率、MBL、PES、临床参数以及生物和/或机械并发症。验证了变量与 MBL 之间的相关性。
共将 30 颗窄直径种植体植入 30 名患者，其中 18 颗种植体采用喷砂酸蚀表面，12 颗种植体采用改良喷砂酸蚀表面。种植体功能 1 年后测量的 MBL 值平均值为-0.36 毫米，范围为 0 毫米至-1.77 毫米。无种植体丢失。种植体形状（设计和长度）、种植体放置水平、愈合基台、修复体基台尺寸、牙龈厚度与 MBL 之间存在统计学显著关系。研究开始和结束时记录的平均 PES 值分别为 7.58 和 11.37。
窄直径种植体显示出较低的 MBL 值，在 1 年随访后周围组织保持稳定。两种种植体表面的 MBL 值没有差异。MBL 似乎不会影响美学效果。
