目的:评估单牙种植修复的临床和影像学结果,内部连接,螺钉固定,计算机辅助设计和计算机辅助制造的整体式氧化锆修复体制造在规则直径植入物。
方法:在2阶段外科手术后,根据菌斑指数评估了21例部分无牙颌患者(平均年龄55岁;9名男性/12名女性)在前后区域放置的22个植入物,口袋探测深度,探查时出血,口腔卫生水平(OH),粘膜炎/种植体周围炎的迹象,审美评分(ES),牙龈天顶位置(GZP),乳头指数评分,种植体周围牙龈的厚度,放射学边缘骨丢失,和技术并发症。从插入修复体(基线)开始前瞻性地进行植入物和修复体,长达12个月的装货后。
结果:装载后植入物存活率达到100%;装载前丢失了一个植入物。临床上,患者表现出足够的OH,组织保持健康。与任何随访检查相比,基线时的探测深度值略低(基线时的2.26[0.94]与12个月时2.53[0.66]mm)。ES,GZP,在整个研究过程中,种植体周围牙龈的厚度得到了改善。射线照相,随访1年后,平均边缘骨水平(MBL)为0.40(0.40)mm,所有时间点的平均MBL均无差异。从技术上讲,1年后的临床功能,无基台骨折或其他严重并发症发生。因此,假体重建成活率为100%。
结论:使用内部连接的单牙种植修复的临床结果,螺钉固定,经过1年的临床观察,计算机辅助设计和计算机辅助制造整体式氧化锆基台可以被认为是一种可靠的治疗方法。
OBJECTIVE: To evaluate the clinical and radiographic outcomes of single-tooth implant restorations using one-piece, internally connected, screw-retained, computer-aided design and computer-aided manufactured monolithic zirconia restorations fabricated on regular diameter implants.
METHODS: Following a 2-stage surgical procedure, 22 implants placed in anterior and posterior areas in 21 partially edentulous patients (mean age of 55 years; 9 males/12 females) were evaluated in terms of plaque index, pocket probing depth, bleeding on probing, level of oral hygiene (OH), signs of mucositis/peri-implantitis, esthetic score (ES), gingival zenith position (GZP), papilla index score, the thickness of peri-implant gingiva, radiographic marginal bone loss, and technical complications. Implants and restorations were prospectively followed from the insertion of the restoration (baseline), up to 12-months post-loading.
RESULTS: A 100% implant survival rate resulted after loading; one implant was lost before loading. Clinically, patients performed an adequate OH, and tissues were kept healthy. Probing depth showed a slightly lower value at baseline compared to any follow-up examination (2.26 [0.94] at baseline vs. 2.53 [0.66] mm at 12 months). ES, GZP, and the thickness of the peri-implant gingiva improved throughout the course of the study. Radiographically, average marginal bone level (MBL) was 0.40 (0.40) mm after 1-year follow-up with no differences in average MBL at all time points. Technically, after 1 year of clinical function, neither abutment fracture nor any other serious complications occurred. Hence, prosthetic reconstruction survival rate was 100%.
CONCLUSIONS: Clinical outcomes of single-tooth implant restorations using internally connected, screw-retained, computer-aided design and computer-aided manufacturing monolithic zirconia abutments can be considered a reliable treatment alternative after 1-year clinical observation.