Slutzkey Gil S, Cohen Omer, Chaushu Liat, Rahmanov Arkadi, Mijiritsky Eitan, Beitlitum Ilan, Kolerman Roni
Department of Periodontology and Oral Implantology, The Maurice and Gabriela Goldschleger School of Dental Medicine, Tel-Aviv University, Tel-Aviv 6997801, Israel.
Department of Oral Rehabilitation, The Maurice and Gabriela Goldschleger School of Dental Medicine, Tel-Aviv University, Tel-Aviv 6997801, Israel.
J Clin Med. 2022 May 20;11(10):2902. doi: 10.3390/jcm11102902.
All-on-four protocols with tilted implants in the maxilla are used to rehabilitate the terminal dentition of the severe generalized periodontitis patients. Data on long-term biological complications are scarce.
Eighty-four axial and forty-six tilted immediate implants have been placed in the extraction sockets of 23 patients according to a four-six implants protocol combined with ridge augmentation. Within 72 h, a provisional prosthesis was cemented to the implants; after 6 months, a cemented ceramic-metallic prosthesis was delivered. The patients were followed for up to 5 years.
The 5-year survival rate of the straight and tilted implants was 100% and 97.8, and the prosthetic one was 100%. Marginal bone loss (MBL) of the straight implants was 0.42 ± 0.67 and 0.59 ±1.01 mm on the mesial and distal sides; for the tilted, it was 0.37 ± 0.68 and 0.34 ±0.62 mm, and the differences were not statistically significant. Implant position, smoking, keratinized mucosal width, and cantilever did not affect MBL. Peri-implant mucositis involved 29.4% and 22.2% of the straight and tilted implants, respectively; peri-implantitis involved 5.8% and 4.4% of the straight and tilted implants, respectively, without statistical significance.
This immediate loading protocol's 5-year survival and success rates were high. No difference between the straight and tilted implants was found regarding survival, success rates, and MBL.
在上颌使用倾斜种植体的全口四颗种植方案用于修复重度广泛性牙周炎患者的终末期牙列。关于长期生物学并发症的数据较少。
根据四颗-六颗种植体方案并结合牙槽嵴增量技术,在23例患者的拔牙窝内植入了84颗轴向种植体和46颗倾斜即刻种植体。在72小时内,将临时修复体粘固到种植体上;6个月后,交付粘固的金属烤瓷修复体。对患者进行了长达5年的随访。
直形和倾斜种植体的5年生存率分别为100%和97.8%,修复体的5年生存率为100%。直形种植体近中侧和远中侧的边缘骨吸收(MBL)分别为0.42±0.67和0.59±1.01mm;倾斜种植体的MBL分别为0.37±0.68和0.34±0.62mm,差异无统计学意义。种植体位置、吸烟、角化黏膜宽度和悬臂长度均不影响MBL。种植体周围黏膜炎分别累及29.4%的直形种植体和22.2%的倾斜种植体;种植体周围炎分别累及5.8%的直形种植体和4.4%的倾斜种植体,差异无统计学意义。
这种即刻负重方案的5年生存率和成功率较高。在生存率、成功率和MBL方面,直形种植体和倾斜种植体之间未发现差异。