Department of Oral Surgery and Implant Dentistry, School of Dentistry, Johann Wolfgang Goethe University, Frankfurt, Germany.
Department of Periodontology, School of Dental Medicine, Stony Brook University, Stony Brook, NY, USA.
Clin Oral Investig. 2022 Mar;26(3):2879-2886. doi: 10.1007/s00784-021-04269-w. Epub 2021 Nov 12.
There is no information today about the impact of abutment type on the crestal bone stability. This retrospective study was aimed to evaluate the crestal bone levels (CBL) and failures of implants with prefabricated and customized abutments after the long term.
The mesial and distal CBL around dental implants with prefabricated and custom abutments were recorded. Measures were completed at 5- and 10-year endpoints.
Sixty-three patients with 249 implants were included. One hundred twenty-seven implants (51%) were restored with prefabricated and 122 implants (49%) with customized abutments. All the patients received fixed restorations. The results showed that the CBL was higher in patients with custom abutments than the CBL of patients with prefabricated abutments. The mean bone loss around implants with prefabricated abutments was 0.29 mm mesial/0.45 mm distal after 10 years. Meanwhile, the mean bone loss at implants with custom abutments was 1.19 mm mesial/1.27 mm distal (p < 0.05) after 10 years. None of the implants with prefabricated abutments failed up to 10-year follow-up, whereas 4.1% of implants with customized abutments failed.
Implants with prefabricated abutments present less crestal bone loss compared to customized abutments.
The selection of abutment type is associated with the crestal bone stability or marginal bone loss.
目前尚无关于基台类型对牙槽嵴骨稳定性影响的信息。本回顾性研究旨在评估长期使用预制基台和定制基台的种植体的牙槽嵴骨水平（CBL）和种植体失败情况。
记录使用预制基台和定制基台的种植体近中和远中 CBL。测量在 5 年和 10 年终点完成。
63 名患者共 249 个种植体纳入本研究。127 个种植体（51%）采用预制基台修复，122 个种植体（49%）采用定制基台修复。所有患者均接受固定修复。结果表明，使用定制基台的患者的 CBL 高于使用预制基台的患者。使用预制基台的种植体 10 年后近中平均骨丢失为 0.29mm，远中为 0.45mm。同时，使用定制基台的种植体 10 年后近中平均骨丢失为 1.19mm，远中为 1.27mm（p<0.05）。至 10 年随访时，使用预制基台的种植体无一例失败，而使用定制基台的种植体有 4.1%失败。
与定制基台相比，使用预制基台的种植体牙槽嵴骨丢失更少。
基台类型的选择与牙槽嵴骨稳定性或边缘骨丢失有关。
