Effect of zirconia personalized gingival penetration on peri-implant soft and hard tissue of thin gingival biotypes in the anterior region: a retrospective study
10.3760/cma.j.cn112144-20240316-00112
- VernacularTitle:氧化锆个性化穿龈结构对薄龈生物型患者前牙区种植体周软硬组织的影响
- Author:
Yarong WANG
1
;
Mu ZHANG
;
Pei CHEN
;
Shaobing LI
;
Haibin LU
;
Mianyan ZENG
;
Yan ZENG
;
Mingdeng RONG
Author Information
1. 南方医科大学口腔医院牙周种植科，广州510280
- Keywords:
Esthetics, dental;
Dental implantation;
Gingival biotype;
Zirconia personalized gingival penetration
- From:
Chinese Journal of Stomatology
2024;59(7):690-695
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To investigate the effect of zirconia personalized gingival structure on peri-implant soft and hard tissue stability after single-tooth implant restorations in patients with thin gingival biotypes in the anterior region, with a view to provide a clinical guideline.Methods:This retrospective study included 20 patients with thin gingival biotype and implant restorations in the anterior region. These patients included 9 males and 11 females, and the age was (35.2± 10.3) years. The patients were from the Department of Periodontal Implantology, Stomatology Hospital, Southern Medical University from January 2018 to December 2022. Computer-aided design/computer-aided manufacturing (CAD/CAM) techniques were used to fabricate a titanium base zirconia personalized gingival structure to maintain the soft-tissue perforated gingival contour of the anterior esthetic zone. This structure consists of two modalities: titanium base + zirconia outer crown or titanium base personalized zirconia abutment + zirconia outer crown. Clinical outcomes were recorded immediately and after delivery of the final restorations. Implant retention was recorded, esthetic scoring was performed using the pink esthetic index, the amount of bone resorption at the implant margins was measured based on digitized apical radiographs, and periodontal health was evaluated using the modified plaque index and the modified bleeding index.Results:The survival rate of the 20 implants was 100% after 3 years of wearing the final restorations, with a pink aesthetic score of 9.3±0.9. Bone resorption at the proximal and distal mesial margins of the implants was 0.09 (-0.21, 0.20) mm, 0.17 (-0.12, 0.27) mm after 3 years, respectively, and the difference was not statistically significant when compared to bone resorption immediately after placement of the final restoration [0(0, 0) mm] ( Z=-1.03, P=0.394; Z=-2.05, P=0.065). Conclusions:Zirconia personalized gingival structure maintains the stability of peri-implant hard and soft tissues of thin gingival biotypes in the anterior region.
