A5-year follow-up study of peri-implant bone resorption of zirconia implants in78consecutive cases

doi:10.19438/j.cjoms.2022.02.012

Abstract

Abstract: PURPOSE: To analyze peri-implant bone resorption of zirconia implants, so as to evaluate the value of zirconia all-ceramic restorations for clinical use. METHODS: Seventy-eight patients receiving all-ceramic fixed partial denture with zirconia framework from January 2014 to January 2016 were prospectively enrolled, and a five-year follow-up was carried out. The restoration integrity, margin sealing, implant retention rate, modified sulcus bleeding index (mSBI), modified plaque index (mPLI) and probing depth (PD) were evaluated. Radiographs were used to evaluate implant marginal bone resorption, and the related factors affecting bone resorption were determined using multiple linear regression analysis. SPSS19.0 software package was used for data analysis. RESULTS: The follow-up period was 5 years. During the follow-up period, a total of 6 patients were lost to follow-up. The remaining 72 patients (a total of 80 implants and 63 prostheses) completed the follow-up. None of the implants showed loosening, fracture or displacement. Porcelain fragmentation occurred in 6 restorations, poor fit between the crown edge and the abutment occurred in 2 restorations, and no restorations fell off. The mean value of marginal bone resorption was (0.23±0.04) mm(0-2.03 mm). Statistical analysis displayed that history of diabetes, porcelain fragmentation and type of dental implant affected peri-implant bone resorption of zirconia implants(P<0.05). CONCLUSIONS: Long-term follow-up results show that zirconia implant is a reliable implant system with high survival rate, good soft tissue aesthetic effect, and marginal bone stability.

Key words: Zirconia all-ceramic restoration implant, Peri-implant bone resorption, Long-term effect

CLC Number:

R782.13

SUN Dan-dan, SHI Sa-sa, YIN Wei-jiao. A5-year follow-up study of peri-implant bone resorption of zirconia implants in78consecutive cases[J]. China Journal of Oral and Maxillofacial Surgery, 2022, 20(2): 168-172.

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