Abstract
Background. The information available about osseointegration and the bone to implant interaction of zirconia implants with various surface modifications is still far from sufficient. Objective. The purpose of this systematic review and meta-analysis was to evaluate and compare zirconia dental implants with different surface topographies, with a focus on bone to implant contact and removal torque. Methods. The systematic review of the extracted publications was performed to compare the bone to implant contact (BIC) with removal torque (RT) values of titanium dental implants and machined and surfaced modified zirconia implants. Results. A total of fifteen articles on BIC and RT values were included in the quantitative analysis. No significant difference in the BIC values was observed between titanium and machined zirconia implants (p = 0.373; 95% CI: −0.166 to 0.443). However, a significantly better BIC values were observed for acid etched zirconia implants compared with those of titanium implants (p = 0.032; 95% CI: 0.068 to 1.461). Unmodified zirconia implants showed favorable BIC values compared to modified-surface zirconia implants (p = 0.021; 95% CI: −0.973 to −0.080). Conclusion. Acid etched zirconia implants may serve as a possible substitute for successful osseointegration.
Highlights
Pure titanium and some of its alloys have so far been the material of choice in implant dentistry and orthopedics [1]
(1) Does the choice of implant material affect bone to implant contact when comparing titanium to zirconia in animal models? (2) What is the impact of zirconia implant surface modification on BIC and removal torque (RT) when comparing modified to as sintered zirconia in animal models? The study population was the animals which received machined or surface-modified zirconia and titanium dental implants
The search in the database retrieved an initial number of 2018 references. 1900 titles were excluded after further assessment (Figure 1)
Summary
Pure titanium and some of its alloys have so far been the material of choice in implant dentistry and orthopedics [1]. There has been considerable discussion of zirconia surface modification and structure, the information available about osseointegration responses and the implant-bone interaction of these implants is still far from sufficient. The purpose of this systematic review and meta-analysis was to evaluate and compare zirconia dental implants with different surface topographies, with a focus on bone to implant contact and removal torque. The systematic review of the extracted publications was performed to compare the bone to implant contact (BIC) with removal torque (RT) values of titanium dental implants and machined and surfaced modified zirconia implants. A significantly better BIC values were observed for acid etched zirconia implants compared with those of titanium implants (p = 0.032; 95% CI: 0.068 to 1.461). Acid etched zirconia implants may serve as a possible substitute for successful osseointegration
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