Clinical assessment of evaluating passive fit of implant-supported fixed prostheses

doi:10.12337/zgkqzzxzz.2022.08.008

Abstract

Abstract: Passive fit is closely associated with the long-term success rate of implant-supported prostheses. Therefore, clinical assessment of passive fit is important in the implant therapy. Based on the current evidence, an absolutely passive fit cannot be obtained, and a certain level of misfit was considered to be clinically acceptable. Various methods are applied to assess the passive fit of prostheses, which are mainly divided into two aspects: passiveness and marginal fit. The screw resistance test could be used to assess passiveness. Regarding marginal fit, the following methods are available: alternate finger pressure, visual inspection, tactile sensation, radiographs, one-screw test and disclosing materials. Each assessment method has its advantages and limitations. This article briefly reviewed the definition of passive fit and the common clinical assessment methods to provide references for clinical diagnosis and treatment.

Key words: Implant dentistry, Passive fit, Clinically acceptable fit, Implant-supported fixed prostheses, Assessment methods

Guo Yongqing, Ma Yun, Yu Hao. Clinical assessment of evaluating passive fit of implant-supported fixed prostheses[J]. Chinese Journal of Oral Implantology, 2022, 27(4): 243-247.

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