STM Article Repository

The connection between the implant and the prosthesis (abutment) can present technical complications, such as gaps of the implant-abutment (IA) connections and lack of abutment retention. The objective of this study was to analyze the IA frictional connection as well as the bond strength of this connection when activated with and without cementation. An in vitro laboratory experiment consisted of two groups of IA mounts were evaluated through images obtained with a stereomicroscope. Nine implants were divided into two groups: Group I (GI), which received conventionally activated attachment ball prosthesis and Group II (GII), in which dual resin cement was added prior to the activation of the abutment. For the analysis of gaps and tensile strength test, Shapiro-Wilk test and F test were used, followed by t test. There was a difference between the groups regarding the gaps. Even though Group II had a dimensional increase of the gaps, it also showed higher bond strength than Group I. The cementation seems to have affected the increase of the bond strength in the implant-abutment connection, even with the increase of the gaps.