In Vitro Evaluation of Leakage at Implant-Abutment Connection of Three Implant Systems Having the Same Prosthetic Interface Using Rhodamine B

摘要

In two-stage implant therapy, screwing the abutment to the implant results in a gap between components. The implant-abutment gap, or inner space, acts as a bacterial reservoir having a degree of communication with the oral cavity, which could interfere with peri-implant tissue health and function[1-3].Several adverse mechanical and biological consequences may occur.Mechanical complications such as increased incidence of abutment rotation [4-8], screw loosening [9, 10], and preload reduction [11] have been reported to occur with poorly adapted abutments.Biological complications such as mucositis [12] and bone loss [13,14] have also been reported. In most implant systems, bidirectional exchange of fluids takes place at the level of the alveolar bone crest and is considered to be an important factor for chronic inflammatory infiltration and marginal bone loss [1-3,14-16]. Especially during function and under occlusal loading, rnicromovernent between abutment and implant will create volumetrically variation in the inner space of the implant system [17-19].