Resin cement around tissue and bone level dental implants after two cementation techniques (An In Vitro Study)

Abstract

Purpose: To detect the retained excess resin cement around tissue and bone level dental implants following two different cementation techniques. Methods: Fourteen tissue level and fourteen bone level implants (OCO Biomedical, U.S.A.) were embedded in models (Salvin Dental Specialties, U.S.A.) having rubber surface simulating the gingiva. Twenty-eight metal copings were fabricated and cemented to the implant’s abutments by RelyX U200 resin cement (3M, U.S.A.). Each group was subdivided according to the cementation technique into two subgroups: A1 and B1: Tack cure of the excess cement for three seconds, the partially set resin cement was carefully removed before complete cure. A2 and B2: 1mm vent was performed on the occlusal surfaces. Excess cement was carefully removed followed by a final cure. Rubber coverage was removed, retained cement net weight was determined. All specimens were visually examined under 30x magnification using Stereomicroscope (SZ-11, Japan). Results: Tissue level implants following the tack cure protocol had less retained excess cement percentage than the occlusal vent protocol. Statistical comparison showed a significant difference in the excess cement percentage within the tissue level subgroups (p=0.018), No significant difference observed within the bone level subgroups (p=0.096).