RESEARCH AND EDUCATION
Load to failure of different zirconia abutments for an internal hexagon implant Burak Yilmaz, DDS, PhD,a Louai G. Salaita, DDS, MS,b Jeremy D. Seidt, PhD,c Edwin A. McGlumphy, DDS, MS,d and Nancy L. Clelland, DMD, MSe Soft tissue esthetics is one of ABSTRACT the ongoing challenges in Statement of problem. Various zirconia abutment designs are available to restore implant systems. implant dentistry. Zirconia Fracture resistance is one of the criteria involved in selecting among these options. dental implant abutments Purpose. The purpose of this in vitro study was to measure and compare load to failure for 5 improve the gingival discolorzirconia abutments for an internally hexagon implant. ation that occurs when titaMaterial and methods. Five 4.1×11.5-mm Zimmer tapered screw-vent implants were individually nium abutments are used for secured in a loading apparatus, and 3 specimens of each of the 5 different abutments (Zimmer 1patients with thin soft tissue. Contour with a Ti ring, anatomic-contour Atlantis-Zr, anatomic-contour Inclusive-Zr, anatomic3 However, some clinical concontour Astra Tech ZirDesign, Legacy Straight Contoured abutment with Ti core) (N=15) were cerns are associated with the loaded at a 30-degree angle until the implant abutment complex failed. Data for load to failure use of zirconia implant abutwere compared with analysis of variance and a Tukey-Kramer post hoc test (a=.05). ments. These include zirconia Results. The custom anatomic-contour abutment (Inclusive) showed the lowest load to fracture, fracture and wear of the titaand the stock anatomic-contour (AstraTech ZirDesign) the second lowest load to fracture. These nium implant body at the zirwere significantly lower than all other abutments (P
Load to failure of different zirconia abutments for an internal hexagon implant Burak Yilmaz, DDS, PhD,a Louai G. Salaita, DDS, MS,b Jeremy D. Seidt, PhD,c Edwin A. McGlumphy, DDS, MS,d and Nancy L. Clelland, DMD, MSe Soft tissue esthetics is one of ABSTRACT the ongoing challenges in Statement of problem. Various zirconia abutment designs are available to restore implant systems. implant dentistry. Zirconia Fracture resistance is one of the criteria involved in selecting among these options. dental implant abutments Purpose. The purpose of this in vitro study was to measure and compare load to failure for 5 improve the gingival discolorzirconia abutments for an internally hexagon implant. ation that occurs when titaMaterial and methods. Five 4.1×11.5-mm Zimmer tapered screw-vent implants were individually nium abutments are used for secured in a loading apparatus, and 3 specimens of each of the 5 different abutments (Zimmer 1patients with thin soft tissue. Contour with a Ti ring, anatomic-contour Atlantis-Zr, anatomic-contour Inclusive-Zr, anatomic3 However, some clinical concontour Astra Tech ZirDesign, Legacy Straight Contoured abutment with Ti core) (N=15) were cerns are associated with the loaded at a 30-degree angle until the implant abutment complex failed. Data for load to failure use of zirconia implant abutwere compared with analysis of variance and a Tukey-Kramer post hoc test (a=.05). ments. These include zirconia Results. The custom anatomic-contour abutment (Inclusive) showed the lowest load to fracture, fracture and wear of the titaand the stock anatomic-contour (AstraTech ZirDesign) the second lowest load to fracture. These nium implant body at the zirwere significantly lower than all other abutments (P
