title: Mechanics of the implant-abutment connection: an 8-degree taper compared to a butt joint connection.
abstract: This paper presents aa comparison between the 8-degree Morse Taper and the butt joint aa connections between an implant and an abutment. Three-dimensional, non-linear finite element models were created to compare the 2 connection principles under equal conditions. The loading configuration was thereby modeled according to a test setup actually used for the dynamic long-term testing of dental implants as required for regulatory purposes. The results give insight into the mechanics involved in each type of connection and are compared to actual findings with the testing machine. The comparison indicates the superior mechanics of conical abutment connections and helps to explain their significantly better long-term stability in the clinical application.
authors.affiliation: Institut Straumann AG, Waldenburg, Switzerland. fgfgg@datacomm.ch
authors.forename: B R
authors.initials: BR
authors.lastname: Merz
authors.forename: S
authors.initials: S
authors.lastname: Hunenbart
authors.forename: U C
authors.initials: UC
authors.lastname: Belser
mesh_terms: D000044:Dental Abutments; D003758:Dental Implantation, Endosseous; D015921:Dental Implants; D017267:Dental Prosthesis Design; D017268:Dental Prosthesis Retention / Q000295:instrumentation*; D019094:Dental Prosthesis, Implant-Supported; D003799:Dental Stress Analysis / Q000379:methods; D005069:Evaluation Studies as Topic; D020342:Finite Element Analysis; D006801:Humans; D013314:Stress, Mechanical
chemical_list: D015921:Dental Implants