title: A simplified method to assess precision of fit between framework and supporting implants: a preliminary study.
abstract: OBJECTIVE
  To present a simplified method for assessment of precision of fit between screw-retained frameworks and supporting implants in clinical situations.
  
  
  METHODS
  Torque-angle signature analysis is a method for analysis of tension within a joint. The OsseoCare device developed by Nobel Biocare was utilized for the tests. Three titanium frameworks were fabricated on the same master cast according to 3 different methods: (1) 1-piece casting, (2) the CNC (computer numeric controlled) method, and (3) the CTiP (Cresco Ti Precision) method. These frameworks were used to test the device and indirectly the application of the torque-angle signature analysis technology.
  
  
  RESULTS
  The frameworks fabricated according to the CNC and CTiP methods demonstrated OsseoCare tracings similar to the reference models of passively fitting joints, while the 1-piece cast framework did not.
  
  
  CONCLUSIONS
  According to this pilot study, the OsseoCare device and torque-angle signature analysis proved to be feasible for clinical assessment of fit between frameworks and supporting implants.
authors.affiliation: Department of Oral Surgery, School of Dentistry, University of Milan, Italy. angelocalderini@tiscali.it
authors.forename: Angelo
authors.initials: A
authors.lastname: Calderini
authors.forename: Carlo
authors.initials: C
authors.lastname: Maiorana
authors.forename: Giuliano
authors.initials: G
authors.lastname: Garlini
authors.forename: Tommaso
authors.initials: T
authors.lastname: Abbondanza
mesh_terms: D000368:Aged; D017076:Computer-Aided Design; D000044:Dental Abutments; D003735:Dental Casting Technique; D015921:Dental Implants; D003764:Dental Materials; D019094:Dental Prosthesis, Implant-Supported; D012994:Dental Soldering; D003779:Denture Design; D003781:Denture Retention; D005240:Feasibility Studies; D006801:Humans; D007834:Lasers; D008297:Male; D010865:Pilot Projects; D017755:Prosthesis Fitting / Q000295:instrumentation / Q000379:methods; D015203:Reproducibility of Results; D013499:Surface Properties; D014025:Titanium; D019415:Torque
chemical_list: D015921:Dental Implants; D003764:Dental Materials; D014025:Titanium