title: Compliant Keeper system replication of the periodontal ligament protective damping function for implants: part II.
abstract: BACKGROUND
  There are numerous articles regarding implant overloading, interfacial integrity and component failure. A significant amount of literature review supports the concept of the progressive loading and damping, and it should be addressed.
  
  
  OBJECTIVE
  This study was designed to correlate durometer measurements of the elastomeric test materials and actual Periotest values (PTV) of the test materials as preloaded sleeve rings in Compliant Keeper abutments to support the Compliant Keeper as a viable implant damping system.
  
  
  METHODS
  A 4-unit fixed-removable implant-supported partial denture was the test model. Sleeve ring combinations replaced "O" rings and 220 Periotest measurements were graphically recorded, then analyzed by least square of means, 2-way analysis of variance, and a Tukey test.
  
  
  RESULTS
  There was a correlation between durometer measurements and PTVs of sleeve rings. Finite movement was measured accurately with the Periotest (P =. 0001) so that Compliant Keeper systems can be programmed to match the movement of another implant abutment, because they might be able to match the PTV of a natural abutment.
  
  
  CONCLUSIONS
  Significant differences exist between the "O" rings and sleeve rings. The sleeve ring, as a controllable damping element, enables the Compliant Keeper system to provide progressive loading and damping for implant-supported prostheses.
authors: M C
authors: MC
authors: Mensor
authors: R H
authors: RH
authors: Ahlstrom
authors: E W
authors: EW
authors: Scheerer
mesh_terms: D000704:Analysis of Variance; D001696:Biomechanical Phenomena; D000044:Dental Abutments; D017267:Dental Prosthesis Design / Q000295:instrumentation* / Q000379:methods / Q000706:statistics & numerical data; D019094:Dental Prosthesis, Implant-Supported / Q000295:instrumentation* / Q000379:methods / Q000706:statistics & numerical data; D003945:Diagnosis, Oral / Q000295:instrumentation / Q000706:statistics & numerical data; D005260:Female; D006245:Hardness Tests / Q000295:instrumentation; D006801:Humans; D016018:Least-Squares Analysis; D008875:Middle Aged; D010474:Percussion / Q000295:instrumentation / Q000706:statistics & numerical data; D010513:Periodontal Ligament / Q000502:physiology*