Click for new scientific resources and news about Corona[COVID-19]

Paper Information

Journal:   JOURNAL OF DENTAL SCHOOL SHAHID BEHESHTI UNIVERSITY OF MEDICAL SCIENCE   WINTER 2012 , Volume 29 , Number SPECAIL ISSUE; Page(s) 352 To 357.
 
Paper: 

THE EFFECTS OF ABUTMENT SCREW ACCESS CHANNEL FILLING MATERIAL AND ITS AMOUNT ON RESISTANCE TO DISLODGEMENT OF CEMENT RETAINED IMPLANT-SUPPORTED CROWNS

 
 
Author(s):  SABOURY A., BAMDADIAN T., MAHSHID M.
 
* 
 
Abstract: 

Background & Aim: Factors affecting the retention of fixed prosthesis to natural abutments are well understood. In contrast, little is known concerning factors influencing the retention of fixed prostheses cemented to implant abutments. The purpose of this study was to investigate the effect that varying screw access channel filling materials and methods has on the retention of casting cemented to implant abutment
Materials & Methods: A 15 degree preangeled abutment (Noble biocare Replace) was placed in implant analogue. Ten crowns were constructed that incorporated an attachment to allow removal.The screw access channels were either fully or partially filled with Gutta perka, Composit or silicone. Crowns were cemented to the abutment with TemoBond. The tensile force required to separate the cemented crowns from the abutment was measured using an Instron universal load testing machine.
Results: The mean peak removal force was significantly higher with partially filled access hole compared with fully filled. About the material filling the screw access hole, the mean peak removal force was highest with Composit and that was greater than Gutta perka and silicone respectively.
Conclusion: The method and materials selected to fill the screw access channel of an implant abutment can be a significant factor affecting retention of a cemented restoration.

 
Keyword(s): DENTAL IMPLANT, RETENTION, CEMENT
 
References: 
  • ندارد
 
  Persian Abstract Yearly Visit 75
 
Latest on Blog
Enter SID Blog