LOGIN
 
Share Page:
Back

Volume 28 , Issue 2
March/April 2013

Pages 375379


Primary Stability Following Abutment Preparation of One-Piece Dental Implants

Omer Cohen, DMD, PhD/Eran Gabay, DMD, PhD/Eli E. Machtei, DMD


PMID: 23527337
DOI: 10.11607/jomi.2392

Purpose: One-piece dental implants are commonly used for the immediate restoration of missing teeth. In most cases, the clinician has to prepare the abutment intraorally to ensure a proper emergence profile and abutment angulation. However, this procedure might impair primary stability and thus potentially compromise osseointegration. The aim of this study was to determine the effect of abutment preparation on the primary stability of a one-piece implant system (UNO MIS). Materials and Methods: Implant stability was assessed by resonance frequency analysis with a novel custom-made external fixation device, validated previously, developed specifically for resonance frequency measurements of this implant. Thirty 3 13-mm implants were inserted in porcine jawbone with insertion torque of 15 Ncm (group A, 15 implants) or 30 Ncm (group B, 15 implants). Abutments were prepared by reducing the facial aspect of the implant abutment with a high-speed dental turbine (400,000 rpm) equipped with a medium-roughness diamond bur. Implant stability quotients (ISQs) were measured before and after abutment preparation. Results: Mean ISQs measured in group A and group B before abutment preparation were very similar (58.2 1.4 and 57.4 0.9, respectively; P > .05). Following abutment preparation, three implants in group A lost primary stability. The mean ISQ value in group A was reduced from 58.2 1.4 to 54.9 7.9 following abutment preparation (P < .05). The mean ISQ in group B was not affected by abutment preparation (57.4 0.9 versus 57.3 1.0; P > .05). Conclusions: Abutment preparation of a one-piece dental implant inserted with low insertion torque might impair implant primary stability. Int J Oral Maxillofac Implants 2013;28:375379. doi: 10.11607/jomi.2392


Full Text PDF File | Order Article

 

 
Get Adobe Reader
Adobe Acrobat Reader is required to view PDF files. This is a free program available from the Adobe web site.
Follow the download directions on the Adobe web site to get your copy of Adobe Acrobat Reader.

 

© 2014 Quintessence Publishing Co, Inc JOMI Home
Current Issue
Ahead of Print
Archive
Author Guidelines
About
Accepted Manuscripts
Submission Form
Submit
Reprints
Permission
Advertising
Quintessence Home
Terms of Use
Privacy Policy
About Us
Contact Us
Help