LOGIN
 
Share Page:
Back

Volume 19 , Issue 3
May/June 2004

Pages 393398


Retrospective Analysis of Implant Survival and the Influence of Periodontal Disease and Immediate Placement on Long-term Results

Cyril I. Evian, BDS, HDD, DMD/Robert Emling, MS, EdD/Edwin S. Rosenberg, DMD/Jonathan A. Waasdorp, BS/Wendy Halpern, DMD/Shalin Shah, BS/Marela Garcia, DDS


PMID: 15214224

Purpose: The purpose of this study was to investigate the cumulative survival rates of dental implants placed in a private periodontal practice and the effects of periodontal disease and immediate placement on implant survival. Materials and Methods: A retrospective chart review was conducted on 149 consecutive patients. Each patient had a single implant placed. For the purpose of analysis, patients were divided into 2 groups: those who were periodontally healthy and those who had periodontal disease. Implants were placed into available bone either immediately or after a healing period. All failed implants were removed and recorded. The effects of periodontal status and placement time on implant survival were evaluated using Cox proportional hazards regression and log-rank tests. Results: Of the 149 implants in the study, 22 failed during the observation period. The 127 censored cases (ie, implants that had not failed at the end of the observational period) were observed for a mean of 943 days (SD 932, range 35 to 4,030). Failed implants were observed for a mean of 722 days (SD 1,026, range 18 to 3,548). The presence of periodontal disease appeared to be associated with a greater failure rate, but there was no observed effect associated with time of placement. The percentages of censored immediate placement cases and delayed placement cases were nearly identical. Among the 77 implants associated with periodontal disease, placement time was not strongly associated with percentage censored. Forty-three of the 55 immediately placed implants (78.18%) and 18 of the 22 implants (81.18%) whose placement was delayed were censored. Both Cox proportional hazards regression and log-rank tests established that survival was adversely affected by periodontal disease (P  .05) but unaffected by time of placement (P  .50). The lower 1-sided 95% confidence limit for median survival time was 3,548 days for patients without periodontal disease and 1,799 days for patients with disease. Discussion and Conclusion: Implant survival was compromised by a history of periodontitis but not affected by immediate or delayed placement. INT J ORAL MAXILLOFAC IMPLANTS 2004;19:393398


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