Share Page:

Volume 30 , Issue 6
November/December 2015

Pages 13691377

Soft Tissue and Crestal Bone Changes Around Implants with Platform-Switched Abutments Placed Nonsubmerged at Subcrestal Position: A 2-Year Clinical and Radiographic Evaluation

Mario Aimetti, MD, DDS/Francesco Ferrarotti, DDS/Giulia Maria Mariani, DDS/Carlo Ghelardoni, MD, DDS/Federica Romano, DDS

PMID: 26478966
DOI: 10.11607/jomi.4017

Purpose: To evaluate crestal bone changes around implants with platform-switched abutments placed 1 mm subcrestally in a prospective clinical investigation. Materials and Methods: Forty consecutive systemically healthy patients (mean age standard deviation [SD], 55.2 8.7 years) with one or more missing teeth were consecutively treated with 1-mm subcrestally positioned, platform-switched, tapered, full treated implants restored with coded abutments. A total of 58 implants were placed. Final restorations were delivered 4 to 8 months after implant insertion. Digital standardized periapical radiographs using customized film holders were obtained at the time of implant insertion, and at 12 and 24 months after final prosthesis placement. Marginal peri-implant bone levels were measured at the mesial and distal surfaces of each implant using digital image software. Results: All implants osseointegrated and were clinically stable at the 2-year follow-up. The cumulative survival rate was 100%. From implant insertion to the 2-year follow-up, the mean bone loss was 0.32 0.37 mm. No significant differences related to sex, implant site, and bone density were observed. The mean midbuccal and interproximal soft tissue margin positions were 1.13 0.5 mm and 1.15 0.6 mm coronal to the prosthetic finish line, respectively. Conclusion: There is limited clinical information regarding the amount of marginal bone loss around two-piece platform-switched implants placed at subcrestal positions. Results of this study suggest that platform switching and subcrestal location of the implant-abutment interface may be effective in reducing bone loss and in preserving esthetics around dental implants.

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.


© 2017 Quintessence Publishing Co, Inc JOMI Home
Current Issue
Ahead of Print
Author Guidelines
Accepted Manuscripts
Submission Form
Quintessence Home
Terms of Use
Privacy Policy
About Us
Contact Us