Share Page:

Volume 27 , Issue 3
May/June 2012

Pages 537-543

Marginal Accuracy of Three Implant–Ceramic Abutment Configurations

Marta Baldassarri, MS, PhD/Jenni Hjerppe, DDS, PhD/Davide Romeo, DDS, PhD/Stefan Fickl, DDS, PhD/Van P. Thompson, DDS, PhD/Christian F. J. Stappert, DDS, MS, PhD

PMID: 22616046

Purpose: Microgaps at the implant-abutment interface allow for microbial colonization, which can lead to peri-implant tissue inflammation. This study sought to determine the marginal accuracy of three different implant–zirconium oxide (zirconia) abutment configurations and one implant–titanium abutment configuration. Materials and Methods: Three combinations of implants with custom-made zirconia abutments were analyzed (n = 5/group): NobelProcera abutments/titanium inserts on Replace Select Tapered TiUnite implants (Nobel Biocare) (NP); Encode abutments/NanoTite Tapered Certain implants (Biomet 3i) (B3i); Astra Tech Dental Atlantis abutments/Biomet 3i NanoTite Tapered Certain implants (At). Five custom-made Encode titanium abutments/NanoTite Tapered Certain implants (Ti) were used as a control group. All abutments were fabricated with computer-aided design/computer-assisted manufacture. One-hundred twenty vertical gap measurements were made per sample using scanning electron microscopy (15 scans × 4 aspects of each specimen [buccal, mesial, palatal, distal] × 2 measurements). Analysis of variance was used to compare the marginal fit values among the four groups, the specimens within each group, and the four aspects of each specimen. Results: Mean (± standard deviation) gap values were 8.4 ± 5.6 µm (NP), 5.7 ± 1.9 µm (B3i), 11.8 ± 2.6 µm (At), and 1.6 ± 0.5 µm (Ti). A significant difference was found between B3i and At. No difference resulted between NP with the other two groups. Gap values were significantly smaller for Ti relative to all zirconia systems. For each ceramic abutment configuration, the fit was significantly different among the five specimens. For 12 of the 15 ceramic abutment specimens, gap values sorted by aspect were significantly different. Conclusions: The implant–titanium abutment connection showed significantly better fit than all implant–zirconia abutment configurations, which demonstrated mean gaps that were approximately three to seven times larger than those in the titanium abutment system. INT J ORAL MAXILLOFAC IMPLANTS 2012;27:537–543.

Key words: custom abutment, dental implant, marginal accuracy, titanium, zirconium oxide

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.


© 2020 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