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BioMed Research International
Volume 2016 (2016), Article ID 9695389, 10 pages
Clinical Study

Does the Laser-Microtextured Short Implant Collar Design Reduce Marginal Bone Loss in Comparison with a Machined Collar?

1Department of Oral Implantology, Istanbul University Faculty of Dentistry, Istanbul, Turkey
2Department of Periodontology, Bezmialem Vakif University Faculty of Dentistry, Istanbul, Turkey
3Department of Prosthodontics, Istanbul University Faculty of Dentistry, Istanbul, Turkey
4Department of Oral Rehabilitation, The Maurice and Gabriela Goldschleger School of Dental Medicine, Tel Aviv University, Tel Aviv-Yafo, Israel

Received 5 April 2016; Revised 29 July 2016; Accepted 4 August 2016

Academic Editor: Gilberto Sammartino

Copyright © 2016 B. Alper Gultekin et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Purpose. To compare marginal bone loss between subgingivally placed short-collar implants with machined collars and those with machined and laser-microtextured collars. Materials and Methods. The investigators used a retrospective study design and included patients who needed missing posterior teeth replaced with implants. Short-collar implants with identical geometries were divided into two groups: an M group, machined collar; and an L group, machined and laser-microtextured collar. Implants were evaluated according to marginal bone loss, implant success, and probing depth (PD) at 3 years of follow-up. Results. Sixty-two patients received 103 implants (56 in the M group and 47 in the L group). The cumulative survival rate was 100%. All implants showed clinically acceptable marginal bone loss, although bone resorption was lower in the L group (0.49 mm) than in the M group (1.38 mm) at 3 years (). A significantly shallower PD was found for the implants in the L group during follow-up (). Conclusions. Our results suggest predictable outcomes with regard to bone loss for both groups; however, bone resorption was less in the L group than in the M group before and after loading. The laser-microtextured collar implant may provide a shallower PD than the machined collar implant.