title: Does the Laser-Microtextured Short Implant Collar Design Reduce Marginal Bone Loss in Comparison with a Machined Collar?
abstract: 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 (p< 0.01). A significantly shallower PD was found for the implants in the L group during follow-up (p< 0.01).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.
authors.affiliation: Department of Oral Implantology, Istanbul University Faculty of Dentistry, Istanbul, Turkey.
authors.forename: B Alper
authors.identifier: 0000-0002-7139-3572
authors.initials: BA
authors.lastname: Gultekin
authors.affiliation: Department of Periodontology, Bezmialem Vakif University Faculty of Dentistry, Istanbul, Turkey.
authors.forename: Ali
authors.initials: A
authors.lastname: Sirali
authors.affiliation: Department of Prosthodontics, Istanbul University Faculty of Dentistry, Istanbul, Turkey.
authors.forename: Pinar
authors.initials: P
authors.lastname: Gultekin
authors.affiliation: Department of Oral Implantology, Istanbul University Faculty of Dentistry, Istanbul, Turkey.
authors.forename: Serdar
authors.initials: S
authors.lastname: Yalcin
authors.affiliation: Department of Oral Rehabilitation, The Maurice and Gabriela Goldschleger School of Dental Medicine, Tel Aviv University, Tel Aviv-Yafo, Israel.
authors.forename: Eitan
authors.initials: E
authors.lastname: Mijiritsky