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

Abstract EN

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.