Laser-Microgrooved Implant Collars See Less Peri-Implantitis

Phillip Bonner, DDS


A retrospective study published in the International Journal of Oral and Maxillofacial Implants evaluated the incidence of peri-implant mucositis and peri-implantitis around dental implants with the same body design and surface but different collar surface (laser-microgrooved versus not laser-microgrooved) after 5 years of loading.

The study was carried out on patients at a private dental clinic enrolled in a periodontal maintenance program who received at least one implant with a laser-microgrooved collar surface and one implant without a laser-microgrooved collar surface.

Clinical variables such as plaque, pocket depth, bleeding on probing, suppuration, and radiographic marginal bone loss at > 5 years around implants were investigated. The correlation between the prevalence of peri-implant mucositis/peri-implantitis and biotype, keratinized tissue width, prosthetic connection type, and prosthetic design type was also analyzed. A total of 166 implants in 74 patients were investigated.

At the end of the 5-year follow-up period, 38 implants presented peri-implant mucositis, accounting for 22.8% of the total, affecting 24 patients (32.4%), while 13 implants (7.8%) in 10 patients (13.5%) were diagnosed with peri-implantitis.

Sixteen of 82 laser-microgrooved implants (19.5%) and 24 of 84 implants without a laser-microgrooved collar (28.5%) presented peri-implant mucositis, while 3 of 82 (3.6%) of laser-microgrooved implants and 10 of 84 (11.9%) implants without a laser-microgrooved collar demonstrated peri-implantitis.

Differences in implant-based incidence of peri-implant diseases between implants with and without a laser-microgrooved collar were statistically significant (P < .05).

The study concluded that in private practice patients enrolled in a professional, controlled oral hygiene regimen, implants with a laser-microgrooved collar presented a statistically significantly lower incidence of peri-implant diseases compared to implants without a laser-microgrooved collar. (Source: International Journal of Oral and Maxillofacial Implants, March/April 2018.)

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