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Effect of a platform switch and a laser-microgrooved coronal design on short dental implants: A multicenter
Renzo Guarnieri1,2, Luca Savio3, Alessandro Bermond Des Ambrois4
1Department of Oral and Maxillofacial Sciences, Sapienza University of Rome, Italy.
Background:
The presence of severe atrophy in proximity to the maxillary sinus or the inferior alveolar nerve is a primary indication for the use of short dental implants. The placement of standard-length implants in such cases often requires complex regenerative procedures, leading to prolonged healing time and an increased invasiveness of the surgical procedure.
Objectives:
The aim of the study was to evaluate crestal bone remodeling, implant success, complications, and implantand patient-related risk factors associated with the use of short, platform-switched dental implants with a laser-microgrooved collar for prosthetic rehabilitation of atrophic posterior jaws.
Material And Methods:
This multicenter retrospective study involved a chart review of medical records from 5 private dental clinics. Variables such as age, sex, smoking, periodontal disease, systemic diseases, medications, anatomical location, implant diameter and length, crown-to-implant ratio, and type of placement were collected. A total of 132 short implants placed in 84 patients were analyzed, with a follow-up of 3-5 years (mean (M): 4.2 ±0.8 years).
Results:
Eight short implants failed, including 62.5% of those affected by peri-implantitis. The implantlevel and patient-level success rates were 93.9% and 95.0%, respectively. The mean crestal bone loss (CBL) was 0.385 ±0.7 mm. Univariate regression analysis revealed that female sex, smoking status and periodontal disease were significantly associated with implant success at both the implant and patient levels.
Conclusions:
Platform-switched short implants with a laser-microgrooved coronal design demonstrated high success rates in atrophic posterior jaws after 3-5 years of function, with stable crestal bone levels.

