title: CO2 laser surface treatment of failed dental implants for re-implantation: an animal study.
abstract: The aim of the present study was to evaluate the success rate of failed implants re-implanted after surface treatment with CO2 laser. Despite the widespread use of dental implants, there are many incidents of failures. It is believed that lasers can be applied to decontaminate the implant surface without damaging the implant. Ten dental implants that had failed for various reasons other than fracture or surface abrasion were subjected to CO2 laser surface treatment and randomly placed in the maxillae of dogs. Three failed implants were also placed as the negative controls after irrigation with saline solution without laser surface treatment. The stability of the implants was evaluated by the use of the Periotest values (PTVs) on the first day after surgery and at 1, 3, and 6 months post-operatively. The mean PTVs of treated implants increased at the first month interval, indicating a decrease in implant stability due to inflammation followed by healing of the tissue. At 3 and 6 months, the mean PTVs decreased compared to the 1-month interval (P < 0.05), indicating improved implant stability. The mean PTVs increased in the negative control group compared to baseline (P < 0.05). Independent t-test showed that the mean PTVs of treated implants were significantly lower than control group at 3 and 6 months after implant placement (P < 0.05). Based on the PTVs, re-implantation of failed implants in Jack Russell Terrier dogs after CO2 laser surface debridement is associated with a high success rate in terms of implant stability.
authors.affiliation: Dental Research Center, Department of Restorative Dentistry, Dental School, Hamadan University of Medical Sciences, Hamadan, Iran.
authors.forename: Shahin
authors.initials: S
authors.lastname: Kasraei
authors.affiliation: Dental Research Center, Department of Periodontics, Dental School, Hamadan University of Medical Sciences, Hamadan, Iran. p.torkzaban@umsha.ac.ir.
authors.forename: Parviz
authors.initials: P
authors.lastname: Torkzaban
authors.affiliation: Department of Periodontics, Dental School, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
authors.forename: Bahar
authors.initials: B
authors.lastname: Shams
authors.affiliation: Department of Anatomy, Faculty of Medicine, Hamadan University of Medical Sciences, Hamadan, Iran.
authors.forename: Seyed Mohammad
authors.initials: SM
authors.lastname: Hosseinipanah
authors.affiliation: Modeling of Noncommunicable Disease Research Center, Department of Biostatistics, Hamadan University of Medical Sciences, Hamadan, Iran.
authors.forename: Maryam
authors.initials: M
authors.lastname: Farhadian
mesh_terms: D000818:Animals; D003758:Dental Implantation, Endosseous / Q000379:methods*; D017268:Dental Prosthesis Retention; D004285:Dogs; D054020:Lasers, Gas / Q000627:therapeutic use*; D028022:Low-Level Light Therapy / Q000379:methods*; D008297:Male; D008437:Maxilla; D016348:Osseointegration / Q000528:radiation effects; D011897:Random Allocation; D014945:Wound Healing
keywords: Carbon dioxide laser; Debridement; Dental implants; Dogs; Laser treatment