Effect of Er,Cr:YSGG LASER bio-modulation of osteotomy site on peri-implant crestal bone level in lower single fixed detachable prosthesis

Abstract

Objectives: This research was carried out to evaluate the effect of bio-modulation of the osteotomy site with Er,Cr:YSGG LASER on peri-implant crestal bone level changes in cases having edentulous mandible opposed with maxillary natural teeth rehabilitated with fixed detachable prosthesis constructed from BioHPP (High Performance Polymer) using CAD/CAM technology. Materials and Methods:This is a split mouth design study in which ten male patients exhibiting completely edentulous mandibular arch opposed by dentate maxillary arch were rehabilitated with fixed detachable lower single denture supported by six dental implants constructed from BioHPP. The osteotomy segment bio-modulated using Er,Cr:YSGG (2790 nm) LASER was randomly selected and considered as the study group while the other segment (non laser mediated osteotomy) as the control group. Lower single complete dentures were constructed to all participants following the same basic principles. All patients were rehabilitated with fixed detachable lower dentures using Computer-aided design/computer-aided manufacturing (CAD/CAM) technology supported by six dental implants. The application of 3 dimensional (3D) imaging (computerized tomography scan), 3D software for proper treatment planning, and fabrication of computer-generated surgical guides using additive prototyping were followed for all patients. Surgical installation of the implants was performed under strict aseptic conditions The selected osteotomy segment (study group) was biomodulated using Er,Cr:YSGG (2790 nm) LASER and the implants were immediately loaded using the modified existing denture. After 3 months, the patients were scheduled for construction of the definitive prosthesis from which milling was performed in BioHPP polyether-ether ketone (PEEK) disc material. Peri-implant crestal bone level changes were assessed using digital periapical radiographs taken with the standardized long cone paralleling technique at six, twelve and eighteen months after loading. Data collected were statistically analyzed using (ANOVA-test P < 0.05).