The Purpose of this study is to is to compare the effect of occlusal adjustment using T scan III and articulating paper on the vertical bone height changes around dental implants supporting lower single fixed detachable hybrid prosthesis

Material and method: Fourteen male patients having completely edentulous mandibular arch and full dentate in the maxillary arch were selected from the outpatient clinic prosthodontics department faculty of dentistry Ain Shams University. All Patients were rehabilitated with six implants retaining mandibular fixed detachable prosthesis designed by CAD/CAM. According to the method of detection of occlusal errors and adjustment the patients were divided into two groups , Group I where T scan III device was used to detect occlusal errors and group II where articulating paper was used and occlusal adjustment were made according to the tool used. Radiographic evaluation using CBCT was done to evaluate the vertical bone loss around the supporting implant throughout the follow –up period.
Results : There was increase in vertical bone loss in group I and II through-out the follow up period and on comparing the two groups there was a significant increase in the vertical bone height changes around the supporting implants in group I after one year from the follow up period




Conclusion : Within the limitation of this study, it could be concluded that the use of t scan III device allow for better occlusal adjustment in case of implant supported lower single denture than articulating paper and resulting in less vertical bone loss