Machined Versus Rough-Surfaced Collar Implants Retaining Mandibular Over-Denture in Controlled Type II Diabetes Mellitus Patients

Abstract

The purpose of this study was to evaluate marginal bone loss in implant assisted mandibular overdenture using two types of collar designs. Ten patients were selected from among those attending the out-patient clinic, Prosthodontic Department, Faculty of Dentistry, Ain Shams University to participate in this study. Patients were thoroughly examined to reduce human variables and eliminate any factor that might affect the results of this study. All patients had controlled type II diabetes mellitus with Hb A1c ≤ 7. Patients were rehabilitated by maxillary complete denture and implant assisted mandibular overdenture. Standard clinical and laboratory techniques were followed for denture construction for all patients. Each patient received both types of the implants on each side of the mandible. The groups were enrolled as follow. Group I: Ten implants with smooth collar were inserted in the right side of the mandible in the canine region. Group II: Ten implants with rough collar were inserted in the left side of the mandible in the canine region. Surgical placement of the implant was performed under strict aseptic conditions and delayed loading protocol was followed. Patients were recalled frequently for post-insertion inspection and adjustments. Follow-up visits were scheduled at time of denture insertion and loading, six, and twelve months for inspection of the prosthesis and radiographic evaluation of the marginal bone loss. Marginal bone height