Marginal Bone Loss Around Machined versus Plasma Sprayed Implant Supported Mandibular Overdenture Cases -A Split- Mouth Randomized Controlled Trial.

Document Type : Original Article

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Lecturer of removable prosthodontic department, faculty of dentistry, British University in Egypt.

Abstract

Abstract
Aim of this study: To compare marginal bone loss around machined and plasma sprayed dental implant collar surfaces after 24 months follow up period in mandibular overdenture cases. Materials and methods: Eight patients with completely edentulous ridges received 32 implants; each patient received 4 implants at the lower arch; 2 machined collar implants were placed at one side and 2 plasma sprayed collar implants were placed at the other side. The implants were loaded 3 months after placement. Radiographic marginal bone loss was measured using CBCT at time of implant placement (baseline), 3,6,12 and 24 months follow up periods. Result: Marginal bone loss was observed for both machined and plasma sprayed implant collars throughout the follow up periods with statistically significant decrease in bone level through 24 months follow up period. Conclusion: Plasma sprayed implant collar promoted better bone repair with less bone loss than did machined implant collar.

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