Dental Implant Placement

The primary aim of this randomized clinical trial is to evaluate the influence of subcrestal implant placement depth (-2 mm vs -4 mm) on peri-implant marginal bone level changes, including marginal bone loss and bone remodeling. Secondary outcomes include implant success, peri-implant probing depth (PPD), and bleeding on probing (BoP). Partially edentulous patients requiring fixed implant-supported prosthetic rehabilitation with two implants in posterior maxillary or mandibular regions will be included. Implants will be placed subcrestally at either -2 mm or -4 mm from the bone crest, following a submerged healing protocol. Allocation to insertion depth will be randomized. Marginal bone level changes will be assessed using standardized periapical radiographs at second-stage surgery, prosthesis placement, and at 1, 3, 6, and 12 months after functional loading. PPD and BoP will be recorded at the same time points.

This clinical study aims to evaluate the clinical and radiographic outcomes of delayed dental implant placement following socket preservation using an injectable alloplastic bone graft material. The study will include patients who require tooth extraction and are candidates for implant placement. After tooth extraction, the socket will be preserved using the bone graft material, and dental implants will be placed after a healing period. Clinical and radiographic assessments will be performed to evaluate bone quality, bone height, and implant stability. The goal of this study is to determine the effectiveness of injectable alloplastic bone grafts in maintaining the alveolar ridge and improving the success of delayed implant placement.