Clinical Outcomes of Maxillary Anterior Postextraction Socket Implants with Immediate Provisional Restorations Using a Novel Macro Hybrid Implant Design: An 18 to 24 Month Single Cohort Prospective Study.
Extraction and immediate implant placement/restoration in the esthetic zone is clinically challenging; benefits include fewer surgical appointments and maintenance of peri implant soft tissues throughout the treatment period, and limitations include gingival recession and bone dehiscence during surgery. Macro hybrid implants (large diameter apical/narrow diameter occlusal) were placed in 19 patients immediately following the extraction of hopeless maxillary anterior teeth. Immediate restorations were fabricated without occlusal contacts. Pre and postplacement cone beam computed tomography (CBCT) scans were taken. Nineteen implants were available for recall 13 to 25 months postoperatively. The overall implant cumulative survival rate was 100% (range: 13 to 25 months, mean: 19 months) and mean insertion torque value was 65 Ncm. Mean Pink Esthetic Score was 12.63 at 6 months, and was 13 at the 18 to 24 month follow up. Mean mesial and distal tooth to implant distances immediately after implant placement were 2.55 1.29 mm and 2.29 0.82 mm, respectively. Interproximal bone crest width, distance, and height were maintained at implant platforms, mesially and distally, 18 to 24 months postoperative. The results of this study indicated that the macro hybrid implant geometry for this immediate surgical/restorative protocol provided excellent and stable 2 year results relative to implant survival (100% labial plate thickness via CBCT evaluations, tooth to implant distances immediately post implant placement, PES, and interproximal bone crest width, distance, and heights, which were maintained at the implant platforms.
The International journal of periodontics restorative dentistry