Related Experiment Video
Updated: Jun 12, 2026
The Establishment of a Murine Mandibular Molar Extraction Socket Healing Model
Published on: January 13, 2023
Five-year follow-up of wide-diameter implants placed in fresh molar extraction sockets in the mandible: immediate
Loris Prosper1, Roberto Crespi, Edoardo Valenti
1Vita-Salute San Raffaele University and Department of Dentistry, San Raffaele Scientific Institute, Milan, Italy.
Purpose:
The aim of this study was to compare the long-term success rates of wide-diameter implants in the mandibular molar region placed immediately after extraction and loaded either immediately or after a 3-month healing period.
Materials And Methods:
In 71 patients, 120 implants were positioned immediately after tooth extraction; 60 implants (immediate loading group) were loaded immediately and 60 were loaded after 3 months (delayed loading group). Radiographic examinations were made at baseline and at 1, 2, 3, 4, and 5 years after implant placement.
Results:
After 5 years, a survival rate of 96.67% was reported for all implants (failure rate, 3.33%). Four implants were lost, two from the immediate loading group and two from the delayed loading group. There were no patient dropouts in either group.
Conclusions:
Wide-diameter implants placed in fresh extraction sockets and loaded immediately or after a delay showed no significant clinical or radiographic differences after 5 years.
