Marginal Bone Loss around Implant-Retaining Overdentures versus Implant-Supported Fixed Prostheses 12-Month...

Area of Science:

• Dental Implantology
• Prosthodontics
• Oral Surgery

Background:

• Limited comparative data exists on marginal bone loss (MBL) around implant-retaining overdentures (IODs) versus implant-supported fixed prostheses (FPs).
• Understanding osseointegration and MBL around non-submerged dental implants is crucial for long-term success.

Purpose of the Study:

• To compare mean MBL and radiographic bone-implant interface contact (r-BIIC) between IODs and FPs.
• To investigate factors influencing MBL and r-BIIC in non-submerged dental implants.

Main Methods:

• Retrospective analysis of MBL and r-BIIC at mesial and distal sites.
• Measurements taken immediately after prosthetic delivery and at one-year follow-up.
• Comparison of outcomes between IOD and FP groups, considering implant location and gender.

Main Results:

• The IOD group exhibited significantly higher mean MBL and MBL changes compared to the FP group.
• The FP group demonstrated a significantly higher mean percentage of r-BIIC.
• Gender was a significant predictor for MBL in the FP group and r-BIIC in both groups, while implant location was significant for MBL in the IOD group.

Conclusions:

• Non-submerged dental implants restored with both FPs and IODs achieve stable bone remodeling one year post-prosthetic delivery.
• Fixed prostheses may offer an advantage in minimizing marginal bone loss compared to implant-retaining overdentures.