Bone Healing at Functionally Loaded and Unloaded Screw-Shaped Implants Supporting Single Crowns: A Histomorphometric...

Area of Science:

• Dental Implantology
• Biomaterials Science
• Oral Surgery

Background:

• Osseointegration is crucial for dental implant success.
• The timing of implant loading can influence healing outcomes.
• Moderately rough implant surfaces are commonly used to enhance bone integration.

Purpose of the Study:

• To histologically and histomorphometrically evaluate the effect of delayed loading on implant healing.
• To compare bone-to-implant contact and bone density between loaded and unloaded implants.

Main Methods:

• Two screw-shaped titanium implants were placed in the alveolar ridge of 16 patients.
• One implant per patient was loaded after 2 months, while the other remained unloaded.
• Histomorphometric analysis was performed on biopsy specimens after 4 months of healing.

Main Results:

• No statistically significant differences were found in bone-to-implant contact between loaded (86.8%) and unloaded (84.6%) implants.
• New bone formation and bone density were comparable between loaded and unloaded sites.
• A slight tendency towards higher osseointegration and bone density was observed in loaded implants.

Conclusions:

• Delayed loading of moderately rough dental implants does not significantly impact osseointegration.
• The findings suggest that delayed loading is a safe and effective protocol.
• Further research may explore optimal loading protocols for different implant surface characteristics.