Sequential morphometric evaluation at UnicCa^® and DCD^® implant surfaces. An experimental study in the dog

Area of Science:

• Biomaterials Science
• Dental Implantology
• Tissue Engineering

Background:

• Dental implant surface modifications are crucial for osseointegration.
• Nanotechnology offers novel approaches to enhance implant biocompatibility and bone healing.

Purpose of the Study:

• To compare the tissue response adjacent to two nanotechnologically modified implant surfaces.
• To evaluate the healing process at different time points (1, 2, 4, and 8 weeks).

Main Methods:

• Two implant surface types, UnicCa® (calcium ion modification) and DCD® (calcium phosphate deposition), were implanted in beagle dogs.
• Histomorphometric analysis assessed bone formation, soft tissue, and vascularization around implants.
• Biopsies were collected at 1, 2, 4, and 8 weeks post-surgery.

Main Results:

• New bone formation progressively increased from week 1 to week 8 for both implant surfaces.
• Soft tissues, initially a provisional matrix, were gradually replaced by immature and mature bone marrow.
• Resorption of pristine bone was observed adjacent to the implants.

Conclusions:

• Both nanotechnologically modified surfaces (UnicCa® and DCD®) demonstrated effective bone regeneration.
• The healing pattern involved initial soft tissue formation followed by robust new bone and marrow development.
• These findings support the use of nanomodified surfaces for improved dental implant osseointegration.