Effect of Photobiomodulation Therapy on Peri-Implant Bone Healing in Extra-Short Implants in a Rabbit Model: A Pilot...

Area of Science:

• Biomaterials Science
• Regenerative Medicine
• Dental Implantology

Background:

• The efficacy of photobiomodulation therapy (PBMT) on peri-implant bone healing, particularly with extra-short implants, requires further investigation.
• Optimizing energy levels for PBMT is crucial for maximizing therapeutic benefits in dental implantology.

Purpose of the Study:

• To evaluate the impact of varying PBMT energy levels on peri-implant bone healing around extra-short implants.
• To assess the effects of PBMT on bone-implant contact (BIC) and implant stability quotient (ISQ) in a rabbit model.

Main Methods:

• Extra-short implants were placed in rabbit tibias, followed by the application of PBMT at four distinct energy levels (5, 10, 20, 25 J/cm²) or no treatment (control).
• Bone-implant contact (BIC) length and rate were measured after 30 days.
• Implant stability was assessed using resonance frequency analysis (ISQ) on days 1 and 30.

Main Results:

• PBMT significantly increased BIC length and rate at 20 and 25 J/cm² (p < 0.001).
• Implant stability quotient (ISQ) values showed significant increases from day 1 to day 30 (p < 0.001).
• Higher ISQ values were observed on day 30 in the groups treated with 20 and 25 J/cm² PBMT compared to other groups (p < 0.001).

Conclusions:

• PBMT effectively promotes peri-implant bone healing in extra-short implants.
• Optimal PBMT energy levels of 20 and 25 J/cm² significantly enhance bone regeneration and implant stability.