Replacement therapy for periodontitis: pilot radiographic evaluation in a dog model

Area of Science:

• Periodontology
• Veterinary Dentistry
• Regenerative Medicine

Background:

• Periodontitis involves significant bone loss, posing a challenge for regenerative therapies.
• Current treatments like scaling and root planing have limitations in bone regeneration.
• Novel therapeutic approaches are needed to enhance periodontal bone repair.

Purpose of the Study:

• To radiologically assess the impact of beneficial bacteria in treating periodontal bone defects.
• To monitor changes in bone density and alveolar bone level in a canine model.
• To evaluate the efficacy of adjunctive beneficial bacteria therapy compared to standard care.

Main Methods:

• A split-mouth, double-blind randomized trial was conducted on eight beagle dogs with induced periodontitis.
• Periodontal defects were surgically created and treated with either scaling and root planing alone or combined with subgingival beneficial bacteria.
• Intra-oral radiography was used for follow-up assessments at baseline and 3 months post-treatment.

Main Results:

• Significant improvement in bone density within periodontal pockets treated with beneficial bacteria after 12 weeks.
• Non-significant changes in bone density for control sites receiving only scaling and root planing.
• Significant increase in alveolar bone level in the beneficial bacteria group, with no significance in the control group.

Conclusions:

• Subgingival application of beneficial species shows potential for enhancing periodontal bone regeneration.
• Standardized follow-up radiography is a valuable tool for evaluating periodontal treatment outcomes.
• This pilot study supports further investigation into beneficial bacteria as an adjunct therapy for periodontitis.