Steroids reduce the periapical inflammatory and neural changes after pulpectomy

Area of Science:

• Veterinary Dentistry
• Endodontics
• Pharmacology

Background:

• Root canal treatment aims to preserve tooth function.
• Periapical inflammation and neural changes can occur post-treatment.
• Systemic corticosteroids are used to manage inflammation.

Purpose of the Study:

• To investigate the effect of dexamethasone on periapical inflammation and neural sprouting following root canal treatment in ferret canine teeth.
• To evaluate the impact of systemic steroids on healing and tissue response in the periapical region.

Main Methods:

• Root canal treatment was performed on ferret canine teeth under general anesthesia.
• Six ferrets received daily dexamethasone (0.5 mg/kg); six served as controls.
• Histological examination of periapical tissues was conducted three months post-treatment to assess inflammation and neural sprouting.

Main Results:

• Periapical lesions in steroid-treated animals were 30% smaller than in untreated controls.
• Innervation density in the subapical region of steroid-treated animals was reduced compared to untreated animals.
• A correlation was observed between reduced periapical inflammation and decreased neural sprouting.

Conclusions:

• Systemic dexamethasone effectively reduces periapical inflammation after root canal treatment in ferrets.
• Steroid administration is associated with a reduction in neural sprouting in the periapical and subapical regions.
• These findings suggest a potential role for corticosteroids in managing post-endodontic periapical tissue responses.