Comparison of different techniques for obturating experimental internal resorptive cavities

Area of Science:

• Endodontics
• Dental Materials Science

Background:

• Internal root resorption presents a significant challenge in endodontic therapy.
• Effective obturation of resorbed areas is crucial for long-term treatment success.

Purpose of the Study:

• To compare the efficacy of four different obturation techniques in filling simulated internal resorptions.
• To evaluate the quality of root canal filling in resorbed areas using various methods.

Main Methods:

• Forty extracted maxillary central incisors were prepared and simulated internal resorptions were created.
• Specimens were obturated using lateral compaction, hybrid technique, Obtura II, or Thermafil with AH26 sealer.
• Radiographic and stereomicroscopic analyses were performed to assess obturation quality.

Main Results:

• Obtura II technique resulted in the most effective filling of simulated internal resorptions.
• Gutta-percha was the predominant filling material observed with the Obtura II technique.
• Significant differences in obturation quality were found between Obtura II and the other evaluated techniques (P < 0.05).

Conclusions:

• The Obtura II system is highly effective for obturating internal resorptions in root canals.
• This technique offers a significant advantage over lateral compaction, hybrid, and Thermafil methods for managing resorbed root canal spaces.