Analysis of continuous-wave obturation using a single-cone and hybrid technique

Area of Science:

• Endodontics
• Dental Materials Science

Background:

• Effective root canal obturation is crucial for endodontic treatment success.
• Gutta-percha is a widely used root canal filling material.
• Understanding obturation techniques and their impact on adaptation is essential.

Purpose of the Study:

• To compare the adaptation of gutta-percha to prepared root canal walls using two obturation techniques.
• To evaluate the influence of System-B plugger depth on the adaptation of gutta-percha fillings.

Main Methods:

• Fifty-six human mandibular molars were instrumented and divided into two obturation groups: single-cone continuous-wave and a hybrid technique.
• Teeth were subgrouped based on System-B plugger depth (< 3.5 mm, 3.5–4.5 mm, > 4.5 mm).
• Roots were sectioned, stained, and photographed to evaluate gutta-percha adaptation to canal walls.

Main Results:

• No statistically significant difference in gutta-percha adaptation was observed between the two obturation techniques at 1 mm and 3 mm sections.
• Optimal adaptation was achieved when the System-B plugger depth was between 3.5 mm and 4.5 mm from the working length.
• All samples demonstrated gutta-percha adaptation to the prepared canal walls.

Conclusions:

• Both single-cone continuous-wave and hybrid obturation techniques provide comparable adaptation of gutta-percha.
• System-B plugger depth plays a role in achieving optimal gutta-percha adaptation within root canals.
• Further research may explore other factors influencing obturation quality.