Chin J Dent Res 11 (2008), No. 2 (07.01.2009)
A Comperative Study of the Percentage of Gutta-percha Filled Area of Four Thermal Gutta-percha Canal Obturation Techniques
Huang, Qi Ling / Zhang, Ying / Huang, Shi Guang
Objective: To compare the percentage of gutta-percha filled area (PGFA) in the root canals filled with warm vertical condensation (WVC), Obtura II, ultrasonic lateral condensation (ULC), and cold lateral condensation (CLC).
Methods: Four groups (total 80) of extracted human teeth with single root were instrumented. The prepared canals were randomly divided into four groups (n = 20). Groups 1, 2, 3 and 4 were obturated with CLC, WVC, Obtura II, and ULC, respectively. Horizontal sections were cut at 3, 6 and 9 mm from the apical foramen (AF) of each tooth. The cross-sectional areas of the canal and gutta-percha were measured using an image-analysis program, and the PGFA was calculated.
Results: The PGFAs in both the WVC and Obtura II groups were significantly higher than those of CLC (P < 0.05). There was no difference in the PGFA between the WVC and Obtura II groups (P > 0.05). A significant difference between ULC and CLC in PGFA was only observed at 3 mm from the AF of the root.
Conclusion: WVC and Obtura II produced significantly higher PGFAs than those produced using ULC and CLC techniques
Keywords: gutta-percha filled area, root canal obturation, warm gutta-percha