In vitro study of effect of solvent on root canal retreatment

• Main Authors: Oyama Kazumi Onaga Nagayama (Author), Siqueira Evandro Luiz (Author), Santos Marcelo dos (Author)
• Format: Book
• Published: Fundação Odontológica de Ribeirão Preto, 2002-01-01T00:00:00Z.
• Subjects: article
• Online Access: Connect to this object online.
• Notes: 0103-6440
• Keywords: gutta-percha solvents; organic solvents; root canal retreatment; Dentistry; RK1-715
• Source: Brazilian Dental Journal, Vol 13, Iss 3, Pp 208-211 (2002)

The aim of this study was to assess the effectiveness of five different solvents: xylol, eucalyptol, halothane, chloroform and orange oil on softening gutta-percha in simulated root canals. One drop of solvent was placed into a reservoir made in a simulated canal whose channel was previously instrumented and filled with gutta-percha and N-Rickert sealer. After 5 min, softening was evaluated for each solvent by the penetration of a spreader while applying force with a 442 Instron apparatus to reach a depth of 5 mm. The results were analyzed statistically by the Kruskal-Wallis test. Xylol and orange oil were better in softening gutta-percha than the other solvents. There was no significant difference between xylol and orange oil, but these were statistically different from eucalyptol, halothane and chloroform (p<0.01).