AIM: In the present study, we evaluate the efficiency of four kinds of oil as solvents for softening gutta-percha in root canal retreatment procedures. The performance of grapefruit, tangerine, lime, and lemon oils specifically were evaluated and compared to chloroform. METHODS: Eighty-four cylinder-shaped glass tubes (5 × 30 mm) were filled with gutta-percha. A total of 0.1 mL solvent was added to the upper part of the glass tubes. After 5 min, the spreader attached to the universal testing machine was moved downward through gutta-percha with header speed of 5 mm/min into a depth of 5 mm. An initial depth of spreader penetration without force produced was recorded in millimeters. The load used to penetrate the spreader into the 5-mm depth was recorded in Newton. RESULTS: The results of the surface-dissolving depth and maximum force used to penetrate the spreader to 5 mm revealed that chloroform was significantly the best solvent in softening gutta-percha (P < 0.05), followed by grapefruit oil and tangerine oil, while the least effective solvents were lime oil and lemon oil. CONCLUSIONS: Under the conditions of the present study, grapefruit oil and tangerine oil performed best as gutta-perch solvents among four natural oils.
RCT Entities:
AIM: In the present study, we evaluate the efficiency of four kinds of oil as solvents for softening gutta-percha in root canal retreatment procedures. The performance of grapefruit, tangerine, lime, and lemon oils specifically were evaluated and compared to chloroform. METHODS: Eighty-four cylinder-shaped glass tubes (5 × 30 mm) were filled with gutta-percha. A total of 0.1 mL solvent was added to the upper part of the glass tubes. After 5 min, the spreader attached to the universal testing machine was moved downward through gutta-percha with header speed of 5 mm/min into a depth of 5 mm. An initial depth of spreader penetration without force produced was recorded in millimeters. The load used to penetrate the spreader into the 5-mm depth was recorded in Newton. RESULTS: The results of the surface-dissolving depth and maximum force used to penetrate the spreader to 5 mm revealed that chloroform was significantly the best solvent in softening gutta-percha (P < 0.05), followed by grapefruitoil and tangerineoil, while the least effective solvents were limeoil and lemonoil. CONCLUSIONS: Under the conditions of the present study, grapefruitoil and tangerineoil performed best as gutta-perch solvents among four natural oils.
Authors: Mohmed Isaqali Karobari; Abdul Habeeb Adil; Ali A Assiry; Syed Nahid Basheer; Tahir Yusuf Noorani; Ajinkya M Pawar; Anand Marya; Pietro Messina; Giuseppe Alessandro Scardina Journal: Materials (Basel) Date: 2022-04-25 Impact factor: 3.748
Authors: Patricia Fonseca de Souza; Leonardo Cantanhede Oliveira Goncalves; Andre Augusto Franco Marques; Emilio Carlos Sponchiado Junior; Lucas da Fonseca Roberti Garcia; Fredson Marcio Acris de Carvalho Journal: Eur J Dent Date: 2015 Apr-Jun