原著
歯科用X線撮影による根管充塡材の写真濃度の比較研究
キーワード:
root canal materials,
ISO,
photography-density measurements,
radiopacity,
Aluminum step wedge
2001 年 22 巻 2 号 p. 170-174
詳細
2001 年 22 巻 2 号 p. 170-174
Abstract : The purpose of this study was to compare the physical property (radiopacity) of six root canal materials using in the photographic density of D-speed dental film.
This study, performed in accordance with ISO 6877, used the following six root canal materials ;
(ⅰ) Ketac-Endo, (ⅱ) AH-Plus, (ⅲ) Canals N, (ⅳ) Pulpdent root canal sealer, (ⅴ) GP sealer, (ⅵ) Obturation Gutta Sofi. Photography-Density measurements were assessed using a Fuji Prescale Densitometer FPD-305. 6 mm of Aluminum step wedge was used as a bench-mark. When tested in the manner described in Clause 6.6.2, “All materials shall show a radiopacity not less than that equivalent to 6 mm of aluminurn,” in accordance with ISO 6877. The radiopacity decreased in the following order : Canals N, GP sealer, Pulpdent root canal sealer, Obturation Gutta Soft, AH-Plus, and Ketac-Endo. The results suggest that all materials showed a radiopacity not less than that equivqlent to 6 mm of aluminum.
