A study of the apical microleakage of a gallium alloy as a retrograde filling material.
The feasibility of utilizing mercury-free Gallium alloy GF for retrograde filling was investigated by comparing apical microleakage in 184 extracted human teeth. The teeth were divided into four experimental and two control groups. Three experimental groups were apical cavity retrofillings with the Gallium alloy GF, a mercury-containing amalgam, and a glass ionomer. The fourth experimental group was filled with gutta-percha and heat-burnished after apicoectomy. After 24 h, 1 wk, 4 wk, and 12 wk immersion in dye solution, the roots were vertically sectioned, and the deepest point of dye penetration was recorded. The glass ionomer showed the least leakage, followed by the amalgam group and the gallium group (no significant difference). The gutta-percha heat-burnished group displayed the greatest leakage. Gallium alloy GF was shown to have an equivalent sealing potential to dental amalgam for a retrograde filling material.
Department of Endodontics and Periodontics, Tsurumi University, School of Dental Medicine, Yokohama, Japan.
N
N
Hosoya
E P
EP
Lautenschlager
E H
EH
Greener
D000704:Analysis of Variance; D003722:Dental Alloys / Q000737:chemistry*; D003723:Dental Amalgam / Q000737:chemistry; D003763:Dental Leakage; D005708:Gallium; D005899:Glass Ionomer Cements; D006171:Gutta-Percha; D006801:Humans; D012184:Retrograde Obturation; D012387:Root Canal Filling Materials
D003722:Dental Alloys; D005899:Glass Ionomer Cements; D012387:Root Canal Filling Materials; C062270:Shofu Hybond; C036886:tytin; D003723:Dental Amalgam; D006171:Gutta-Percha; D005708:Gallium