Sealing ability of five different retrograde filling materials
1996; Elsevier BV; Volume: 22; Issue: 9 Linguagem: Inglês
10.1016/s0099-2399(96)80078-1
ISSN1878-3554
AutoresFrank Gerhards, Wilfried Wagner,
Tópico(s)Epoxy Resin Curing Processes
ResumoThe sealing ability of Amalgam, Harvard-Cement, Diaket, gold-leaf, and Ketac-Endo as retrofilling materials was investigated. Paper cones were fixed with Harvard-Cement in the instrumented roots of 100 extracted human incisors. Apicectomy was performed and a 2-mm-deep retrograde cavity was prepared. Teeth were assigned to five groups ( n = 20); each group received a different filling material. Surfaces of the roots were isolated with nail polish. Teeth were stored in 1% methylene blue dye for 72 h. Roots were sectioned, and the depth of dye penetration was evaluated through a stereomicroscope. Retrofills with Ketac-Endo showed significantly less leakage compared with amalgam. There was no significant difference between the amalgam and Diaket groups. The sealing ability of Harvard-Cement and gold foil was lower than amalgam. It was concluded that retrograde fillings with Ketac-Endo or Diaket can be considered as alternatives for amalg
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