| 摘要 |
PURPOSE:To obtain the title sealer capable of completely sealing a root apex part, removable in a case of requiring both root canal fillings, comprising gutta percha and/or polyisoprene, zinc oxide. liquid paraffin, white wax and barium sulfate or iodoform. CONSTITUTION:(A) Gutta percha and/or polyisoprene is blended with (B) zinc oxide. (C) liquid paraffin, (D) white wax and (E) barium sulfate or iodoform in the ratio of preferably 3-20wt.% component A, 30-70wt.% component B, 3-15wt.% component C, 2-26-wt.% component D and 2-30wt.% component E to give a dental sealer for root canal filling which has good compatibility with gutta percha point because the sealer uses a material having the same quality as that of gutta percha point as a base material, is stuck fast, inserted into a root apex part, can completely seal and can simultaneously remove the point and the sealer by using a small amount of chloroform when both root canal fillings are required because of 40-50 deg.C softening temperature.
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