Obturation materials ppt | 合法醫療器材資訊網

2017年5月8日—Guttapercha•IntroducedbyBowman1867.•Gutta-perchaisanamederivedfromtwowords.“GETAH”-meaninggum“PERTJA”-nameofthe ...

Chloropercha, (Moyco) is a direct descendant, relatively unaltered, of materials in use for nearly a century.

Large standardized G.P. are dissolved in chloroform, producing a sticky mass, similar to ZnO sealer.

Indications: After ledge formation, perforation, unusual curvatures.

Contraindications: May be irritating to periapical tissues.

Disadvantages: carcinogenic Shrinkage Irritation to periapical tissue. Chloropercha has shown to be associated with a greater degree of leakage 75% of the shrinkage in volume occurs with chloropercha.

Method : A master G.P. point is fitted as in the l...