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Total Etch Technique and Cavity Isolation
Author(s) -
Fusayama Takao
Publication year - 1992
Publication title -
journal of esthetic and restorative dentistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.919
H-Index - 60
eISSN - 1708-8240
pISSN - 1496-4155
DOI - 10.1111/j.1708-8240.1992.tb00674.x
Subject(s) - isolation (microbiology) , materials science , dentistry , medicine , biology , bioinformatics
In the total etch technique for chemically adhesive composite restorations, the phosphoric acid penetrates only 10 pm or less into the vital dentin with the dentinal tubules being filled with the odontoblast processes. The acid is completely removed by subsequent air‐water jet spray washing. The tubule apertures are perfectly sealed by the protective bonding agent layer with the resin tags adhering to the tubule walls and the resin‐impregnated dentin surface. Isolation of the cavity from moisture contamination is required for only less than a few seconds after drying the etched cavity until the bonding agent coating and after this coating until the composite resin placement. Such a short time for isolation is quite easy even without a rubber dam when a trained assistant is cooperating.