Pulp reactions to open cavities later restored with silicate cement.

摘要: Some early reports have indicated that silicate cements are highly irritating to the pulp.'Yet Barker5 has reported reactions took place under were not sufficiently severe indicate death of pulp might result. Shroff6 considered placement a properly mixed synthetic porcelain did produce complete necrosis in common instance, provided due care was exercised during cavity preparation and exceptional depth. Van Huysen Boyd7 concurred. More recently, investgators8 using rats' incisors effect cement on always severe. Mitchell,9 subcutaneous implantation technique rats, moderate soft-tissue reaction cement. Kozam Burnett,10 windows cut incisors, suggested if acidic components affect significantly, they would be sufficient excess deep as soften dentin between pulp. Mitchell, Buonocore, Shazer," monkeys, mild or minimal three when floor thicker than 400 [t, increased thickness decreased 50 pt exposure. Most research this field been done by inserting into freshly prepared cavities sound teeth human beings animals. In actual practice, carious may developed dentinal sclerosis secondary usually restored, it is assumed most protects from restorative material. A study Weider, Schour, Mohammed'2 depth significant factor determining amount formed rat molars. Less different filling materials exposure oral fluids. Zander Pejkol3 had earlier 3-month interval allowed prior placing order permit irregular formation for protection. It purpose induce development, amount, morphology beneath deciduous permanent left unrestored 3 months, also modifying accumulated irritation restorations after 1and 2-week periods. As controls, evaluate studies