{"product_id":"the-use-of-modified-portland-cement-as-a-dental-core-build-up-material-von-josette-camilleri","title":"The use of modified Portland cement as a dental core build-up material","description":"\u003cp\u003ePortland cement has been introduced in dentistry as  mineral trioxide aggregate (MTA) by adding bismuth  oxide as a radiopacifier. The material has limited  uses in dentistry due to its long setting time and  inadequate compressive strength. Modifications to the  Portland cement were made by addition of calcium  aluminate cement  and by elimination of gypsum which  is used as a set retardant in Portland cement  manufacture. The resultant prototype materials were  composed of tricalcium silicate, dicalcium silicate  and tricalcium aluminate. On hydration calcium  hydroxide was produced which accounted for the  material biocompatibility.  The materials exhibited a  clinically acceptable setting time, adequate  compressive strength, high pH, and good marginal  adaptation and acid resistance. The cements were very  reactive and were effected by media used routinely in  specimen preparation. In addition there were no  adequate standards available for testing materials  for use as root-end filling materials.\u003c\/p\u003e\u003cdiv class=\"aw-variant-hidden-subtitle-div\" id=\"aw-variant-subtitle-9783838355863\"\u003e\u003ch3\u003e\u003c\/h3\u003e\u003c\/div\u003e","brand":"Autorenwelt Shop","offers":[{"title":"Softcover - 9783838355863","offer_id":39469159972957,"sku":"9783838355863","price":79.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/0622\/files\/2326de82-197f-4680-85e0-680922cbcfe3.jpg?v=1775627081","url":"https:\/\/shop.autorenwelt.de\/products\/the-use-of-modified-portland-cement-as-a-dental-core-build-up-material-von-josette-camilleri","provider":"Autorenwelt Shop","version":"1.0","type":"link"}