The bond between porcelain and metal in a ceramometal (porcelain bonded to metal) crown is

2 explanations

1. 

   docroy

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2. 

   docroy

   i think its equally chemical and mechanical dental decks P.137 " r. blasting the cast metal restoration allows porcelain to mechanically bond to metal.The mixing of oxi- dized metal layers with porcelain oxides allows the porcelain to chemically bond to meta

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