Esthetic treatment of severely decayed primary teeth is one of the greatest challenges for pediatric dentist. There are different types of restorations for complete crown coverage. These restoration technique includes stainless steel crowns, polycarboate crown, acid etch crown etc. Each of these techniques presents technical, functional or esthetic compromises that complicate their efficient and effective usage. Due to a increasing in esthetic and concerns about toxic and allergic reactions to certain alloys, zirconia was proposed as a new ceramic material in the later part of 20th century. It has become a popular alternative to alumina as biomaterial and is being used in dental applications. This article presents a brief history, properties, dental applications and tooth preparation of zirconia crown. Subject Area: dentistry Keywords: stainless steel crown, zirconia, dental caries, primary molars
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