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International Journal of Periodontics & Restorative Dentistry



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Int J Periodontics Restorative Dent 32 (2012), No. 4     9. July 2012
Int J Periodontics Restorative Dent 32 (2012), No. 4  (09.07.2012)

Online Article, Page 431, PubMed:22577656

Online Article: A Three-Die Cast Technique for Duplication Free Gingival Form in Zirconia Crowns: Two Case Reports
Nozawa, Takeshi / Tanaka, Koji / Tsurumaki, Shunzo / Ookame, Yasuhisa / Enomoto, Hiroaki / Ito, Koichi
This report describes a duplication technique of free gingival form from a provisional restoration to a zirconia crown. Three die casts were manufactured from a silicone impression with an acrylic resin ring tray. The first die cast was for the zirconia framework, the second for the provisionalized transfer coping, and the third for relining the provisional restoration. A free gingival impression was taken using a provisionalized transfer coping, and a soft gingival cast was manufactured. The depth of free gingival transparency was measured using a zirconia shade plate. Then, the zirconia framework was customized to allow for subgingival porcelain space. This technique seems to contribute to the clinicallaboratory interface in computer-aided design/computer-assisted manufacture restorations.