Application of Ce-TZP/Al₂O₃ nanocomposite to the framework of an implant-fixed complete dental prosthesis and a complete denture

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• 作者：Yoshiyuki Hagiwara ; DDS ; PhD^a ; ^{hagiwara.yoshiyuki@nihon-u.ac.jp" class="auth_mail" title="E-mail the corresponding author} ; Kiyoshi Nakajima ; CDT^b ; ¹ ; ^{knd-knd@memoad.jp" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Ceria-stabilized zirconia/alumina nanocomposite ; Implant-supported complete fixed prostheses removable dental prosthesis ; Complete denture framework ; Computer-aided design/computer-aided manufacturing ; Implant-supported complete fixed prostheses ; Removable dental prosthesis
• 刊名：Journal of Prosthodontic Research
• 出版年：2016
• 出版时间：October 2016
• 年：2016
• 卷：60
• 期：4
• 页码：337-343
• 全文大小：2027 K

文摘

A 69-year-old Japanese male visited Nihon University Dental Hospital for refabrication of his mandibular implant-supported complete fixed prosthesis (ISCFPD) and maxillary complete denture, which had been fabricated 15 years previously. In this case, Ce-TZP/Al₂O₃ nanocomposite (Ce-TZP/A) was applied to the framework of the mandibular ISCFPD and maxillary complete denture. Three years after deliver of the framework, no particularly notable biological or prosthetic complications were observed, and a high level of patient satisfaction had been achieved.

Discussion

Conventional ISCFPD frameworks were fabricated by casting gold alloys; however, with the recent advancement of CAD/CAM technology, titanium (Ti) or yttria tetragonal zirconia polycrystal (Y-TZP) frameworks have become more common. In contrast, the main fabrication method for Ti or Co-Cr frameworks of removable dental prostheses has shifted from the conventional casting method to CAD/CAM fabrication. Ce-TZP/A, which was chosen as the framework material this time, shows higher strength and greater toughness than Y-TZP. However, since it has a low light-transmitting property and exhibits an opaque white color, the range of its application in fixed prostheses, particularly in the esthetic area, is limited.

Conclusion

We described a case in which Ce-TZP/A was applied to the frameworks of a mandibular ISCFPD and a maxillary complete denture. No particularly notable biological or prosthetic complications were observed in the mandibular ISCFPD or the maxillary complete denture, and a high level of patient satisfaction was achieved. Medium- and long-term observations with a greater number of cases are essential to obtain information concerning various phenomena related to this procedure.