Journal of Oral Science
Online ISSN : 1880-4926
Print ISSN : 1343-4934
ISSN-L : 1343-4934
Case Report
A retainer-free obturator prosthesis in a fully dentulous patient with palatal defects
Mamoru MurakamiYasuhiro NishiTakaharu ShimizuMasahiro Nishimura
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2020 Volume 62 Issue 1 Pages 122-124


Retainers are the most important component in the success of an obturator prosthesis. However, the optimal retainer design for a fully dentulous patient with palatal defect needs four widely separated retainers—resulting in unsatisfactory esthetics—and regulates engagement of deep undercuts of the defect cavity, which leads to an inadequate palatal seal. A new retainer-free obturator prosthesis that closes only the defect cavity and is retained by undercuts within the defect was designed and proved useful for problems caused by a clasp-retained obturator prosthesis for a fully dentulous patient with palatal defects.

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© 2020 by Nihon University School of Dentistry
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