Lightweight Opened Hollow Bulb Obturator Using a Precise Positioning Method of Metal Framework in Patients with Partial Maxillectomy: a Case Report A clinical report

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Hai Hoang Phan
Visaluk Punyawattananon
Doan Minh Tri
Natdhanai Chotprasert
Kawin Sipiyaruk

Abstract

Successes of using an obturator in rehabilitation for a maxillectomy patient depend on size and location of defect. Large maxillary defects with a few remaining abutments located in a relatively straight line lead to a decrease in support, stability, and retention of prostheses due to unfavorable leverage. To minimize this leverage, weight reduction of a prosthesis should be considered. In this clinical report, a patient with a large hemimaxillectomy defect was rehabilitated with a one-piece opened hollow bulb obturator using a cast metal framework. A special tray with opening access was used for making a functional impression of the defect site to obtain a precise working cast. Afterwards, the cast was modified at the defect site to simulate the contour of normal ridge using a mixture of plaster and pumice in order to properly position the meshwork. These procedures, including the predetermined reduction of acrylic thickness, resulted in a lightweight obturator with improvement of stability, retention, and function.

Article Details

How to Cite
1.
Phan HH, Punyawattananon V, Tri DM, Chotprasert N, Sipiyaruk K. Lightweight Opened Hollow Bulb Obturator Using a Precise Positioning Method of Metal Framework in Patients with Partial Maxillectomy: a Case Report: A clinical report. Khon Kaen Dent J [Internet]. 2019 Dec. 28 [cited 2024 Mar. 28];22(2):166-71. Available from: https://he01.tci-thaijo.org/index.php/KDJ/article/view/193470
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Clinical Science
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