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.

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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. KDJ [Internet]. 2019Dec.28 [cited 2021Sep.16];22(2):166-71. Available from: https://he01.tci-thaijo.org/index.php/KDJ/article/view/193470
Section
Clinical Science

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