Fabrication of palatal lift prosthesis using thermoplastic resin for a patient with velopharyngeal insufficiency

Hyun Jung Jung; Jee Hwan Kim; Sang-Hwy Lee; Young-Bum Park

doi:10.4047/jkap.2016.54.3.286

Journal List > J Korean Acad Prosthodont > v.54(3) > 1034885

Go to TopGo to Top Go to BottomGo to Bottom

TOOLS

Jung, Kim, Lee, and Park: Fabrication of palatal lift prosthesis using thermoplastic resin for a patient with velopharyngeal insufficiency

CASE REPORT

J Korean Acad Prosthodont 2016;54(3):286-290.

Published online: 18 December 2016

DOI: https://doi.org/10.4047/jkap.2016.54.3.286

Fabrication of palatal lift prosthesis using thermoplastic resin for a patient with velopharyngeal insufficiency

Hyun Jung Jung, Jee Hwan Kim, Sang-Hwy Lee, Young-Bum Park^∗

Department of Prosthodontics, School of Dentistry, Yonsei University, Seoul, Republic of Korea

∗Corresponding Author: Young Bum Park Department of Prosthodontics, School of Dentistry, Yonsei University, 50-1 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea +82 (0)2 1599 1004: e-mail, DRYBPARK@yuhs.ac

Received 23 November 201510 May 2016 Accepted 22 June 2016

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Recently, flexible removable prosthesis with thermoplastic resin clasp has increasingly become popular. In comparison with conventionally used acrylic resin, thermoplastic resin has lower flexural strength and elastic modulus. Thus, flexible removable prosthesis has low risk of fracture, so denture base can be made thin and light, increasing patient comfort. Also, it can passively sit at tooth undercut during rest, so abutment teeth need minimum or no preparation. In this case report, a 44 year old female patient with mild velopharyngeal insufficiency was treated with a palatal lift prosthesis made of polyester thermoplastic resin. Since the patient had no missing tooth and desired conservative treatment, the flexible removable prosthesis provided relatively satisfactory results. (J Korean Acad Prosthodont 2016;54:286-90)

Keywords: Thermoplastic resin, Velopharyngeal insufficiency, Palatal lift prosthesis

REFERENCES

1.Johns DF., Rohrich RJ., Awada M. Velopharyngeal incompetence: a guide for clinical evaluation. Plast Reconstr Surg. 2003. 112:1890–7.

2.Goudy S., Ingraham C., Canady J. Noncleft velopharyngeal insufficiency: Etiology and need for surgical treatment. Int J Otolaryngol. 2012. 1–3.

3.Schneider E., Shprintzen RJ. A survey of speech pathologists: current trends in the diagnosis and management of velopharyngeal insufficiency. Cleft Palate J. 1980. 17:249–53.

4.Mazaheri M., Mazaheri EH. Prosthodontic aspects of palatal elevation and palatopharyngeal stimulation. J Prosthet Dent. 1976. 35:319–26.

5.La Velle WE., Hardy JC. Palatal lift prostheses for treatment of palatopharyngeal incompetence. J Prosthet Dent. 1979. 42:308–15.

6.Kipfmueller LJ., Lang BB. Treating velopharyngeal inadequacies with a palatal lift prosthesis. J Prosthet Dent. 1972. 27:63–72.

Fig. 1.

Intraoral photos. (A) Maxillary dentition, (B) Mandibular dentition.

Fig. 2.

Intraoral photo during "A" phonation. Star sign shows lower elevation of left soft palate.

Fig. 3.

Mounted casts at CO with a final prosthesis. (A) Front view, (B) Lateral view.

Fig. 4.

Flasking & packing process. (A) Putty investment, (B) Thermoplastic pellets, (C) Special flask for injection molding technique, (D, E) Pellets in a cartridge plasticized in an electric furnace, (F) Cartridge placed on the inlet of the flask and compressed, (G) Cooling, (H) Deflasking.

Fig. 5.

Palatal lift prosthesis after polishing.

Fig. 6.

Delivery.

Fig. 7.

Prosthesis after relining with Coe-comfort.

TOOLS

Similar articles