J Korean Acad Prosthodont.  2016 Oct;54(4):445-450. 10.4047/jkap.2016.54.4.445.

Complete denture rehabilitation of fully edentulous patient with severe bone resorption and class II jaw relation using piezography

• Kwon W
• Song YG
• Lee JS

• KMID: 2388225
• DOI: http://doi.org/10.4047/jkap.2016.54.4.445

Abstract

Piezography, prosthetic space recorded by pronunciation, can be used as a reference for arrangement of artificial teeth and polishing surface of a denture. In this case, a 67 year old female patient was presented for new dentures. Old dentures had class II relationship and poor retention. For fabrication of stable dentures, using piezography and lingualized occlusion was planned. After taking impressions with conventional method, conventional denture bases with wax rim were fabricated. Then, additional mandibular denture base was fabricated for piezography. With fast setting silicon impression material, piezography was recorded by using six pronunciations, 'si', 'so', 'me', 'te', 'de', and 'mu'. According to the piezographic space, mandibular artificial teeth were arranged and modified for lingualized occlusion. As a result, the patient was satisfied with new dentures functionally and esthetically.

Keyword

Piezography; Edentulous patient; Complete denture

MeSH Terms

Bone Resorption*
Denture Bases
Denture, Complete*
Dentures
Female
Humans
Jaw*
Methods
Rehabilitation*
Silicon
Tooth, Artificial
Silicon

Figure

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  Fig. 1. Frontal view of fully edentulous mouth of the patient.

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  Fig. 2. Class II jaw relationship of old denture (Lateral view).

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  Fig. 3. Final impressions show the residual ridges and borders of the patient. (A) Final impression of maxilla, (B) Final impression of mandible.

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  Fig. 4. (A) Conventional denture base with wax rim (Mandible), (B) Additional denture base for piezography with shorter border (Mandible).

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  Fig. 5. Piezography taken with heavy body silicone impression material.

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  Fig. 6. Piezography with additional application of light body silicone impression material.

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  Fig. 7. Wax rim made from piezography.

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  Fig. 8. Class II tendency also shown by wax rim made from piezography.

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  Fig. 9. Mandibular teeth arrangement according to piezography.

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  Fig. 10. Final denture after centric occlusion adjustment for lingualized occlusion.

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  Fig. 11. Extraoral photos of the patient before and after treatment. (A) Frontal view, before treatment, (B) Lateral view, before treatment, (C) Frontal view, after placement of prostheses, (D) Lateral view, after placement of prostheses.

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  Fig. 12. Frontal view of intraoral photo after placement of prostheses.

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  Fig. 13. Vowel chart from International phonetic association.6

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