J Dent Rehabil Appl Sci.  2017 Sep;33(3):207-215. 10.14368/jdras.2017.33.3.207.

Complete denture treatment using lingualized occlusion scheme at the edentulous patient with severely absorbed flat residual ridges: a case report

Affiliations
  • 1Department of Prosthodontics, School of Dentistry, Dankook University, Cheonan, Republic of Korea. jseok@hanmail.net

Abstract

Many factors should be considered for successful denture treatment at edentulous patients: support, retention, stability, occlusion, esthetics, etc. The patient who has severely absorbed residual ridges, however, treatments are challenging to satisfy those factors. The dentures that use anatomic artificial teeth show good mastication efficiency and esthetics but, can easily lose stability at absorbed ridges. On the contrary, the dentures that use non-anatomic artificial teeth perform better stability but, lower masticatory efficiency and esthetics at absorbed ridges. The lingualized occlusion, using both anatomic and non-anatomic teeth, introduced for compromise those of the pros and cons. At lingualized occlusion, buccal cusps of the teeth do not contact on centric relation. Therefore, direction of the occlusal force towards lingually, then stability of dentures increases. This case report shows the results of the treatment flat residual ridges using complete dentures with ligualized occlusion to increase dentures stability and satisfactory of the patient.

Keyword

edentulism; complete denture; artificial tooth; lingualized occlusion

MeSH Terms

Bite Force
Centric Relation
Denture, Complete*
Dentures
Esthetics
Humans
Mastication
Tooth
Tooth, Artificial

Figure

  • Fig. 1 (A) Upper, (B) right lateral, (C) frontal, (D) left lateral and (E) lower views of intraoral photos at the initial examination. Severely absorbed ridges observed.

  • Fig. 2 Individual trays of (A) upper and (B) lower jaws for selective pressure impression technique.

  • Fig. 3 Impressions of (A) upper and (B) lower jaws that taken by individual trays and addition silicone impression materials.

  • Fig. 4 (A) Frontal and (B) lateral views of occlusal plane setting.

  • Fig. 5 (A) Right buccal, (B) left buccal, (C) left lingual and (D) right lingual views of wax dentures.

  • Fig. 6 Occlusal contact point of (A) centric relation, (B) left lateral excursion and (C) right lateral excursion.

  • Fig. 7 Occlusion registration with alu-wax for clinical remounting.

  • Fig. 8 Confirmation of the lingualized occlusion at intraoral denture delivery phase. The photos of (A) right, (B) left non-working side and (C) right, (D) left working side showed upper palatal cusps evenly contacted to lower molars.

  • Fig. 9 Lateral and frontal view of extraoral photos of the patient before and after treatment. (B) Lateral and (D) frontal facial profiles were improved esthetically than (A) lateral and (C) frontal facial profiles with old dentures.

  • Fig. 10 (A) Upper, (B) right lateral, (C) frontal, (D) left lateral, (E) lower views of the intraoral photos after treatment at centric relation state.


Reference

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