J Dent Rehabil Appl Sci.  2024 May;40(2):91-99. 10.14368/jdras.2024.40.2.91.

Complete denture fabrication of a skeletal class III edentulous patient considering anterior neutral zone: a case report

• Kim SH
• Kim HJ
• Park SW
• Lim HP
• Park C
• Jang Wh

• KMID: 2562753
• DOI: http://doi.org/10.14368/jdras.2024.40.2.91

Abstract

In the case of skeletal class III edentulous patients, the stability of dentures can be achieved by using a crossbite by considering the residual ridge relationship when fabricating complete dentures. Forming the anterior teeth in a normal occlusal relationship in a skeletal class III ridge relationship may reduce the stability of the denture by increasing the anterior cantilever. However, when patients use complete dentures, not only functional aspects but also aesthetic aspects are important. The aesthetics of complete dentures depends on how the anterior artificial teeth are arranged, and cases of complete denture fabrication using normal occlusion or edge-to-edge bite in edentulous patients with skeletal class III ridge relationships have been reported. In this case, complete dentures were fabricated for an edentulous patient with a skeletal class III edentulous patients by forming anterior edgeto-edge bite considering neutral zone in maxillary anterior teeth, and good aesthetic and functional results were obtained.

Keyword

complete denture; skeletal class III; neutral zone; edge-to-edge bite

Figure

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  Fig. 1 Initial extraoral photographs. (A) Frontal view without old denture, (B) Lateral view without old denture, (C) Frontal view with old denture, (D) Lateral view without old denture.

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  Fig. 2 Old denture photographs. (A) Right view, (B) Frontal view, (C) Left view.

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  Fig. 3 Initial intraoral photographs. (A) Maxillary occlusal view, (B) Frontal view, (C) Mandibular occlusal view, (D) Initial panoramic radiography.

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  Fig. 4 Skeletal class III relationship with mandibular prognathism was observed. (A) Lateral cephalometric radiograph, (B) Mounted diagnostic cast.

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  Fig. 5 Temporary denture delivery. (A) Right view, (B) Frontal view, (C) Left view, (D) Overbite.

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  Fig. 6 Final impression of (A) Maxilla, (B) Mandible and definitive casts of (C) Maxilla, (D) Mandible.

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  Fig. 7 (A) Modifying occlusal rim for space gaining for neutral zone impression material. Neutral zone impression with tissue conditioner of maxillary anterior region, (B) Frontal view, (C) Occlusal view, (D) Overjet.

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  Fig. 8 (A) Facebow transfer, (B) Jaw relation record, (C) Mounting of master casts on articulator.

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  Fig. 9 Captured images of (A) Master casts & occlusal rim scanning, Cross sectional view on 1st molar & interalveolar crest line analysis (B) Right, (C) Left.

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  Fig. 10 Wax denture fabrication (A) Frontal view, (B) Overjet, (C) Occlusal rim after neutral zone impression (magnified image of Fig. 8C).

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  Fig. 11 Definitive denture delivery. (A) Right view, (B) Frontal view, (C) Left view.

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  Fig. 12 Captured image of comparison of final & old denture (red line: old denture, yellow line: final denture).

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  Fig. 13 Post insertion extraoral photographs. (A) Frontal view, (B) Lateral view, (C) Lateral view comparison with old denture insertion.

Reference

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