J Korean Acad Prosthodont.  2020 Jan;58(1):67-76. 10.4047/jkap.2020.58.1.67.

Full mouth rehabilitation of a severely worn dentition using intraoral scanner and the CAD/CAM double scanning technique

• Yoon SN
• Han JS
• Yeo IS
• Yoon HI

• KMID: 2469923
• DOI: http://doi.org/10.4047/jkap.2020.58.1.67

Abstract

With the evolution of the computer-aided design/computer-aided manufacturing (CAD/CAM) technology, the intraoral scanners are playing an increasingly important role, as they are the first step towards a completely digital workflow. The CAD/CAM double scanning technique has been used to transfer the information from provisional restorations to definitive restorations. In this case, a 67-year-old male with esthetically compromised anterior teeth, generalized severe attrition of teeth, and reduced vertical dimension was treated with full mouth rehabilitation including a re-establishment of the lost vertical dimension of occlusion assisted by the crown lengthening procedure. The provisional restorations were fabricated using an intraoral scanner and the CAD/CAM double scanning technique. After the period of adaption, the definitive monolithic zirconia restorations were delivered. The CAD/CAM double scanning technique successfully transferred the occlusal and morphological characteristics, obtained from the provisional restorations, to the definitive restorations.

Keyword

Computer-aided design/computer-aided manufacturing (CAD/CAM); Double scanning technique; Intraoral scanner; Tooth wear; Vertical dimension of occlusion; Zirconium oxide

MeSH Terms

Aged
Crown Lengthening
Dentition*
Humans
Male
Mouth Rehabilitation*
Mouth*
Tooth
Tooth Wear
Vertical Dimension

Figure

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  Fig. 1 Intraoral photograph before treatment. (A) Maxillary occlusal, (B) Right, (C) Frontal, (D) Left, (E) Mandibular occlusal views.

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  Fig. 2 Initial radiographs of the patient. (A) Panoramic radiograph, (B) Transcranial projection of both TMJ.

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  Fig. 3 Occlusal splint with re-establishment of the vertical dimension.

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  Fig. 4 Diagnostic wax-up models. (A) Maxillary occlusal, (B) Right, (C) Frontal, (D) Left, (E) Mandibular occlusal views.

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  Fig. 5 Intraoral scanbody. (A) Maxillary, (B) Mandibular.

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  Fig. 6 Intraoral scan. (A) Maxillary, (B) Mandibular.

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  Fig. 7 CAD design. (A) Maxillary, (B) Mandibular.

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  Fig. 8 Two-thirds of the arch with the prepared teeth and titanium abutments were scanned. (A) Right, (B) Left.

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  Fig. 9 Two-thirds of the arch with the provisional restorations were scanned. (A) Right, (B) Left.

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  Fig. 10 Superimposition of the prepared teeth, titanium abutments, and provisional restorations. (A) Right, (B) Left.

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  Fig. 11 Second provisional restorations. (A) Maxillary occlusal, (B) Right, (C) Frontal, (D) Left, (E) Mandibular occlusal views.

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  Fig. 12 Final impression of the anterior teeth abutments. (A) Maxillary, (B) Mandibular.

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  Fig. 13 Superimposition of second provisional restorations and the working casts (anterior teeth).

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  Fig. 14 Definitive restorations of the anterior teeth. (A) Right, (B) Frontal, (C) Left.

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  Fig. 15 Final impression of the posterior teeth abutments. (A) Maxillary, (B) Mandibular.

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  Fig. 16 Superimposition of second provisional restorations and the working casts (posterior teeth).

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  Fig. 17 Definitive restorations. (A) Maxillary occlusal, (B) Right, (C) Frontal, (D) Left, (E) Mandibular occlusal views

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  Fig. 18 Panoramic radiograph after treatment.

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