J Dent Rehabil Appl Sci.  2024 Aug;40(3):169-178. 10.14368/jdras.2024.40.3.169.

Single-unit fixed restoration using the automated crown shaping artificial intelligence program

• Park EB
• Cho YE

• KMID: 2562761
• DOI: http://doi.org/10.14368/jdras.2024.40.3.169

Abstract

Recently, several attempts have been made to integrate AI into the field of dentistry. To overcome the limitations of traditional fixed prosthetic fabrication methods such as CAD-CAM (computer-aided design-computer-aided manufacturing), AI programs are being developed for automated crown fabrication, and various studies are underway to applicate in clinical situation. In these case studies, single-unit fixed prostheses were fabricated using an AI program (Dentbird Crown, Imagoworks Inc, Seoul, Korea) in both the anterior and posterior regions and the fabrication time and accuracy were compared with previously used CAD-CAM method. The first case is a 44-year-old woman who presented for re-fabrication of a zirconia prosthesis due to a prosthesis fracture on the lingual side of the upper right lateral incisor. The second case is a 53-year-old male patient who presented for a crown restoration on an upper left first molar following root canal treatment, where he received a final zirconia restoration. In both cases, the first prosthesis was designed manually using a CAD program, the second prosthesis was designed using AI alone, and the third prosthesis was designed using AI and then modified by CAD program, and the three designs were superimposed to compare suitability. When evaluated after temporary placement, the final prosthesis demonstrates adequate stability, retention and support, resulting in functional and esthetic satisfaction.

Keyword

artificial intelligence; CAD-CAM; zirconia

Figure

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  Fig. 1 Intraoral photograph before treatment. Fracture of prosthesis on the lingual side of the maxillary anterior teeth and rotation of the mandibular central incisors are observed. (A) Upper view, (B) Frontal view, (C) Right view.

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  Fig. 2 Initial panoramic radiographic image. No specific abnormalities are observed in #12 on the panoramic radiograph.

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  Fig. 3 Comparative analysis of CAD design, AI design and AI design with CAD design modification. The yellow is the AI design, the blue is CAD design, and the white is the AI design modified through CAD. (A) Overlapping, (B) Internal fit, (C) Margin.

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  Fig. 4 Designed occlusal contacts and actual occlusal contacts found in the mouth. (A) CAD design, (B) AI design, (C) AI design with CAD design modification.

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  Fig. 5 Designed morphology. (A) CAD design, (B) AI design, (C) AI design with CAD design modification.

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  Fig. 6 Provisional cementation of final prosthesis. (A) CAD design, (B) AI design, (C) AI design with CAD design modification.

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  Fig. 7 Final cementation of CAD design. A prosthesis designed with the CAD system according to the patient’s requirements was finally cemented and showed a satisfactory esthetic result. (A) Upper view, (B) Frontal view, (C) Right view.

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  Fig. 8 Intraoral photograph before treatment. The upper left first molar has completed root canal treatment. (A) Upper view, (B) Frontal view, (C) Left view.

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  Fig. 9 Initial panoramic radiographic image. No specific abnormalities are observed in #26 on the panoramic radiograph.

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  Fig. 10 Comparative analysis of CAD design, AI design and AI design with CAD design modification. The yellow is the AI design, the blue is the CAD design, and the white is the AI design modified through CAD. (A) Overlapping, (B) Internal fit, (C) Margin.

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  Fig. 11 Occlusion and morphology designed and found in the mouth. (A) CAD design, (B) AI design, (C) AI design with CAD design modification.

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  Fig. 12 Provisional cementation of final prosthesis. (A) CAD design, (B) AI design, (C) AI design with CAD design modification.

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  Fig. 13 Final cementation of CAD design. In the posterior region, the results of the AI design and the CAD design were visually indistinguishable and unlike those in the anterior region. (A) Upper view, (B) Frontal view, (C) Left view.

Reference

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