J Korean Acad Prosthodont.  2018 Jul;56(3):250-257. 10.4047/jkap.2018.56.3.250.

A case of removable dentures using digital method

• Lee JS
• Ahn SJ
• Leesungbok R
• Lee SW

• KMID: 2416818
• DOI: http://doi.org/10.4047/jkap.2018.56.3.250

Abstract

Generally dentures are manufactured by conventional method, however the frequency of fabricating denture using digital method is increasing due to the recent development of digital technology in dentistry. The digital method of manufacturing denture is classified into two systems; 3D scan of the impression to arrange the artificial teeth on the CAD (Computer-aided design) and 3D printing to produce the resin-based complete denture, or 3D scan of the model to design of the framework using CAD, resin pattern formation by 3D printing and casting of metal framework of complete denture or removable partial denture. In this case report, electronic surveying and design the metal framework of the dentures were performed using CAD program, and plastic resin patterns fabricated by 3D printing were casted for upper full denture and lower removable partial denture. During follow-up periods, dentures using digital method have provided satisfactory results esthetically and functionally.

Keyword

Computer-aided design; Electronic surveying; 3D printing

MeSH Terms

Computer-Aided Design
Dentistry
Denture, Complete
Denture, Partial, Removable
Dentures*
Follow-Up Studies
Methods*
Plastics
Printing, Three-Dimensional
Tooth, Artificial
Plastics

Figure

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  Fig. 1 Initial intraoral view. (A) Occlusal view of maxilla, (B) Lateral view (right side), (C) Frontal view, (D) Lateral view (left side), (E) Occlusal view of mandible.

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  Fig. 2 Radiograph at the patient's first visit. (A) Panoramic view, (B) Temporomandibular joint (TMJ) series.

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  Fig. 3 Electronic surveying on diagnostic model of mandible shows degree of undercut by different color. (A) Occlusal view, (B) Lateral view (right side), (C) Lateral view (left side).

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  Fig. 4 Metal framework of maxillary complete denture designed by CAD, and resin pattern was fabricated by 3D printer. (A) Master model of maxilla, (B) Block out of 3D scan model, (C) Mesh coverage setting, (D) Design of metal framework, (E), (F) Resin pattern fabricated by 3D printer, (G) Resin pattern for casting, (H) Wax-rim with metal framework.

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  Fig. 5 Jaw relation record using Gothic arch tracer. (A) Wax-rim with Gothic arch tracing, (B) Bite registration.

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  Fig. 6 Electronic surveying on mandibular surveyed crowns shows ideal undercut degrees of retentive arms. (A) Occlusal view, (B) Lateral view (right side), (C) Lateral view (left side).

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  Fig. 7 Metal framework of mandibular removable partial denture designed by CAD, and resin pattern was fabricated by 3D printing. (A) Master model of mandible, (B) 3D scan of model, block out, (C) Design of major connector, (D) Design of finishing line and sprue, (E) Resin pattern fabricated by 3D printer, (F) Resin pattern for casting, (G), (H) Metal framework, (I) Wax-rim with metal framework.

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  Fig. 8 Intraoral view of definitive prosthese. (A) Occlusal view of maxilla, (B) Lateral view (right side), (C) Frontal view, (D) Lateral view (left side), (E) Occlusal view of mandible.

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  Fig. 9 Radiograph of patient after delivery of final dentures. (A) Panoramic view, (B) Temporomandibular joint (TMJ) series.

Reference

1. Maeda Y, Minoura M, Tsutsumi S, Okada M, Nokubi T. A CAD/CAM system for removable denture. Part I: Fabrication of complete dentures. Int J Prosthodont. 1994; 7:17–21.

2. Goodacre CJ, Garbacea A, Naylor WP, Daher T, Marchack CB, Lowry J. CAD/CAM fabricated complete dentures: concepts and clinical methods of obtaining required morphological data. J Prosthet Dent. 2012; 107:34–46.

3. Abduo J, Lyons K, Bennamoun M. Trends in computer-aided manufacturing in prosthodontics: a review of the available streams. Int J Dent. 2014; 2014:783948.

4. Stansbury JW, Idacavage MJ. 3D printing with polymers: Challenges among expanding options and opportunities. Dent Mater. 2016; 32:54–64.

5. Eggbeer D, Bibb R, Williams R. The computer-aided design and rapid prototyping fabrication of removable partial denture frameworks. Proc Inst Mech Eng H. 2005; 219:195–202.

6. Wu J, Wang X, Zhao X, Zhang C, Gao B. A study on the fabrication method of removable partial denture framework by computer aided design and rapid prototyping. Rapid Prototyp J. 2012; 18:318–323.

7. Lo Russo L, Salamini A. Removable complete digital dentures: A workflow that integrates open technologies. J Prosthet Dent. 2018; 119:727–732.

8. Miyazaki T, Hotta Y, Kunii J, Kuriyama S, Tamaki Y. A review of dental CAD/CAM: current status and future perspectives from 20 years of experience. Dent Mater J. 2009; 28:44–56.

9. Kattadiyil MT, Mursic Z, AlRumaih H, Goodacre CJ. Intraoral scanning of hard and soft tissues for partial removable dental prosthesis fabrication. J Prosthet Dent. 2014; 112:444–448.

10. Hong YS, Park EJ, Kim SK, Koak JY, Heo SJ, Park JM. Surveyed restoration and RPD framework design utilizing electronic surveying. J Korean Acad Prosthodont. 2011; 49:354–361.

11. Park SA, Koak JY, Heo SJ, Kim SK, Park JM. RPD framework fabrication using computer-aided design (CAD) and rapid prototyping. J Korean Acad Prosthodont. 2017; 55:94–99.

12. Kanazawa M, Iwaki M, Minakuchi S, Nomura N. Fabrication of titanium alloy frameworks for complete dentures by selective laser melting. J Prosthet Dent. 2014; 112:1441–1447.