Design and fabrication of complete dentures using CAD/CAM technology

Weili Han, Yanfeng Li, Yue Zhang, Yuan Lv, Ying Zhang, Ping Hu, Huanyue Liu, Zheng Ma, Yi Shen, Weili Han, Yanfeng Li, Yue Zhang, Yuan Lv, Ying Zhang, Ping Hu, Huanyue Liu, Zheng Ma, Yi Shen

Abstract

The aim of the study was to test the feasibility of using commercially available computer-aided design and computer-aided manufacturing (CAD/CAM) technology including 3Shape Dental System 2013 trial version, WIELAND V2.0.049 and WIELAND ZENOTEC T1 milling machine to design and fabricate complete dentures.The modeling process of full denture available in the trial version of 3Shape Dental System 2013 was used to design virtual complete dentures on the basis of 3-dimensional (3D) digital edentulous models generated from the physical models. The virtual complete dentures designed were exported to CAM software of WIELAND V2.0.049. A WIELAND ZENOTEC T1 milling machine controlled by the CAM software was used to fabricate physical dentitions and baseplates by milling acrylic resin composite plates. The physical dentitions were bonded to the corresponding baseplates to form the maxillary and mandibular complete dentures.Virtual complete dentures were successfully designed using the software through several steps including generation of 3D digital edentulous models, model analysis, arrangement of artificial teeth, trimming relief area, and occlusal adjustment. Physical dentitions and baseplates were successfully fabricated according to the designed virtual complete dentures using milling machine controlled by a CAM software. Bonding physical dentitions to the corresponding baseplates generated the final physical complete dentures.Our study demonstrated that complete dentures could be successfully designed and fabricated by using CAD/CAM.

Conflict of interest statement

All the authors declare that there is no conflict of interest.

Figures

Figure 1
Figure 1
The flowchart for designing and fabricating complete dentures via CAD/CAM technology. CAD = computer-aided design, CAM = computer-aided manufacturing.
Figure 2
Figure 2
The process to generate 3D digital edentulous models for CAD, including separated 3D digital models of maxillary master cast (#1), mandibular master cast (#2), and maxillary occlusal rim with maxillary baseplate and mandibular occlusal rim with mandibular baseplate (#3). 3D = three-dimensional, CAD = computer-aided manufacturing.
Figure 3
Figure 3
Different views of virtual complete dentures on the master cast: front view (A), view from the left (B), view from the right (C), and view from the occlusal plane (D) of virtual maxillary complete denture; front view (E), view from the left (F), view from the right (G), and view from the occlusal plane (H) of virtual mandibular complete denture; front view (I), view from the left (J), view from the right (K), and rear view (L) of complete dentures on master cast.
Figure 4
Figure 4
The detection of interfering points for virtual complete dentures and subsequent removal of interfering points: A, detected interfering points in virtual maxillary denture; B, the enlarged image of the red cycle in A; C, interference points removed from virtual maxillary denture; D, detected interfering points in virtual mandibular denture; E, the enlarged image of the red cycle in D; F, interference points removed from virtual mandibular denture.
Figure 5
Figure 5
Fabrication of baseplates and dentitions using CAD technology, the virtual maxillary baseplate (A); the virtual maxillary baseplate (B); the virtual upper and lower dentitions (C); the milling of acrylic composite plate for upper and lower dentitions (D). CAD = computer-aided manufacturing.
Figure 6
Figure 6
Fabricated maxillary baseplate: the front view (A), view from the right (B), view from the left (C), and rear view (D); maxillary dentition: the front view (E), view from the right (F), view from the left (G), and rear view (H); maxillary complete dentures: the front view (I), view from the right (J), view from the left (K), and rear view (L).
Figure 7
Figure 7
Fabricated mandibular baseplate: the front view (A), view from the right (B), view from the left (C), and rear view (D); mandibular dentition: the front view (E), view from the right (F), view from the left (G), and rear view (H); and mandibular complete dentures: the front view (I), view from the right (J), view from the left (K), and rear view (L).

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Source: PubMed

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