Researchers develop environment for manufacture of inexpensive 3-D dental models (By Dental Tribune International, August 29, 2018)

Takashi Kamio, Kamichika Hayashi, Takeshi Onda, Takashi Takaki, Takahiko Shibahara, Takashi Yakushiji, Takeo Shibui, Hiroshi Kato


TOKYO, Japan: In oral and maxillofacial surgery and other fields of dentistry, the use of 3-D patient-specific organ models is increasing, and this has raised the cost of obtaining them. To design and produce inexpensive patient-specific dental models, researchers at the Tokyo Dental College recently developed an environment they call the “one-stop 3D printing lab”.


Although it is a low-price desktop 3-D printer, we have created an environment to fabricate the practical 3-D models that seem necessary and sufficient for the daily clinical practice. The ‘one-stop 3D printing lab’ can complete the whole process, from designing to obtaining a model, within one facility,” said lead author Dr Takashi Kamio, assistant professor at the Department of Oral and Maxillofacial Surgery.

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Takashi Kamio, DDS,PhD
Takashi Kamio, DDS,PhD
The Nippon Dental University
Chiyoda-ku, Tokyo | Japan
According to Kamio, the printing laboratory has many advantages for dentist and patients: “The costs for obtaining 3-D models is low, which is why these models can be applied to more cases. It is also easier to fabricate multiple 3-D models (for example according to the surgical technique). Presenting such a 3-D model to patients contributes to deepening their understanding of the process. Furthermore, it is very useful for the operator to visualise the teeth and the jawbone, and actually touch them.”Takashi Kamio, DDS,PhD


Dental Tribune
3D Printing Industry

Utilizing a low-cost desktop 3D printer to develop a "one-stop 3D printing lab" for oral and maxillofacial surgery and dentistry fields.

3D Print Med 2018 Dec 13;4(1). Epub 2018 Aug 13.

4Department of Endodontics, Tokyo Dental College, 1-2-2 Masago, Mihama-ku, Chiba 261-8502 Japan.

Background: In the oral and maxillofacial surgery and dentistry fields, the use of three-dimensional (3D) patient-specific organ models is increasing, which has increased the cost of obtaining them. We developed an environment in our facility in which we can design, fabricate, and use 3D models called the "One-stop 3D printing lab". The lab made it possible to quickly and inexpensively produce the 3D models that are indispensable for oral and maxillofacial surgery. We report our 3D model fabrication environment after determining the dimensional accuracy of the models with different laminating pitches (; layer thickness) after fabricating over 300 3D models. Considerations were made for further reducing modeling cost and model print time. MDCT imaging was performed using a dry human mandible, and 3D CAD data were generated from the DICOM image data. 3D models were fabricated with a fused deposition modeling (FDM) 3D printer MF-2000 (MUTOH) with a laminating pitch of 0.2 mm, 0.3 mm, 0.4 mm, or 0.5 mm. Each 3D model was then subjected to reverse scanning to evaluate the modeling conditions and deformation during modeling. For the 3D image processing system, Volume Extractor 3.0 (i-Plants Systems) and POLYGONALmeister V2 (UEL) were used. For the comparative evaluation of CAD data, spGauge 2014.1 (Armonicos) was used.

Results: As the laminating pitch increased, the weight of the 3D model, model print time, and material cost decreased, and no significant reduction in geometric accuracy was observed.

Conclusions: The amount of modeling material used and preparation cost were reduced by increasing the laminating pitch. The "One-stop 3D printing lab" made it possible to produce 3D models daily. The use of 3D models in the oral and maxillofacial surgery and dentistry fields will likely increase, and we expect that low-cost FDM 3D printers that can produce low-cost 3D models will play a significant role.

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