Journal of Yeungnam Medical Science

Yeungnam University College of Medicine, Yeungnam University Institute Medical Science (영남대 의대 학술지 편집위원회)
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Three-dimensional printing of temporary crowns with polylactic acid polymer using the fused deposition modeling technique: a case series

  • Eun-Kyong Kim (Department of Dental Hygiene, College of Science and Technology, Kyungpook National University) ;
  • Eun Young Park (Department of Dentistry, Yeungnam University College of Medicine) ;
  • Sohee Kang (Department of Dentistry, Yeungnam University College of Medicine)
  • Received : 2022.09.02
  • Accepted : 2022.09.22
  • Published : 2023.07.31
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Abstract

With recent developments in digital dentistry, research on techniques and materials for three-dimensional (3D) printing is actively underway. We report the clinical applications and outcomes of 3D printing of temporary crowns fabricated with polylactic acid (PLA) using a fused deposition modeling (FDM) printer. Five participants were recruited from among patients scheduled to be treated with a single full-coverage crown at a dental clinic in a university medical center from June to August 2022. We used 3D-printed crowns fabricated with PLA using an FDM printer as temporary crowns and were assessed for discomfort, fracture, and dislodging. The 3D-printed temporary crowns were maintained without fracture, dislodging, or discomfort until the permanent prosthesis was ready. The average time required for printing the temporary crowns was approximately 7 minutes. The 3D printing of temporary crowns with PLA using an FDM printer is a convenient process for dentists. However, these crowns have some limitations, such as rough surface texture and translucency; therefore, the 3D printing process should be improved to produce better prostheses.

Keywords

Acknowledgement

This study was supported by the National IT Industry Promotion Agency (A1602-22-1003).

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