Journal of Technologic Dentistry (대한치과기공학회지)

Korean Academy of Dental Technology (대한치과기공학회)
권호 표지
DOI QR코드

DOI QR Code

Analysis of deformation according to post-curing of complete arch artificial teeth for temporary dentures printed with a DLP printer

DLP 프린터로 출력한 임시의치용 전악 인공치아의 후경화에 따른 변형 분석

  • Received : 2021.05.24
  • Accepted : 2021.06.07
  • Published : 2021.06.30
Download PDF
⟨ Previous Next ⟩

Abstract

Purpose: This study aimed to analyze deformation according to post-curing of complete arch artificial teeth for temporary dentures printed with a digital light processing (DLP) printer. Methods: An edentulous model was prepared and an occlusal rim was produced. The edentulous model and occlusal rim were scanned using a model scanner. A complete denture was designed using a dental computer-aided design, and the denture base and artificial tooth were separated. Ten complete arch artificial teeth were printed using a 3D printer (DLP). Complete arch artificial teeth was classified into the following three groups: a group no post-curing (NC), a group with 10 minutes post-curing (10M), and a group with 20 minutes post-curing (20M). Specimens were scanned using a model scanner. The scanned data were overlapped with the reference data. Statistical analysis was performed using one-way ANOVA analysis of variance, Kruskal-Wallis test, and Mann-Whitney U test (α=0.05). Results: Regarding the overall deviation of complete arch artificial teeth, the NC group showed the lowest mean deviation of 111.13 ㎛ and the 20M group showed the highest mean deviation of 131.03 ㎛. There were statistically significant differences among the three groups (p<0.05). Conclusion: The complete arch artificial tooth showed deformation due to post-curing. In addition, the largest shrinkage deformation was observed at 10 minutes of post-curing, whereas the least deformation was observed at 20 minutes.

Keywords

Acknowledgement

This paper was supported by Wonkwang Health Science University in 2021 (No. 2021017).

References

  1. Kim WS, Kim KB. Evaluation of validity of edentulous digital model for complete denture fabrication. J Dent Hyg Sci. 2015;15:393-398. https://doi.org/10.17135/jdhs.2015.15.4.393
  2. Kim DY, Park JY, Bae SY, Kang HW, Kim JH, Kim WC. Evaluation of fitness according to application of glass fiber reinforcement for lower jaw complete denture. J Technol Dent. 2018;40:201-207.
  3. Chae SY, Vang MS. Dimensional stability and surface morphology of various denture resins. J Korean Acad Prosthodont. 1992;30:401-410.
  4. Anadioti E, Musharbash L, Blatz MB, Papavasiliou G, Kamposiora P. 3D printed complete removable dental prostheses: a narrative review. BMC Oral Health. 2020;20:343. https://doi.org/10.1186/s12903-020-01328-8
  5. Jung Y, Lee J, Hong SJ, Noh K, Kim HS, Pae A. Fabrication of complete dentures by conventional method and CAD/CAM milling: a case report. J Korean Acad Prosthodont. 2019;57:296-303. https://doi.org/10.4047/jkap.2019.57.3.296
  6. Kim DY, Kim JH, Kim HY, Kim WC. Comparison and evaluation of marginal and internal gaps in cobalt-chromium alloy copings fabricated using subtractive and additive manufacturing. J Prosthodont Res. 2018;62:56-64. https://doi.org/10.1016/j.jpor.2017.05.008
  7. Kim DY, Kim JH. Comparison of shrinkage according to thickness of photopolymerization resin for 3D printing. J Tech Dent. 2021;43:1-5. https://doi.org/10.14347/jtd.2021.43.1.1
  8. Lee BI, You SG, You SM, Kim JH. Comparison of three-dimensional adaptation as per the rinsing time of temporary crown manufactured using a digital light processing printer. J Tech Dent. 2020;42:334-340. https://doi.org/10.14347/jtd.2020.42.4.334
  9. Kim DY. Difference between shrinkage rate of irradiation amount of 3D printing UV curable resin and shrinkage rate according to a constant temperature water bath. J Korean Acad Dent Technol. 2020;42:113-120. https://doi.org/10.14347/KADT.2020.42.2.113
  10. Kim DY, Lee GY, Kang HW, Yang CS. Comparative analysis of strain according to two wavelengths of light source and constant temperature bath deposition in ultraviolet-curing resin for dental three-dimensional printing. J Tech Dent. 2020;42:208-212. https://doi.org/10.14347/JTD.2020.42.3.208
  11. Unkovskiy A, Schmidt F, Beuer F, Li P, Spintzyk S, Kraemer Fernandez P. Stereolithography vs. direct light processing for rapid manufacturing of complete denture bases: an in vitro accuracy analysis. J Clin Med. 2021;10:1070. https://doi.org/10.3390/jcm10051070
  12. Kim D, Shim JS, Lee D, Shin SH, Nam NE, Park KH, et al. Effects of post-curing time on the mechanical and color properties of three-dimensional printed crown and bridge materials. Polymers (Basel). 2020;12:2762. https://doi.org/10.3390/polym12112762
  13. Kwon Y, Cho UR. Study on the improvement of film shrinkage in UV-curing process. Polymer(Korea). 2011;35:320-324.
  14. Son CE, Choi SS. Analytical techniques for measurement of crosslink densities of rubber vulcanizates. Elastomers Compos. 2019;54:209-219. https://doi.org/10.7473/ec.2019.54.3.209
  15. Park KM. Study on shear bond strength of various composite resins to artificial denture teeth. J Korean Acad Dent Technol. 2014;36:171-177. https://doi.org/10.14347/kadt.2014.36.3.171
  16. Kim DY, Lee GY, Kim JH, Yang CS. Comparative analysis of strain according to the deposition of a constant temperature water bath of a denture-base artificial tooth produced using three-dimensional printing ultraviolet-curing resin. J Tech Dent. 2020;42:202-207. https://doi.org/10.14347/JTD.2020.42.3.202
  17. Shin DH, Park YM, Park SH. Correlation between UV-dose and shrinkage amounts of post-curing process for precise fabrication of dental model using DLP 3D printer. J Korean Soc Manuf Process Eng. 2018;17:47-53.
  18. Lee BI, You SG, You SM, Kim DY, Kim JH. Evaluating the accuracy (trueness and precision) of interim crowns manufactured using digital light processing according to post-curing time: an in vitro study. J Adv Prosthodont. 2021;13:89-99. https://doi.org/10.4047/jap.2021.13.2.89
  19. Kim BS, Kim WS, Kim SM, Kim JJ, Kim JH, Park NK, et al. Complete denture technologys. Seoul: Komoonsa, 2019.
  20. Lemos CAA, Verri FR, Gomes JML, Santiago Junior JF, Moraes SLD, Pellizzer EP. Bilateral balanced occlusion compared to other occlusal schemes in complete dentures: a systematic review. J Oral Rehabil. 2018;45:344-354. https://doi.org/10.1111/joor.12607
  21. International Organization for Standardization (ISO). ISO 12836:2015 Dentistry - digitizing devices for CAD/CAM systems for indirect dental restorations - test methods for assessing accuracy. 2nd ed. Geneva: ISO, 2015.
  22. International Organization for Standardization (ISO). ISO 5725-1:1994 - accuracy (trueness and precision) of measurement methods and results - part 1: general principles and definitions. Geneva: ISO, 1994.