Cargando…

Evaluation of Dimensional Changes According to Aging Period and Postcuring Time of 3D-Printed Denture Base Prostheses: An In Vitro Study

During the three-dimensional (3D) printing process of a dental prosthesis, using photopolymer resin, partially polymerized resin is further cured through the postcuring process that proceeds after the printing, which improves the stability of the printed product. The mechanical properties of the end...

Descripción completa

Detalles Bibliográficos
Autores principales: Shin, Seung-Ho, Doh, Re-Mee, Lim, Jung-Hwa, Kwon, Jae-Sung, Shim, June-Sung, Kim, Jong-Eun
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8539717/
https://www.ncbi.nlm.nih.gov/pubmed/34683773
http://dx.doi.org/10.3390/ma14206185
_version_ 1784588814848622592
author Shin, Seung-Ho
Doh, Re-Mee
Lim, Jung-Hwa
Kwon, Jae-Sung
Shim, June-Sung
Kim, Jong-Eun
author_facet Shin, Seung-Ho
Doh, Re-Mee
Lim, Jung-Hwa
Kwon, Jae-Sung
Shim, June-Sung
Kim, Jong-Eun
author_sort Shin, Seung-Ho
collection PubMed
description During the three-dimensional (3D) printing process of a dental prosthesis, using photopolymer resin, partially polymerized resin is further cured through the postcuring process that proceeds after the printing, which improves the stability of the printed product. The mechanical properties of the end product are known to be poor if the postcuring time is insufficient. Therefore, this study evaluated the effect of the postcuring time of the 3D-printed denture base on its dimensional stability, according to the aging period. The 3D prints were processed after designing maxillary and mandibular denture bases, and after the following postcuring times were applied: no postcuring, and 5, 15, 30, and 60 min. The dimensional stability change of the denture base was evaluated and analyzed for 28 days after the postcuring process. The trueness analysis indicated that the mandibular denture base had lower output accuracy than the maxillary denture base, and the dimensional stability change increased as postcuring progressed. In the no postcuring group for the mandible, the error value was 201.1 ± 5.5 µm (mean ± standard deviation) after 28 days, whereas it was 125.7 ± 13.0 µm in the 60 min postcuring group. For both the maxilla and the mandible, shorter postcuring times induced larger dimensional stability changes during the aging process. These findings indicate that in order to manufacture a denture base with dimensional stability, a sufficient postcuring process is required during the processing stage.
format Online
Article
Text
id pubmed-8539717
institution National Center for Biotechnology Information
language English
publishDate 2021
publisher MDPI
record_format MEDLINE/PubMed
spelling pubmed-85397172021-10-24 Evaluation of Dimensional Changes According to Aging Period and Postcuring Time of 3D-Printed Denture Base Prostheses: An In Vitro Study Shin, Seung-Ho Doh, Re-Mee Lim, Jung-Hwa Kwon, Jae-Sung Shim, June-Sung Kim, Jong-Eun Materials (Basel) Article During the three-dimensional (3D) printing process of a dental prosthesis, using photopolymer resin, partially polymerized resin is further cured through the postcuring process that proceeds after the printing, which improves the stability of the printed product. The mechanical properties of the end product are known to be poor if the postcuring time is insufficient. Therefore, this study evaluated the effect of the postcuring time of the 3D-printed denture base on its dimensional stability, according to the aging period. The 3D prints were processed after designing maxillary and mandibular denture bases, and after the following postcuring times were applied: no postcuring, and 5, 15, 30, and 60 min. The dimensional stability change of the denture base was evaluated and analyzed for 28 days after the postcuring process. The trueness analysis indicated that the mandibular denture base had lower output accuracy than the maxillary denture base, and the dimensional stability change increased as postcuring progressed. In the no postcuring group for the mandible, the error value was 201.1 ± 5.5 µm (mean ± standard deviation) after 28 days, whereas it was 125.7 ± 13.0 µm in the 60 min postcuring group. For both the maxilla and the mandible, shorter postcuring times induced larger dimensional stability changes during the aging process. These findings indicate that in order to manufacture a denture base with dimensional stability, a sufficient postcuring process is required during the processing stage. MDPI 2021-10-18 /pmc/articles/PMC8539717/ /pubmed/34683773 http://dx.doi.org/10.3390/ma14206185 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Shin, Seung-Ho
Doh, Re-Mee
Lim, Jung-Hwa
Kwon, Jae-Sung
Shim, June-Sung
Kim, Jong-Eun
Evaluation of Dimensional Changes According to Aging Period and Postcuring Time of 3D-Printed Denture Base Prostheses: An In Vitro Study
title Evaluation of Dimensional Changes According to Aging Period and Postcuring Time of 3D-Printed Denture Base Prostheses: An In Vitro Study
title_full Evaluation of Dimensional Changes According to Aging Period and Postcuring Time of 3D-Printed Denture Base Prostheses: An In Vitro Study
title_fullStr Evaluation of Dimensional Changes According to Aging Period and Postcuring Time of 3D-Printed Denture Base Prostheses: An In Vitro Study
title_full_unstemmed Evaluation of Dimensional Changes According to Aging Period and Postcuring Time of 3D-Printed Denture Base Prostheses: An In Vitro Study
title_short Evaluation of Dimensional Changes According to Aging Period and Postcuring Time of 3D-Printed Denture Base Prostheses: An In Vitro Study
title_sort evaluation of dimensional changes according to aging period and postcuring time of 3d-printed denture base prostheses: an in vitro study
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8539717/
https://www.ncbi.nlm.nih.gov/pubmed/34683773
http://dx.doi.org/10.3390/ma14206185
work_keys_str_mv AT shinseungho evaluationofdimensionalchangesaccordingtoagingperiodandpostcuringtimeof3dprinteddenturebaseprosthesesaninvitrostudy
AT dohremee evaluationofdimensionalchangesaccordingtoagingperiodandpostcuringtimeof3dprinteddenturebaseprosthesesaninvitrostudy
AT limjunghwa evaluationofdimensionalchangesaccordingtoagingperiodandpostcuringtimeof3dprinteddenturebaseprosthesesaninvitrostudy
AT kwonjaesung evaluationofdimensionalchangesaccordingtoagingperiodandpostcuringtimeof3dprinteddenturebaseprosthesesaninvitrostudy
AT shimjunesung evaluationofdimensionalchangesaccordingtoagingperiodandpostcuringtimeof3dprinteddenturebaseprosthesesaninvitrostudy
AT kimjongeun evaluationofdimensionalchangesaccordingtoagingperiodandpostcuringtimeof3dprinteddenturebaseprosthesesaninvitrostudy