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Orthodontic shear bond strength and ultimate load tests of CAD/CAM produced artificial teeth

OBJECTIVES: To investigate whether artificial CAD/CAM processed (computer-aided design/manufacturing) teeth could be a feasible option for the production of dental in vitro models for biomechanical testing. MATERIAL AND METHODS: Disks (n = 10 per group) made from two different CAD/CAM-materials, one...

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Autores principales: Roser, Christoph J., Rückschloß, Thomas, Zenthöfer, Andreas, Rammelsberg, Peter, Lux, Christopher J., Rues, Stefan
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer Berlin Heidelberg 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9708765/
https://www.ncbi.nlm.nih.gov/pubmed/35982349
http://dx.doi.org/10.1007/s00784-022-04676-7
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author Roser, Christoph J.
Rückschloß, Thomas
Zenthöfer, Andreas
Rammelsberg, Peter
Lux, Christopher J.
Rues, Stefan
author_facet Roser, Christoph J.
Rückschloß, Thomas
Zenthöfer, Andreas
Rammelsberg, Peter
Lux, Christopher J.
Rues, Stefan
author_sort Roser, Christoph J.
collection PubMed
description OBJECTIVES: To investigate whether artificial CAD/CAM processed (computer-aided design/manufacturing) teeth could be a feasible option for the production of dental in vitro models for biomechanical testing. MATERIAL AND METHODS: Disks (n = 10 per group) made from two different CAD/CAM-materials, one fiber-reinforced composite (FRC; Trinia, Bicon) and one polymethylmethacrylate-based resin (PMMA; Telio CAD, Ivoclar Vivadent), as well as bovine teeth (n = 10), were tested for their shear bond strength (SBS) and scored according to the adhesive remnant index (ARI). In addition, CAD/CAM-manufactured lower incisor teeth were tested for their ultimate load (F(u)). RESULTS: With regard to SBS, both PMMA (17.4 ± 2.2 MPa) and FRC (18.0 ± 2.4 MPa) disks showed no significant difference (p = 0.968) compared to bovine disks (18.0 ± 5.4 MPa). However, the samples differed with regard to their failure mode (PMMA: ARI 4, delamination failure; FRC: ARI 0 and bovine: ARI 1.6, both adhesive failure). With regard to F(u), FRC-based teeth could withstand significantly higher loads (708 ± 126 N) than PMMA-based teeth (345 ± 109 N) (p < 0.01). CONCLUSION: Unlike PMMA-based teeth, teeth made from FRC showed sufficiently high fracture resistance and comparable SBS. Thus, FRC teeth could be a promising alternative for the production of dental in vitro models for orthodontic testing. CLINICAL RELEVANCE: CAD/CAM-processed teeth made from FRC enable the use of standardized geometry and constant material properties. Using FRC teeth in dental in vitro studies has therefore the potential to identify differences between various treatment options with rather small sample sizes, while remaining close to the clinical situation.
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spelling pubmed-97087652022-12-01 Orthodontic shear bond strength and ultimate load tests of CAD/CAM produced artificial teeth Roser, Christoph J. Rückschloß, Thomas Zenthöfer, Andreas Rammelsberg, Peter Lux, Christopher J. Rues, Stefan Clin Oral Investig Original Article OBJECTIVES: To investigate whether artificial CAD/CAM processed (computer-aided design/manufacturing) teeth could be a feasible option for the production of dental in vitro models for biomechanical testing. MATERIAL AND METHODS: Disks (n = 10 per group) made from two different CAD/CAM-materials, one fiber-reinforced composite (FRC; Trinia, Bicon) and one polymethylmethacrylate-based resin (PMMA; Telio CAD, Ivoclar Vivadent), as well as bovine teeth (n = 10), were tested for their shear bond strength (SBS) and scored according to the adhesive remnant index (ARI). In addition, CAD/CAM-manufactured lower incisor teeth were tested for their ultimate load (F(u)). RESULTS: With regard to SBS, both PMMA (17.4 ± 2.2 MPa) and FRC (18.0 ± 2.4 MPa) disks showed no significant difference (p = 0.968) compared to bovine disks (18.0 ± 5.4 MPa). However, the samples differed with regard to their failure mode (PMMA: ARI 4, delamination failure; FRC: ARI 0 and bovine: ARI 1.6, both adhesive failure). With regard to F(u), FRC-based teeth could withstand significantly higher loads (708 ± 126 N) than PMMA-based teeth (345 ± 109 N) (p < 0.01). CONCLUSION: Unlike PMMA-based teeth, teeth made from FRC showed sufficiently high fracture resistance and comparable SBS. Thus, FRC teeth could be a promising alternative for the production of dental in vitro models for orthodontic testing. CLINICAL RELEVANCE: CAD/CAM-processed teeth made from FRC enable the use of standardized geometry and constant material properties. Using FRC teeth in dental in vitro studies has therefore the potential to identify differences between various treatment options with rather small sample sizes, while remaining close to the clinical situation. Springer Berlin Heidelberg 2022-08-18 2022 /pmc/articles/PMC9708765/ /pubmed/35982349 http://dx.doi.org/10.1007/s00784-022-04676-7 Text en © The Author(s) 2022 https://creativecommons.org/licenses/by/4.0/Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Original Article
Roser, Christoph J.
Rückschloß, Thomas
Zenthöfer, Andreas
Rammelsberg, Peter
Lux, Christopher J.
Rues, Stefan
Orthodontic shear bond strength and ultimate load tests of CAD/CAM produced artificial teeth
title Orthodontic shear bond strength and ultimate load tests of CAD/CAM produced artificial teeth
title_full Orthodontic shear bond strength and ultimate load tests of CAD/CAM produced artificial teeth
title_fullStr Orthodontic shear bond strength and ultimate load tests of CAD/CAM produced artificial teeth
title_full_unstemmed Orthodontic shear bond strength and ultimate load tests of CAD/CAM produced artificial teeth
title_short Orthodontic shear bond strength and ultimate load tests of CAD/CAM produced artificial teeth
title_sort orthodontic shear bond strength and ultimate load tests of cad/cam produced artificial teeth
topic Original Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9708765/
https://www.ncbi.nlm.nih.gov/pubmed/35982349
http://dx.doi.org/10.1007/s00784-022-04676-7
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