Influence of occlusal anatomy on acrylic resin CAD/CAM crowns fracture load and stress distribution.

Authors

  • Alexandre Luiz Souto Borges Department of Dental Material and Prosthodontics, São Paulo State University, Institute of Science and Technology – São José dos Campos, SP, Brazil. http://orcid.org/0000-0002-5707-7565
  • Aline Lins de Lima Department of Dental Material and Prosthodontics, São Paulo State University, Institute of Science and Technology – São José dos Campos, SP, Brazil. http://orcid.org/0000-0003-3105-5541
  • Larissa Mendes Campaner Department of Dental Material and Prosthodontics, São Paulo State University, Institute of Science and Technology – São José dos Campos, SP, Brazil. http://orcid.org/0000-0002-3262-2379
  • Marco Antonio Bottino Department of Dental Material and Prosthodontics, São Paulo State University, Institute of Science and Technology – São José dos Campos, SP, Brazil. http://orcid.org/0000-0003-0077-3161
  • Amanda Maria de Oliveira Dal Piva Department of Dental Material and Prosthodontics, São Paulo State University, Institute of Science and Technology – São José dos Campos, SP, Brazil. http://orcid.org/0000-0003-3105-5541
  • João Paulo Mendes Tribst Department of Dental Material and Prosthodontics, São Paulo State University, Institute of Science and Technology – São José dos Campos, SP, Brazil. https://orcid.org/0000-0002-5412-3546

DOI:

https://doi.org/10.5195/d3000.2021.118

Keywords:

Finite Element Analysis, Computer-Aided Design, Crowns, Acrylic Resins, Weight-Bearing

Abstract

Objectives: This study compared the influence of occlusal anatomy on acrylic CAD/CAM crowns fracture load and stress distribution. The null hypothesis was that there would be no difference between the provisional crowns fracture load and stress according to different occlusal anatomy.

Methods: A full-crown preparation was simulated using dentin analogue (G10, Protec, São Paulo, Brazil) totaling 20 identical preparations. Next, twenty acrylic crowns were milled using different occlusal design parameter (Young or Adult) available in the software database. The crowns were cemented (Temp-bond, NE Kerr Dental, Brea, CA, USA) and fractured using a compressive load (0.5 mm/min of cross-head speed). Data were analyzed by using one-way ANOVA and Tukey tests (p< 0.05). A similar geometry was modeled and exported to the analysis software to perform a static structural analysis. The maximum principal stress was calculated using the finite element method with 300 N chewing load simulation.

Results: The occlusal anatomy significantly influenced the load-to-fracture (p<0.05). Young design showed lower fracture load (1139±132 N) than Adult design (2007±345 N). The tensile stress distribution showed a similar pattern for both groups however the highest stress peak was calculated for Young design (76 MPa) in the occlusal surface.

Conclusion: The anatomy design with higher cusp angulation and occlusal sulcus more evident can increase the stress concentration and reduce the fracture load for acrylic resin CAD/CAM crowns.

References

Abdullah AO, Tsitrou EA, Pollington S. Comparative in vitro evaluation of CAD/CAM vs conventional provisional crowns. J Appl Oral Sci 2016; 24(3):258-63.

Rodrigues VA, Dal Piva AO, Yamaguchi CA, Borges AL, Mukai MK, Tribst JP. Effect of framework type on survival probability of implant-supported temporary crowns: An in vitro study. J Clin Exp Dent 2020; 12(5):433-9.

Reeponmaha T, Angwaravong O, Angwarawong T. Comparison of fracture strength after thermo-mechanical aging between provisional crowns made with CAD/CAM and conventional method. J Adv Prosthodont 2020; 12(4):218-24.

Winter A, Schurig A, Rasche E, Rösner F, Kanus L, Schmitter M. The flexural strength of CAD/CAM polymer crowns and the effect of artificial ageing on the fracture resistance of CAD/CAM polymer and ceramic single crowns. J Mater Sci Mater Med 2019; 31(1):9.

Alt V, Hannig M, Wöstmann B, Balkenhol M. Fracture strength of temporary fixed partial dentures: CAD/CAM versus directly fabricated restorations. Dent Mater 2011; 27(4):339-47.

Bowley JF, Ichim IP, Kieser JA, Swain MV: FEA evaluation of the resistance form of a premolar crown. J Prosthodont 2013; 22(4):304-12.

Sornsuwan T, Swain MV. Influence of occlusal geometry on ceramic crown fracture; role of cusp angle and fissure radius. J Mech Behav Biomed Mater 2011; 4(7):1057-66.

Zhang Z, Sornsuwan T, Rungsiyakull C, Li W, Li Q, Swain MV. Effects of design parameters on fracture resistance of glass simulated dental crowns. Dent Mater 2016; 32(3):373-84.

Shahmoradi M, Wan B, Zhang Z, Wilson T, Swain M, Li Q. Monolithic crowns fracture analysis: The effect of material properties, cusp angle and crown thickness. Dent Mater 2020; 36(8):1038-51.

Dal Piva AO, Tribst JP, Borges AL, de Melo RM, Bottino MA. Influence of substrate design for in vitro mechanical testing. J Clin Exp Dent 2019; 1(11):119-25.

Souza AC, Xavier TA, Platt JA, Borges AL. Effect of base and inlay restorative material on the stress distribution and fracture resistance of weakened premolars. Oper Dent 2015; 40(4):158-66.

Tribst JPM, Monteiro JB, Venturini AB, Pereira GKR, Bottino MA, Melo RM, Valandro LF. Fatigue Failure Load of Resin-bonded Simplified Lithium Disilicate Glass-Ceramic Restorations: Effect of Ceramic Conditioning Methods. J Adhes Dent. 2019;21(4):373-381.

Tribst JP, Dal Piva AO, Madruga CF, Valera MC, Bresciani E, Bottino MA, de Melo RM. The impact of restorative material and ceramic thickness on CADCAM endocrowns. J Clin Exp Dent. 2019; 1;11(11):969-977.

Penteado MM, Tribst JPM, Dal Piva AM, Ausiello P, Zarone F, Garcia-Godoy F, Borges AL. Mechanical behavior of conceptual posterior dental crowns with functional elasticity gradient. Am J Dent. 2019; 32(4):165-168.

Calderon PDS, Kogawa EM, Lauris JRP, Conti PCR. The influence of gender and bruxism on the human maximum bite force. J Appl Oral Sci 2006;14(6):448-53.

Karaman T, Eser B, Altintas E, Atala MH. Evaluation of the effects of finish line type and width on the fracture strength of provisional crowns. Odontology 2020; 1-6.

Dureja I, Yadav B, Malhotra P, Dabas N, Bhargava A, Pahwa R. A comparative evaluation of vertical marginal fit of provisional crowns fabricated by computer-aided design/computer-aided manufacturing technique and direct (intraoral technique) and flexural strength of the materials: An in vitro study. J Indian Prosthodont Soc 2018; 18(4):314-20.

Muric A, Gokcen Röhlig B, Ongul D, Evlioglu G. Comparing the precision of reproducibility of computer-aided occlusal design to conventional methods. J Prosthodont Res 2019; 63(1):110-4.

Fasbinder DJ, Poticny DJ. Accuracy of occlusal contacts for crowns with chairside CAD/CAM techniques. Int J Comput Dent 2010; 13(4):303-16.

Wan B, Shahmoradi M, Zhang Z, Shibata Y, Sarrafpour B, Swain M, Li Q. Modelling of stress distribution and fracture in dental occlusal fissures. Scientific reports 2019; 9(1):1-10.

da Fonseca GF, Dal Piva AM, Tribst JP, Borges AL. Influence of restoration height and masticatory load orientation on ceramic endocrowns. J Contemp Dent Pract 2018; 19(9):1052-7.

Syam S, Soegiharto BM, Siregar E. Stress distribution of maxillary anterior retraction using miniscrew with anterior hook on continuous wire (3D simulation finite element analysis). J Int Dent Medical Res 2018; 11(3):791-798.

Archangelo KC, Penteado MM, Dal Piva AMDO, Nogueira AS, Tribst JPM, Borges A LS. Stress distribution and failure load of multilayer and monolayer glass ceramic. Braz Dent Scii. 2019; 22(1), 17-22.

Costa VL, Tribst JP, Borges AL. Influence of the occlusal contacts in formation of Abfraction Lesions in the upper premolar. Braz Dent Sci. 2017; 20:115–123.

De Andrade GS, Tribst JPM, Orozco EI, Augusto MG, Bottino MA, Borges AL, Anami LC, Saavedra GD. Influence of different post-endodontic restorations on the fatigue survival and biomechanical behavior of central incisors. Am J Dent. 2020; 33(5):227-234.

Saisadan D, Manimaran P, Meenapriya PK. In vitro comparative evaluation of mechanical properties of temporary restorative materials used in fixed partial denture. J Pharm Bioallied Sci. 2016 Oct;8(Suppl 1):S105-S109.

Türp JC, Greene CS, Strub JR. Dental occlusion: a critical reflection on past, present and future concepts. J Oral Rehabil 2008; 35(6):446-53.

Tribst JPM, Dal Piva AMDO, Lopes GC, Borges ALS, Bottino MA, Özcan M, et al. Biaxial flexural strength and Weilbull characteristics of adhesively luted hybrid and reinforced CAD/CAM materials to dentin: effect of self-etching ceramic primer versus hydrofluoric acid etching. J Adhes Sci Technol. 2020; 34(12):1253-68

Reeponmaha T, Angwaravong O, Angwarawong T. Comparison of fracture strength after thermo-mechanical aging between provisional crowns made with CAD/CAM and conventional method. J Adv Prosthodont. 2020 Aug;12(4):218-224.

Downloads

Published

2021-05-06

Issue

Vol. 9 No. 1 (2021)

Section

Adults & the Elderly

License

Authors who publish with this journal agree to the following terms:

  1. The Author retains copyright in the Work, where the term “Work” shall include all digital objects that may result in subsequent electronic publication or distribution.
  2. Upon acceptance of the Work, the author shall grant to the Publisher the right of first publication of the Work.
  3. The Author shall grant to the Publisher and its agents the nonexclusive perpetual right and license to publish, archive, and make accessible the Work in whole or in part in all forms of media now or hereafter known under a Creative Commons Attribution 4.0 International License or its equivalent, which, for the avoidance of doubt, allows others to copy, distribute, and transmit the Work under the following conditions:
    1. Attribution—other users must attribute the Work in the manner specified by the author as indicated on the journal Web site;
    with the understanding that the above condition can be waived with permission from the Author and that where the Work or any of its elements is in the public domain under applicable law, that status is in no way affected by the license.
  4. The Author is able to enter into separate, additional contractual arrangements for the nonexclusive distribution of the journal's published version of the Work (e.g., post it to an institutional repository or publish it in a book), as long as there is provided in the document an acknowledgement of its initial publication in this journal.
  5. Authors are permitted and encouraged to post online a prepublication manuscript (but not the Publisher’s final formatted PDF version of the Work) in institutional repositories or on their Websites prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work. Any such posting made before acceptance and publication of the Work shall be updated upon publication to include a reference to the Publisher-assigned DOI (Digital Object Identifier) and a link to the online abstract for the final published Work in the Journal.
  6. Upon Publisher’s request, the Author agrees to furnish promptly to Publisher, at the Author’s own expense, written evidence of the permissions, licenses, and consents for use of third-party material included within the Work, except as determined by Publisher to be covered by the principles of Fair Use.
  7. The Author represents and warrants that:
    1. the Work is the Author’s original work;
    2. the Author has not transferred, and will not transfer, exclusive rights in the Work to any third party;
    3. the Work is not pending review or under consideration by another publisher;
    4. the Work has not previously been published;
    5. the Work contains no misrepresentation or infringement of the Work or property of other authors or third parties; and
    6. the Work contains no libel, invasion of privacy, or other unlawful matter.
  8. The Author agrees to indemnify and hold Publisher harmless from Author’s breach of the representations and warranties contained in Paragraph 6 above, as well as any claim or proceeding relating to Publisher’s use and publication of any content contained in the Work, including third-party content.

Revised 7/16/2018. Revision Description: Removed outdated link.