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Measurement of Volumetric and Vertical Wear of Printed Polymer Resin and Milled Polymer Infused Ceramic Network Final Restorative Materials

Loo, Christian Alexander
http://orcid.org/0009-0001-6114-2315
http://rave.ohiolink.edu/etdc/view?acc_num=osu1688816918856469

Abstract Details

2023, Master of Science, Ohio State University, Dentistry.
Purpose: Currently there is no regulatory requirement or international standard for wear resistance of dental materials and therefore no need to test prior to market launch. The purpose of this study was to evaluate and compare the vertical and volumetric wear of milled (MPs) polymer infiltrated ceramic network (PICN) and printed polymer resin (PPs) with five opposing antagonists: human enamel (EN), lithium disilicate (LI), zirconia (ZR), milled PICN (MPa) and printed polymer resin (PPa). Additionally, the wear of the antagonists will be measured. Materials and Methods: Ten of each antagonist for a total of 50 EN, LI (IPS e.max CAD, Ivoclar Vivadent), ZR (IPS e.max ZirCAD MT, Ivoclar Vivadent), MPa (Crystal Ultra, Digital Dental Laboratory), and PPa (Crowntec for NextDent, NextDent, B.V.) were shaped into spherical heads and were tested against two disc shaped substrates, MPs (Crystal Ultra, Digital Dental Laboratory) and PPs (Crowntec for NextDent, NextDent, B.V.). Samples were tested in wear machine, with a third-body food substitute, loaded with a force of 20-70N at 1 Hz for 100 000 cycles. Maximum wear height and volume were measured for tail and head portions using software (WearCompare, Leeds Digital Dentistry). The area of the wear facet of antagonists were also measured and used to estimate height and volume loss of antagonists. Data were analyzed using two-way and one-way ANOVA followed by the Tukey’s Multiple Comparisons post hoc test (α=0.05). Results: Significant differences in the amount of wear in substrates and in antagonists were found to be a result of the antagonist type, substrate type, and their interaction. Antagonists significantly affected the vertical abrasion (p=0.0011) and volumetric attrition (p=0.0134), which was seen by EN causing significantly more wear than PPa. Antagonists also significantly affected the vertical attrition (p=0.0012), where most antagonist groups were found to be significantly different. For differences in the substrates, PPs showed significantly more wear than MPs in vertical attrition (p<0.0001). The interaction of antagonist and substrate significantly affected volumetric abrasion (p=0.0238), where EN caused significantly more wear to MPs than PPs. Antagonist wear was significantly affected by antagonist type (p<0.0001) with ZR showing no visible signs of wear and CU showing the most overall; substrate type (p<0.0001) with antagonists opposing MPs showing more wear than PPs; and their interaction (p=0.0014), Conclusion: Differences in wear resistance of milled PICN and printed polymer resin final restorative materials were found, however varied depending on the opposing material and the type of wear analyzed, and no material showed clear superior wear resistance across all tests. Overall, printed polymer resins created less wear in opposing antagonists than milled PICN. Printed polymer resins are a comparable alternative to available milled PICN as final restorative materials for crown and bridge indirect restorations.
Scott Schricker (Advisor)
Robert Seghi (Committee Member)
Damian Lee (Committee Member)
65 p.
Dentistry
wear; dental materials; 3D printing; milling

Recommended Citations

Citations

  • Loo, C. A. (2023). Measurement of Volumetric and Vertical Wear of Printed Polymer Resin and Milled Polymer Infused Ceramic Network Final Restorative Materials [Master's thesis, Ohio State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=osu1688816918856469

    APA Style (7th edition)

  • Loo, Christian. Measurement of Volumetric and Vertical Wear of Printed Polymer Resin and Milled Polymer Infused Ceramic Network Final Restorative Materials. 2023. Ohio State University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=osu1688816918856469.

    MLA Style (8th edition)

  • Loo, Christian. "Measurement of Volumetric and Vertical Wear of Printed Polymer Resin and Milled Polymer Infused Ceramic Network Final Restorative Materials." Master's thesis, Ohio State University, 2023. http://rave.ohiolink.edu/etdc/view?acc_num=osu1688816918856469

    Chicago Manual of Style (17th edition)

osu1688816918856469
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