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Influence of heating rate on the flexural strength of monolithic zirconia

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dc.contributor.author Celik, Ersan
dc.contributor.author Ozturk, Caner
dc.date.accessioned 2022-08-16T06:11:12Z
dc.date.available 2022-08-16T06:11:12Z
dc.date.issued 2019
dc.identifier.uri http://doi.org/10.4047/jap.2019.11.4.202
dc.identifier.uri https://jap.or.kr/DOIx.php?id=10.4047/jap.2019.11.4.202
dc.identifier.uri http://earsiv.odu.edu.tr:8080/xmlui/handle/11489/1712
dc.description.abstract PURPOSE. Fabrication of zirconia restorations with ideal mechanical properties in a short period is a great challenge for clinicians. The purpose of the study was to investigate the effect of heating rate on the mechanical and microstructural properties of monolithic zirconia. MATERIALS AND METHODS. Forty monolithic zirconia specimens were prepared from presintered monolithic zirconia blanks. All specimens were then assigned to 4 groups according to heating rate as Control, Group 15 degrees C, Group 20 degrees C, and Group 40 degrees C. All groups were sintered according to heating rates with the sintering temperature of 1500 degrees C, a holding time of 90 minutes and natural cooling. The phase composition was examined by XRD analysis, three-point bending test was conducted to examine the flexural strength, and Weibull analysis was conducted to determine weibull modulus and characteristic strength. Average grain sizes were determined by SEM analysis. One-way ANOVA test was performed at a significance level of 0.05. RESULTS. Only tetragonal phase characteristic peaks were determined on the surface of analyzed specimens. Differences among the average grain sizes of the groups were not statistically significant. The results of the three-point bending test revealed no significant differences among the flexural strength of the groups (P>.05). Weibull modulus of groups was ranging from 3.50 to 4.74. The highest and the lowest characteristic strength values were obtained in Group 20 degrees C and Control Group, respectively. CONCLUSION. Heating rate has no significant effect on the flexural strength of monolithic zirconia. Monolithic zirconia restorations can be produced in shorter sintering periods without affecting the flexural strength by modifying the heating rate. en_US
dc.language.iso eng en_US
dc.publisher KOREAN ACAD PROSTHODONTICS, #705 KOREA SCIENCE & TECHNOLOGY CENTER, 22 TAHRANNO 7 GIL, GANGNAMGU, SEOUL, 135-703, SOUTH KOREA en_US
dc.relation.isversionof 10.4047/jap.2019.11.4.202 en_US
dc.rights info:eu-repo/semantics/openAccess en_US
dc.subject Heating rate; Monolithic zirconia; Sintering parameters en_US
dc.title Influence of heating rate on the flexural strength of monolithic zirconia en_US
dc.type article en_US
dc.relation.journal JOURNAL OF ADVANCED PROSTHODONTICS en_US
dc.contributor.department Ordu Üniversitesi en_US
dc.contributor.authorID 0000-0001-9549-2770 en_US
dc.contributor.authorID 0000-0002-3797-770X en_US
dc.identifier.volume 11 en_US
dc.identifier.issue 4 en_US
dc.identifier.startpage 202 en_US
dc.identifier.endpage 208 en_US


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