Thapanee SrichumpongPimnida PhokhinchatchananNoparat ThongpunDuangrudee ChaysuwanKallaya SuputtamongkolKasetsart UniversityMahidol University2020-01-272020-01-272019-01-01Dental Materials Journal. Vol.38, No.3 (2019), 378-38718811361028745472-s2.0-85067114119https://repository.li.mahidol.ac.th/handle/20.500.14594/50740© 2019, Japanese Society for Dental Materials and Devices. All rights reserved. The mica-based glass-ceramics were prepared in the SiO2-Al2O3-MgO-MgF2-SrCO3-CaCO3-CaF2-P2O5 glass system. There were four mica-based glass-ceramics produced in this study according to the pigment added (CeO2 or Pr-ZrSiO4/Fe-ZrSiO4) and crystallization time (5–35 min). Four dental glass-ceramics, which were leucite-based, lithium disilicate-based and two zirconia reinforced lithium silicate ceramics, were also tested. The phase identification of mica-based glass-ceramics was performed using an X-ray diffractometer. The fracture toughness (KIC) was determined using the fractographic analysis approach. The one-way ANOVA was used to analyze the significant differences among the obtained KIC values at a=0.05. The results from the phase analysis showed that the mica glassceramics consisted of calcium-mica, fluorapatite and strontiumapatite. The KIC of mica-based glass-ceramics ranged between 1.36 to 1.53 MPa•m1/2 which were superior to only that of a leucite-based glass-ceramic. The shade and translucency of mica-based glassceramics appeared to be acceptable for dental application when compared with other dental glass-ceramics.Mahidol UniversityDentistryMaterials ScienceArticleSCOPUS10.4012/dmj.2018-077