Study of dental zirconia reinforced lithium silicate for its use as a personal accidental dosimeter

Sfampa, Ioanna K.; Malletzidou, Lamprini; Pandoleon, Panagiotis; Kitis, G.

doi:10.1016/j.apradiso.2019.109024

Cited by 9 publications

(4 citation statements)

References 31 publications

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“…4 ). Bands near to 731 and 847 cm −1 were attributed to LM [ 17 , 18 ]. Peaks around 633, 755, 785, 1020 and 1110 cm −1 are intrinsic for LD [ 17 – 19 ].…”

Section: Resultsmentioning

confidence: 99%

“…Bands near to 731 and 847 cm −1 were attributed to LM [ 17 , 18 ]. Peaks around 633, 755, 785, 1020 and 1110 cm −1 are intrinsic for LD [ 17 – 19 ]. The hump at 900 cm −1 was assigned to vibration of pyro-silicates (Si 2 O 7 ) 6− as Q 1 [ 20 ].…”

Section: Resultsmentioning

confidence: 99%

“…The kink at 996 cm −1 was caused by the vibration of SiO 2 [ 21 ]. The fluctuation below 608 cm −1 was related to Li 3 PO 4 [ 17 ]. Generally, the LM and Li 3 PO 4 phases were detected in the non-fired, 780–800 °C, 780–800 °C (H14), 800–820 °C, 800–820 °C (H14), and 820–840 °C (D) groups.…”

Section: Resultsmentioning

confidence: 99%

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The effect of prolonged holding time on the mechanical property and microstructural property of lithium disilicate glass-ceramic

Lin

Wang

Zhang

et al. 2022

J Mater Sci: Mater Med

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Repeat firing produces uncertainty about stabilizing lithium disilicate glass-ceramic (LDGC) material properties, even though prolonged holding time can enhance the mechanical property of LDGC during a single firing cycle. However, the effect of prolonged holding time and repeat firing on the mechanical property and microstructure of LDGC is not fully understood. In the present study, three groups of LDGC material were created: (i) extension of holding time (7 vs. 14 vs. 28 min) at 780–800 °C; (ii) holding time extension (7 vs. 14 min) and dual sintering at 800–820 °C, respectively; (iii) dual sintering with prolonged holding time (7 vs. 14 min) at 820–840 °C. The nano-indenter test revealed that prolonged holding time (14 and 28 min) promoted the enhancement of LDGC hardness and Young’s modulus. X-ray photoelectron spectroscopy, X-ray diffraction and Fourier transform infrared spectroscopy confirmed that prolonged holding time increased and stabilized LD phase in LDGC, as well as induced residual compressive stress. Scanning electron microscopy showed that prolonged holding time increased LD crystal grains homogeneously and facilitated LDGC to form dense interlocking structure without enlarging crystal size grains significantly. In contrast, LDGC that dual sintered alone at 820–840 °C possessed inferior mechanical properties, coupled with heterogeneous crystal phases, residual tensile stress, and melted crystals grains in the porous microstructure. Interestingly, these deteriorated properties of LDGC caused by dual sintering alone could be counteracted by prolonging the holding time. Nevertheless, the LDGC materials displayed an excellent biocompatibility throughout the study. This study identified that prolonged holding time during repeated firing cycles stabilized LD phase and crystal grain size of LDGC, thus enhanced the mechanical properties, which provided a new insight to extend the repeat fired restoration longevity of LDGC.

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“…4 ). Bands near to 731 and 847 cm −1 were attributed to LM [ 17 , 18 ]. Peaks around 633, 755, 785, 1020 and 1110 cm −1 are intrinsic for LD [ 17 – 19 ].…”

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

The effect of prolonged holding time on the mechanical property and microstructural property of lithium disilicate glass-ceramic

Lin

Wang

Zhang

et al. 2022

J Mater Sci: Mater Med

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show abstract

“…Glass materials have been found to have several favorable physical and chemical properties because of their transparency in the visible light range and their tendency for hosting doping elements (3)(4)(5)(6)(7)(8)(9) and they can be used in different radiation-related applications (10)(11)(12). Among glass materials, borate glasses doped/activated by rare earth or transition ions display auspicious results in a wide range of applications (5)(6)(7)(8)(9).…”

Section: Introductionmentioning

confidence: 99%

Thermoluminescence Characteristics of Copper and Terbium Co-Doped Lithium Tetraborate Glass

El-Faramawy,

El-Kinawy,

Farouk

et al. 2023

Radiation Research

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Analysis of thermoluminescence characteristics of a lithium disilicate glass ceramic using a nonlinear autoregressive with exogenous input model

2020

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Dental ceramics because of their translucency exemplify the most biologically realistic restorative materials for aesthetic rehabilitation and can be used to estimate dose accumulated as a result of a nuclear accident or attack. In this study, lithium disilicate ceramic obtained from Vivadent Ivoclar, Turkey was studied for its thermoluminescence (TL) properties. The lithium disilicate glass ceramic was irradiated with a 90Sr–90Y β‐source from 10 Gy to 6.9 kGy and the results read on a Harshaw 3500 reader. The TL peak of lithium disilicate ceramic showed sublinearity in the range 12 Gy to 6 kGy. The area under the TL glow curve increased by about 25% by the end of 10th measurement cycle. Fading values were also considered after irradiation. Lithium disilicate ceramic samples underwent 37% fading after 1 h and 59% fading after 1 week. In addition to the experimental study, a software‐based simulation study was also undertaken using a MATLAB system identification tool. Experimental studies are generally time consuming and some materials used for experiments are very expensive. In this study, experimental, and simulation results were compared and produced almost the same outcome with a similarity of more than 98%.

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Study of dental zirconia reinforced lithium silicate for its use as a personal accidental dosimeter

Cited by 9 publications

References 31 publications

The effect of prolonged holding time on the mechanical property and microstructural property of lithium disilicate glass-ceramic

The effect of prolonged holding time on the mechanical property and microstructural property of lithium disilicate glass-ceramic

Thermoluminescence Characteristics of Copper and Terbium Co-Doped Lithium Tetraborate Glass

Analysis of thermoluminescence characteristics of a lithium disilicate glass ceramic using a nonlinear autoregressive with exogenous input model

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