A preliminary study on mechanical residual stress of dental ceramic by Raman spectra

doi:10.3877/cma.j.issn.1674-1366.2016.04.004

Chinese Journal of Stomatological Research(Electronic Edition) ›› 2016, Vol. 10 ›› Issue (04): 250-254. doi: 10.3877/cma.j.issn.1674-1366.2016.04.004

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A preliminary study on mechanical residual stress of dental ceramic by Raman spectra

Xiaodong Wang¹, Li Dao¹, Yutao Jian¹, Ke Zhao¹^,^†()

^1. Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Stomatology, Guangzhou 510055, China

Received:2016-05-28 Online:2016-08-01 Published:2016-08-01
Contact: Ke Zhao
About author:
Corresponding author: Zhao Ke, Email: zhaoke@mail.sysu.edu.cn

Abstract

Abstract:

Objective

To investigate the influence of static loading on crystalline change and mechanical residual stress in lithium disilicate glass-ceramic (LDG) by Raman spectra.

Methods

LDG ceramic disks specimens were fabricated according to the manufacturer′s instructions. Biaxial flexural testing with preloading of 100 N or 400 N was conducted. Spectra were collected using a Raman microspectroscopy (laser emitting at 785 nm) from the central 2 mm × 2 mm region of tensile surface after each preloading. The residual micro-stresses within the ceramic were evaluated according to the displacement of specific band peak, and the Raman stress maps were coincided.

Results

Raman spectra of LDG ceramic demonstrated a specific band at 413 cm^-1 which was tested as Si₂O₅. Displacement of specific band reflected effectively the internal residual stress. The position of the band is 413.2-413.6 cm^-1 after 100 N preloading with residual stress concentration to some degree. While the displacement enhanced from 413.1 cm^-1 to 414.6 cm^-1 after 400 N preloading, the stress concentration became more obvious and appeared as a stress concentration region.

Conclusions

The mechanical residual stress is confirmed with application of Raman microspectroscopy in LDG ceramic after static loading. As the preloading values increase, the residual stress concentration becomes more obvious.

Key words: Raman spectra, Residual stress, Lithium disilicate glass-ceramic

Xiaodong Wang, Li Dao, Yutao Jian, Ke Zhao. A preliminary study on mechanical residual stress of dental ceramic by Raman spectra[J]. Chinese Journal of Stomatological Research(Electronic Edition), 2016, 10(04): 250-254.

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References 19

[1]	Zarone F, Russo S, Sorrentino R. From porcelain-fused-to-metal to zirconia：clinical and experimental considerations[J]. Dent Mater，2011，27(1):83-96.
[2]	Guess PC, Schultheis S, Bonfante EA，et al. All-ceramic systems：laboratory and clinical performance[J]. Dent Clin North Am，2011，55(2):333-352.
[3]	Solá-Ruiz MF, Lagos-Flores E, Román-Rodriguez JL，et al. Survival rates of a lithium disilicate-based core ceramic for three-unit esthetic fixed partial dentures：a 10-year prospective study[J]. Int J Prosthodont，2013，26(2):175-180.
[4]	Makarouna M, Ullmann K, Lazarek K，et al. Six-year clinical performance of lithium disilicate fixed partial dentures[J]. Int J Prosthodont，2011，24(3):204-206.
[5]	Vigolo P, Mutinelli S. Evaluation of zirconium-oxide-based ceramic single-unit posterior fixed dental prostheses（FDPs）generated with two CAD/CAM systems compared to porcelain-fused-to-metal single-unit posterior FDPs：a 5-year clinical prospective study[J]. J Prosthodont，2012，21(4):265-269.
[6]	Zhang Y, Sailer I, Lawn BR. Fatigue of dental ceramics[J]. J Dent，2013，41(12):1135-1147.
[7]	吴玮琦，程绮婷，张骏，等.牙科陶瓷的动疲劳性能研究及循环疲劳寿命数值计算[J/CD].中华口腔医学研究杂志：电子版，2011，5(1):37-43.
[8]	Zhao K, Wei YR, Pan Y，et al. Influence of veneer and cyclic loading on failure behavior of lithium disilicate glass-ceramic molar crowns[J]. Dent Mater，2014，30(2):164-171.
[9]	Zhang Y, Sailer I, Lawn BR. Fatigure of dental ceramics[J]. J Dent，2013，41(12):1135-1147.
[10]	薛丽丽，闫冰，李一.拉曼光谱在口腔医学中的应用[J].华西口腔医学杂志，2015，33(2):214-217.
[11]	Pezzotti G, Sakakura S. Study of the toughening mechanisms in bone and biomimetic hydroxyapatite materials using Raman microprobe spectroscopy[J]. J Biomed Mater Res A，2003，65(2):229-236.
[12]	He LH, Carter EA, Swain MV. Characterization of nanoindentation-induced residual stresses in human enamel by Raman microspectroscopy[J]. Anal Bioanal Chem，2007，389(4):1185-1192.
[13]	ISO DIN 6872：2008 Dentistry-ceramic materials[S]. Geneva，Switzerland：International Organization for Standard，2008.
[14]	Swinson B, Jerjes W, El-Maaytah M，et al. Optical techniques in diagnosis of head and neck malignancy[J]. Oral Oncol，2006，42(3):221-228.
[15]	Wachsmann-Hogiu S, Weeks T, Huser T. Chemical analysis in vivo and in vitro by Raman spectroscopy—from single cells to humans[J]. Curr Opin Biotechnol，2009，20(1):63-73.
[16]	Guess PC, Schultheis S, Bonfante EA，et al. All-ceramic systems：laboratory and clinical performance[J]. Dent Clin North Am，2011，55(2):333-352.
[17]	Pezzotti G. Introducing a unique measurement for biomaterial nanomechanics[M]. Key Engineering Materials，2003（240-242）：893-900.
[18]	Watanabe M, Hattori Y, Satoh C. Bite force distribution on the dental arch in normal dentition. In：Brain and Oral Functions[M]. Amsterdam：Elsevier Science，1995：399.
[19]	Wang XD, Jian YT, Guess PC，et al. Effect of core ceramic grinding on fracture behavior of bilayered lithium disilicate glass-ceramic under two loading schemes[J]. J Dent，2014，42(11):1436-1445.

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