The Crystal Structure and Mechanical Characteristics of Enamel and Dentin of Primary and Permanent Teeth

Abstract:

Objective: To test and contrastive analysis the crystal structure and mechanical characteristics of enamel and dentin of primary and permanent teeth by XRD and contact angle meter, provide information and experimental data for bionics and designs of dental materials. Methods: Teeth were randomly divided into four groups, including permanent teeth enamel group, permanent teeth dentin group, primary teeth enamel group, and primary teeth primary teeth. The crystal structure and mechanical characteristics of teeth were tested by XRD and contact angle meter. The results were analyzed with one-way ANOVA. Results: The crystalline and grain size of enamel were significantly larger than dentin’s. The crystalline and grain size of enamel and dentin of permanent teeth were also larger than primary teeth. Conclusions: The XRD and contact angle of primary and permanent teeth are closely related to their structures, Dental filling material to give full consideration to their different property.

• Periodical: Advanced Materials Research (Volume 934)
• Pages: 177-181
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.934.177
• Online since: May 2014
• Authors: Rui Zhang*, Qian Qian Lin, Fan Bieke Wu, Zhen Guo Wang, Bin Liu
• Keywords: Contact Angle, Dentin, Enamel, X-Ray Diffraction (XRD)

References

[1] Pi Xin. Oral Anatomy and Physiology, Third Edition [M]. Beijing: People's Health Publishing House. 1994: 2-60.

[2] Han Ke, Lu Ruqian, Lü Peijun, et al. Three dimensional reconstruction of human permanent teeth. [J]. Chinese Journal of Stomatology, 1998, 33(2): 94-96.

[3] Huang Yi. The study on the mechanical properties of the microstructure and the micro-friction behavior of the human tooth enamel. [ Master degree Thesis]. Southwest Jiaotong University. 2009, 4-6.

[4] XU Lu, Shao Jingling. Eruption time and sequence of permanent teeth and its relationship with malocclusions [J]. Chinese Journal of Conservative Dentistry, 2007, 17(4): 236-239.

[5] Liu Weidong, Guo Zongying. dentition and eruption of Childhood [J]. Journal of Nursing, 1993, 8(3): 4-5.

[6] Wang, Zhihua; Wang, Mingyi; Yuan; yin. Children oral microbiology and early deciduous teeth caries research progress [J]. Chinese journal of microecology 2007; 12(5): 471.

[7] Chen, Min, Wang, Wancheng. The relation between saliva SIgA and decay during three phases of children denture [J]. Journal of Bethune medical university journal 1994; 20 (2): 194-195.

[8] Bai, Ke; Zhang, Taihua; Yang, Zhiyu; Song, Fan; Yang, Xiaoda; Wang, Kui. Teeth of isotropic, gradient distribution and the metallicity mechanical behavior [J]. Chinese science bulletin 2007; 52 (8): 870-874.

[9] Wang, Xiaobo；Yao，Yueling. Tooth abrasion and its measuring method [J]. Oral material equipment magazine 2002; 11 (1): 40-42.

[10] Huang LZ, Tang L, Xu RS. A bio-electrochemical theory in pathogenesis of dental caries [J]. Chin J Stomatol, 1997, 32(1): 34-36.

[11] Le Gyros, R.Z. Calcium phosphates in oral biology and medicine [J]. Monographs in oral science, 1991, 15: 1-201.

[12] Zhao Wei, Yu Dongsheng, Ling Junqi, Wang Shuozhi, Yu Shifeng. XRD-diffraction studies of apatite which is from enamel and dentine of normal primary and permanent teeth [J]. Journal of Sun Yat-Sen University (Medical Sciences). 2008, 24: 11-14.

[13] Gu Chunyuan, Di Qinfeng, Shi Liyi, Wu Fei, Wang Wenchang, Yu Zubin. Experimental investigation of super hydrophobic properties of the surface constructed by nanoparticles[J]. Acta Physica Sinica. 2008, 57(5): 3071-3076.