1. Curzon MJ, Losee FL. Dental caries and trace element composition of whole human enamel: Eastern United States. J Am Dent Assoc. 1977;94:1146-50.
https://doi.org/10.14219/jada.archive.1977.0391

PMid:266523

2. Jaouen K, Herrscher E, Balter V. Copper and zinc isotope ratios in human bone and enamel. Am J Phys Anthropol. 2017;162:491-500.
https://doi.org/10.1002/ajpa.23132
PMid:27858983

3. Qamar Z, Haji Abdul Rahim ZB, Chew HP, Fatima T. Influence of trace elements on dental enamel properties: A review. J Pak Med Assoc. 2017;67:116-20.
PMid:28065967

4. Riyat M, Sharma DC. Analysis of 35 inorganic elements in teeth in relation to caries formation. Biol Trace Elem Res. 2009;129:126-9.
https://doi.org/10.1007/s12011-008-8305-6
PMid:19129982

5. Fatima T, Haji Abdul Rahim ZB, Lin CW, Qamar Z. Zinc: A precious trace element for oral health care? J Pak Med Assoc. 2016;66:1019-23.
PMid:27524540

6. Eimar H, Marelli B, Nazhat SN, Abi Nader S, Amin WM, Torres J, et al. The role of enamel crystallography on tooth shade. J Dent. 2011;39:e3-e10.
https://doi.org/10.1016/j.jdent.2011.11.008
PMid:22101119

7. Eimar H, Ghadimi E, Marelli B, Vali H, Nazhat SN, Amin WM, et al. Regulation of enamel hardness by its crystallographic dimensions. Acta Biomater. 2012;8:3400-10.
https://doi.org/10.1016/j.actbio.2012.06.002
PMid:22684114

8. Ghadimi E, Eimar H, Marelli B, Nazhat SN, Asgharian M, Vali H, et al. Trace elements can influence the physical properties of tooth enamel. Springerplus. 2013;2:499.
https://doi.org/10.1186/2193-1801-2-499
PMid:24133648 PMCid:PMC3795877

9. Jiang T, Ma X, Wang Y, Tong H, Shen X, Hu Y, et al. Investigation of the effects of 30% hydrogen peroxide on human tooth enamel by Raman scattering and laser-induced fluorescence. J Biomed Opt. 2008;13:014019.
https://doi.org/10.1117/1.2870114
PMid:18315377

10. Santini A, Pulham CR, Rajab A, Ibbetson R. The effect of a 10% carbamide peroxide bleaching agent on the phosphate concentration of tooth enamel assessed by Raman spectroscopy. Dent Traumatol. 2008;24:220-3.
https://doi.org/10.1111/j.1600-9657.2007.00502.x
PMid:18352928

11. Venkatesan SM, Narayan GS, Ramachandran AK, Indira R. The effect of two bleaching agents on the phosphate concentration of the enamel evaluated by Raman spectroscopy: An ex vivo study. Contemp Clin Dent. 2012;3:172-6.
https://doi.org/10.4103/0976-237X.101081
PMid:23230356 PMCid:PMC3514929

12. Götz H, Duschner H, White DJ, Klukowska MA. Effects of elevated hydrogen peroxide 'strip' bleaching on surface and subsurface enamel including subsurface histomorphology, micro-chemical composition and fluorescence changes. J Dent. 2007;35:457-66.
https://doi.org/10.1016/j.jdent.2007.01.004
PMid:17339072

13. Sun L, Liang S, Sa Y, Wang Z, Ma X, Jiang T, et al. Surface alteration of human tooth enamel subjected to acidic and neutral 30% hydrogen peroxide. J Dent. 2011;39:686-92.
https://doi.org/10.1016/j.jdent.2011.07.011
PMid:21855600

14. Sa Y, Wang Z, Ma X, Lei C, Liang S, Sun L, et al. Investigation of three home-applied bleaching agents on enamel structure and mechanical properties: an in situ study. J Biomed Opt. 2012;17:035002.
https://doi.org/10.1117/1.JBO.17.3.035002
PMid:22502559

15. Vargas-Koudriavtsev T, Herrera-Sancho OA. Effect of tooth-bleaching on the carbonate concentration in dental enamel by Raman spectroscopy. J Clin Exp Dent. 2017;9:e101-6.
PMid:28149472 PMCid:PMC5268112

16. Weir A, Westerhoff P, Fabricius L, Hristovski K, von Goetz N. Titanium dioxide nanoparticles in food and personal care products. Environ Sci Technol. 2012;46:2242-50.
https://doi.org/10.1021/es204168d
PMid:22260395 PMCid:PMC3288463

17. Afonso RL, Pessan JP, Igreja BB, Cantagallo CF, Danelon M, Delbem AC. In situ protocol for the determination of dose-response effect of low-fluoride dentifrices on enamel remineralization. J Appl Oral Sci. 2013;21:525-32.
https://doi.org/10.1590/1679-775720130309
PMid:24473718 PMCid:PMC3891276

18. Koray M, Oner-Iyidogan Y, Soyman M, Gürdöl F. The effects of fluorides and/or trace elements on the solubilities of enamel and cementum. J Trace Elem Med Biol. 1996;10:255-9.
https://doi.org/10.1016/S0946-672X(96)80044-7

PMid:9021678

19. Huang J, Best SM, Bonfield W, Buckland T. Development and characterization of titanium-containing hydroxyapatite for medical applications. Acta Biomater. 2010;6:241-9.
https://doi.org/10.1016/j.actbio.2009.06.032
PMid:19577668