Journal of Prevention and Treatment for Stomatological Diseases ›› 2016, Vol. 24 ›› Issue (10): 574-577.doi: 10.12016/j.issn.2096-1456.2016.10.003

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Comparative study of enamel demineralization of different dairy (drink) goods on the primary teeth in vitro

Xiao-ling SUN1,Peng WANG2,Yu-mei CAO2,Shu-tai LIU2()   

  1. 1 Hospital of Binzhou Medical University, Yantai 264003, China
    2 Yantai Stomatological Hospital, Yantai 264000, China
  • Received:2016-01-14 Revised:2016-03-16 Online:2016-10-20 Published:2016-10-20
  • Contact: Shu-tai LIU E-mail:dentistliu@163.com

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Abstract:

Objective To compare the enamel demineralization effect of different dairy (drink) goods for providing evidence for choosing children dairy (drink) products.Methods Immerse in vitro deciduous teeth in different dairy (drink) goods (milk powder solution group; yogurt group; fruit juice milk drinks group; distilled water group) for a week, the enamel surface ultrastructure in deciduous teeth immersed in different dairy (drink) were observed and compared by scanning electron microscope.Results Three kinds of dairy products (drink) can lead to deciduous teeth enamel surface microhardness decreased (P < 0.05). Different dairy products (drink) on isolated teeth enamel demineralization degree (F = 20.14, P < 0.05), juice milk drinks after immersion of the enamel surface microhardness of the lowest, followed by milk powder solution group and yogurt group. Deciduous teeth with three different dairy (drink) after 1 weeks of immersion, the enamel surface had different degree of demineralization phenomenon, observation showed irregular enamel surface morphology under scanning electron microscope, the phenomena of dissolution and removal of cracks, voids and so on, partial visible appearance or honeycomb pit.Conclusion Dairy (drink) product all can lead to a variety of deciduous teeth enamel demineralization of different level fruit juice milk drinks can cause serious demineralization.

Key words: Dairy (drink) product, Enamel, Demineralization, Surface microhardness, Scanning electron microscopy

CLC Number: 

  • R781.1

Table 1

The SMH of enamel before and after immersed in milk drinks x ± s,GPa"

组别 乳饮品
浸泡前		 乳饮品
浸泡后		 t值 P值
奶粉液组 250.33 ± 19.12 235.24± 21.33 0.820 <0.001
酸奶组 248.26 ± 17.66 233.42± 40.23 0.100 <0.001
果汁型乳饮品组 250.45 ± 13.52 200.61± 30.51 0.032 <0.001
蒸馏水组 251.47 ± 19.57 251.46± 42.71 0.044 = 0.998

Figure 1

SEM pictures of enamel surfaces after immersed in different dairy (drink) goods scanning SEM × 2 000"

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