1.The effects of high relative molecular mass salivary mucin on the protection of tooth enamel against demineralization observed by electronic microscopy
Yan XU ; Jinqiu YUE ; Han JIANG
Journal of Practical Stomatology 2001;0(01):-
Objective: To observe the effect of purified high rela ti ve molecular mass mucin(MG1) pellicle on the protection of human dental enamel against demineralization.Methods: MGI was extracted from human saliva and purified.MGI pellicle and whole saliva pellicle were formed on dental enamel samples in vitro ,Then The samples were treated by 34 mmol/L citric acid for 1 min.The demineralization of the samples was observed by scanning electronic microscopy(SEM). Results:After treatment by the acid the enamel surfaces covered by MGI pellicles or whol e saliva pellicle showed relatively smooth and normal enamel morphological feat ures, on the contrary the surface without pellicle showed large area of deminer alization and bee nest like appearance. Conclusion: The data indicate that the MG1 in enamel pellicle contribute to its protective effec ts against acidic attack on the enamel surface.
2.A CONTRAST OBSERVATION ON APPLYING TWO DIFFERENT KINDS OF RESIN SPLINT TO THE FIXATION OF LOOSED TEETH
Jianzhong GOU ; Wenhong ZHU ; Jinqiu HAN
Journal of Xi'an Jiaotong University(Medical Sciences) 1981;0(02):-
Two kinds of splint consisted of light-cured orselfcuring resin with nylon yarn were applied to fixthe loosed teeth caused by periodontitis. The re-sults showed that the light-cured resin with nylonyarn splint is much better than the self-cured resinwith nylon yarn splint (P