title: [The influences of lanthanum,cerium and fluorine ions to the activity of collagenase degrading cemental collagens]
abstract: The influences of trace elements lanthanum,cerium and fluorine to the activity of clostridium histolyticum collagenase(CHC) during the period of CHC degrading the cemental root collagen in vitro is studied.The results reveal that La(3+) can significantly inhibit the activity of the CHC than Ce(3+) and F(-). Therefore it suggests that lanthanum may be used as a new kind of element in preventing root caries.The mechanisms of above functions are also discussed.
authors.affiliation: Department of Oral Pathology, Ninth People's Hospital, School of Stomatology, Shanghai Second Medical University. Shanghai 200011,China.
authors.forename: J
authors.initials: J
authors.lastname: Li
authors.forename: W G
authors.initials: WG
authors.lastname: Zhang
authors.forename: A R
authors.initials: AR
authors.lastname: Liu