title: [A survey of the changes of serum inorganic salts and alkaline phosphatase after jaw fractures].
abstract: OBJECTIVE
  To study the changes of serum salts and alkaline phosphatase in patients with jaw fractures and its roles.
  
  
  METHODS
  The serum salts and alkaline phosphatase were determined in 40 cases of jaw fracture and 14 health persons.
  
  
  RESULTS
  The results showed that there was no significant difference in Na(+), K(+), Cl(-), Ca(2+) contents between jaw fracture group and normal group (P>0.05), but P(3-) Mg(2+), ALP levels were higher in jaw fracture group than that in normal group (P<0.05). Furthermore the Ca(2+), P(3-), Mg(2+), ALP were higher in multiple or communition fracture of jaw than in single or double line fracture (P<0.05) except Ca content. The level of Ca(2+) was higher in single jaw fracture than in jaw damage with whole body injury (P>0.05) but the levels of P(3-),Mg(2+), ALP were no difference (P>0.05). As the same all the Ca(2+), P(3-), Mg(2+), ALP levels were higher in early stage of fracture than in 4 weeks after fracture (P<0.05).
  
  
  CONCLUSIONS
  The contents of Ca(2+) P(3-), Mg(2+) ALP were increased after the axilla mandible were fractured and it has an important regulation role in the activity of osteoblast and osteoclast in healing of fractured jaw.
authors.affiliation: Department of Stomatology, Tongji Hospital, Tongji Medical University, Hubei 430030, China.
authors.forename: S R
authors.initials: SR
authors.lastname: Zhu
authors.forename: X L
authors.initials: XL
authors.lastname: Wang
authors.forename: Y L
authors.initials: YL
authors.lastname: Zhang
authors.forename: W
authors.initials: W
authors.lastname: Cai
authors.forename: Y X
authors.initials: YX
authors.lastname: Ji