title: [Experimental study on effect of capping pulp with collagen].
abstract: OBJECTIVE
  To investigate the function of collagen on reparative dentin formation, collagen was used as capping pulp material in the teeth of minipigs.
  
  
  METHODS
  The histopathologic examinations and ultrastructures were observed after capping for 2 weeks, 4 weeks and 13 weeks.
  
  
  RESULTS
  After 2 weeks, the reparative dental masses were formed and the stellative cells appeared. After 4 weeks, the reparative dental bridges were formed and the degenerative cells appeared in matrix. After 13 weeks, the complete, think and dense dental bridges were observed.
  
  
  CONCLUSIONS
  It is suggested that capping with collagen can promote formation of reparative dentine without stimulation to the pulp and that collagen can be used for capping.
authors.affiliation: Institute of Stomatology, Beijing Hospital for Stomatology, Capital University of Medical Sciences, Beijing 100050, China.
authors.forename: X
authors.initials: X
authors.lastname: Liu
authors.forename: Y
authors.initials: Y
authors.lastname: Li
authors.forename: B
authors.initials: B
authors.lastname: Zhao
mesh_terms: D000818:Animals; D003094:Collagen / Q000494:pharmacology*; D003782:Dental Pulp / Q000166:cytology / Q000648:ultrastructure; D003785:Dental Pulp Capping; D008854:Microscopy, Electron; D013552:Swine
chemical_list: D003094:Collagen