title: [Orbital rim reconstruction with coral porous hydroxyapatite].
abstract: OBJECTIVE
  To search for the effect and safety of coral porous hydroxyapatite (CHA) implanted material in orbital rim reconstruction.
  
  
  METHODS
  7 cases of orbital rim reconstruction were treated with CHA which is a plate form mass with an interconnected system of canals of approximately 200 microns in size. It has three types: 1.0 cm x 1.5 cm x 5.0 cm, 0.6 cm x 1.5 cm x 5.0 cm and 0.4 cm x 1.5 cm x 5.0 cm. According to the shape of a contralateral healthy orbit, a rubber putty model was made before the operation. An incision was designed at the upper 1/3 of the face for the elimination of wrinkles or a prolonged incision of lower lid bag plastic surgery was made. After the exposure of the defective part of the orbit, a correctly molded CHA tamponade was inserted.
  
  
  RESULTS
  The orbital rim reconstruction in 7 cases with orbital defect was successfully treated with CHA. During a follow-up of 3-12 months (average 6.6 months), there was no extrusion or migration of implant. CONCLUSION CHA is a good material for substitution of bone graft and is much better than autogenous tissue of other artificial materials.
authors.affiliation: Department of Ophthalmology, Beijing Tongren Hospital.
authors.forename: D
authors.initials: D
authors.lastname: Li
authors.forename: J
authors.initials: J
authors.lastname: Liu
authors.forename: Y
authors.initials: Y
authors.lastname: Min
mesh_terms: D000328:Adult; D001672:Biocompatible Materials / Q000627:therapeutic use*; D018786:Bone Substitutes / Q000627:therapeutic use*; D017886:Durapatite / Q000627:therapeutic use*; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D009917:Orbital Fractures / Q000601:surgery*; D019651:Plastic Surgery Procedures / Q000379:methods*
chemical_list: D001672:Biocompatible Materials; D018786:Bone Substitutes; D017886:Durapatite