title: Bilateral sinus graft with either bovine hydroxyapatite or beta tricalcium phosphate, in combination with platelet-rich plasma: a case report.
abstract: BACKGROUND
  Various techniques and many biomaterials are used in maxillary sinus floor augmentations.
  
  
  OBJECTIVE
  To compare 2 different graft materials, bovine hydroxyapatite (BH) and pure phase beta tricalcium phosphate (TCP) associated with platelet-rich plasma (PRP) in one patient referred for bilateral sinus augmentations.
  
  
  METHODS
  Bilateral sinus augmentations were performed with BH mixed with PRP on one side and TCP with PRP on the other side. Biopsies were performed 6 months later and 4 implants were placed.
  
  
  RESULTS
  Wound healing was uneventful after both surgeries and the 4 implants were clinically successful. BH and TCP in combination with PRP led to a satisfactory increase in bone vertical dimension. The histomorphometric analysis showed differences in the number of lacunae and the proportion of fibrous tissue between both materials. Bone tissue showed a lamellar structure and a primary structure in the region grafted with TCP/PRP whereas it was exclusively primary structure on the side of BH/PRP.
  
  
  CONCLUSIONS
  BH and TCP have resulted in bone formation after the sinus lift procedures. Histomorphometric analysis showed some differences but both biomaterials allowed for stable clinical results. They deserve furthermore evaluation and comparison in large controlled studies and long-term histomorphometric examination.
authors.affiliation: Implantology and Periodontology, Paris, France.
authors.forename: Hadi
authors.initials: H
authors.lastname: Antoun
authors.forename: Hassan
authors.initials: H
authors.lastname: Bouk
authors.forename: Ghizlane
authors.initials: G
authors.lastname: Ameur
mesh_terms: D000368:Aged; D000818:Animals; D001706:Biopsy; D001861:Bone Regeneration; D018786:Bone Substitutes; D002130:Calcium Phosphates; D002417:Cattle; D003758:Dental Implantation, Endosseous; D017886:Durapatite; D005260:Female; D006801:Humans; D008443:Maxillary Sinus / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery*; D008903:Minerals; D013516:Oral Surgical Procedures, Preprosthetic / Q000379:methods*; D053657:Platelet-Rich Plasma; D011862:Radiography, Panoramic
chemical_list: C077540:Bio-Oss; D018786:Bone Substitutes; D002130:Calcium Phosphates; D008903:Minerals; C485817:beta-tricalcium phosphate; D017886:Durapatite