title: Surgical elevation of bilateral maxillary sinus floor with a combination of autogenous bone and lyophilized bovine bone.
abstract: OBJECTIVE
  Realize the surgery of sinus lifting floor to allow the installation of osseointegrated implants for oral rehabilitation, with the combination of different biomaterials, autogenous bone and lyophilized bovine bone.
  
  
  BACKGROUND
  Oral rehabilitation using the installation of osseointegrated implants is an alternative surgical approach that results in the satisfactory form, function and esthetics of the dental units.
  
  
  METHODS
  After clinical, dental and laboratory assessment, a 47-year-old female patient underwent full maxillary oral rehabilitation involving the installation of osseointegrated implants to allow her to meet the physiological demands of occlusion and mastication. It was found that the patient had fully pneumatized maxillary sinuses with insufficient height to anchor implants, with a loss of the vertical dimension of the occlusal and masticatory functions due to general dental loss, compounded by the use of ill-fitting dentures; hence, the choice was made to take autogenous bone from the patient's chin area and supplement it with lyophilized bovine bone as collateral for larger areas to be grafted. It was also decided to avulse the remaining tooth units due to their impairment by periodontal disease.
  
  
  CONCLUSIONS
  Bone grafts do not constitute suitable alternatives in the cosmetic and functional rehabilitation of the maxilla in patients requiring bilateral sinus elevation. The chin region provides bone tissue that, when complemented by lyophilized bovine bone grafts, ensures greater volume and less invasive surgery. In the case described here, a height gain of approximately 550% was obtained, making it possible to anchor seven implants.
  
  
  CONCLUSIONS
  In this study, the surgical procedures used for grafting a combination of autogenous and lyophilized bovine bone, aimed to elevate the maxillary sinus floor to allow the installation of osseointegrated implants for oral rehabilitation.
authors.affiliation: Professor, Department of Biofunction, Federal University of Bahia Bahia, Brazil, e-mail: danilobarral81@hotmail.com.
authors.forename: Danilo Barral
authors.initials: DB
authors.lastname: Araujo
authors.forename: Elisângela
authors.initials: E
authors.lastname: de Jesus Campos
authors.forename: Marcos André Matos
authors.initials: MA
authors.lastname: Oliveira
authors.forename: Max José Pimenta
authors.initials: MJ
authors.lastname: Lima
authors.forename: Gabriela Botelho
authors.initials: GB
authors.lastname: Martins
authors.forename: Roberto Paulo Correia
authors.initials: RP
authors.lastname: Araujo
mesh_terms: D000818:Animals; D064592:Autografts / Q000637:transplantation*; D016025:Bone Transplantation / Q000379:methods*; D002417:Cattle; D003758:Dental Implantation, Endosseous / Q000379:methods; D015921:Dental Implants; D005260:Female; D064593:Heterografts / Q000637:transplantation*; D006801:Humans; D008437:Maxilla / Q000601:surgery; D008875:Middle Aged; D016348:Osseointegration / Q000502:physiology; D010347:Patient Care Planning; D059546:Sinus Floor Augmentation / Q000379:methods*
chemical_list: D015921:Dental Implants