title: Buccal bone crest dynamics after immediate implant placement and ridge preservation techniques: review of morphometric studies in animals.
abstract: OBJECTIVE
  To review morphometric studies performed in animals assessing the dynamics of the buccal bone crest after immediate implant placement and ridge preservation techniques.
  
  
  METHODS
  A bibliographic search in PubMed was performed. Studies that analyzed morphometrically in animals the buccal bone crest dynamics after immediate implant placement or ridge preservation techniques were included. Twenty-five studies met the inclusion criteria.
  
  
  RESULTS
  Immediate implant placement does not prevent the resorption of the buccal bone crest. To minimize this resorption, 2 mm width of the buccal bone crest, palatal/lingual implant placement, and an adequate implant diameter for the width of the ridge are required. The regeneration of the gap after immediate implant placement limits the resorption of the buccal bone crest. Flap elevation and implant surface showed no relation with this resorption. Ridge preservation techniques associated with mucogingival surgery minimize buccal bone crest resorption. Biomaterials are more effective than autograft.
  
  
  CONCLUSIONS
  Immediate implant placement does not prevent the resorption of the buccal bone crest after dental extraction. Ridge preservation techniques minimize this resorption.
authors: Valencia University Medical and Dental School, Valencia, Spain.
authors: Jose
authors: J
authors: Viña-Almunia
authors: Maria E
authors: ME
authors: Candel-Martí
authors: Juan
authors: J
authors: Cervera-Ballester
authors: Berta
authors: B
authors: García-Mira
authors: Jose L
authors: JL
authors: Calvo-Guirado
authors: David
authors: D
authors: Peñarrocha-Oltra
authors: Miguel
authors: M
authors: Peñarrocha-Diago
mesh_terms: D016301:Alveolar Bone Loss / Q000209:etiology; D000539:Alveolar Process / Q000473:pathology*; D000540:Alveolar Ridge Augmentation / Q000379:methods*; D000818:Animals; D001861:Bone Regeneration / Q000502:physiology; D003758:Dental Implantation, Endosseous / Q000379:methods*; D015921:Dental Implants; D017267:Dental Prosthesis Design; D020390:Tooth Socket / Q000601:surgery
chemical_list: D015921:Dental Implants