title: Three-dimensional evaluation of bone changes following ridge preservation procedures.
abstract: OBJECTIVE
  To evaluate three-dimensionally the bone change following ridge preservation procedures (RPP) using computed tomography (CT).
  
  
  METHODS
  Subjects in need of implant therapy were enrolled in the study. The teeth were extracted, and sockets underwent RPP with a bioactive glass (Inion BioRestore, Inion Oy). The patients were scanned with CT within 1 week and 3 months after surgery. Horizontal and vertical radiographic measurements were performed on superimposed CT scans to evaluate bone changes in the alveolar sites during the 3-month period.
  
  
  RESULTS
  Thirteen subjects participated, and 32 teeth were extracted and treated with grafting. Alveolar sites treated with RPP demonstrated a preservation of about 77% of the original width dimensions, with a mean loss of 1.8 ± 1.1 mm in width. Moreover, it was observed that the vertical loss of buccal bone was 2.7 ± 1.1 mm, while the loss of lingual bone was 1.9 ± 1.2 mm.
  
  
  CONCLUSIONS
  The CT evaluation was helpful to assess that the bone loss in width was less than the vertical bone loss of both walls 3 months after RPP.
authors: Ashman Department of Periodontology and Implant Dentistry, New York University College of Dentistry, New York, New York, USA. leleclo@libero.it
authors: Emanuele
authors: E
authors: Clozza
authors: Matteo
authors: M
authors: Biasotto
authors: Fabio
authors: F
authors: Cavalli
authors: Loredana
authors: L
authors: Moimas
authors: Roberto
authors: R
authors: Di Lenarda
mesh_terms: D000328:Adult; D000368:Aged; D016301:Alveolar Bone Loss / Q000000981:diagnostic imaging* / Q000209:etiology / Q000517:prevention & control; D000539:Alveolar Process / Q000033:anatomy & histology / Q000000981:diagnostic imaging* / Q000601:surgery; D018786:Bone Substitutes / Q000008:administration & dosage*; D005260:Female; D005898:Glass; D006801:Humans; D021621:Imaging, Three-Dimensional / Q000379:methods*; D008297:Male; D008875:Middle Aged; D011862:Radiography, Panoramic; D054457:Tissue Scaffolds / Q000737:chemistry; D014057:Tomography, X-Ray Computed / Q000379:methods*; D014081:Tooth Extraction / Q000009:adverse effects; D020390:Tooth Socket / Q000033:anatomy & histology / Q000000981:diagnostic imaging*
chemical_list: D018786:Bone Substitutes