title: Measuring bone density in healing periapical lesions by using cone beam computed tomography: a clinical investigation.
abstract: BACKGROUND
  Differences in bone density before and after endodontic treatment were examined in teeth with periapical lesions in Hounsfield units (HUs) by using cone beam computed tomography (CBCT).
  
  
  METHODS
  Sixteen patients requiring endodontic treatment for periapical lesions underwent CBCT scan before and after treatment. Their bone densities were calculated in HUs. The study included 16 lesions measuring 8-10 mm in diameter. HU measurements were taken from an area of 2.25 mm(2) on the CBCT images where the bone density was lowest, before and after treatment.
  
  
  RESULTS
  The initial and final measurements were compared statistically by using paired samples statistics at the 5% significance level.
  
  
  CONCLUSIONS
  The results of this study support the use of CBCT to measure bone density before and after endodontic treatment.
authors.affiliation: Dental Faculty, Department of Endodontics, Diyarbakir, Turkey. sadullahkaya@hotmail.com
authors.forename: Sadullah
authors.initials: S
authors.lastname: Kaya
authors.forename: Izzet
authors.initials: I
authors.lastname: Yavuz
authors.forename: Ibrahim
authors.initials: I
authors.lastname: Uysal
authors.forename: Zeki
authors.initials: Z
authors.lastname: Akkuş
mesh_terms: D000293:Adolescent; D000328:Adult; D016301:Alveolar Bone Loss / Q000000981:diagnostic imaging / Q000628:therapy; D000539:Alveolar Process / Q000000981:diagnostic imaging; D015519:Bone Density / Q000502:physiology*; D001861:Bone Regeneration / Q000502:physiology; D002126:Calcium Hydroxide / Q000627:therapeutic use; D054893:Cone-Beam Computed Tomography / Q000379:methods*; D003481:Cuspid / Q000000981:diagnostic imaging; D005500:Follow-Up Studies; D006171:Gutta-Percha / Q000627:therapeutic use; D006801:Humans; D007180:Incisor / Q000000981:diagnostic imaging; D008437:Maxilla / Q000000981:diagnostic imaging; D010483:Periapical Diseases / Q000000981:diagnostic imaging / Q000628:therapy*; D012387:Root Canal Filling Materials / Q000627:therapeutic use; D018915:Root Canal Preparation / Q000379:methods; D012390:Root Canal Therapy / Q000379:methods*; D012459:Salicylates / Q000627:therapeutic use; D014945:Wound Healing / Q000502:physiology; D055815:Young Adult
chemical_list: D012387:Root Canal Filling Materials; D012459:Salicylates; C055601:Sealapex; D006171:Gutta-Percha; D002126:Calcium Hydroxide