title: Bone remodeling surrounding primary teeth in skeletally immature dogs.
abstract: OBJECTIVE
  To quantify remodeling in the bone surrounding fully erupted primary teeth and to compare bone remodeling in the primary and permanent dentitions.
  
  
  METHODS
  Two bone sections were obtained bilaterally from the maxilla and mandible of the primary molar region of approximately 5-month-old male beagle dogs. Histomorphometric methods were used to estimate the osteonal remodeling in the alveolar and basal regions of the tooth supporting bone. The following variables were calculated: mineral apposition rate (MAR, µm/d), mineralizing surface/bone surface (MS/BS, %), bone formation rate (BFR, %/y), and erosion surface/bone surface (ES/BS, %). Comparisons were made between jaws (maxilla vs mandible) and bone types (alveolar vs basal), and data analyzed by analysis of variance (ANOVA) and Tukey-Kramer tests. Remodeling (BFR) surrounding primary teeth was compared to existing data from bone surrounding permanent teeth.
  
  
  RESULTS
  The mean and standard deviation BFR values (%/y) were as follows: mandibular alveolar, 44.10 (±26.89); maxillary alveolar, 3.54 (±3.57); mandibular basal, 22.65 (±14.65); and maxillary basal, 12.33 (±7.11). The mandibular BFR was significantly (P < .05) higher than the maxillary bone. The BFR of the alveolar bone of primary teeth was not significantly (P = .48) different from the alveolar bone supporting permanent teeth.
  
  
  CONCLUSIONS
  The remodeling rate of alveolar bone in skeletally immature dogs was greater in the mandible than in the maxilla and remained unaltered between primary and permanent dentitions.
authors.affiliation: Division of Orthodontics, College of Dentistry, The Ohio State University, Columbus, USA.
authors.forename: Letitia E
authors.initials: LE
authors.lastname: Randall
authors.forename: F Michael
authors.initials: FM
authors.lastname: Beck
authors.forename: Sarandeep S
authors.initials: SS
authors.lastname: Huja
mesh_terms: D016301:Alveolar Bone Loss / Q000503:physiopathology; D000539:Alveolar Process / Q000502:physiology*; D000704:Analysis of Variance; D000818:Animals; D016723:Bone Remodeling; D002113:Calcification, Physiologic; D019229:Dentition, Permanent; D004285:Dogs; D008297:Male; D008334:Mandible / Q000502:physiology; D008437:Maxilla / Q000502:physiology; D014094:Tooth, Deciduous