Abstract:
Background: Orthodontic force would inhibit periodontal ligament vascularization and blood flow, causing biochemical and cellular changes as well as changes in the contour of the alveolar bone. HBO is beneficial because it stimulates the growth of new blood vessels and result in a substantial increase in tissue oxygenation. Purpose: To determine the effects of Hyperbaric Oxygen (HBO) 7 and 10 days in increase of osteoblastic activity on bone remodelling during orthodontic tooth movement. Materials
and Methods: This study was conducted using a post test only control group design program. Thirty two male adult Cavia cobaya were randomly divided into four groups. Negative group (n=8), positive group (n=8), HBO 7 days was administered in first group (n=8), and HBO 10 days was administered in second group (n=8). The maxillary incisors were moved distally by means of elastic separator in third groups (Positive, HBO 7 and HBO 10 days). Data on the number of cells were analyzed by One-way ANOVA and LSD statistical test. Result: The data show that the number of cells increased in all
treatment groups. The highest cell counts began in the group treated with HBO 7 days (14.571) and the group treated with HBO 10 days (18.166). However, there is no mean between the number of osteoblasts HBO 7 days and HBO 10 days (p 0.559). Conclusion: HBO therapy 7 days effective to increase of osteoblast number on bone remodelling during orthodontic tooth movement.
