Abstract
BackgroundOrthodontic tooth movement is mediated by the inflammation process. Inflammation induces pain and increases the level of cortisol hormone as it triggers stress. The aim of this research was to observe the effects of vitamin E (VE) supplementation in reducing stress levels from orthodontic force in Wistar rats (Rattus norvegicus). MethodsWistar rats (n = 56) were divided into two groups: group 1 as the control group, and group 2 as the experimental group (VE group). VE supplemented for 14 days prior application of the separator as an orthodontic force. Each group was divided into four subgroups (n = 7), corresponding to the duration in days that force was applied, i.e., 0, 1, 3, and 7 days. Stress were measured by cortisol levels, and inflammation were measured by interleukin-1 beta (IL-1β) levels in blood plasma. ResultsThe VE group had lower cortisol levels than the control group, and significant found on days 3 and 7 (p = 0.026 and p = 0.037). The cortisol level in the VE group decreased faster, beginning on day 1, whilst the control group occurred on day 3. Statistical analysis of IL-1β levels found insignificant differences between the two groups. ConclusionVitamin E helps reduce stress caused by orthodontic force due to tooth movement.
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