ORIGINAL ARTICLE
Year : 2019  |  Volume : 11  |  Issue : 2  |  Page : 79-83

Effects of Vitamin D in Alveolar Bone Remodeling on Osteoblast Numbers and Bone Alkaline Phosphatase Expression in Pregnant Rats During Orthodontic Tooth Movement


Orthodontic Department, Faculty of Dental Medicine, Universitas Airlangga, Surabaya, Indonesia

Correspondence Address:
Ida B Narmada
Jl. Mayjen. Prof. Dr. Moestopo 47, Surabaya
Indonesia
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/jofs.jofs_10_19

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Introduction: The vitamin D effect on orthodontic tooth movement in pregnant women remains unknown. The aim of this study was to investigate the post administration of vitamin D effect on osteoblast numbers and bone alkaline phosphatase (BALP) expression in the tension side in pregnant rats during orthodontic tooth movement. Materials and Methods: This study was an in vivo animal experiment; 28 healthy female Wistar rats (Rattus norvegicus) (16–20 weeks’ old) were divided into four groups, with or without intramuscular administration of vitamin D, which were to be observed after 7 and 14 days. Pregnancy was induced with pregnant mare serum gonadotropin and human chorionic gonadotropin. Nickel–titanium coil springs with 30 g/mm2 of force were connected between the right maxillary incisors and the right maxillary first molar. After 7 and 14 days, the animals were sacrificed. Statistical Analysis Used: Analysis of variance with post hoc test (P < 0.05) was performed based on the results of a Levene’s test and a Kolmogorov–Smirnov test (P > 0.05). Results: The highest number of osteoblasts occurred in the C-7 group with mean ± standard deviation of 20.54 ± 8.4. Statistically significant differences were seen in decreased osteoblast number between groups (P = 0.001, P < 0.05). The highest BALP expression was in the E-7 group (3.40 ± 1.625). Nevertheless, no statistically significant difference was observed between the groups (P = 0.240, P > 0.05) in the expression of BALP. Conclusion: The post administration of vitamin D during orthodontic tooth movement in pregnant rats produced no significant enhancement on BALP expression and osteoblast number.


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