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:: Volume 28, Issue 3 (7-2016) ::
J Iran Dent Assoc 2016, 28(3): 86-91 Back to browse issues page
Effect of Ovariectomy on Orthodontic Tooth Movement in Rats
Mohammad Amin Mackie1 , Shahla Momeni Danaei2 , Salma Habibagahi3 , Nader Tanide4 , Ali Dehghani Najvani5 , Mostafa Montazeri * 6
1- Postgraduate Student, Department of Orthodontics, School of Dentistry, Isfahan (Khorasgan) Branch, Isfahan, Iran
2- Professor, Department of Orthodontics, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran
3- Postgraduate Student, Department of Operative Dentistry, School of Dentistry, Isfahan (Khorasgan) Branch, Islamic Azad University, Isfahan, Iran
4- Associate Professor, Department of Pharmacology, School of Pharmacology, Shiraz University of Medical Sciences, Shiraz, Iran
5- Assistant Professor, Department of Oral and Maxillofacial Pathology, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran
6- Postgraduate Student, Department of Periodontics, School of Dentistry, Tehran Branch, Islamic Azad University, Tehran, Iran , mosimont@gmail.com
Abstract:   (3116 Views)
Background and Aim: Estrogen affects the metabolism in females. This study aimed to assess the effect of absence of estrogen on orthodontic tooth movement in rats.
Materials and Methods: In this animal study, 55 rats were randomly divided into four groups. Group 1 (n=10) had intact ovaries. In group 2 (n=15), ovaries were intact but the rats were subjected to stress due to tooth preparation. In group 3 (n=15), the ovaries were intact but the rats were subjected to stress due to tooth preparation and surgical manipulation. In group 4 (n=15), ovaries were removed and the rats were subjected to stress due to tooth preparation and surgical manipulation. Orthodontic appliances were placed after 14 days in groups 2 to 4. All groups except for group 1 were subjected to mesial movement of maxillary right first molar using NiTi closed coil spring applying 60g load for 21 days. The rats were sacrificed at 21 days and the amount of orthodontic tooth movement was measured using a feeler gauge. Data were analyzed using ANOVA.
Results: The mean orthodontic tooth movement was 1.18±0.2 mm in group 4, which was significantly greater than that in group 3 (0.47±0.18 mm) and group 2 (0.22±0.07 mm) (P<0.001).
Conclusion: Absence of estrogen can significantly accelerate orthodontic tooth movement in rats.
 
Keywords: Tooth Movement Techniques, Gonadal Steroid Hormones, Rats
Full-Text [PDF 348 kb]   (1344 Downloads)    
Type of Study: Original | Subject: Orthodontics
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Mackie M A, Momeni Danaei S, Habibagahi S, Tanide N, Dehghani Najvani A, Montazeri M. Effect of Ovariectomy on Orthodontic Tooth Movement in Rats. J Iran Dent Assoc 2016; 28 (3) :86-91
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Volume 28, Issue 3 (7-2016) Back to browse issues page
Journal of Iranian Dental Association

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