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A microtomographic and histological analysis of the induced orthodontic movement in obese rats

K. C. Horta F. W. G Paula-Silva; M. B. S Stuani; L. L. K Elias; C Flores Mir; D Graf; Alberto Consolaro; M. A. N Matsumoto; Sociedade Brasileira de Pesquisa Odontológica - SBPqO - Virtual Annual Meeting (38. 2021 )

Brazilian Oral Research v. 35, p. 74, res. HA008, 2021. Supplement 3 1807-3107

São Paulo 2021

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  • Título:
    A microtomographic and histological analysis of the induced orthodontic movement in obese rats
  • Autor: K. C. Horta
  • F. W. G Paula-Silva; M. B. S Stuani; L. L. K Elias; C Flores Mir; D Graf; Alberto Consolaro; M. A. N Matsumoto; Sociedade Brasileira de Pesquisa Odontológica - SBPqO - Virtual Annual Meeting (38. 2021 )
  • Assuntos: OBESIDADE; MOVIMENTOS ORTODÔNTICOS; RATOS WISTAR; MICROTOMOGRAFIA
  • É parte de: Brazilian Oral Research v. 35, p. 74, res. HA008, 2021. Supplement 3 1807-3107
  • Notas: Disponível em: https://www.sbpqo.org.br/hotsite2021/bor-v035-SBPqO-book.pdf
  • Notas Locais: MPC Digital
  • Descrição: To evaluate the effect of obesity over induced tooth movement (ITM) through computerized microtomography and histological analyzes in obesity-induced Wistar rats. Forty rats of approximately 125 g were randomly assigned into four groups according to obesity status and ITM duration (mesial movement of the left maxillary first molar for seven and fourteen days). Eighty hemi-maxillas were processed for histological and micro-CT examination. ITM was measured in the micro-CTs. The number of osteoclasts was analyzed through staining of enzyme tartrate-resistant acid phosphatase. Also, the presence or absence of focal hyalinization (FH), frontal bone resorption (FBR), and active root resorption (ARRC) were evaluated in sections stained with Hematoxylin-Eosin. Data were submitted to appropriate statistical analysis using Graph Pad Prism 5.0 and Stata13 (α=0.05) Obese animals showed higher rates of ITM after seven (p=0.037) and fourteen days (p≤0.001) than non-obese animals. A higher quantity of osteoclast was observed after seven days of ITM in obese animals (p=0.043). Low frequencies of FH were observed after seven days of ITM. After seven days of ITM high frequency of FBR and low frequency of ARRC were found in obese animals, while, medium frequencies of FBR and ARRC were seen in non-obese animals. Low and medium frequencies of FBR were observed in nonobese and obese animals respectively after fourteen days of ITM. Obese rats showed significantly higher rates of molar movement and different morphological responses in the surrounding bone and periodontium to ITM.
  • Editor: São Paulo
  • Data de criação/publicação: 2021
  • Formato: p.74, res. HA008.
  • Idioma: Inglês
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  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

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