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Analysis of the dentin-pulp complex in teeth submitted to orthodontic movement in rats
Massaro, Camila da Siveira; Consolaro, Renata Bianco; Santamaria Junior, Milton; Consolaro, Maria Fernanda Martins-Ortiz; Consolaro, Alberto.
  • Massaro, Camila da Siveira; s.af
  • Consolaro, Renata Bianco; s.af
  • Santamaria Junior, Milton; s.af
  • Consolaro, Maria Fernanda Martins-Ortiz; University of Sacred Heart. Bauru. BR
  • Consolaro, Alberto; University of São Paulo. Bauru School of Dentistry. Department of Stomatology. BR
J. appl. oral sci ; 17(spe): 35-42, 2009. ilus, tab
Artigo em Inglês | LILACS | ID: lil-576875
ABSTRACT
In order to microscopically analyze the pulpal effects of orthodontic movement, 49 maxillary first molars of rats were submitted to orthodontic appliance composed of a closed coil spring anchored to the maxillary incisors, placed for the achievement of mesial movement. MATERIAL AND

METHODS:

Ten animals were used as the control group and were not submitted to orthodontic force; the other animals were divided into groups according to the study period of tooth movement, namely 1, 2, 3, 4, 5, 6 and 7 days. The investigation of pulp and periodontal changes included hyalinization, fibrosis, reactive dentin and vascular congestion. Statistical evaluation was performed between control and experimental groups and between periods of observation using non-parametric chi-square, Kruskal-Wallis and Dunn tests.

RESULTS:

There was no statistically significant difference concerning pulpal changes between control and experimental groups nor between periods of observation. The control group, at 3 and 5 days, revealed greater hyalinization of the periodontal ligament (p<0.05), whereas root resorption was significantly greater at 5 and 7 days (p<0.05).

CONCLUSION:

No morphological change from the effect of induced tooth movement could be found in the dentin-pulp complex. In addition, no inflammatory or pulp degeneration, detectable in optical microscopy, was found in experimental groups.
Assuntos


Texto completo: DisponíveL Índice: LILACS (Américas) Assunto principal: Aparelhos Ortodônticos / Técnicas de Movimentação Dentária / Polpa Dentária / Dentina Tipo de estudo: Estudo de etiologia / Estudo prognóstico Limite: Animais Idioma: Inglês Revista: J. appl. oral sci Assunto da revista: Odontologia Ano de publicação: 2009 Tipo de documento: Artigo País de afiliação: Brasil Instituição/País de afiliação: University of Sacred Heart/BR / University of São Paulo/BR

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Texto completo: DisponíveL Índice: LILACS (Américas) Assunto principal: Aparelhos Ortodônticos / Técnicas de Movimentação Dentária / Polpa Dentária / Dentina Tipo de estudo: Estudo de etiologia / Estudo prognóstico Limite: Animais Idioma: Inglês Revista: J. appl. oral sci Assunto da revista: Odontologia Ano de publicação: 2009 Tipo de documento: Artigo País de afiliação: Brasil Instituição/País de afiliação: University of Sacred Heart/BR / University of São Paulo/BR