Influência do alendronato de sódio na movimentação dentária induzida em ratas ovariectomizadas

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Histomorfometria do periodonto em estado diabético inicial após movimentação dentária experimental em ratos

Pós-graduação em Odontologia - FOA

Avaliação microscópica da movimentação dentária induzida em dentes traumatizados: um estudo experimental em ratos

Pós-graduação em Odontologia - FOA

Avaliação histopatológica comparativa do periodonto de sustentação de ratos jovens com hipocacemia e hipovitaminose D experimentais, frente ao movimento dentário

Pós-graduação em Odontologia - FOAR

Avaliação histológica e histométrica da terapia fotodinâmica no tratamento da doença periodontal experimental induzida em ratos diabéticos e não diabéticos

Pós-graduação em Odontologia - FOA

Ação do laser em baixa intensidade no tratamento da doença periodontal induzida em ratos diabéticos e não diabéticos: estudo histológico e histométrico. -

Pós-graduação em Odontologia - FOA

Comparação entre o periodontal screening and recording e parâmetros clínicos e radiográficos associados às doenças periodontais

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Avaliação das alterações dos tecidos ao redor de implantes inseridos em diferentes níveis em relação à crista óssea: estudo clínico, radiográfico, e histométrico em cães

Pós-graduação em Odontologia - FOAR

Avaliação morfométrica e estereométrica dos tecidos periodontais de ratos imunossuprimidos por Tracolimus (FK506)

Pós-graduação em Odontologia - FOAR

Platform switching: avaliação biomecânica por meio do método de elementos finitos tridimensional

Pós-graduação em Odontologia - FOA

Evidências da associação entre testosteronas e doença periodontal no sexo masculino

Pós-graduação em Odontologia - FOAR

Papel das proteínas Nod na modulação da resposta imune nas doenças priodontais

Pós-graduação em Odontologia - FOAR

Avaliação histomorfológica da movimentação dentária induzida em ratos com diferentes tipos de força sob ação da terapia a laser em baixa intensidade

Pós-graduação em Odontologia - FOA

Resorption of roots of different dimension induced by different types of forces

Root resorption is a variable to be considered in induced tooth movement (ITM). It is related to root morphology and alveolar bone crest, and also to the types of forces exerted by mechanotherapy. This histometric study evaluated the predominance of root resorption among roots of different dimensions, following ITM with different types of forces and at different time intervals. The study was conducted on 54 rats divided into three groups, according to the type of force: continuous (CF), continuous interrupted (CIF) and intermittent (IF), at periods of 5, 7 and 9 days. The percentage of resorption between mesiobuccal roots of larger dimension and intermediate roots of smaller dimension was assessed. The evaluations were performed on the AxioVision software, and the non-parametric analysis of variance for repeated measures in independent groups was further applied, consisting of a scheme of two factors, and complemented by the Dunn test at a significance level of 5%. The intermediate roots presented a higher percentage of resorption, which was gradual at the periods evaluated for the three types of forces, but mainly for CF. Comparing the intermediate roots with the mesiobuccal roots, there was a statistically significant difference (p < 0.05) in the CF group at day 7 and day 9, and in the FI group, at day 9. The intragroup analysis evidenced a statistically significant difference (p < 0.05) between the 5th and the 9th day for the intermediate root in the CF group. The intergroup analysis did not reveal any statistically significant difference (p > 0.05) in individually analyzed roots.

Influence of ovariectomy combined with lack of masticatory force in the evolution of periodontal disease

AIM: To evaluate the influence of ovariectomy combined with lack of masticatory force in the evolution of periodontal disease induced in rats.METHODS: Forty rats were bilaterally ovariectomized and 40 were submitted to sham ovariectomy. Periodontal disease was induced in the mandibular left first molar and the maxillary left first molar was extracted from half of the rats. The rats were randomly euthanized at 3, 7, 14 and 30 days post periodontal disease induction. Serial sections were obtained from the furcation area and stained for histological and histomorphometric analysis. The results of the histomorphometric analysis were statistically analyzed by ANOVA and Tukey tests.RESULTS: The results demonstrated statistically significant differences in the percentage of bone tissue when the variables presence or absence of estrogen (p=0.020) and time of euthanasia (p=0.002) were evaluated. However, the extraction procedure did not significantly affect the percentage of bone tissue (p=0.598).CONCLUSIONS : The bone loss resulting from periodontal disease is increased by estrogen deficiency and varies according to the time course of periodontitis. In contrast, masticatory force does not seem to interfere in bone loss derived from periodontal disease.