The Periodontium of the Enamel Aspect of the Rat Incisor

Matĕna, V

doi:10.1902/jop.1972.43.5.311

Cited by 17 publications

(7 citation statements)

References 10 publications

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“…The labial PDL bordering enamel performs mainly the task of a stress-absorbing cushion, which protects and provides nourishment to the functioning enamel organ (Matena, 1972).…”

Section: Discussionmentioning

confidence: 99%

A Three-dimensional Evaluation of the Effects of Functional Occlusal Forces on the Morphology of Dental and Periodontal Tissues of the Rat Incisor

et al. 1989

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We examined the effect of function on tooth and periodontal ligament (PDL) morphology in 40 lower incisors of adult female rats. Ten teeth were exposed to occlusal hyperfunction for three months, ten to hypofunction for three weeks, ten to hypofunction for three months, while ten teeth in normal occlusion served as control. Transverse ground sections were cut at various levels perpendicular to the tooth long axis, and their distances from the apex were calculated. The outlines of the tissues were traced and fed into a computer. We plotted the measurements according to their location and fitted them by second-order polynomials. We calculated tissue volume for the proximal 18 mm of bone-embedded tooth. Hyperfunction affected tooth shape, in that it became more rounded. The volumes of the dental tissues remained unchanged, while width and volume of the cementum-bordering PDL increased. Hypofunction did not alter tooth shape, but influenced its size: After three weeks, tooth circumference decreased, and after three months, it expanded. Dentin width was reduced, with concomitant increase of pulp size. The amount of enamel diminished initially, but after three months returned to normal values. The PDL bordering enamel expanded proportionally to the duration of hypofunction. The changes in socket size reflected the total dimensional variations in the tooth and its PDL. The results demonstrate that the shape and size of growing teeth and their periodontium are influenced by functional occlusal forces.

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“…The labial PDL bordering enamel performs mainly the task of a stress-absorbing cushion, which protects and provides nourishment to the functioning enamel organ (Matena, 1972).…”

Section: Discussionmentioning

confidence: 99%

A Three-dimensional Evaluation of the Effects of Functional Occlusal Forces on the Morphology of Dental and Periodontal Tissues of the Rat Incisor

et al. 1989

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“…However, the rodent incisor differs from most other mammalian teeth in its continuous growth and eruption and in the distribution of enamel and periodontal ligatnent on its surface (Matena 1972(Matena , 1973. These factors, combined with the c 1980 Munk.sgaard, Copenhagen demonstration (Gowgiel 1961) that teeth without roots, and therefore without a periodontal ligament, do erupt cause one to question the role of the periodontal ligament in eruption of most teeth.…”

mentioning

confidence: 99%

Tooth eruption: evidence for the central role of the dental follicle

Cahill

Marks

1980

J Oral Pathology Medicine

307

168

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The roles of the gubernaculum dentis, root formation, tooth crown and dental follicle in pre‐functional eruption of a mandibular premolar have been studied in nine beagle dogs by radiographic and histologic evaluations of the effects of surgical ablation or removal of these structures on tooth eruption. The dental follicle was the only one of these structures required for the coordinated enlargement of the eruption pathway and formation of bone in the base of the bony crypt, the radiographic and histologic hallmarks of tooth eruption. These data, together with the topographic relationships of the dental follicle to areas of localized bone resorption and formation, are interpreted to mean that the dental follicle may influence, if not coordinate, these processes in tooth eruption.

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“…Os incisivos inferiores foram selecionados devido a capacidade de erupção mais acelerada quando comparados aos incisivos superiores (Matěna, 1972;Treuting, Dintziz, Montine, 2018). Além disso, houve uma melhor relação de paralelismo da coroa clínica em relação a lente do estereomicroscópio (Treuting, Dintziz, Montine, 2018).…”

Section: Discussão |98unclassified

“…Assim, em um corte transversal da porção final da região odontogênica por exemplo, todas as estruturas que compõem a odontogênese se fazem presentes (Matěna, 1972). Em nosso trabalho, propôs-se realizar cortes histológicos em diversos seguimentos da região odontogênica com objetivo de identificar tecidos e posteriormente, simplificar a análise imunohistoquímica dos ERs.…”

Section: Região Odontogênica De Dentes Com Crescimento Contínuo -Inci...unclassified

Influência da deficiência de estrógeno na taxa de erupção dentária em modelo murino

Madalena¹

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AGRADECIMENTOSÀ Deus, por sua infinita bondade e misericórdia. Me abençoou com uma família maravilhosa, amigos encantadores, saúde e perseverança para lutar por meus ideais.Agradeço por guiar e iluminar meus caminhos. Serei infinitamente grata por me fazer especial em meio à multidão. Aos meus paisPaulo e Maria Lúcia, minhas fontes de inspiração! De todos os amores que podemos receber durante a vida, o amor dos nossos pais é o mais especial. Não existe outro que consiga ser tão completo e demonstrar ao mesmo tempo, um interesse tão grande e genuíno na nossa felicidade. Agradeço por vocês existirem em minha vida, por serem o que são, pelo carinho e dedicação em todos esses anos. Agradeço por me ensinarem a sentir paixão pela vida. Sou muito feliz porque aprendi a ser feliz com vocês.A minha irmã Isabela Cristina (Tininha), pela relação ímpar que tivemos ao longo de todos esses anos. Eu costumo dizer que ela é a minha metade, é aquilo que me completa, parece que ela nasceu só para me fazer descobrir como é bom ter uma pessoa ao seu lado para compartilhar aquilo que você não é capaz de suportar sozinho.Muito obrigada pelo companheirismo e cumplicidade de sempre! À minha família, em especial as minhas primas Iara, Fernanda e Cecília. É reconfortante saber que existem muitos ouvidos dispostos a escutar nossos problemas, muitas bocas prontas a desvendar conselhos e abraços que acalentam em momentos tortuosos.

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The Periodontium of the Enamel Aspect of the Rat Incisor

Cited by 17 publications

References 10 publications

A Three-dimensional Evaluation of the Effects of Functional Occlusal Forces on the Morphology of Dental and Periodontal Tissues of the Rat Incisor

A Three-dimensional Evaluation of the Effects of Functional Occlusal Forces on the Morphology of Dental and Periodontal Tissues of the Rat Incisor

Tooth eruption: evidence for the central role of the dental follicle

Influência da deficiência de estrógeno na taxa de erupção dentária em modelo murino

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