Relationship Between Cell Proliferation and Eruption Rate in the Rat Incisor

  title={Relationship Between Cell Proliferation and Eruption Rate in the Rat Incisor},
  author={Jos{\'e} Rosa Gomes and N{\'a}dia Fayez Omar and E.R. Do Carmo and Juliana Dos Santos Neves and Maria Albertina de M Soares and Eliene Aparecida Orsini Narvaes and Pedro Duarte Novaes},
  journal={The Anatomical Record},
The aim of this study was to further define the relationship between cell proliferation and the rate of tooth eruption in the rat incisor. Vinblastine is a drug that blocks cellular mitosis and was used to inhibit cell proliferation in the odontogenic region of rat incisors that were submitted to a shortening treatment or to higher masticatory forces. Male Wistar rats were divided into five groups: normofunctional (control group for incisor eruption), hypofunctional (incisor submitted to… 

Evaluation of tooth eruption rate of incisor teeth in rats with estrogen deficiency

Estrogen deficiency decreases TER in teeth under impeded condition and increases ERβ gene expression in the odontogenic region of teeth with continuous formation, and quantitative real-time PCR was performed.

Adaptive amelogenesis during unimpeded eruption of rat mandibular incisor

The measured length of the secretion zone is in agreement with the observed thickness of enamel (98 µm) in unimpeded incisors, and the reduced eruption rate and the apical shift of the contralateral incisor are probably due to an increased occlusal load.

Effects of loss of occlusal contact on the expression of matrix metalloproteinase‐2, membrane type 1‐MMP, tissue inhibitor of the MMP‐2, eruption rate, organization and resistance of collagen fibers of the rat incisor periodontal ligament

It is concluded that, after incisor eruption, occlusal contact may be an important factor for regulating the remodeling and the physiological resistance of the periodontal ligament against the continuous eruption process observed in rat incisors.

4-Hexylresorcinol Administration Increases Dental Hard Tissue Formation and Incisor Eruption Rate in Rats

Collectively, 4HR administration increased the expression of markers related to dental hard tissue formation and accelerated the eruption rate of incisors in rats.

Doxycycline reduces the expression and activity of matrix metalloproteinase‐2 in the periodontal ligament of the rat incisor without altering the eruption process

The inhibition of M MP-2 by doxycycline, during incisor shortening, was not enough to alter the eruption rate, which suggests that MMP-2 may have an important role in the turnover of extracellular matrix of the periodontal ligament during the tooth-eruption process.

Tusks, the extra-oral teeth.

Histological evidence for a dynamic dental battery in hadrosaurid dinosaurs

The first histological study of an entire hadrosaurid dental battery provides a comprehensive look at tooth movement within this complex structure, underscoring the dynamic nature of one of the most unique and complex dental systems in vertebrate history.

Bisphenol A Exposure Disrupts Enamel Formation via EZH2-Mediated H3K27me3

The results demonstrate the essential role of repressive histone modification H3K27me3 in DDE elicited by exposure to an endocrine-disrupting chemical.

Estudo morfológico do efeito do trauma mecânico sobre a amelogênese em incisivos de ratos

 Introdução: A amelogênese compreende a formação do esmalte por células especializadas denominadas ameloblastos. Os ameloblastos secretam proteínas da matriz e são responsáveis pela criação de um



The effect of cortisone on the eruption rate of root-resected incisors in the rat.

  • C. TengF. J. SobkowskiL. Johnston
  • Medicine
    American journal of orthodontics and dentofacial orthopedics : official publication of the American Association of Orthodontists, its constituent societies, and the American Board of Orthodontics
  • 1989

Cellular proliferation in the tooth germ of the rat incisor.

  • M. Chiba
  • Medicine
    Archives of oral biology
  • 1965

Changes in mitotic activity in the basal proliferative tissues after experimental shortening of the rat incisor.

MT1-MMP expression in the odontogenic region of rat incisors undergoing interrupted eruption

Results indicate that MT1-MMP may have an important role in the process of dental eruption, and was widespread in the dental follicle, in both groups studied (normal and interrupted eruption groups); however a significant decrease in immunostaining was observed in the interrupted eruption group.

Localized damage to the periodontal ligament and its effect on the eruptive process of the rat incisor.

It is demonstrated that isolated damage to the PDL retards tooth eruption, supporting the hypothesis which views thePDL as the prime motor pulling the erupting incisor outward.

Ultrastructural Aspects And Frequency Of Ciliated Fibroblasts In The Periodontal Ligament Of Incisor Tooth Of Rats Submitted To Different Eruption Conditions

The relationship between ciliated fibroblast found in the periodontal ligament of rodent incisor teeth and eruption rate was studied under different eruption conditions, using an estimation of

Role of Attrition and Occlusal Contact in the Physiology of the Rat Incisor: X. The Part Played by the Periodontal Ligament in the Eruptive Process

Removal of the proliferating base of the rat incisor did not influence the rate of eruption which responded to changes in impediment to eruption in a fashion similar to that for control teeth. It is

Lathyrogens and the role of collagen in the eruption of rat incisors.