Mouse tooth development time sequence determination for the ICR/Jcl strain

Abstract

To establish the normal dental development pattern of the ICR/Jcl strain of mouse, we analyzed a significant number of observations of the different developmental stages of the first mandibular molar, accurately recording the chronology of their daily embryonic development. Proliferation of the dental sheet began at day 12.5 in utero (E-12.5), the bud stage appeared at days E-13.5 and E-14.5, the cap stage was observed at days E-14.5, E-15.5 and E-16.5 and the early bell stage at day E-17.5. The presence of predentin was observed at day E-18.5 and dentin was observed 1 and 2 days after birth (D-1 and D-2). The late bell stage with presence of enamel was detected more than 3 days after birth. Embryonic and dental development in the ICR/Jcl strain of mouse is faster than in other well-known strains. The establishment of this developmental pattern will be useful for future investigations of transgenic mice. (J. Oral Sci. 46, [135][136][137][138][139][140][141] 2004)

Lipopolysaccharide (LPS) introduction during growth and development period of rat’s tooth toward the occurrence of enamel hypoplasia

“…1 Basically, the growth and the development of rats and human molar indicate the same stage during embrional to eruption stage. 24 Molar amelogenesis on rats has initiated since the age of 20-21 days intrauterine and perfectly formed at the age of 11 days post uterine. 21 LPS induction done on 5 day-old rats resulting the disturbance of amelogenesis or going process.…”

Rapid enamel deposition on Sprague Dawley after nano calcium supplementation during pregnancy

“…14 Enamel deposition on rat will be observed on day 3 after birth during the late bell stage. 15 During the late bell stage, the cells of the internal enamel epithelium will differentiate into enamel-forming cells known as ameloblast. These cells go through a series of life cycle from presecretory, secretory, transition, maturation, and post-maturation stage.…”

Células-tronco mesenquimais: isolamento e caracterização de populações derivadas de alvéolo dental humano e identificação e caracterização de populações de polpas dentais de camundongos

“…O germe começa a se desprender da lâmina dental e ocorrem os primeiros eventos de diferenciação celular e definição da morfologia do germe Sharpe, 2004;Gaete et al, 2004;Zhang et al, 2005;Thesleff;Tummers, 2008Tummers, -2009. O germe dental é facilmente identificado e é constituído de órgão do esmalte, papila dental e folículo dental bem definidos.…”

“…O germe dental é facilmente identificado e é constituído de órgão do esmalte, papila dental e folículo dental bem definidos. O órgão do esmalte é composto de epitélio externo, epitélio interno, retículo estrelado e estrato intermediário, (Gaete et al, 2004;Yen;Sharpe, 2008). A partir de então células da papila dental diferenciam-se em odontoblastos que começam a produzir pré-dentina e dentina (Gaete et al, 2004).…”

“…O órgão do esmalte é composto de epitélio externo, epitélio interno, retículo estrelado e estrato intermediário, (Gaete et al, 2004;Yen;Sharpe, 2008). A partir de então células da papila dental diferenciam-se em odontoblastos que começam a produzir pré-dentina e dentina (Gaete et al, 2004). E as células do órgão do esmalte se diferenciam originando ameloblastos produtores de esmalte.…”