The dental lamina is a band of epithelial tissue seen in histologic sections of a developing tooth. The dental lamina is first evidence of tooth development and begins (in humans) at the sixth week in utero or three weeks after the rupture of the buccopharyngeal membrane. It is formed when cells of the oral ectoderm proliferate faster than cells of other areas. Best described as an in-growth of oral ectoderm, the dental lamina is frequently distinguished from the vestibular lamina, which develops concurrently. This dividing tissue is surrounded by and, some would argue, stimulated by ectomesenchymal growth. When it is present, the dental lamina connects the developing tooth bud to the epithelium of the oral cavity. Eventually, the dental lamina disintegrates into small clusters of epitheli
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| - Dental lamina (en)
- Lamina dentalis (nl)
- Lâmina dentária (pt)
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| - A lâmina dentária é uma banda de tecido epitelial visto em secções histológicas no desenvolvimento de um dente. A lâmina dental é primeira evidência de dente e começa a se desenvolver na sexta semana no útero ou três semanas após a ruptura da membrana bucofaringeal. É formado nas células do ectoderma oral e se proliferam mais rapidamente do que células de outras áreas. Eventualmente, a lâmina dentária desintegra-se em pequenos aglomerados de epitélio e é reabsorvido. Nas situações em que os não são reabsorvidos, cistos são formadas ao longo do desenvolvimento dente e retardam a sua erupção na cavidade bucal. (pt)
- The dental lamina is a band of epithelial tissue seen in histologic sections of a developing tooth. The dental lamina is first evidence of tooth development and begins (in humans) at the sixth week in utero or three weeks after the rupture of the buccopharyngeal membrane. It is formed when cells of the oral ectoderm proliferate faster than cells of other areas. Best described as an in-growth of oral ectoderm, the dental lamina is frequently distinguished from the vestibular lamina, which develops concurrently. This dividing tissue is surrounded by and, some would argue, stimulated by ectomesenchymal growth. When it is present, the dental lamina connects the developing tooth bud to the epithelium of the oral cavity. Eventually, the dental lamina disintegrates into small clusters of epitheli (en)
- De lamina dentalis is een band van epitheelweefsel dat voorkomt in histologische secties van een zich ontwikkelende tand. De tandheelkundige lamina is een eerste aanwijzing van tandontwikkeling en begint bij de zesde week of drie weken na de breuk van de . Het wordt gevormd wanneer cellen van het orale ectoderm zich sneller ontwikkelen dan de andere cellen, met deze ingroei van het orale ectoderm wordt de lamina dentalis vaak onderscheiden van de die zich gelijktijdig ontwikkelt. Dit aparte weefsel is omgeven door en wordt, volgens sommigen, gestimuleerd door groei. (nl)
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| - Dental lamina (en)
- lamina dentalis (en)
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| - Micrograph of a dental lamina and tooth bud. H&E stain. (en)
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| - The dental lamina is a band of epithelial tissue seen in histologic sections of a developing tooth. The dental lamina is first evidence of tooth development and begins (in humans) at the sixth week in utero or three weeks after the rupture of the buccopharyngeal membrane. It is formed when cells of the oral ectoderm proliferate faster than cells of other areas. Best described as an in-growth of oral ectoderm, the dental lamina is frequently distinguished from the vestibular lamina, which develops concurrently. This dividing tissue is surrounded by and, some would argue, stimulated by ectomesenchymal growth. When it is present, the dental lamina connects the developing tooth bud to the epithelium of the oral cavity. Eventually, the dental lamina disintegrates into small clusters of epithelium and is resorbed. In situations when the clusters are not resorbed, (this remnant of the dental lamina is sometimes known as the glands of Serres) eruption cysts are formed over the developing tooth and delay its eruption into the oral cavity. This invagination of ectodermal tissues is the progenitor to the later ameloblasts and enamel while the ectomesenchyme is responsible for the dental papilla and later odontoblasts. (en)
- De lamina dentalis is een band van epitheelweefsel dat voorkomt in histologische secties van een zich ontwikkelende tand. De tandheelkundige lamina is een eerste aanwijzing van tandontwikkeling en begint bij de zesde week of drie weken na de breuk van de . Het wordt gevormd wanneer cellen van het orale ectoderm zich sneller ontwikkelen dan de andere cellen, met deze ingroei van het orale ectoderm wordt de lamina dentalis vaak onderscheiden van de die zich gelijktijdig ontwikkelt. Dit aparte weefsel is omgeven door en wordt, volgens sommigen, gestimuleerd door groei. Eenmaal aanwezig verbindt de lamina dentalis de punt van de zich ontwikkelende tand aan het epitheel van de mondholte. Uiteindelijk vervalt de lamina dentalis in kleine clusters van epitheel en wordt geresorbeerd. In situaties waarin de clusters niet geresorbeerd worden, (deze resten van de lamina dentalis wordt ook wel de klieren van Serres genoemd) ontstaat een over de ontwikkelende tand en leidt de uitbarsting tot vertraging in het doorgroeien in de mondholte. Deze instulping in het ectodermale weefsel is de voorlopercel van latere ameloblasten en glazuur terwijl het ectomesenchym verantwoordelijk is voor de en later odontoblasten. (nl)
- A lâmina dentária é uma banda de tecido epitelial visto em secções histológicas no desenvolvimento de um dente. A lâmina dental é primeira evidência de dente e começa a se desenvolver na sexta semana no útero ou três semanas após a ruptura da membrana bucofaringeal. É formado nas células do ectoderma oral e se proliferam mais rapidamente do que células de outras áreas. Eventualmente, a lâmina dentária desintegra-se em pequenos aglomerados de epitélio e é reabsorvido. Nas situações em que os não são reabsorvidos, cistos são formadas ao longo do desenvolvimento dente e retardam a sua erupção na cavidade bucal. (pt)
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