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Samenvatting Les 14: de gingiva
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Samenvatting van les 14 uit de online Sofia cursus van prof. Frederik De Smet.
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Weefselleer: les 14: de gingiva1. Algemene opbouw gingiva
1.1. Algemene opbouw van gingiva
Fusie van epitheel van gereduceerd glazuurlichaampje + mondepitheel
Bekleed door gekeratiniseerde kauwmucosa
3 zones:
• Vrije of marginale zone
Tandvlees dat tandhals omsluit, niet vastgehecht aan de
tand
Gingivale sulcus = niet-aangehechte zone tussen tand en
gingiva, bedekt met sulculair epitheel
• Aangehechte zone
Deel van gingiva dat verbonden is met tand en bot
• Interdentale zone
Gingiva tussen 2 aanpalende tanden
Grensvlakken:
• Gingivale sulcus: ruimte tussen tand en vrije gingiva
• Marginale groeve: lichte intrekking op grens tussen vrije
en aangehechte gingiva
• Mucogingivale junctie: grensvlak tussen gingiva en alveolaire mucosa à junctie
tussen kauwmucosa en bekledende mucosa
1.2. Mucogingivale junctie
Erg duidelijk afgelijnd:
• Overgang van keratiniserend epitheel (gingiva) à niet-keratiniserend epitheel
(alveolaire mucosa)
Macroscopisch ook zichtbaar door mucogingivale groeve
• Lamina propria van gingiva: strakke collageen bundels verbonden met periostium en
bot
Lamina propria van alveolaire mucosa: veel lossere
structuur, rijk aan elastine vezels die doordringen tot
submucosa à terug naar oorspronkelijke vorm na
uitrekking
2018-2019 1
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