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牙周組織有哪些結構

Posted By vickong pun     July 8, 2021    

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牙周組織有哪些結構

  牙周組織有哪些結構?牙周組織有哪些結構牙周組織由牙周膜、牙槽骨和牙龈3部分組成,它們支持和固定著牙齒。如果將牙齒比作一棵樹,牙周組織好像是樹根周圍的土.
(第1)牙周膜:是連接牙根與牙槽骨之間的纖維組織,所以牙齒實際上是懸吊在牙槽窩中的,好像睡在吊床中的人一樣,這種結構有利于緩沖牙齒的咀嚼力,使它不集中在牙槽骨的某一點,而均勻分布在牙槽骨的骨壁上。
(第2)牙槽骨:是颌骨的突起部分,形成牙槽,容納牙根,使牙齒保持直立狀態,便于咀嚼。
(第3)牙龈:覆蓋在牙槽骨的表面,是平時我們隨時可看到的部分,邊緣呈圓弧形,包繞著牙頸部。在兩牙之間的牙龈呈楔形,稱爲牙龈乳頭。正常的牙龈爲粉紅色,質韌,能夠耐受食物的摩擦。

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