牙本質(dentin),也稱為齒質、象牙質,是構成牙齒主體的微黃色組織,介於牙釉質與牙髓之間。牙本質的組成70%為無機物(主要為鈣和磷),20%為有機物,10%為水分。硬度低於牙釉質,高於牙骨質。
和牙釉質不同的是,它終身都會繼續不斷地生長,因此當有蛀洞產生會自行長出新的牙本質修復[1]。
牙本質內外貫穿牙本質小管。
參考資料
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