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thumbThe sulcular epithelium is a thin, non-keratinized epithelial lining that forms the smooth inner wall of the gingival sulcus, extending from the gingival margin coronally to the dentogingival junction apically. The gingival sulcus normally measures 0.5-3 mm in healthy individuals; an increase beyond this range may indicate pseudopocket formation or periodontal disease. The sulcular epithelium primarily acts as the protective barrier against foreign substances while also playing a crucial

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