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Biocompatibility Of Dental Materials Practice Test

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The oral cavity is lined with which tissue?
Correct Answer:
Mucosa
Explanation:
The lining of the oral cavity is the oral mucosa, a moist membrane made of stratified squamous epithelium overlaying connective tissue. It covers all surfaces inside the mouth—lips, cheeks, floor of the mouth, palate, and the underside of the tongue—and includes the gingiva around the teeth as part of this lining. This makes mucosa the correct answer because it is the continuous protective tissue that lines the mouth, whereas dentin and enamel are tooth tissues (dentin lies beneath enamel inside the tooth; enamel covers the tooth crown). Gingiva is a specialized part of the mucosa surrounding teeth, not the entire lining by itself.

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