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Table 2 Classification of degree of adhesion of tongue coat adhesion by method of Kojima

From: The effect of tooth brushing, irrigation, and topical tetracycline administration on the reduction of oral bacteria in mechanically ventilated patients: a preliminary study

First-degree

1/3 dorsum of the tongue and thin

Second-degree

2/3 dorsum of the tongue and thin or 1/3 dorsum of the tongue and thick

Third-degree

2/3 or more dorsum of the tongue and thin or 2/3 dorsum of the tongue and thick

Fourth-degree

2/3 or more dorsum of the tongue and thick