A groove in the gingival margin, known as a floss cleft, can form after repeatedly using floss incorrectly along the mesial and distal surfaces of the tooth.
2.
The gingival margin, or free gingival crest, at the most superficial part of the marginal gingiva, is also easily seen clinically, and its location should be recorded on a patient s chart.
3.
A variant of the periodontal abscess is the gingival abscess, which is limited to the gingival margin, has a quicker onset, and is typically caused by trauma from items such as a fishbone, toothpick, or toothbrush, rather than chronic periodontitis.
4.
Thus, if the entire height of the keratinized gingiva, from the free gingival margin to the mucogingival junction is 8 mm, and the probing depth on the tooth at that location is 2 mm, the effective width of attached gingiva is 6 mm.
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