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Abfraction is a form of non-carious tooth tissue loss that occurs along the gingival margin. [2] In other words, abfraction is a mechanical loss of tooth structure that is not caused by tooth decay, located along the gum line. There is theoretical evidence to support the concept of abfraction, but little experimental evidence exists. [3]
It is a very thin, black-blue line visible along the margin of the gums, at the base of the teeth. [1] [2] It is caused by the reaction between circulating lead and sulphur ions produced by oral bacteria, forming deposits of lead sulfide in the gums. [3] The sign was described in 1840 by Henry Burton: [4]
Gingival recession, also known as gum recession and receding gums, is the exposure in the roots of the teeth caused by a loss of gum tissue and/or retraction of the gingival margin from the crown of the teeth. [1] Gum recession is a common problem in adults over the age of 40, but it may also occur starting in adolescence, or around the age of 10.
Noticeable signs include receding gums,making the teeth appear longer. Gums may bleed more, and there may be some bone loss. Moderate periodontitis: As the gum disease progresses, pockets get ...
Putting pressure or warmth on the tooth may induce extreme pain. The area may be sensitive to touch and possibly swollen as well. This swelling may be present at either the base of the tooth, the gum, and/or the cheek, and sometimes can be reduced by applying ice packs. An acute abscess may be painless but still have a swelling present on the gum.
1) Enamel 2) Dentin 3) Junctional epithelium 4) Connective tissue 5) Alveolar bone 6) Gingival margin 7) Sulcular epithelium 8) Gingival epithelium 9) Cementum The dentogingival tissues consist of many constituents, such as the enamel or cementum of the tooth and the connective tissue supporting epithelia like the junctional epithelium, the gingival epithelium and the sulcular epithelium.
This leads to calculus buildup, which compromises the health of the gingiva (gums). Calculus can form both along the gumline, where it is referred to as supragingival (' above the gum '), and within the narrow sulcus that exists between the teeth and the gingiva, where it is referred to as subgingival (' below the gum ').
If only 1 tooth is present in a sextant, the tooth is included in the adjoining sextant. The probe is "walked around" measuring the depth of the gingival crevices/periodontal pockets (the gap between the tooth and the gums, "below the gumline") with a force of approximately 20 - 25 gm (20 - 25 N) (about the force using when writing with a pencil).