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the formation of a crater as a result of destruction of interdental tissues so that, in effect, there exists a labial and lingual curtain of gingiva with no interproximal connection at all.
A groove or channel.
A concave positioning device attached to a wheelchair armrest that positions the arm and prevents lateral leaning, thus encouraging postural alignment.
A three-dimensional area within which structures are accurately reproduced on a panoramic radiograph. Positioning the patient within the focal trough is critical to producing a panoramic radiograph that clearly reproduces oral structures.
gingival troughGingival sulcus.
The depression in a muscle fiber adjacent to the axon terminal of a motor neuron in a myoneural junction.
gin·gi·val trough(jinji-văl trawf)
Formation of a crater due to destruction of interdental tissues so that, in effect, there exists a labial and lingual curtain of gingiva with no interproximal connection at all.