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Occlusion, in a dental context, means simply the contact between teeth.More technically, it is the relationship between the maxillary (upper) and mandibular (lower) teeth when they approach each other, as occurs during chewing or at rest.
The upper teeth, either on the edge of the teeth or inner surface ; The alveolar ridge, the gum line just behind the teeth ; The back of the alveolar ridge (post-alveolar) The hard palate on the roof of the mouth ; The soft palate further back on the roof of the mouth
No language relies on such a difference. There are also lateral flaps. Trill, in which the articulator (usually the tip of the tongue) is held in place, and the airstream causes it to vibrate. The double "r" of Spanish "perro" is a trill. Approximant, where there is very little obstruction. Examples include English /w/ and /r/.
The letters s, t, n, l are frequently called 'alveolar', and the language examples below are all alveolar sounds. (The Extended IPA diacritic was devised for speech pathology and is frequently used to mean "alveolarized", as in the labioalveolar sounds [p͇, b͇, m͇, f͇, v͇] , where the lower lip contacts the alveolar ridge.)
Conversely, a deficient VDO will appear as though the patient's mouth has collapsed, and the chin appears too close to the nose; in essence, the patient would be over-closing their mouth because there would not be enough wax on the wax rims to maintain the proper vertical dimension of occlusion.
Interdental lisping is produced when the tip of the tongue protrudes between the front teeth and dentalized lisping is produced when the tip of the tongue just touches the front teeth. The transcription in the International Phonetic Alphabet for interdental sibilants is [s̪͆] and [z̪͆] and for simple dental sibilants is [s̟] and [z̟] .
Its manner of articulation is sibilant fricative, which means it is generally produced by channeling air flow along a groove in the back of the tongue up to the place of articulation, at which point it is focused against the sharp edge of the nearly clenched teeth, causing high-frequency turbulence. There are at least three specific variants of ...
The voiceless dental plosive can be distinguished with the underbridge diacritic, t̪ and the postalveolar with a retraction line, t̠ , and the Extensions to the IPA have a double underline diacritic which can be used to explicitly specify an alveolar pronunciation, t͇ . The [t] sound is a very common sound cross-linguistically. [1]