prof.dr. ahlam el-sharkawy head of prosthodontic departement pharos university in alexandria pharos...
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Prof.Dr. Ahlam El-SharkawyProf.Dr. Ahlam El-SharkawyHead of prosthodontic Head of prosthodontic departementdepartement
Pharos University in Pharos University in AlexandriaAlexandria
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Dr. house
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•In general, posterior denture base flange should be at least 2mm thick and should
display rounded borders.
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Costen’s Syndrom
1 -Vestibulo – cochlear Nerve ( 8th cranial nerve)
2 -Chorda Tympani Nerve(Branch from Facial Nerve-7th c.n)
3-Auriculo-Temporal Nerve(Branch from Mandibular n . which is Branch from Trigeminal n. 5th c.n(
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I – Otological Symptoms :
Pressure on Vestibulo-Cochlear n.
1 -Tinnitus2 -Mild Catarral Deafness
3 -Vertigo
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II – Oral SymptomsPressure on Chorda Tympani
1 -Burning Sensation in the ant. 2/3 of the Tongue
2 -Metalic Taste
3 -Xerostomia
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III – T.M.J and Peri auricular Symptoms
Pressure on Auriculo-temporal n.
1 -Pain in T.M.J
2-Pain in the Ear
3-Pain in the Periauricular Region
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1 -labial Sound2 -Dental Sound
3-Labio-dental Sound4-Linguo-dental Sound5 -Linguo Palatal Sound
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-It results from contact between upper and
-lower Lips to pronounce-: [ B,P,M]
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-Result from Relation Between Incisal Edge Of Upper ant. Teeth
and Lower ant. Teeth to Pronounce ( S )
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Result from Contact Between Lower Lip and Incisal Edge of Upper ant.
Teeth to Pronounce ( F , V )
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Result from Contact Between Tip of Tongue and Incisal Edge of
Upper anterior Teeth to Pronounce ( Th )
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-Results from: A- Contact Between Tip of the Tongue and ant. Part of the palate to Pronounce ( T , D )
B- Contact Between Tip of the Tongue and Middle Part of the Palate to Pronounce ( H )
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Lisping---whistling
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