1. Prof.Dr. Ahlam El-Sharkawy Head of prosthodontic departement Pharos University in Alexandria Pharos University in Alexandria

3. Dr. house

8. Indelible pencil Disclosing wax Visual examination

9. In general, posterior denture base flange should be at least 2mm thick and should display rounded borders.

19. Costen’s Syndrom 1- Vestibulo – cochlear Nerve ( 8 th 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)

20. I – Otological Symptoms : Pressure on Vestibulo-Cochlear n. 1- Tinnitus 2- Mild Catarral Deafness 3- Vertigo

21. II – Oral Symptoms Pressure on Chorda Tympani 1- Burning Sensation in the ant. 2/3 of the Tongue 2- Metalic Taste 3- Xerostomia

22. 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

26. 1- labial Sound 2- Dental Sound 3-Labio-dental Sound 4-Linguo-dental Sound 5- Linguo Palatal Sound

27. -It results from contact between upper and -lower Lips to pronounce-: [ B,P,M]

28. -Result from Relation Between Incisal Edge Of Upper ant. Teeth and Lower ant. Teeth to Pronounce ( S )

29. Result from Contact Between Lower Lip and Incisal Edge of Upper ant. Teeth to Pronounce ( F, V )

30. Result from Contact Between Tip of Tongue and Incisal Edge of Upper anterior Teeth to Pronounce ( Th )

31. -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 )

32. Lisping---whistling