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maxillary-160630160251 (1).pptx

  1. 1. MA.XILLARY SINUS PRESENTATION BY: 1) Moreshwar Pawar 2) Saurabh Pawar 3) Harshal Madhavi 4) Vishal Tele
  2. 2. Paranasal sinuses – Air containing bony spaces present around the nasal cavity. – Usually lined by respiratory mucus membrane . – Four paired FRONTAL SINUS SPHENOIDAL SINUS ETHMOIDAL SINUS MAXILLARY
  3. 3. Maxillary Sinus The maxillary sinus is the pneumatic space that is lodged inside the body of the maxilla. It communicates with the environment by the way of the Middle nasal meatus and the Nasal vestibule. It is one of the paranasal sinuses. ANTRUMO F .HIGHMORE
  4. 4. DEVELOPMENTAL A.SPECTS First sinus to develop Initial development of sinus follows number of morphogenic events in differentiation of nasal cavity
  5. 5. Horizontal shift of palatal shelves and subsequent fusion with one another. Nasal septum separates Oral cavity from nasal chambers Expansion of lateral nasal wall and 3 walls begin to fold 3 Nasal conchae & 3 meatus Superior & inferior - Shallow depression for half of IU Life Middle - Expansion in lateral wall and in inferior direction
  6. 6. Devevlopmental anomalIues 1 2 . Agenesis : complete absence of maxillary sinus . Aplasia : incomplete formation.
  7. 7. Developmentalanomalies 3. Hypoplasia : failure to develop to normal size 4. Supernumary maxillary sinus : more than the usual number.

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