Radiographic
appearance of
maxillary sinus
Prepeared by ::
Prepeared by
Zara khasrow balaki
Zara khasrow balaki
Maxillary
Maxillary sinus is an air containing cavity
sinus membrane
lined by mucous
The sinus may be considered
as a three sided pyramid its
three sides are:
Maxillary sinus are largest
Maxillary sinus are largest
sinuses amongst the other
sinuses amongst the other
paranasal sinu...
Intraoral periapical radiograph :
In these radiograph the roots of the maxillary teeth may
appear to project directly into...
In periapical radiograph one must remember that:
*most antral changes caused by
pathosis are radiopaque
*a radiopaque band...
On the periapical radiograph of canine the
On the periapical radiograph of canine the
floors of the sinus and aa cavity ar...
the anterior maxillary
occlusal projection, the
cross sectional maxillary
anterior projection and
the lateral maxillary
oc...
Standard radiograph
1. the caldwell view(occepito frontal)
1. the caldwell view(occepito frontal)
2.water’s view (occepitomental view)
2.water’s view (occepitomental view)
3.The lateral
view
this is an ideal view
when opaque
foreign bodies are
being looked for in
the maxillary sinus
4.Submentovertex view
4.Submentovertex view
Panoramic view
(orthopantomography)
Gives a good display of the lower aspects of antrum

On the panoramic radiograph
maxil...
Most of the anterior and posterior walls
of the maxillary sinus are superimposed
upon the medial wall in the
pantomogram.
Computerized tomography and
magnetic resonance imaging
Provide multiple section through the
sinus at different planes
MRI of the paranasal sinuses is a comlimentary
imaging technique to CT
MRI can image intra cranial complications of
inflam...
MRI can readily separate tissues oof similar densities better
MRI can readily separate tissues oof similar densities bette...
Antral diseases and their
Antral diseases and their
radiographic appearance
radiographic appearance

Antroliths

These are...
Thickining of the
sinus mucosa and
the accumulation of
secretions that
accompany
sinusites reduce air
content of the sinus...
Irregular thickining of
the radiopaque lining on
the inner side of sinus
because of mucosal
hypertrophy
Shrinkage of the
r...
references
radiology of Maxillary sinus
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radiology of Maxillary sinus

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radiology of Maxillary sinus

  1. 1. Radiographic appearance of maxillary sinus Prepeared by :: Prepeared by Zara khasrow balaki Zara khasrow balaki
  2. 2. Maxillary Maxillary sinus is an air containing cavity sinus membrane lined by mucous
  3. 3. The sinus may be considered as a three sided pyramid its three sides are:
  4. 4. Maxillary sinus are largest Maxillary sinus are largest sinuses amongst the other sinuses amongst the other paranasal sinuses paranasal sinuses
  5. 5. Intraoral periapical radiograph : In these radiograph the roots of the maxillary teeth may appear to project directly into the sinus and may produce conical elevations on the floor of the sinus ,yet there is always a layer of bone and mucosa covering these roots
  6. 6. In periapical radiograph one must remember that: *most antral changes caused by pathosis are radiopaque *a radiopaque band of tissue following the contour of the sinus indicate generalized inflamatory reaction of the sinus mucosa leading to hyper plasia *a localized opaque thickening adjacent to the source of inflammation as in severe periodontal disease indicated localized mucosites
  7. 7. On the periapical radiograph of canine the On the periapical radiograph of canine the floors of the sinus and aa cavity are often floors of the sinus and nasal cavity are often nasal superimposed and maybe seen crossing each superimposed and maybe seen crossing each other forming an inverted Y in the area other forming an inverted Y in the area
  8. 8. the anterior maxillary occlusal projection, the cross sectional maxillary anterior projection and the lateral maxillary occlusal projection are excellent techniques to visualize maxilla from the palatal aspect
  9. 9. Standard radiograph 1. the caldwell view(occepito frontal) 1. the caldwell view(occepito frontal)
  10. 10. 2.water’s view (occepitomental view) 2.water’s view (occepitomental view)
  11. 11. 3.The lateral view this is an ideal view when opaque foreign bodies are being looked for in the maxillary sinus
  12. 12. 4.Submentovertex view 4.Submentovertex view
  13. 13. Panoramic view (orthopantomography) Gives a good display of the lower aspects of antrum On the panoramic radiograph maxillary sinus appear as paired radiolucent areas located above the apices of maxillary premolars and molars .the floor of the maxillary sinus is composed if dense cortical bone and appear as a radiopaque line
  14. 14. Most of the anterior and posterior walls of the maxillary sinus are superimposed upon the medial wall in the pantomogram.
  15. 15. Computerized tomography and magnetic resonance imaging Provide multiple section through the sinus at different planes
  16. 16. MRI of the paranasal sinuses is a comlimentary imaging technique to CT MRI can image intra cranial complications of inflammatory disease
  17. 17. MRI can readily separate tissues oof similar densities better MRI can readily separate tissues oof similar densities better than CT which is useful to diffrentiate tumors from than CT which is useful to diffrentiate tumors from inflammatory disorders as well as haemorrhage and inflammatory disorders as well as haemorrhage and inflammatory secretions inflammatory secretions MRI is unable to image bone and air ,so evaluation of bony MRI is unable to image bone and air ,so evaluation of bony anatomy and pathology is difficult hence MRI is mainly anatomy and pathology is difficult hence MRI is mainly usefull to determine spread of disease ,especially usefull to determine spread of disease ,especially intracranially and intraorbitally intracranially and intraorbitally
  18. 18. Antral diseases and their Antral diseases and their radiographic appearance radiographic appearance Antroliths These are small bodies of varying sizes generally found in the base of sinus Generally They are homogeneous density and rarely they may have a more radiopaque area around They usually have irregular border
  19. 19. Thickining of the sinus mucosa and the accumulation of secretions that accompany sinusites reduce air content of the sinus and cause it to become increasingly radiopaque Acute right side maxillary sinusitis and chronic left side maxillary sinusitis
  20. 20. Irregular thickining of the radiopaque lining on the inner side of sinus because of mucosal hypertrophy Shrinkage of the radiolucent cavity of the sinus Acute right side maxillary sinusitis and chronic left side maxillary sinusitis
  21. 21. references
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