Dental Presentation E.N.T.
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Transcript of Dental Presentation E.N.T.
Clinical Nasal SlidesFor
Dental Studients
By
Prof. Dr. Foad Abbas
External Nasal skeleton
1. Lower lateral cartilage
2. Upper lateral cartilage
3. Nasal bone2
3
1
External Nasal skeleton
1. Lower lateral cartilage
2. Upper lateral cartilage
3. Nasal bone
4. Alar cartilage1
2
3
4
Nasal septum1. Frontal bone2. Perpendicular plate of
ethmoid bone3. Nasal bone4. Vomer bone5. Palatine bone6. Maxillary crest7. Anterior nasal spine8. Quadrangular
cartilage9. Upper lateral cartilage10. Caudal end of septum11. Membranous septum12. Sphenoid sinus
12
Nasal turbinates
1. Superior turbinate
2. Middle turbinate
3. Inferior turbinate
1
2
3
Anterior group of
Paranasal sinuses
1. Frontal sinus
2. Ethmoid sinus
3. Maxillary sinus
1
2
3
Paranasal sinuses
Paranasal sinus Anatomy
Lateral wall of the nose
Superior meatus
Middle meatus
Inferior meatus
The osteomeatal complex
Maxillary sinus
Anatomy of the palate
Anatomy of the palate
Unilateral cleft lip
Cleft palate
• May involve soft palate, hard palate or both• May be unilateral or bilateral
Cleft palate
Soft palate cleft (no bony cleft)
Unilateral Cleft lip and palate
unilateral Cleft lip and palate
Bilateral cleft lip and palate
Bilateral cleft lip and palate
bilateral Cleft lip and palate
Feeding bottle and dental obturators for feeding Cleft Palate patients
Fracture nasal bones
Plain X-ray lateral view nasal bone showing facture nasal bone
Ct scan fracture nasal bone
Walsham Forceps
Ash forceps
Zygoma Fractures
Reduction of zygomatic fracture
Panoramic view of a fracture mandible
Le Fort’s fractures
Le Fort’s fractures
Le Fort I
• Fracture line across the alveolar border
Le Fort II• Triangular fracture involving the nasal
bones without the zygoma
Le Fort III• The midface separates from the cranium
Acute maxillary sinusitisThis is a common complication of a head cold. Apical infection of the teeth related to the antrum, or oro-antral fistula following dental extraction also cause maxillary sinusitis, as may trauma with bleeding into the antrum, or barotrauma. Frontal or facial pain may be referred to the upper teeth. Nasal obstruction and purulent rhinorrhoea are the other symptoms. The antrum is opaque on X-ray and dull on transillumination. There may be tenderness over the sinus but swelling is rare. Pus is seen issuing from the middle meatus.
• Maxillary sinusitis can cause pain in the upper teeth. Tooth pain is often the symptom that brings patients to the office
• Periapical x-ray of maxillary teeth and sinus floor 10% of sinusitis is due to a dental source.
• First maxillary molar is usually the tooth involved because of its location
Dental sinusitis
The apices of the molar teeth may be extremely close to the antral mucosal lining. The upper wisdom tooth apparent on this X-ray, if infected, would be likely to cause maxillary sinusitis or, if removed, would be clearly at risk to cause an oro-antral fistula.
CT paranasal sinus
Opaque left maxillary antrum
Chronic sinusitis left maxillary cyst
Osteo-meatal complex
Opacity of right maxillary, ethmoid and left maxillary sinuses
Chronic sinusitisleft maxillary thickened mucosa
Antral puncture and lavage
• This involves inserting a trocar and cannula under the inferior turbinate, and puncturing the lateral wall of the nose through the maxillary process of the thin inferior turbinate bone, to enter the antrum.
Antral puncture and lavage
• Water is irrigated through the cannula and the pus emerges through the maxillary ostium. An acutely infected maxillary sinus must not be washed out, until medical treatment has controlled the acute phase; cavernous sinus thrombosis remains a danger.
Antral wash
Antral washout
Aspiration from the antrum for bacteriological examination
The Caldwell-Luc operation
• Chronic maxillary sinusitis may require the Caldwell-Luc operation in which the antrum is opened with a sublabial antrostomy, the antral mucous membrane is removed, and an intranasal antrostomy made.
Caldwell Luc operation
Oro-Antral fistula
Long standing oro-antral fistula with pus coming through the fistula
Maxillary sinusitis
Oro-antral fistula repair by buccal flap
1 2
3 4
Dental cyst (x-ray)
• It arises due to infection around the apex of a tooth
Dental cyst
Dentigerous cyst• It is a cyst around unerupted tooth
Torus palatinus
The bony hard midline palatal swelling can be diagnosed confidently by its characteristics. It is a common finding and only requires removal if it interferes with the fitting of a denture. A large torus palatinus may take on a curious irregular appearance, suspicious of a carcinoma.
Adamantinoma (Ameloblastoma)• Locally malignant tumor• Arises from ameloblasts• May be unicystic or multicystic on x-ray• Treatment excision with safety margin
Osteoclastoma • Arises from osteoclasts• Has a honey comb appearance on X-ray• Treatment surgical excision with safety margin
Fibrous dysplasia
• It is not a true tumorbut a proliferation of fibro-osseous tissue
• May be mono-ostotic or poly-ostotic
• Ground glass appearance on CT
Malignant nasal tumours
A nasal polyp that does not appear grey and opalescent should arouse suspicion, as should a polyp that bleeds spontaneously. Granulation tissue in the nose may be malignant granuloma or carcinoma, and biopsy of any suspicious nasal lesion is necessary.
A pigmented polyp may be a malignant melanoma.
Carcinoma of the antrum or ethmoid
These may extend not only into the nasal fossa and cheek but may present in the oral cavity appearing as a dental lesion. The antrum is opaque on X-ray with evidence of bony destruction
Prognosis when radiotherapy is followed by maxillectomy is quite good for an early maxillary carcinoma, but poor when there is extensive invasion. Exenteration of the orbit with maxillectomy is necessary when the eye is involved, but carcinoma with posterior spread to the base of the skull is inoperable. The use of cytotoxic drugs results in regression in some of these paranasal sinus neoplasms and is a further line of treatment. Extension of a neoplasm superiorly into the anterior cranial fossa involves resection superiorly of the dura and involved frontal lobe of the brain in continuity with the nasal and sinus neoplasm (cranio-facial resection).
Cancer maxilla destroying the palate and presenting the mouth
Cancer maxilla CT
Cancer maxilla CT
Nasal carcinoma
Osteogenic sarcoma of the maxillary sinus,
cronal CT• Invasive bony
destructive lesion with necrotic debris filling remainder of the sinus. Tooth roots exposed
• Contra-lateral mucosal retention cyst
Dental obturator
Epistaxis
Little’s areaIt is the commonest site of epistaxis. Is a circle ½ in diameter, it lies ½ an inch from the floor of the septum & ½ an inch from the vestibule
Arterial supply:
1. From internal carotid artery
2. From the external carotid
Compression of Epistaxis
For unilateral epistaxisWrong method of compression
Anterior Nasal pack
Posterior pack
Nasal Balloon
TMJ artheritis
Causes of nasal obstruction
Posterior choanal atresia
Bilateral atresia presents with dyspnoea soon after birth. Immediate surgical correction is required. A membranous atresia may be perforated and dilated using metal sounds, but if the atresia is bony it must be opened with a drill.
Causes of nasal obstruction
Deviated nasal septumA congenital or traumatic dislocation of the septal cartilage into one nasal fossa causes unilateral nasal obstruction.
Deviated septum
Lip ulcersLip ulceration has numerous causes, either traumatic, inflammatory, or neoplastic: the provisional diagnosis can be made from the history and type of ulcer. Biopsy is necessary to confirm the diagnosis. The lesion is a pyogenic granuloma. Although these lesions are frequently small and related to trauma, they may enlarge from secondary infection and take several weeks to heal.
secondary infection
Traumatic ulcer
• Irregular with slightly elevated borders
Palatal trauma
Muco-cutaneous candidiasis
• Deep fissuring of the tongue is the end result of long-term infection
Black hairy tongueThis may be. fungal (Aspergillus niger) and related to prolonged antibiotic therapy. Tobacco may be a cause. Scraping and cleaning the tongue temporarily improves the appearance but is unnecessary for this condition is harmless.
Primary herpetic stomatitis• Is the result of first infection by the Herpes I virus and
occurs most commonly in children and in young adults.• The lesions are initially vesicular and may occur at the
junction any site in the oral cavity. Usually they are wide spread.
• The vesicles rapidly break down and it is unusual to see them intact
Herpes simplex
Herpes simplex of the lip showing the characteristic vesicles which later crust.
crust
• the vesicles may partially breakdown with the production of ulcerated areas covered by yellow sloughs.
• Malaise, pyrexia and marked cervical lymphadenopathy are present.
Primary herpetic stomatitis
Herpes simplex
Herpes zosterIn the head and neck, the herpes zoster virus may affect the Gasserian ganglion of the Vth cranial nerve. The vesicular type of skin eruption is confined to the distribution of the nerve. The ophthalmic division of V is most frequently involved, but all three divisions of V are rarely affected at the same time.
mandibular division
maxillary division
Vitamin C deficiency (scurvy)
• The characteristic oral change in scurvy is a gingivitis, the papillae being swollen, with a purple tint and a re fragile.
• Patients often has neglected oral hygiene
Primary syphilis (chancre)
• Appears as an indurated swelling 2-3 weeks after infection. At first, the surface is glazed but later becomes crusted
Aphthous ulcers
• The aetiology of these extremely common ulcers remains unknown
• An area of white superficial ulceration is surrounded by a hyperaemic mucous membrane. These commonly occur in crops of two or more and heal spontaneously in about one week. They are acutely tender and affect the nonkeratinised oral mucous membrane.
• Aphthous ulcers on the tongue margin are often traumatic from tooth irregularity
• An aphthous-like ulcer overlying the apex of this deciduous tooth suggests the diagnosis of an apical dental abscess.
Minor salivary gland tumor
A palatal swelling which is not bony and hard may be a cyst if midline, but if placed to one side, it is almost certainly a tumour of one of the minor salivary glands. Biopsy is necessary.
Hard palatal carcinoma
Carcinoma of the tongueThis usually occurs on the margin or from the extension of an ulcer on the floor of the mouth (as shown here). Biopsy of this proliferative ulcer showed squamous cell carcinoma. Partial glossectomy in continuity with a neck dissection, or radiotherapy are the current treatments.
Cancer oral cavity
Skin sensitivity test
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