Oral and maxillofacial surgery lec. 11 4th years.

Oral and maxillofacial surgery

Lec. 11

المعال. دخيل حيدر دوالفكين – – والوجه الفم جراحة دكتوراه بورد

والفكين- – والوجه الفم جراحة ماجستيرالملكية برستل كلية مستشفى من تدريب شهادة

البريطانيةSoft tissues swellings of the oral mucosa.

1 .swellings of the gingiva . 2 .swellings of the buccal and palatal mucosa.

3 .swellings of the tongue .

Mucoceles . The most common type of soft tissues and salivary

gland cyst is the extravasations Mucocele.

it is not true cyst as it has no epithelial lining , Mucocele mainly affect the minor salivary glands ,

particularly of the lip .

the cause is usually damage to the duct of a mucous gland . this may be caused by a blow on the lip.

clinical features of Mucocele most often form in the lower lip but occasionally on the buccal mucosa or floor of the mouth ( ranula ).

It is usually superficial and rarely larger than 1 cm in diameter , in the early stages they appear as rounded ,fleshy swellings , later they are obviously cystic , hemispherical , fluctuant and bluish due to the thin

wall , A Mucocele can not be distinguished from a retention

cyst clinically.

Ranula. A Ranula is an uncommon type of salivary cyst arising from the sublingual or submandibular salivary

glands. the structure is usually the same as other salivary

retention cyst. it is 2 or 3 cm in diameter.

it is appears soft , fluctuant and bluish , they are typically painless but may interfere with speech or

mastication .

Mumps. Mumps is due a paramyxovirus virus (mumps

virus ) . clinical features:

painful swelling of the parotid. it is highly infectious.

is the most common cause of acute parotid swelling children are mainly affected.

an incubation period of about 21 days is followed by headache , malaise , fever and tense , painful and tender swelling of the parotids.

possible complication may lead to permanent nerve deafness or rarely

meningitis .adults who contract mumps may develop orchitis

or oophoritis , prolong malaise. diagnosis is usually obvious from the history and

clinical findings , especially in a child. mumps may be mistaken for a dental infection or

bacterial sialadenitis if unilaterally.

Median rhomboid glossitis. It was central papillary atrophy of the tongue.

Etiology : 1 .due to possibilities of inflammatory infections.

2 .or due to degenerative causes. 3 .or due to chronic candidal infection.

4 .or may be due to a developmental defect resulting from an incomplete descent of the tuberculum impar and entrapment of a portion of it

between the fusing lateral halves of the tongue. 5 .others suggesting the possibility of several

different etiologies .

clinical features: 1 .Median rhomboid glossitis more frequently in

male 2.the lesion is located on the dorsal surface of the

tongue in the midline and anterior to the circumvallates papillae.

the surface is dusky. red .

completely devoid of filiform papillae. usually smooth.

nodular. fissured surfaces.

Osteoma . Osteoma is a benign neoplasm.

characterized by proliferation of either compact or cancellous bone usually in an endosteal or

periosteal location. diagnosis of Osteoma in the jaws however where

infection is common , it is not always possible to differentiate a bony mass induced by irritation or inflammation from one of a true neoplastic

nature , so called exostoses and enostoses.

clinical features: arise at any age.

is not a common oral lesion. more common in the young adult.

it manifests as a circumscribed swelling on the jaw producing obvious asymmetry.

the Osteoma is a slow growing tumor must differentiate from Garre s non suppurative sclerosing Osteomyelitis.

seldom accompanied with pain. lesion not encapsulated.

roentgen graphic features lesion appears a well circumscribed Radiopaque mass.

Torus palatinusTorus mandibular .