iii. Solitary cyst like radiolucencies
IV. Solitary cyst like radiolucencies
1.Surgical defect
2.Residual cyst
3.Latent bone cyst
4.Odontogenic keratocyst
5.Nasopalatine duct cyst
6.Ameloblastma
7.Odontogenic fibroma
8.Central haemangioma
9.Central giant cell granuloma
1- Surgical defect
Asymptomatic
History of recent
surgery
Regress in size in
successive radiographs
2- Residual cyst
On edentulous ridge
May interfere with denture wearing
History of extraction
Previous radiographs
Location
Shape & periphery
Internal structure
Effect on
surrounding
structures
3-Latent bone cyst
Asymptomatic
Below the ID canal with
a corticated periphery
Does not increase in size
Sialography
4-Odontogenic keratocystDifferent growth pattern (PC, Solitary, Interradicular & multilocular)High recurrence rateAspiration: viscous, thick, cheesy material (keratin)In the mandibular body minimal BL expansion is apparent while severe expansion occur in the ramus
5- Nasopalatine canal cyst Swelling just posterior to the palatine papilla
Salty taste Numbness over the palatal mucosa
Well defined, corticated, round or heart shape, midline of the palate Root divergence and/or resorption
6- Ameloblastoma•Adult age (above 40years)•Male predilection, Mandible posterior region•Paraesthesia•Facial asymmetry•-ve Aspiration
•Expansion•Root resorption •Teeth displacement
6- Odontogenic fibroma
► young adults ►Female > male►Mand: molar-premolar►Asymptomatic Swelling►Teeth Displacement,
occasionally resorption
8- Central HaemangiomaYoung ageGingival bleedingThrobbing painRebound mobilityPulsatingMore commonly
multilocularSerpaginous tract
of I.A.C.
9- Central Giant Cell Granuloma
IV. Solitary radiolucencies with ragged, poorly
defined borders
Solitary ill defined radiolucencies• Chronic osteomyelitis• Sqamous cell carcinoma• Metastatic carcinoma• Osteogenic sarcoma• Fibrosarcoma• Fibrous dysplasia
Chronic osteomyelitisMore in posterior mandible
Signs & Symptoms of
chronic infection :
Intermittent and reccurent
episodes of swelling, pain, fever.
Lymphadenopathy (lymph
nodes tender, palpable & mobile)
Sinus draining pus
Paraesthesia
Squamous cell carcinomaOld ageS& S of malignancy (foul odour, ulceration , teeth loosened over a short period of time, L.N. enlarged, painless & fixed,…)
Saucer- shaped or irregular area of bone destructionDestruction of alveolar bone support of adjacent teeth (Teeth floating in space)Widening of PDL, loss of L.D.
Metastatic carcinoma
Old age
History of primary
tumor
Irregular areas of bone
destruction
Adjacent teeth floating
in space
Osteogenic sarcoma (osteolytic lesion)
Young adults
S & S of malignancy
Widening in periodontal membrane space
Loss of L.D.
Ill defined RL with ragged borders
Fibrosarcoma
Young adults
S & S of malignancy
Widening in P.M.S.
Loss of L.D.
Ill defined RL with ragged borders
Fibrous Dysplasia (Early stage)Maxilla>Mandible – Unilateral Young Children (<10ys)- neurologic symptpmsEarly RL, mostly mixed (Ground glass- Orange peel-
finger print appaerence), late RO.Ill defined RL blending with normal adjacent adjacent
boneCortical expansionObliteration of max. sinusUpward displacement of I.A.CThinning of PMSTeeth displacement
Unilateral Obliteration of max. sinus
Superior displacement of Inferior Alveolar canal
Fibrous Dysplasia (R.O. stage)
Top Related