benign bone lesions

benign bone lesions

1. fibro-osseous lesions

   • replacement of normal bone with fibrous tissue
     • containing a newly formed mineralized product
   • diagnosis is based on clinical and radiographic findings
   • development, reactive, neoplastic

2. Fibrous dysplasia

   • developmental tumor like condition
   • replacement of normal bone with fibrous connective tissue and irregular bone
   • monostotic
     • usually unilateral usally the maxilla
     • single bone
     • painless,
     • occurs in 2nd and 3rd decade
   • polystotic multiple bone
     • before age 10
     • femae
     • JAFEE LICHRNSTEIN
       • CAFE AU LAIT
     • MCCUNE ALBRUGHT
       • CAFE AU LAIT & MULTIPLE ENDOCRINOPATHIES
     • MAZAVRAUD
       • INTRAMUSCULAR MYOXAMS
   • ground glass radio
   • bone can resemble chinese characters.

3. ossifying fibroma/ cemetifying fibroma cemento

   • true neoplasm
     • CAN CAUSE EXPANSIOM
   • mandible affected more prmolar/molar area
     • ONE AREA
   • seperates from surrounding bone easily at surgery
   • SEPERATES FROM SURROUNDING BONE
   • WELL DEFINED RADIOLUCENCY
     • MIXED, RADIOPAQUE

4. ostogenesis imperfecta

   • brittle bone disease
   • XX
   • mutation on type 1 collagen gene
   • bone fractures
   • bone fragility and deformity
   • blue sclerae
   • hearing loss
   • osteopenia
   • increased number of wormian bones in skull
   • teeth described as opalescent similar to dentinogeniss imperfecta
   • pulpal obliteration narrow roots
   • blue yellow brown hue opalecte teeth

5. paget disease of bone osteitis deformans

   • affects older patients
   • patient are suscebtible to osteosarcoma
   • increased serum alkalin phoshpatase
   • pelvis, femur, skull, tibia, lumbar vertebrae
   • 2nd most common metabolic bone disorder
     • osteoporosis 1st
   • enlarged bones
   • increased head cicrumference if skull involved
   • deafness and visual impairments
   • maxilla involved in 17% of cases
     • middle 1/3
     • have a lion face leontiasis ossea
     • dentures feel tight because of alvelor ridge enlargement
   • cotton wool appearance
   • hypercementosis may be noted on teeth
   • mosaic jigsaw appearance
   • bone will show reversal lines

6. osteopetrosis albers schonberg disease

   • marble bone diseaes
   • failure of normal osteoclast function
   • results increased bone density
   • recessiv eautomasil linfaltile malignant
     • delayed tooth eruption, osteomyltitis
     • deafness , blindness, facial paralysi
     • roots of teeth blurred to increased densirty
   • XX dominant adult benign
     • increased radiopacity
     • variant nerve compression with no fractures
     • variant fracture no nerve compresion osteomyletis after tooth extraction

7. CEMNTO OSSEOUS DYSPLASIA : MOSTO COMMIN BFOLS IN CLINCAL PRACTIICE

   • focal cemento osseous dysplasia
     • affects females
     • asymptomatic
     • radiographic features
       • radiolucent
       • mixed
       • radiopaque
       • at surgery piece removed are gritty and come out in fragments
     • around apex of the tooth or extraction sites
     • POSETRIO MANBILE ONLY
   • periapical cemento osseous
     • affects BLACK female
     • anterior mandible
     • asymptomatic
     • affect apices of VITAL anterior teeth
     • treatment with observation
   • FLorid cemento osseous dysplasia
     • affects older black females
     • dentulous and edentulous areas
     • involve all 4 quandrants
     • susceptible to osteomyeltis