Oral Biology 5301 - PowerPoint PPT Presentation

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Oral Biology 5301

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  1. Oral Biology 5301 • Bone growth and development • Bone biology • Educational objectives • Exposure to basic concepts of bone biology • Correlation of basic bone biology to clinical treatment • Special considerations / implications of bone biology to dentistry

  2. Clinical Correlates of Bone Growth and Development • Facial skeletal development • Maxillary development • Mandibular development

  3. Clinical Correlates of Bone Growth and Development • Effect of congenital anomalies on facial growth and development • Effect of surgical correction of congenital anomalies on facial growth and development • Tooth development and retention influence on alveolar bone levels

  4. Clincal Correlates of Bone Growth and Development • Orthodontic tooth movement • Bone healing following tooth extraction • Bone response to alloplastic materials • Bone healing in approximation of dental implants

  5. Clinical Correlates of Bone Growth and Development • Bone grafting to treat dentoalveolar defects • Bone grafting to treat discontinuity defects • Fracture healing

  6. Cellular Growth • Hypertrophy • Hyperplasia • Secretion of extracellular material • Interstitial growth

  7. Embryologic Type of Bone • Endochondral • Intramembranous

  8. Functional Matrix Theory of Growth • “Growth of the face occurs as a response to the functional need and is mediated by the soft tissue in which the bone is embedded” • Soft tissues grow, bone and cartilage react

  9. Growth Control • Bone is the determinant of its own growth • Cartilage is the determinant of bone growth • Soft tissue matrix is the determinant of growth • All are controlled genetically

  10. Orthodontic Tooth Movement • Bone apposition and resorption • Effects on the pulp • Effects on the PDL • Effects on the tooth root

  11. Effects of Periosteum • Provision of undifferentiated mesechymal cells • Envelope to limit/regulate bone apposition

  12. CC: Noticed swelling in face on left side for two weeks HPI: Facial swelling Left lower lip “tingles” No pain or change in bite Introduction10 y.o. female 12/98

  13. Examination • Left lower facial swelling, without thrill/bruit • Lower vestibular swelling, L>R • No abnormal tooth mobility • Teeth 19-28 vital with EPT • CN II-XII grossly intact

  14. Problem list: Multilocular radiolucent lesion Teeth vital without resorption, displacement, or mobility Apparent cortical expansion Diff. Dx: Central Giant Cell Lesion Ameloblastomic Fibroodontoma Ameloblastoma Assessment