6 Swift Growth Slides
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Transcript of 6 Swift Growth Slides
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Oral Biology 5670
• 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
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Clinical Correlates of Bone Growth and Development
• Facial skeletal development • Maxillary development • Mandibular development
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Clinical Correlates of Bone Growth and Development
• Effect of congenital anonalies 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
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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
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Clinical Correlates of Bone Growth and Development
• Bone grafting to treat dentoalveolar defects• Bone grafting to treat discontinuity defects• Fracture healing
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Cellular Growth
• Hypertrophy• Hyperplasia• Secretion of extracellular material• Interstitial growth
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Embryologic Type of Bone
• Endochondral• Intramembranous
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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
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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
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Orthodontic Tooth Movement
• Bone apposition and resorption• Effects on the pulp• Effects on the PDL• Effects on the tooth root
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Effects of Periosteum
• Provision of undifferentiated mesechymal cells
• Envelope to limit/regulate bone apposition
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Introduction10 y.o. female 12/98
• CC:– Noticed swelling in
face on left side for two weeks
• HPI:– Facial swelling– Left lower lip “tingles”– No pain or change in
bite
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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
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Assessment
• Problem list:– Multilocular
radiolucent lesion– Teeth vital without
resorption, displacement, or mobility
– Apparent cortical expansion
• Diff. Dx:– Central Giant Cell
Lesion– Ameloblastomic
Fibroodontoma– Ameloblastoma
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Treatment Plan
• Impressions for splint fabrication• Screening labs Ca, alk phos, PTH
– All WNL
• CT of mandible:– Multilocular radiolucents, from infer border to
encompass tooth roots superiorly– Buccal and lingual cortices intact, although expansion
present
• Incisional bx