oral biology 5301
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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. - PowerPoint PPT PresentationTRANSCRIPT
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
Clinical Correlates of Bone Growth and Development
Facial skeletal development Maxillary development Mandibular development
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
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
Clinical Correlates of Bone Growth and Development
Bone grafting to treat dentoalveolar defects
Bone grafting to treat discontinuity defects
Fracture healing
Cellular Growth Hypertrophy Hyperplasia Secretion of extracellular material Interstitial growth
Embryologic Type of Bone Endochondral Intramembranous
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
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
Orthodontic Tooth Movement Bone apposition and resorption Effects on the pulp Effects on the PDL Effects on the tooth root
Effects of Periosteum Provision of undifferentiated
mesechymal cells Envelope to limit/regulate bone
apposition
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
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
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
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
Facial Growth and Development 15 year old man Congenital cleft lip and palate 29 surgeries to nose and lip Significant malocclusion Status post facial skeletal growth Masticatory insufficiency
Facial Growth and Development 4 year old boy with jaw immobility Mother concerned about failure to
thrive and ability to receive dental care
Anterior open bite Etiology unknown
Facial Growth and Development 7 year old boy Condylar neoplasm resected as
infant (age 2) and recurrence treated age 4
Concerns about facial growth and development