Section 2 Influencing factors of growth and development ◆Genetic factor Genetic variation,metabolic defects,endocrine disorders, chromosomal abnormalities More than 16,000 human genes play a role in craniofacial development. Environmental factor Prenatal environment,Postnatal environment Complex of genetic activity and external infuences can affect growth
◆ Genetic factor Genetic variation, metabolic defects, endocrine disorders, chromosomal abnormalities More than 16,000 human genes play a role in craniofacial development. ◆ Environmental factor Prenatal environment, Postnatal environment Complex of genetic activity and external infuences can affect growth. Section 2 Influencing factors of growth and development
Section 3 Growth and development of the craniofacial skeleton
Section 3 Growth and development of the craniofacial skeleton
Craniofacial growth and development Growth of the craniofacial skeleton origin:supporting connective tissue of primordial embryos osteogenic mode intramembranous ossification endochondral ossification
Growth of the craniofacial skeleton origin: supporting connective tissue of primordial embryos osteogenic mode ：intramembranous ossification endochondral ossification Craniofacial growth and development
Proportion changes of craniofacial growth and development Proportion changes volume ratio height ratio cranium face cranium face neonate 8 1 neonate 3 1 3y 2 1 y 5 1 13y 3 2 adult 2 1 adult 1 1
Company Logo Proportion changes Proportion changes of craniofacial growth and development volume ratio height ratio cranium face cranium face neonate 8 1 neonate 3 1 3y 2 1 6y 5 1 13y 3 2 adult 2 1 adult 1 1
Changes of craniofacial growth and development Cranium growth:1-2y rapidest development) 6y（about90%) Facial growth:1-2y 9-14y rapidest development) Ro 名0立416820
• Cranium growth：1-2y ( rapidest development) 6y ( about 90%) • Facial growth：1-2y，9-14y ( rapidest development) Changes of craniofacial growth and development