DENT3060 Lecture Notes - Lecture 16: Cephalometry, Deciduous Teeth, Diastema
Document Summary
Nasal labial angle & labial mental fold (obtuse/average/acute) Cephalometric e line lips to e line. Majority of malocclusions due to variation of normal development. Small % malocclusions have clear cause: genetic, environment or both. Genetics tend to influence skeletal/dental pattern; environment influences tooth position. Growth centre: location at which independent (genetically controlled) growth occurs; also site. Growth site: location at which growth occurs; not always centres: e. g. cranial sutures: growth occurs in response to stimulus. Homeobox genes provide genetic blueprint for growth: gives rise to family resemblance, genes same in all animals. Psychological stress in emotionally deprived children inhibits release of gh. Functional matrix theory: growth of face occurs as response to functional needs, mediated by soft tissue in which jaws embedded. Still find normal occlusions in people whose facial parameters do not fall in normal/avg ranges. In broad terms skeletal type reflected in facial type/appearance. Assess individual in detail for clinically useful analysis to tailor tx to facial/skeletal peculiarities.
