Occlusion and Malocclusion - Aetiology of Malocclusion
5 important questions on Occlusion and Malocclusion - Aetiology of Malocclusion
Genetically, what is development of a palatally impacted canine associated with?
Aetiology of Malocclusion - Soft Tissue
Digit sucking
Lip habit
Tongue habit
Frenum
Pathology, e.g. Scarring
Natural ageing process
General, e.g:
Genetic - homeobox genes
Lip morphology
Respiration
Pathology, e.g. CLP, trauma
Aetiology of Malocclusion - broad
5% of malocclusions have an identifiable cause
Genetics tend to influence skeletal pattern
Environment influences tooth position
Both contribute to creating malocclusion
Genetic - skeletal pattern, some syndromes e.g. Muscular dystrophy, evolutionary trend to reduced jaw size and tooth number, hypodontia/tooth morphology
Environmental - Soft tissues, habits, local factors, pathology, trauma, respiration
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Aetiology of Malocclusion - Skeletal
Alveolar insufficiency
General, e.g:
Genetics - cranial base length
Saddle angle
Pathology, e.g:
Trauma
Head and neck syndromes
Aetiology of Malocclusion - Dental
Tooth number/size/shape
Ectopic position
Early/delayed loss
General, e.g:
Tooth size
Extensive hypo/hyperdontia
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