Ortho: Mental dental Flashcards
(59 cards)
Caused by exposure to high levels of ethanol during early development
CNS problems
Midface deficiency
Cleft lip
( Anomaly Occurs in germ layer formation stage)
Fetal Alcohol Sydrome
Genetic mutation that affects development of facial bones and tissues
Underdeveloped mand
Downslanted palpebral fissures
Cleft palate
Microtia (small ear)
(Anomolay occurs in migration of neural crest cells stage)
Treacher collins
Loss of neural crest cells during migration
Ear and mand ramus are deficient on affected side
(Anomaly occurs in migration of neural crest cells stage)
Hemifacial microsomia
Nondisjunction that leads to an extra chromosome 21
Midface deficiency
Upslanted palpebral fissures
No increased caries risk
INcreased periodontal ds risk
Down Syndrome (Trisomy 21)
What ortho classification do cleft lip and palate typically end up?
Class 3
What prominences fail to fuse in cleft lip?
Median nasal process and maxillary process
What weeks in utero does cleft lip occur?
4-6 weeks
What weeks in utero does cleft palate occur?
6-8 weeks
What prominences fail to fuse in cleft palate?
Palatal shelves
Micrognathia (small mand)
Glossoptosis: backward placement of tongue
Cleft palate
Breathing and feeding difficulty
Pierre robin sequence
______ group of anomalies that generally stem from a single major anomaly that alters the development of surrounding structures
Sequence
_____ pattern of anomalies that occur together in a predictable fashion due to single etiology
Syndrome
Craniosynostosis: earlly closer of skull sutures
Bradycephalic
Midface deficiency
Frontal bossing
Hypertelorism
Proptosis
(Anomaly occurs in final differentiation of tissues stage)
Crouzon Syndrome
Craniosynostosis
Similar to Crouzon
Acrocephalic (tall skull)
Byzantine arch: narrow palate with high vault
Syndactyly: fusion of fingers and toes
Apert syndrome (acrocephalosyndactyly)
___ syndromes
Buildup of glycosaminoglycans due to an enzyme deficiency
Hurler and Hunter syndrome
___ stage of occlusion development
From birth to 6 months ending with eruption of first primary tooth
Future position of teeth can be observed by elevations and grooves present on alveolar ridges
Gum pad stage
___ stage of occlusion development
From 6 montsh to 6 years ending with first permanent tooth
Young children often have minimal overbite and overjet
Primary dentition stage
Does mand or max gain more space due to LEeway space?
Mand
___ stage of occlusion development
6-12 years ending with exfoliation of last primary tooth
Interdental, primate, and leeway spaces close
Molar relationship will “transition” to class 1, 2 or 3
Mixed dentition stage
What teeth have a diastema in the “ugly duckling” stage?
Central incisors
What teeth close the diastema in the “ugly duckling” stage due to their eruption?
Max canines
How can flush terminal plane end up in class 1 instead of cusp to cusp?
Mesial shift when 1st molars shift mesially or differential jaw growth
The early mesial shift closes what space?
Primate space (E)
The late mesial shift closses what space?
Leeway space (L)
