Lecture make up Flashcards
What are MAL etiologies
- genetics
- systemic influences
- local influences
What is a class 0 occlusion
normal occlusion
scissor bite where upper maxillary incisors overlap lower
lowe rcanines positioned between upper 3rd incosrs and upper canine
What is class 1 malocclusion
skeletal length NORMAL
abnormal tooth angulations
What is class 2 malocclusion
overbite
mandibular brachygnathism
maxillary prognathism
What is class 3 malocclusion
underbite
What is class 4 malocclusion
wry bite
mesiodistolcusion
one of 4 quadrants located mesial or distal to counterparts
if not trauma then is genetic and don’t breed
What is wolff’s law of bone transformation
pressure bone resorption
tension–bone formation
What are pros and cons of removable appliances
pro-good oral hyigene, repairs easy
con–bulky, can interfere with normal occlusion, remove, swallow, chew
What are pros and cons of fixed appliances?
pro–better security, less bulky, greater precision ggentleness
con–poor oral hygiene, repairs difficult
What are treatable conditions?
- rotation
- extrusion
- anterior cross bites
- posterior cross bites
- inguoversion of MN canines (base narrow canines
- labioversion of MX canines (lanced)
- distoversion of MX canines
- calss II and class III malocclusions (permanent, deciduous)
What are developmental disorders of teeth?
- varied number: anodontia rare, hypodontia common, supernumerary-inherited/developmental
- altered shape–gemination # teeth normal, fusion fewer #
- dilaceration
- supernumary roots
- structural enamel defects (environmental, amelogenesis imperfecta)
Why do you need to take radiographs before saying the dog has hypodontia?
because it could be below the surface (impacted or broken off)
What are eruption and shedding disorders?
- persistent deciduous teeth–take out sooner rather than later
