5. Dx and Tx plan Flashcards
In what dimension can you see if someone has lingual crossbite, buccal crossbite (dentoalveolar) (vertical/transverse/sagital)
transverse
In what dimension can you see if someone has and open bite or deep bite (vertical/transverse/sagital)
Vertical
In what dimension can you see if someone has angles class I, II, or III classification (vertical/transverse/sagital)
sagital
what is a skeletal lingual crossbite and a skeletal buccal crossbite
- Lingual= upper arch is narrower than the lower
- Buccal= Upper arch is wider than the lower
What cephalometric points tell you the relationship of the maxilla to the mandible
ANB
ANB angle
- Class I
- Class II
- Class III
- Class I= 2 degrees
- Class II= >2 degrees
- Class III = <2 degrees
The S line is drawn from
midway of columella of lip to the chin
E line is drawn from
Tip of nose to chin
Distance from the S line to…
- Upper lip
- Lower lip
Both are 0 mm
Distances from E-line to
- Upper lip
- Lower lip
- Upper lip= -4 mm
- Lower lip = -2 mm
Difference between space required and space available
Space required= MD width of all the teeth mesial to the second permanent molars
Space available= Segments of dental arch are divided into straight lines and measured including the first permenant molars
When the Patient has a class I skeletal relationship and flared incisors what is the treatment of choice for most cases
- Extract the first PMs
- Expansion is contraindicated
When the Patient has a class I skeletal relationship and retruded incisors what is the treatment of choice for most cases
- Expansion
- Extraction is contraindicated
What is the difference between orthopedic and orthognathic treatment
orthopedic= patient is still growth orthognathic= patient is non-growing (adult)
Does the headgear move the maxilla or the mandible? And in what direction?
Maxilla- moves the maxilla distally
