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
Headgear is used for patients with class II or III skeletal deformities
II
What is the difference between cervical pull headgear and high pull headgear
- Cervical pull= Class II with deep bite
- High pull= Class II with open bite
Head gear should be worn for how long each day
12-14 hrs
Herbst appliance is for patients with class (II/III)
II (Class II with retrusive mandibles)
Function of the Herbst appliance is to
advance the lower jaw
Facemask is for patients with class (II/III) skeletal defects
III
Facemask corrects class III occlusion how
pulls the maxilla forward and reduces mandibular growth
Facemask is also called
reverse pull headgear
Facemask should be worn how many hours throughout the day
12-14 hrs
