Lec 6: Facial Profile Flashcards
- Helps in diagnosing gross deviation in the maxillomandibular relationship.
- Viewed from the side.
- By joining two reference lines
Facial profile
It is the line joining the forehead (glabella) to the soft tissue Point A.
First reference line
It is the line joining the Point A to the Pogonion.
Second reference line
3 types of facial profile
- Straight / orthognathic
- Convex
- Concave
Influenced by the ethnicity and racial background.
Defined as the anterior or posterior inclination of the mandible relative to the forehead.
Facial divergence
A line drawn from the forehead to the chin is straight.
Straight/orthognathic facial divergence
A line drawn from the forehead to the chin is inclined anteriorly.
Anterior facial divergence
A line drawn from the forehead to the chin is inclined posteriorly.
Posterior facial divergence
The anteroposterior (sagittal) jaw relationship is assessed by?
Two finger test
The vertical skeletal relationship is assessed by?
Measuring FMA angle
Maxillary skeletal base is ______ to the mandibular skeletal base.
2-3mm anterior
Index finger is slightly ahead of the middle finger.
Class II skeletal base pattern
Middle finger is ahead of the index finger.
Class III skeletal base pattern
In an ideal skeletal relationship, the distance between ____ and _______ is equal to the distance between ______ and _____.
- glabella; subnasale
- subnasale; underside of the chin
Two reference planes in defining FMA angle?
Frankfort Horizontal plane
Mandibular plane
