Theories of craniofacial growth- Final Flashcards
In orthodontics they feel that by changing the environment/manipulating the growth patterns, they are positively influencing the:
epigenetic patterns of genes
The concept of the genes that you express or don’t express and to what degree:
epigenetics
Epigenetic are considered very:
unpredictable
In orthodontics they feel that by changing the environment/manipulating the growth patterns, they are positively influencing the epigenetic patterns of genes resulting in:
correction of malocclusion
The lower incisors and upper incisors DO meet with w/ 25% overbite and they are in balance:
incerincisal cupping
For the male patient seen with 12mm of overjet (full class II malocclusion), the treatment required:
orthognathic surgery
Although the man who required orthognathic surgery son came in with the same genetics as his father (and some from his mother), what treatment was decided and why?
A functional appliance to reposition the lower jaw forward (avoiding surgery) due to young age and not being done with growth
What was the hope with treating the boy with a functional appliance?
we hope to have a 50% U and L correction of vertical dimension and that the dental alveolar processes respond to this new position
The growth theory of proffitt=
Equilibrium
Theory that states, not only should you make inferences from the hard tissue but also consider the balance of forces that keep the jaws in their position & the duration of force is more important than the magnitude:
Equilibrium theory of proffitt
The Equilibrium Theory of Proffitt states that in addition to looking at the hard tissues, you should also consider: (2)
- balance of forces keep the teeth and Jaws in their position
- duration of force more important than magnitude
The Equilibrium Theory of Proffitt states that the ___ of force is more important than the ___
duration; magnitude
The Equilibrium Theory of Proffitt states that the balance of ____ keeps the teeth and jaws in their position
forces
The Equilibrium Theory of Proffitt considers the balance of what muscles:
- muscles of mastication
- lingual muscles
- orofacial muscles
What does the The Equilibrium Theory of Proffitt state should be in balance?
- bone
- soft tissue
- pharynx/nasal cavity/airway
means that the function requirements (breathing, eating, mastication, etc.) is very relevant to the development of your craniofacial complex:
functional matrix
The theory of functional matrix reverse the theory that:
the theory that that we first have bone, bone grows, and tissues accomodate
Functional matrix theory considers the balance between:
cheek pressure & tongue posture
What positions does the tongue push on the teeth?
- AP position
- transverse position
(does NOT have massive influence on the vertical dimension)
Discuss the relationship between bone growth and soft tissues portrayed by the functional matrix theory:
Bone growth <—->soft tissue accomodation (we just don’t know to what degree)
Orthodontics has the capacity to influence growth thanks to:
functional matrix
Mouth breathing and sleep apnea may be due to:
anterior open bite
Enhancing dental alveolar growth has an influence on the ___ but we do not know to what degree:
muscles
Malocclusion that is 100% related to functional alterations
open bite
