intro lecture Flashcards
What is Orthodontics?
- Diagnosis and treatment of misaligned jaws and teeth.
What are the goals of orthodontics? (form/function)
Form- Esthetics:
* Smile design
* Facial harmony
* Symmetry
* Psychological well being
Function:
* Optimize occlusion
* Best possible masticatory function
* Breathing
* Speech
Occlusal function enhancement: what must be established/ corrected?
- Establish harmonious occlusal relationship in the three planes of space
- Establish anterior coupling
- Correct Antero posterior and vertical discrepancies
- Establish or normalized the transverse dimension
how is ortho an Interdisciplinary care?
steps?
- Involves several specialties of dentistry
- Requires careful panning
- Start with the end in mind
- Result is dependent on the team proficiency and the patient motivation
Dr. Angle’s Definition of the Correct
occlusion and Tooth Position
Class 1
- Based on the relationship of the upper and lower first permanent molars in the AP dimension.
- “ The mesiobuccal cusp of the
upper first permanent molar is
in occlusion with the buccal
groove of the lower first molar
and a full complement of teeth
is present ”. (second half not true)
- Class ___ malocclusions are the most frequent malocclusions
% affected
1,
* And are present in 70% of the population.
more common maloclusions in practice populations
2 and 3
what causes 90% class I malocclusions
man not set far enough forward
malocclusions and spatial deminisions
Malocclusions are present in
the three dimensions of space ( even the fourth one: time)
Class II
The upper first permanent molar is positioned mesially in relation to the lower first permanent molar.
Class III
- The upper first permanent
molar is positioned distally in
relation to the lower first
permanent molar.
Role of orthodontics in oral health
- Esthetic: Improve quality of life by improving facial appearance.
- Functional ( Occlusal level) : QOL by improving function and mastication
- Functional: ( Sleep Apnea) :QOL improvement by improving breathing and sleep – Multidisciplinary approach
- Functional: Temporo mandibular care- Applicable to a small group of patients ( 10%)
how should ortho tx start
look at facial form before teeth
sleep apnea correlations
US: obesity
elsewhere: may be due to craniofacial forms/genetics
can there be good esthetics and bad function?
yes