Flashcards
Headgear for Molar Distalization
Cards in this deck (10)
- 1List common tooth arch size problems (Handbook p.313)1. Crowding
2. Spacing
3. AP Problems
4. Vertical Problems
5. Transverse Problems - 21. For what type of case can headgear effectively be used for molar distalization? 2. What type of headgear should be used? 3. Why use these types of headgear?1. Average or low angle cases
2. Cervical or straight-pull headgear
3. Extrustion of Max. Molars--> Bite open - 31. In what types of cases should Cervical or straight-pull headgear should be avoided for molar distalization? 2. What alternative forms of headgear can be used in such instances?1. High angle cases
2. Occipital-pull or High-pull headgear (but distalization is more difficult) - 4How much force would be needed to achieve molar distalization?Bilateral force of at least 400g
- 5How long should be the headgear worn to achieve molar distalization?12-14 hrs/day
- 6How can the ACCO appliance facilitate molar distalization ? (when used alone or combination with headgear)Acrylic Cervical Occipital (ACCO) appliance components
1. Anterior bite plane - disooclude dentition
2. Palatal springs - gives 24hr light force
3. A labial bow over the incisors -embedded in an acrylic wraparound plate with Adams clasps on the first premolars - 7How is the transverse dimension of the arch affected during molar distalization?Arch expansion around molars - as molars move distally along the arch
Can be achieved by
1. Expanding the inner bow of the facebow
2. Using a expansion screw on a RA - 8How much distalization can be normally achieved?1/2 unit
- 9What are the main problems associated with headgear?1. Pt compliance
2. Dependence on favorable growth - 10What are the adverse effects of "non-compliance appliances" used for molar distalizationTipping of molars
Increase OJ (Due to anchorage loss)
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- Flashcards on Headgear for Molar Distalization, created by Nalaka Jayaratne on 10/07/2015.
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- Nalaka Jayaratne
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