SpeakerDr. Jeong-il Kim
Lectures 18
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6. Non-extraction Treatment (Part 2)

This lecture is about explanations, instructions, and the case discussion of the various devices that  

can be used in non-extraction treatment. It also explains indications, usage, and precautions of 

TPA and lingual arch to maintain Leeway space.

It is not easy to move teeth in non-extraction treatment due to tight occlusion, 

which can cause a labial inclination of anterior teeth. Therefore, it is sometimes necessary to 

facilitate the tooth movement while eliminating the occlusal force. Then, the vertical dimension, 

and occlusal plane can be adjusted by using composite resin bonding, anterior bite plate, 

posterior bite block, twin block appliance, etc. 

Indications and instructions of these appliances are explained. In addition, there are lectures and 

discussions about expansion appliances, head gear, double arch wires, mini screws, etc.

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1. Arch Length Preservation: TPA (Part 1) 1) Solutions to arch length discrepancy
2) Arch length preservation
3) Transpalatal arch: Types, design, and clinical application
2. Transpalatal Arch (Part 2) 1) Indications of TPA
3. Arch Length Preservation: Lingual Arch (Part 1) 1) Mandibular arch length preservation
2) Early mesial drift vs late mesial drift
3) Design of lingual arch
4. Lingual Arch (Part 2) 1) Indications of lingual arch
5. Elimination of Occlusal Force (Part 1): Non-extraction 1) Potential problems caused by contact between appliance and antagonist tooth
2) Indications for eliminating the occlusal force
3) Blue resin, anterior bite plate, posterior bite block and twin block appliance
6. Expansion Appliances (Part 1): Introduction 1) Transverse problem and malocclusion
2) Diagnostic methods for narrow upper arch
3) Classification according to posterior cross-bite and narrow upper arch, and their treatment methods
7. Expansion Appliances (Part 2): Expansion Appliances 1) Types of expansion devices
2) Rapid maxillary expansion vs. Slow maxillary expansion
8. Expansion Appliances (Part 3): Advantages and Disadvantages 1) Advantages and disadvantages of expansion devices
2) Prevention of disadvantages
9. Expansion Appliances (Part 4): Case 1 1) Patient: Male adult
2) C.C.: Anterior crowding
3) Treatment: 3rd molar extraction and expansion appliance
10. Twin Block Appliances (Part 1): Introduction 1) Functional appliance
2) Low vertical dimension and Class II malocclusion
3) Construction bite registration
4) Types of twin block appliance
11. Twin Block Appliances (Part 2): Fixed Appliance after Twin Block Appliance 1) Advantages and disadvantages of twin block appliance
2) Fixed appliance after twin block appliance
3) Retrusive control after twin block appliance
12. Twin Block Appliances (Part 3): Case 1 1) Patient: Male adolescent
2) C.C.: Protrusive lips
3) Treatment: Non-extraction treatment and twin block appliance
13. Headgear (Part 1): Introduction 1) Types of Headgear and corresponding tooth movement
2) The reason why High pull headgear is not used
3) Cervical headgear
4) Class II differential diagnosis
14. Headgear (Part 2): Fabrication and Adjustment 1) Cervical headgear: Fabrication and clinical application
2) Cases
3) Indications of cervical headgear
15. Double Archwires (DAW) (Part 1): Introduction 1) Intrusion arch
2) Indications of Intrusion arch and differential diagnosis
3) Principle of Intrusion
4) Difference of intrusion by Mini screw vs. Double arch wires
16. Double Archwires (DAW) (Part 2): Fabrication and Adjustment 1) Double arch wires (DAW): Fabrication, clinical application, and adjustment
17. Double Archwires (DAW) (Part 3): Case 1 1) Patient: Female adolescent
2) C.C.: Gummy smile and deep overbite
3) Treatment: Non-extraction treatment and double arch wires
18. Mini Screws: Case 1 1) Patient: Male adult
2) C.C.: Anterior crowding
3) Treatment: 3rd molar extraction and mini screws
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