Title: FIXED ORTHODONTIC APPLIANCES
1FIXED ORTHODONTIC APPLIANCES
2Removable vs. Fixed Appliances
- REMOVABLE
- Tipping only
- No control over root movement
- Pts co-operation
- Hygienic
- FIXED
- Bodily translation
- Control of root movement
- Less dependent on pts co-op
- Less hygienic
3DEVELOPMENT OF FIXED ORTHODONTIC APPLIANCES
4Development of Fixed appliances
- Early fixed appliances
- Late 1800s
- Edward Angle
5EARLY FIXED APPLIANCES
6Development of Fixed appliances
- Standard Edgewise appliance
- Early 1900s
7Development of Fixed appliances
- Pre-adjusted edgewise appliance
- 1970s
- Refined manufacturing process with built-in
adjustments specific for each tooth - Advances in material sciences made attachment
much smaller
8BANDED APPLIANCES
9Bonding to Enamel
10Bonding Surface - Bracket Base
11BONDED APPLIANCES
12Lingual Appliance
13CERAMIC APPLIANCES
14Self Ligating Appliance
15PASSIVE FIXED APPLIANCES
16Components of the Fixed Appliance
- Bands
- Molar Tubes
- Brackets
- Buccal Tubes
- Arch Wires
- Auxiliaries Elastomeric products, Coil springs,
Lingual arches, Extra-oral appliances
17Posterior attachments
18Components of the Fixed Appliance
- Bands
- Molar Tubes
- Brackets
- Arch Wires
- Auxiliaries Elastomeric products, Coil springs,
Lingual arches, Extra-oral appliances
19Anterior Attachments
20Components of the Fixed Appliance
- Bands
- Molar Tubes
- Brackets
- Arch Wires
- Auxiliaries Elastomeric products, Coil springs,
Lingual arches, Extra-oral appliances
21ARCH WIRES
- Maxillary and mandibular
- Arch form described as parabolic shaped
- Size and cross-section of wires vary
- Material varies eg. Nickel Titanium alloy (NiTi),
Titanium Molybdenum Alloy (TMA), Stainless Steel
22Components of the Fixed Appliance
- Bands
- Molar Tubes
- Brackets
- Arch Wires
- Auxiliaries Elastomeric products, Coil springs,
Lingual arches, Extra-oral appliances
23Elastics
24EXTRA ORAL FORCES - HEAD GEAR
25Coil Spring
Closed or open coil springs
26Pre-Adjusted Edgewise Appliance or The Straight
Wire Appliance
- Larry Andrews - studied normal occlusion and
individual tooth positions - Developed prescriptions for individual tooth
position - Elements of ideal tooth position are built into
the appliance - Minimizing active wire manipulation - The
Straight Wire Concept
27Pre-adjusted edgewise appliance
- First order / in-out - Horizontal plane
- Second order / tip - Mesio-distal angulation
- Third order / torque - Labio-lingual angulation
- 3 - Dimensional control of tooth position
28First order or In-out
29Pre-adjusted edgewise appliance
- First order / in-out - Horizontal plane
- Second order / tip - Mesio-distal angulation
- Third order / torque - Labio-lingual angulation
30Second order or Tip
31Pre-adjusted edgewise appliance
- First order / in-out - Horizontal plane
- Second order / tip - Mesio-distal angulation
- Third order / torque - Labio-lingual angulation
32Third order or Torque
To Torque is the least efficient tooth movement
using orthodontic appliances
33Significance of accurate bracket/band positioning
- Precise tooth positioning
- Optimal effect of pre-adjustment
- Occlusion
- Esthetics
- Stability
34POSITIONING BRACKETS - GENERAL INSTRUCTIONS
Rhomboidal shape Disto-lingual wing mark Central
scribe line (long axis)
35Maxillary Central Incisors
4
36Maxillary Lateral Incisor
3.5
37Maxillary Cuspids
4.5 mm
38Maxillary Bicuspids
39Mandibular Incisors
40Mandibular Cuspid
41Mandibular Bicuspids
42Maxillary first molar bands
43Mandibular first molar bands
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