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FIXED ORTHODONTIC APPLIANCES

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FIXED ORTHODONTIC APPLIANCES DENT 657 Removable vs. Fixed Appliances REMOVABLE Tipping only No control over root movement Pt s co-operation Hygienic FIXED Bodily ... – PowerPoint PPT presentation

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Title: FIXED ORTHODONTIC APPLIANCES


1
FIXED ORTHODONTIC APPLIANCES
  • DENT 657

2
Removable 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

3
DEVELOPMENT OF FIXED ORTHODONTIC APPLIANCES
4
Development of Fixed appliances
  • Early fixed appliances
  • Late 1800s
  • Edward Angle

5
EARLY FIXED APPLIANCES
6
Development of Fixed appliances
  • Standard Edgewise appliance
  • Early 1900s

7
Development 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

8
BANDED APPLIANCES
9
Bonding to Enamel
10
Bonding Surface - Bracket Base
11
BONDED APPLIANCES
12
Lingual Appliance
13
CERAMIC APPLIANCES
14
Self Ligating Appliance
15
PASSIVE FIXED APPLIANCES
16
Components of the Fixed Appliance
  • Bands
  • Molar Tubes
  • Brackets
  • Buccal Tubes
  • Arch Wires
  • Auxiliaries Elastomeric products, Coil springs,
    Lingual arches, Extra-oral appliances

17
Posterior attachments
  • MOLAR TUBES

18
Components of the Fixed Appliance
  • Bands
  • Molar Tubes
  • Brackets
  • Arch Wires
  • Auxiliaries Elastomeric products, Coil springs,
    Lingual arches, Extra-oral appliances

19
Anterior Attachments
  • Brackets

20
Components of the Fixed Appliance
  • Bands
  • Molar Tubes
  • Brackets
  • Arch Wires
  • Auxiliaries Elastomeric products, Coil springs,
    Lingual arches, Extra-oral appliances

21
ARCH 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

22
Components of the Fixed Appliance
  • Bands
  • Molar Tubes
  • Brackets
  • Arch Wires
  • Auxiliaries Elastomeric products, Coil springs,
    Lingual arches, Extra-oral appliances

23
Elastics
24
EXTRA ORAL FORCES - HEAD GEAR
25
Coil Spring
Closed or open coil springs
26
Pre-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

27
Pre-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

28
First order or In-out
29
Pre-adjusted edgewise appliance
  • First order / in-out - Horizontal plane
  • Second order / tip - Mesio-distal angulation
  • Third order / torque - Labio-lingual angulation

30
Second order or Tip
31
Pre-adjusted edgewise appliance
  • First order / in-out - Horizontal plane
  • Second order / tip - Mesio-distal angulation
  • Third order / torque - Labio-lingual angulation

32
Third order or Torque
To Torque is the least efficient tooth movement
using orthodontic appliances
33
Significance of accurate bracket/band positioning
  • Precise tooth positioning
  • Optimal effect of pre-adjustment
  • Occlusion
  • Esthetics
  • Stability

34
POSITIONING BRACKETS - GENERAL INSTRUCTIONS
Rhomboidal shape Disto-lingual wing mark Central
scribe line (long axis)
35
Maxillary Central Incisors
4
36
Maxillary Lateral Incisor
3.5
37
Maxillary Cuspids
4.5 mm
38
Maxillary Bicuspids
39
Mandibular Incisors
40
Mandibular Cuspid
41
Mandibular Bicuspids
42
Maxillary first molar bands
43
Mandibular first molar bands
44
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45
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