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INDIAN DENTAL ACADEMY Leader in continuing dental education www.indiandentalacademy.com www.indiandentalacademy.com


Contents               

Brief summary Idea for introducing horizontal slot Single width bracket Twin bracket Tripple bracket Jarabak bracket Lewis bracket Lang bracket Steiner bracket Broussard bracket Bioefficient bracket Dual env bracket Unitwin bracket Transition from 022 to 018 slot Andrews straight wire app. www.indiandentalacademy.com


E.H ANGLE 

E arch appliance

Pin and tube appliance

Ribbon arch appliance

Open face or tie bracket

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Evolution of edgewise appliance ď Ž

1907 – angle discontinued the use of jack screws

E Arch

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Evolution of edgewise appliance

Basic E arch www.indiandentalacademy.com


Evolution of edgewise appliance

Ribbed E arch www.indiandentalacademy.com


Evolution of edgewise appliance

E arch without threaded ends www.indiandentalacademy.com


Evolution of edgewise appliance

E arch with hooks

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Evolution of edgewise appliance Pin and tube-1910

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Evolution of edgewise appliance

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Evolution of edgewise appliance The Ribbon Arch-1915

Brackets

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Evolution of edgewise appliance

Open face bracket www.indiandentalacademy.com


Evolution of edgewise appliance

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Single width bracket

050’’ or 1.25 mm www.indiandentalacademy.com


Siamese twin bracket

Swain Interbracket span 050’’

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Curved base twin bracket

Mechanism of action ďƒ  deflection www.indiandentalacademy.com


Posterior brackets 

Twice the width of single width bracket 010’’or 2.5mm

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Tripple bracket

Better rotational and tipping adjustments Control over rotation ďƒ  selective tying www.indiandentalacademy.com


Long edgewise bracket  

Horizontal and vertical slotted bracket Jarabak

Horizontal slot  .017’’ wide .038’’ deep Vertical slot  .017’’ wide .045’’ deep www.indiandentalacademy.com


Long edgewise bracket    

Available in 3 lengths .160’’ .120’’ distal .140’’

mesial Vertical slot on the base On distal end  www.indiandentalacademy.com .016×.016


Long edgewise bracket

Horizontal slot offcentred by .046’’ from the incisal edge

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Long edgewise bracket

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Lewis bracket

Soldered auxiliary rotation arms Single width feature- retained www.indiandentalacademy.com


Lewis bracket ď Ž

Types:

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Curved base lewis bracket

Increase contact with band . Reduces trapping of the food.

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Vertical slot Lewis bracket

020 x020 vertical slot www.indiandentalacademy.com


Steiner bracket ď Ž

Flexible rotation arms - did not rely entirely on the resiliency of archwire for tooth rotation.

ď Ž

Single width edgewise bracket

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Lang brackets

Howard Lang Single width bracket Flat rotational control wing

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Lang brackets

Wedge shape in profile Allows ease in lagation Prevents food lodgments

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Lang brackets Flattening of archwire curvature Incomplete seating of the wire.

Curvature maintained

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Broussard bracket

Grayford broussard Modified edgewise bracket in which there is addition of 0.0185 x 0.046 slot –to accept doubled 0.018 auxiliary wire www.indiandentalacademy.com


Unitwin bracket (1989)     

Thomas Creekmore Centered slot concept Single bracket Without tie wings Slot placed in the center of a .045’’twin bracket

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Unitwin bracket (1989) 

 

Utilizes the feature of both single and twin bracket Maximum inter bracket span  single width Rotational control  twin tie wings

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The Dual Enviroment Bracket  

George F. Schudy(1990) Design based on computer remodeling Large outer slot –.040’’for twin brackets and.030’’for single brackets. Smaller inner slot-.018/.016’’

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The Dual Enviroment Bracket 

Outer slot allows the use of full size . 016×.022 initial arch wire

Same wire seated in inner slot

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The Dual Enviroment Bracket ď Ž

Clinical advantage

1.

Faster leveling of the arches with fewer wire changes

2.

Easier torquing of the teeth

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Bioefficient brackets (1995) ď Ž

Anthony D.Viazis ďƒ  deltoid bracket Wide horizontal member but has a single width slot. Multifunctional bracket for bioefficient therapy

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Bioefficient brackets (1995) ď Ž

Maximum potential of any archwire is achieved when the largest possible wire is used.

1. Conformity to the crown anatomy and gingival outline.

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Bioefficient brackets (1995) 2. Ease in positioning due to the bracket design.

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Bioefficient brackets (1995)

Improper placement ďƒ  easily recognized www.indiandentalacademy.com


Bioefficient brackets (1995) 3. Minimum friction - Slot is elevated from the horizontal member. Area of contact bw the wire and the bracket is reduced

Better esthetics

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Bioefficient brackets (1995) 4. Tip control -horizontal

member has a twin bracket like effect.

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Bioefficient brackets (1995)

5. Better rotational control

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Transition from .022  .018 slot

022’’ or 0.55 mm wide 028’’ deep Gold archwires Late 1920s stainless steel Difference in the properties

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Transition from .022  .018 slot      

Reduce the size of the wire Reduce the slot width to .018’’ Smaller archwires were used 018×025’’ Force delivered was acceptable Introduction of TMA and NiTi Limitation of original 022 slot have been overcome

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Andrews straight wire appliance   

BRACKETS stand in between tooth and the orthodontist 1960 – concept of fully programmed appliance Advantage of FPA ELIMINATES WIRE BENDING

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Andrews ď Ž

Driving force for FPA

1.

Analysis of orthodontically treated final occlusion Analysis of naturally occurring optimal occlusion Six keys to normal occlusion

2. 3.

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Andrews

Andrews plane www.indiandentalacademy.com


Andrews

FACC FA point Angulation

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Andrews

Inclination

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Interarch relationship

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Crown angulation

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Crown inclination

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Crown inclination of posteriors

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Absence of rotations

Curve of spee

Tight contacts

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Andrews classification 1.

Non programmed appliance-a set of brackets designed the same for all tooth types ,relying totally on wire bending.

2.

Partly programmed appliance- a set of brackets designed with some in built features ,but always require some wire bending

3.

Fully programmed appliance- a set of brackets designed to guide teeth directly to their goal positions with unbent wires. www.indiandentalacademy.com


Features of Edgewise Bracket

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Non programmed bracket ď Ž

Angle’s edgewise app

FA point on FACC

All crowns will have equal facial prominences Extensive Wire bending www.indiandentalacademy.com


Non programmed bracket ď Ž

Design shortcomings

1. Bracket base perpendicular to bracket stem. 2. Bracket bases are not contoured. 3. Slots are not angulated 4. Bracket stem are of equal faciolingual thickness. 5. Maxillary molar offset is not built in. 6. Bracket siting techniques are unsatisfactory.

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Non programmed bracket 1.

Bracket base perpendicular to bracket stem.

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Non programmed bracket

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Non programmed bracket

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Non programmed bracket ď Ž

Bracket bases are not contoured occlusogingivally.

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Non programmed bracket

Greater than 2째 Greater than 0.5 mm

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Non programmed bracket

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Non programmed bracket

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Non programmed bracket

Mesio-distal base contour www.indiandentalacademy.com


Non programmed bracket ď Ž

Slots not angulated

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Non programmed bracket

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Non programmed bracket ď Ž

Bracket stem are of equal faciolingual thickness

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Non programmed bracket

Maxillary molar offset is not built in. www.indiandentalacademy.com


Non programmed bracket Bracket siting techniques are unsatisfactory. ď Ž

Wire bending Primary wire bends (1st, 2nd, 3rd order ) Secondary wire bends tertiary wire bends www.indiandentalacademy.com


Wire bending

angulation

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Wire bending

Occlusogingival slot positioning www.indiandentalacademy.com


Wire bending

Inclination www.indiandentalacademy.com


Wire bending

Prominence differences www.indiandentalacademy.com


Wire bending

Prominence differences www.indiandentalacademy.com


Wire bending

Total 76 bends

Fully programmed appliance www.indiandentalacademy.com


Fully programmed appliance ď Ž

Simplest version of FPA Standard brackets

One bracket for each tooth except for incisors and Maxillary molars Partly programmed app ďƒ  3 slot siting features www.indiandentalacademy.com


Fully programmed appliance ď Ž

Slot siting feature Feature 1Mid transverse planes of the slot, stem and crown must be the same.

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Fully programmed appliance ď Ž

Slot siting feature

Feature 2- Base of the bracket for each tooth type must have same inclination as the facial plane of the crown. www.indiandentalacademy.com


Fully programmed appliance ď Ž

Slot siting feature

Feature 3- Each bracket inclined base must be contoured occluso gingivally www.indiandentalacademy.com


Fully programmed appliance ď Ž

Slot siting feature

Feature 4- Mid sagittal plane of the slot, stem and crown must be same. www.indiandentalacademy.com


Fully programmed appliance ď Ž

Slot siting feature

Feature 5 -The plane of the bracket base at its base point must be identical to the facial plane of the crown at the FA point www.indiandentalacademy.com


Fully programmed appliance ď Ž

Slot siting feature

Feature 6 - Mesio distal curvature of base should match tooth.

the m-d contour of the www.indiandentalacademy.com


Fully programmed appliance ď Ž

Slot siting feature

Feature 7 - The vertical components should be parallel to one another The horizontal components should be equidistant from the gingiva and the cusp tips.

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Fully programmed appliance ď Ž

Slot siting feature

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Fully programmed appliance ď Ž

Slot siting feature

Feature 8 – All slots point must have same distance between them and the crown embrasure line.

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Fully programmed appliance Convenience feature-

1. The gingival tie wings of the posterior Brackets extend farther laterally . www.indiandentalacademy.com


Fully programmed appliance Convenience feature-

2. Bases are inclined . www.indiandentalacademy.com


Fully programmed appliance Convenience feature-

3. Facial surface of the incisor and canine brackets are designed to parallel their bases - lip comfort. www.indiandentalacademy.com


Fully programmed appliance Convenience feature-

4. In mandibular incisor brackets, the tie wings are designed with least amount occlusofacial prominence 5.Bracket identification. www.indiandentalacademy.com


Fully programmed appliance Auxiliary feature – - Power arms - Hooks - Face bow tubes - Utility tubes - Rotational wings

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Fully programmed appliance 

Incisor bracket

3 brackets with different base inclinations

Post treatment interjaw relationship can be predicted

Unpublished study (1968) on hundred cephs

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Fully programmed appliance Incisor bracket

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Fully programmed appliance Incisor bracket

Cl II

Cl I

Cl III www.indiandentalacademy.com


Fully programmed appliance Incisor bracket

Cl II

Cl I

Cl III www.indiandentalacademy.com


Angulation for central and lateral incisorsTooth

Central

Lateral

Maxillary

5

9

Mandibular

2

2

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Fully programmed appliance ď Ž

Posterior bracket

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Tooth

II molar

I Molar

II PM

I PM

Canine

Maxillary

5/-9 (10o offset)

5/-9 (10o offset)

2/-7

2/-7

11/-7

Mandibul ar

2/-35

2/-30

2/-22

2/-17

5/-11

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Inclination and angulation for 6-7 to finish in class II Tip reduced and offset removed

Tooth

II Molar

I Molar

Maxillary

0/-9

0/-9

Mandibular

-

-

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Fully programmed Translation brackets  

 

Bodily movement of the teeth is required What is translation??? Translation problems Need for over correction

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Fully programmed Translation brackets ďƒ˜

They have all the qualities of the standard brackets plus few other feature . Power arm Counter mesiodistal tip Counter rotation Counter buccolingual tip

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Fully programmed Translation brackets Minimum translation bracket – requiring a translation of 2 mm or less Medium translation brackets – requiring a translation of more than 2mm but less than 4 mm Maximum translation brackets -requiring a translation of more than 4 mm.

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Fully programmed Translation brackets ď Ž

Translation solutions-

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Fully programmed Translation brackets ď Ž

Concept regarding Levers

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Fully programmed Translation brackets ď Ž

Lever common to all edgewise brackets

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Fully programmed Translation brackets Counter rotation

The slot is rotated in the direction of translation Slot rotation plus mesiodistal slot length plus archwire flex equals counterrotation and rotation overcorrection. www.indiandentalacademy.com


Fully programmed Translation brackets ď Ž

Countermesiodistal tip

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Fully programmed Translation brackets

Slot angulation plus mesiodistal slot length plus power arm length plus activated archwire equals Countermesiodistal tip and angulation overcorrection. www.indiandentalacademy.com


Fully programmed Translation brackets Counterbuccolingual tip

Base inclination + faciolingual slot length + arch wire deflection = Counterbuccolingual tip www.indiandentalacademy.com


Thank you For more details please visit www.indiandentalacademy.com

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