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

www.indiandentalacademy.com
LABIAL BOWS
• Labial bow is an essential component of
removable orthodontic appliances

• It can be either active or passi...
• The principal function of the bow is to

retrude the anterior teeth
• It can be used for retentive purposes

www.indiand...
Parts of labial bow
•
•
•
•

The incisor segment
Vertical loops
The occlusal or cross
over section
The retentive ends

www...
Placement of the incisor segment
• Active bow

placed at the junction of incisal and
middle third

• 0.6 or 0.7 mm SS Wire...
• Retentive or passive bow

placed at the junction of cervical and
middle third or below the height of
contour

• 0.9 or 1...
Types
•
•
•
•
•
•
•
•
•

Short labial bow
Long labial bow
Roberts retractor
Reverse labial bow
Begg’s labial bow
Mills ret...
Short labial bow
Indications
• Retraction of anteriors
• Anterior spacing with proclination
• Overjet reduction
There shou...
• 0.7mm wire used
• Fabrication:- labial segment of wire is

placed at the junction of the incisal and
middle third.

www....
Vertical segment starts from mesial third of canine,
should be perpendicular to the incisor segment &
should be away from ...
Retentive ends adapted on the lingual or palatal
side.
Activation - Compressing the U-loop by 1mm

www.indiandentalacademy...
Long labial bow
Indications
• Anterior space closure
• Overjet reduction
• Closure of the space distal to the canine
• As ...
•
•
•

0.7 mm wire used in active purpose
0.9 mm wire used in passive purpose
Fabrication - same as short labial bow but
o...
Roberts retractor
• It was first designed by G.H Robert
• Indication

it is suitable only for retraction of four
incisors ...
• This is a flexible bow which is constructed
from 0.5 or 0.6 mm wire inserted into a
stainless steel tubing to give suppo...
• Fabrication

Labial segment of wire is placed at the junction of
the incisal and middle third
Extends only two thirds of...
• It is activated by closing the coil or giving palatal
bend at the emergence of the coil

www.indiandentalacademy.com
Reverse labial bow
• Indication

For retaining tooth positions
For minor tooth movements

www.indiandentalacademy.com
• 0.7 mm wire used
• Fabrication:-loops are placed distal to

the canine and the free ends of the Uloops are adapted occlu...
• This is too stiff for effective incisor retraction
• The stability ratio is poor

Activation
First the U-loop is opened ...
Begg’s labial bow

(Wrap Around / Around the Globe Bow)
• Popularized by P.R . Begg
• It is used as retainer after fixed o...
• Fabrication

consists of labial wire that extends till the last
erupted molar
U-loop is incorporated at the pre molar an...
• Advantage of this bow is that there is no

cross- over wire between the canine and
premolar there by eliminating the ris...
Mills retractor
• It is also called extended labial bow
• Indication
Large overjet
For alignment of irregular incisors

ww...
• 0.7 mm wire is used
• This labial bow has an extensive looping of the
•
•

wire so as to increase the flexibility and ra...
Fitted labial bow
• Used to secure the incisors firmly after they been
•
•
•

rotated
It acts as retainer
It is not used i...
High labial bow with apron spring
•
•
•
•
•

Used in retraction of one or more teeth
Large overjet
It is very similar to a...
• Fabrication

A heavy base arch of 0.9mm to 1mm wire extends
into the buccal sulcus
apron spring made of 0.4mm wire is at...
• Activation

It is activated by bending the upright arms of the
apron springs towards the teeth
3mm activation at a time
...
Split labial bow
• Used for anterior
•

retraction
Closer of midline
diastema

www.indiandentalacademy.com
Other bows
• Protrusion bow
• Palatal arch with central U-loop

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

www.indiandentalacademy.com
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Bows /certified fixed orthodontic courses by Indian dental academy

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The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and offering a wide range of dental certified courses in different formats.

Indian dental academy provides dental crown & Bridge,rotary endodontics,fixed orthodontics,
Dental implants courses.for details pls visit www.indiandentalacademy.com ,or call
0091-9248678078

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Bows /certified fixed orthodontic courses by Indian dental academy

  1. 1. BOW S INDIAN DENTAL ACADEMY Leader in continuing dental education www.indiandentalacademy.com www.indiandentalacademy.com
  2. 2. LABIAL BOWS • Labial bow is an essential component of removable orthodontic appliances • It can be either active or passive www.indiandentalacademy.com
  3. 3. • The principal function of the bow is to retrude the anterior teeth • It can be used for retentive purposes www.indiandentalacademy.com
  4. 4. Parts of labial bow • • • • The incisor segment Vertical loops The occlusal or cross over section The retentive ends www.indiandentalacademy.com
  5. 5. Placement of the incisor segment • Active bow placed at the junction of incisal and middle third • 0.6 or 0.7 mm SS Wire used www.indiandentalacademy.com
  6. 6. • Retentive or passive bow placed at the junction of cervical and middle third or below the height of contour • 0.9 or 1 mm SS Wire used www.indiandentalacademy.com
  7. 7. Types • • • • • • • • • Short labial bow Long labial bow Roberts retractor Reverse labial bow Begg’s labial bow Mills retractor Fitted labial bow High labial bow with apron springs Split labial bow www.indiandentalacademy.com
  8. 8. Short labial bow Indications • Retraction of anteriors • Anterior spacing with proclination • Overjet reduction There should be good contact between canine and premolar www.indiandentalacademy.com
  9. 9. • 0.7mm wire used • Fabrication:- labial segment of wire is placed at the junction of the incisal and middle third. www.indiandentalacademy.com
  10. 10. Vertical segment starts from mesial third of canine, should be perpendicular to the incisor segment & should be away from gingiva Occlusally, it passes between canine and premolar www.indiandentalacademy.com
  11. 11. Retentive ends adapted on the lingual or palatal side. Activation - Compressing the U-loop by 1mm www.indiandentalacademy.com
  12. 12. Long labial bow Indications • Anterior space closure • Overjet reduction • Closure of the space distal to the canine • As a retaining device at the end of fixed therapy • Guidance of canine during canine retraction using palatal retractor www.indiandentalacademy.com
  13. 13. • • • 0.7 mm wire used in active purpose 0.9 mm wire used in passive purpose Fabrication - same as short labial bow but occlusal wire passes between two premolars • Activated by compressing the U-loop www.indiandentalacademy.com
  14. 14. Roberts retractor • It was first designed by G.H Robert • Indication it is suitable only for retraction of four incisors following retraction of canines www.indiandentalacademy.com
  15. 15. • This is a flexible bow which is constructed from 0.5 or 0.6 mm wire inserted into a stainless steel tubing to give support to either end of the bow www.indiandentalacademy.com
  16. 16. • Fabrication Labial segment of wire is placed at the junction of the incisal and middle third Extends only two thirds of the mesiodistal width of the lateral incisors A coil of 3mm internal diameter placed mesial to canine Distal part is supported in a stainless steel tubing www.indiandentalacademy.com
  17. 17. • It is activated by closing the coil or giving palatal bend at the emergence of the coil www.indiandentalacademy.com
  18. 18. Reverse labial bow • Indication For retaining tooth positions For minor tooth movements www.indiandentalacademy.com
  19. 19. • 0.7 mm wire used • Fabrication:-loops are placed distal to the canine and the free ends of the Uloops are adapted occlusally between the premolar and canine www.indiandentalacademy.com
  20. 20. • This is too stiff for effective incisor retraction • The stability ratio is poor Activation First the U-loop is opened this results in lowering of the labial bow in the incisor region . A compensatory bend is given at the base of the loop www.indiandentalacademy.com
  21. 21. Begg’s labial bow (Wrap Around / Around the Globe Bow) • Popularized by P.R . Begg • It is used as retainer after fixed orthodontic therapy • 0.9 mm wire is used www.indiandentalacademy.com
  22. 22. • Fabrication consists of labial wire that extends till the last erupted molar U-loop is incorporated at the pre molar and molar area to close the band spaces www.indiandentalacademy.com
  23. 23. • Advantage of this bow is that there is no cross- over wire between the canine and premolar there by eliminating the risk of space opening up www.indiandentalacademy.com
  24. 24. Mills retractor • It is also called extended labial bow • Indication Large overjet For alignment of irregular incisors www.indiandentalacademy.com
  25. 25. • 0.7 mm wire is used • This labial bow has an extensive looping of the • • wire so as to increase the flexibility and range of action Poor patient acceptance Complex design www.indiandentalacademy.com
  26. 26. Fitted labial bow • Used to secure the incisors firmly after they been • • • rotated It acts as retainer It is not used in active tooth movement 0.7 mm wire is used www.indiandentalacademy.com
  27. 27. High labial bow with apron spring • • • • • Used in retraction of one or more teeth Large overjet It is very similar to a Roberts retractor Highly flexible Light force www.indiandentalacademy.com
  28. 28. • Fabrication A heavy base arch of 0.9mm to 1mm wire extends into the buccal sulcus apron spring made of 0.4mm wire is attached to the high labial bow www.indiandentalacademy.com
  29. 29. • Activation It is activated by bending the upright arms of the apron springs towards the teeth 3mm activation at a time Disadvantages are difficulty in construction and soft tissue injury www.indiandentalacademy.com
  30. 30. Split labial bow • Used for anterior • retraction Closer of midline diastema www.indiandentalacademy.com
  31. 31. Other bows • Protrusion bow • Palatal arch with central U-loop www.indiandentalacademy.com
  32. 32. Thank you For more details please visit www.indiandentalacademy.com www.indiandentalacademy.com

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