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

www.indiandentalacademy.com
REM AB
OV
LE
APPLI AN
CES
www.indiandentalacademy.com
DEFI NI TI O
N
www.indiandentalacademy.com
REM
OVABLE APPLI ANCE
• REMOVABLE APPLIANCE ARE
ORTHODONTIC
DEVICES
WHICH CAN BE TAKEN OUT BY
THE PATIENT FOR CLEANING
AND...
H STORY
I
www.indiandentalacademy.com
VI CTOR H
UGO JACKSON
• Early 20th century
• United States
• Appliances of vulcanite base
with a precious metal or
nickel-...
GEORGE CROZAT
• Early 1900’s
completely
of
• Appliance
precious metal.
• Had a clasp on molars and
finger springs on anter...
countries
• European
removable appliances.
States
fixed
• United
appliances.

www.indiandentalacademy.com
Reas ons f or i nc r eas ed
us e of r em abl e
ov
appl i anc es i n Eur ope
• Angles View.
• Social welfare system rapidly...
ADV
ANTAGES

www.indiandentalacademy.com
1.

Tipping,
overbite
correction
more readily undertaken.
2. Less complex control as less
teeth moved at a time and simple...
6.
7.
8.
9.

Less chairside time.
Less expensive.
Cleaned by the patient.
If causing trouble to the
patient can be removed...
LI M TI ATI ONS
I

www.indiandentalacademy.com
 Patient cooperation necessary.
 Only tipping is possible.
 Rotations of only one or two teeth
is possible if more then...
Can not be done in extraction
cases as no bodily movement.
Encroaches the tongue space
and hence a problem in
retention....
I NDI CATI ONS

www.indiandentalacademy.com
Growth modifications during
mixed dentition.
Limited
tipping,
rotation
required.
Arch expansion.
Retention
after
fixed...
CLASSI FI CAT
I ON
www.indiandentalacademy.com
REMOVABLE APPLIANCES

FUNCTIONAL
APPLIANCES

ACTIVE PLATE

www.indiandentalacademy.com
COM
PONENTS

www.indiandentalacademy.com
Retentive/ Active
Anchorage
CLASPS

Bows

Base
Plate

Springs Screws Elastics Bows

www.indiandentalacademy.com
CLAS
PS
www.indiandentalacademy.com
• The name clasp is derived
from
a
French
word
“UYPTAN” which means to
embrace. Clasps are the
retentive components of the...
• RETENTION :- is the
means whereby the
displacement of an
appliance is resisted.

www.indiandentalacademy.com
I DEAL REQUI REM
ENTS
 Unobtrusive.
 Not impinge.
 Close contact to the tooth.
 Usable in both deciduous and
permanent...
 No active force on the anchor
tooth.
 Rigid
 Easy to fabricate and also
replace if needed.
 Not interfere in the grow...
CLASSI FI CATI ON
A.

Hand Made
Machine Made.

B.

Single tag arm
Double tag arm
www.indiandentalacademy.com
M
ODE OF ACTI ON
engage
onto
the
• Clasp
undercuts (constricted areas
on the teeth.)
• Two types of undercuts.
/
– Buccal
...
CI RCUM
FERENTI AL
CLASP

www.indiandentalacademy.com
• Circumferential clasp / CClasp / 3/4th Clasp.
• To use the bucco-cervical
undercut.
• 2nd molar and canines.
• Single re...
www.indiandentalacademy.com
Adv ant ages
•
•
•
•

Good retention.
Easy to fabricate.
Single occlusal crossover wire.
Easy to replace.

www.indiandenta...
Di s adv ant ages
• Not on semi-erupted tooth.
• Decalcification of cervical
margin.
• Gingival irritation.
• Plaque accum...
JACKSONS
CLASP
www.indiandentalacademy.com
• V.H. Jackson 1906
• Jacksons Clasp / Full Clasp /
U Clasp.
bucco-cervical
and
• Both
proximal undercuts.
• 0.7mm to 1mm....
www.indiandentalacademy.com
Adv ant ages
• Simple design
• Adequate retention.

www.indiandentalacademy.com
Di s adv ant age
• Not useful in partially erupted
teeth.
• Difficult to adjust.
• Not on unfavorably inclined
tooth.

www...
SOUTH
END
CLASP
www.indiandentalacademy.com
• Most common for anterior
anchorage.
• Single arrowhead between CI
with
wire
following
the
gingival margin.

www.indiande...
www.indiandentalacademy.com
Adv ant ages
• Unobtrusive.
• Good retention.
• Even be used if Incisors are
proclined.

www.indiandentalacademy.com
TRI ANGULAR
CLASP

www.indiandentalacademy.com
called
as
MODIFIED
• Also
ZIMMER CLASP.
• Excellent retention by the single
arrowhead in the interproximal
area.
• Open en...
www.indiandentalacademy.com
Adv ant ages
•
•
•
•

Easy to fabricate.
Excellent retention.
Pre fabricated available.
Elastics can be engaged.

www.indi...
Di s adv ant ages
• Not usefull if adjacent tooth
is absent.
as
secondary
/
• Used
additional retention.

www.indiandental...
BALL END
CLASP
www.indiandentalacademy.com
• Action and location similar to
triangular clasp.
• Prefabricated available. Can
be made by adding solder to
end of a wir...
www.indiandentalacademy.com
Adv ant ages
•
•
•
•

Easy to fabricate.
Single occlusal interference.
Less gingival irritation.
Easy to replace.

www.ind...
Di s adv ant ages
• Short arm makes adjustment
difficult.
• Can not be used for primary
retention.
• Cannot be used in abs...
SCH ARZ
W
CLASP
www.indiandentalacademy.com
• Also called as ARROWHEAD
CLASP.
• A.M. Shwarz 1935.
• Mesial and distal undercuts of
the teeth.

www.indiandentalacademy...
www.indiandentalacademy.com
Adv ant ages
• Reliable retention.
not
interfere
in
• Does
posterior occlusion.
wire
hence
more
• More
flexible.
• More ea...
Di s adv ant ages
•
•
•
•
•

Difficult to fabricate.
Needs special plier.
Irritates soft tissue.
Tends to separate teeth.
...
CROZAT CLASP

www.indiandentalacademy.com
• Crozat in 1920
• Along with the u clasp a
stright wire is soldered on the
base (Cresent).
• Strong retention is possible...
www.indiandentalacademy.com
ADAM
S
CLASP
www.indiandentalacademy.com
• Adams clasp / modified arrowhead
clasp / liverpool clasp / universal
clasp.
• C. PHILIPS ADAMS in May 1950.
• Most widel...
FABRICATION

www.indiandentalacademy.com
par t s

oBRIDGE
o2 ARROWHEADS
o2 TAG ARMS
www.indiandentalacademy.com
BRI DGE
• Is 2/3rd the mesio dital width of the
tooth, or slightly less then the distance
between mesiobuccal and distobuc...
Ar r owheads
• They should lie in the disto- and
mesio buccal undercuts.
• Shaped according to the curve of
the
gum
margin...
Tag ar m
s
• Closely fitted to the contact points,
down to the interdental embrasure.
• Space between the tag arms and
pal...
www.indiandentalacademy.com
Adv ant ages
• Small neat and unobtrusive.
• Any tooth.
• Both deciduous and permanent
dentition.
• Even on semi erupted t...
di s adv ant ages
• Unwanted palatal tipping if gets
activated.
• May lead to elongation of tooth if
is fitting tightly.
•...
MODIFICATIONS

www.indiandentalacademy.com
Ant er i or adam
s
• 0.6mm
• Also called double clasp.

www.indiandentalacademy.com
W t h di s t al ext ens i on/
i
t r ac t i on hook
• To engage elastics
• Not given if sulcus is shallow.

www.indiandenta...
W t h eyel et
i

www.indiandentalacademy.com
W t h a s ol der ed hook
i

www.indiandentalacademy.com
W t h a s ol der ed t ube
i

www.indiandentalacademy.com
W t h a s i ngl e ar r owhead
i

www.indiandentalacademy.com
W t h ac c es s or y ar r owhead
i

www.indiandentalacademy.com
Sm t c l as p
ar

www.indiandentalacademy.com
Del t a c l as p

www.indiandentalacademy.com
Thank
you
www.indiandentalacademy.com
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Removable appliances /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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Removable appliances /certified fixed orthodontic courses by Indian dental academy

  1. 1. INDIAN DENTAL ACADEMY Leader in continuing dental education www.indiandentalacademy.com www.indiandentalacademy.com
  2. 2. REM AB OV LE APPLI AN CES www.indiandentalacademy.com
  3. 3. DEFI NI TI O N www.indiandentalacademy.com
  4. 4. REM OVABLE APPLI ANCE • REMOVABLE APPLIANCE ARE ORTHODONTIC DEVICES WHICH CAN BE TAKEN OUT BY THE PATIENT FOR CLEANING AND WHICH ARE DESIGNED TO APPLY FORCES TO THE TEETH BY MEANS OF SPRINGS SCREWS AND OTHER MECHANICAL COMPONENTS. www.indiandentalacademy.com
  5. 5. H STORY I www.indiandentalacademy.com
  6. 6. VI CTOR H UGO JACKSON • Early 20th century • United States • Appliances of vulcanite base with a precious metal or nickel-silver wire. www.indiandentalacademy.com
  7. 7. GEORGE CROZAT • Early 1900’s completely of • Appliance precious metal. • Had a clasp on molars and finger springs on anteriors made up of light wire, on a framework of heavy gold wire. www.indiandentalacademy.com
  8. 8. countries • European removable appliances. States fixed • United appliances. www.indiandentalacademy.com
  9. 9. Reas ons f or i nc r eas ed us e of r em abl e ov appl i anc es i n Eur ope • Angles View. • Social welfare system rapidly developed. • Scarcity of precious metals. www.indiandentalacademy.com
  10. 10. ADV ANTAGES www.indiandentalacademy.com
  11. 11. 1. Tipping, overbite correction more readily undertaken. 2. Less complex control as less teeth moved at a time and simple movements done. 3. Can eliminate occlusal interferences. 4. Can be done be a general practitioner. www.indiandentalacademy.com
  12. 12. 6. 7. 8. 9. Less chairside time. Less expensive. Cleaned by the patient. If causing trouble to the patient can be removed. 10. Aesthetically better. www.indiandentalacademy.com
  13. 13. LI M TI ATI ONS I www.indiandentalacademy.com
  14. 14.  Patient cooperation necessary.  Only tipping is possible.  Rotations of only one or two teeth is possible if more then fixed appliances.  Only few teeth can be moved at a time so prolongs the treatment. www.indiandentalacademy.com
  15. 15. Can not be done in extraction cases as no bodily movement. Encroaches the tongue space and hence a problem in retention. www.indiandentalacademy.com
  16. 16. I NDI CATI ONS www.indiandentalacademy.com
  17. 17. Growth modifications during mixed dentition. Limited tipping, rotation required. Arch expansion. Retention after fixed treatment. www.indiandentalacademy.com
  18. 18. CLASSI FI CAT I ON www.indiandentalacademy.com
  19. 19. REMOVABLE APPLIANCES FUNCTIONAL APPLIANCES ACTIVE PLATE www.indiandentalacademy.com
  20. 20. COM PONENTS www.indiandentalacademy.com
  21. 21. Retentive/ Active Anchorage CLASPS Bows Base Plate Springs Screws Elastics Bows www.indiandentalacademy.com
  22. 22. CLAS PS www.indiandentalacademy.com
  23. 23. • The name clasp is derived from a French word “UYPTAN” which means to embrace. Clasps are the retentive components of the orthodontic appliances. www.indiandentalacademy.com
  24. 24. • RETENTION :- is the means whereby the displacement of an appliance is resisted. www.indiandentalacademy.com
  25. 25. I DEAL REQUI REM ENTS  Unobtrusive.  Not impinge.  Close contact to the tooth.  Usable in both deciduous and permanent dentition.  Adequate retention. www.indiandentalacademy.com
  26. 26.  No active force on the anchor tooth.  Rigid  Easy to fabricate and also replace if needed.  Not interfere in the growth of jaws and eruption of teeth. www.indiandentalacademy.com
  27. 27. CLASSI FI CATI ON A. Hand Made Machine Made. B. Single tag arm Double tag arm www.indiandentalacademy.com
  28. 28. M ODE OF ACTI ON engage onto the • Clasp undercuts (constricted areas on the teeth.) • Two types of undercuts. / – Buccal undercuts. / – Mesial undercuts. Lingual Cervical Distal Proximal www.indiandentalacademy.com
  29. 29. CI RCUM FERENTI AL CLASP www.indiandentalacademy.com
  30. 30. • Circumferential clasp / CClasp / 3/4th Clasp. • To use the bucco-cervical undercut. • 2nd molar and canines. • Single retention arm. • 1mm wire used in molars. www.indiandentalacademy.com
  31. 31. www.indiandentalacademy.com
  32. 32. Adv ant ages • • • • Good retention. Easy to fabricate. Single occlusal crossover wire. Easy to replace. www.indiandentalacademy.com
  33. 33. Di s adv ant ages • Not on semi-erupted tooth. • Decalcification of cervical margin. • Gingival irritation. • Plaque accumulation enhanced. • Easily distort. www.indiandentalacademy.com
  34. 34. JACKSONS CLASP www.indiandentalacademy.com
  35. 35. • V.H. Jackson 1906 • Jacksons Clasp / Full Clasp / U Clasp. bucco-cervical and • Both proximal undercuts. • 0.7mm to 1mm. www.indiandentalacademy.com
  36. 36. www.indiandentalacademy.com
  37. 37. Adv ant ages • Simple design • Adequate retention. www.indiandentalacademy.com
  38. 38. Di s adv ant age • Not useful in partially erupted teeth. • Difficult to adjust. • Not on unfavorably inclined tooth. www.indiandentalacademy.com
  39. 39. SOUTH END CLASP www.indiandentalacademy.com
  40. 40. • Most common for anterior anchorage. • Single arrowhead between CI with wire following the gingival margin. www.indiandentalacademy.com
  41. 41. www.indiandentalacademy.com
  42. 42. Adv ant ages • Unobtrusive. • Good retention. • Even be used if Incisors are proclined. www.indiandentalacademy.com
  43. 43. TRI ANGULAR CLASP www.indiandentalacademy.com
  44. 44. called as MODIFIED • Also ZIMMER CLASP. • Excellent retention by the single arrowhead in the interproximal area. • Open end towards the occlusal. • Can engage elastics. • 0.7mm wire www.indiandentalacademy.com
  45. 45. www.indiandentalacademy.com
  46. 46. Adv ant ages • • • • Easy to fabricate. Excellent retention. Pre fabricated available. Elastics can be engaged. www.indiandentalacademy.com
  47. 47. Di s adv ant ages • Not usefull if adjacent tooth is absent. as secondary / • Used additional retention. www.indiandentalacademy.com
  48. 48. BALL END CLASP www.indiandentalacademy.com
  49. 49. • Action and location similar to triangular clasp. • Prefabricated available. Can be made by adding solder to end of a wire. www.indiandentalacademy.com
  50. 50. www.indiandentalacademy.com
  51. 51. Adv ant ages • • • • Easy to fabricate. Single occlusal interference. Less gingival irritation. Easy to replace. www.indiandentalacademy.com
  52. 52. Di s adv ant ages • Short arm makes adjustment difficult. • Can not be used for primary retention. • Cannot be used in absence of adjacent tooth. www.indiandentalacademy.com
  53. 53. SCH ARZ W CLASP www.indiandentalacademy.com
  54. 54. • Also called as ARROWHEAD CLASP. • A.M. Shwarz 1935. • Mesial and distal undercuts of the teeth. www.indiandentalacademy.com
  55. 55. www.indiandentalacademy.com
  56. 56. Adv ant ages • Reliable retention. not interfere in • Does posterior occlusion. wire hence more • More flexible. • More easy to adjust. • Enhances eruption. www.indiandentalacademy.com
  57. 57. Di s adv ant ages • • • • • Difficult to fabricate. Needs special plier. Irritates soft tissue. Tends to separate teeth. Is bulky hence less patient compliance. www.indiandentalacademy.com
  58. 58. CROZAT CLASP www.indiandentalacademy.com
  59. 59. • Crozat in 1920 • Along with the u clasp a stright wire is soldered on the base (Cresent). • Strong retention is possible www.indiandentalacademy.com
  60. 60. www.indiandentalacademy.com
  61. 61. ADAM S CLASP www.indiandentalacademy.com
  62. 62. • Adams clasp / modified arrowhead clasp / liverpool clasp / universal clasp. • C. PHILIPS ADAMS in May 1950. • Most widely used clasp. • Distobuccal and mesiobuccal undercuts. • Does not separate teeth like a arrowhead clasp. • 0.7mm posteriors 0.6mm anteriors. www.indiandentalacademy.com
  63. 63. FABRICATION www.indiandentalacademy.com
  64. 64. par t s oBRIDGE o2 ARROWHEADS o2 TAG ARMS www.indiandentalacademy.com
  65. 65. BRI DGE • Is 2/3rd the mesio dital width of the tooth, or slightly less then the distance between mesiobuccal and distobuccal undercuts, or length should be equal to the intercuspal distance. • Is 1-2mm away from the buccal surface of the tooth. • Is at 45o to the buccal surface of the tooth. • Should be straight. www.indiandentalacademy.com
  66. 66. Ar r owheads • They should lie in the disto- and mesio buccal undercuts. • Shaped according to the curve of the gum margins into the interdental papilla. • Long enough to keep the bride at a proper distance. • Should not touch the adjacent teeth www.indiandentalacademy.com
  67. 67. Tag ar m s • Closely fitted to the contact points, down to the interdental embrasure. • Space between the tag arms and palate for flow of acrylic. • No sharp bends. www.indiandentalacademy.com
  68. 68. www.indiandentalacademy.com
  69. 69. Adv ant ages • Small neat and unobtrusive. • Any tooth. • Both deciduous and permanent dentition. • Even on semi erupted tooth. • No specialized pliers required. • Can be modified as needed. • No. of variations are available. www.indiandentalacademy.com
  70. 70. di s adv ant ages • Unwanted palatal tipping if gets activated. • May lead to elongation of tooth if is fitting tightly. • Can be repaired only if fractured through the arrowheads. • Cannot be given on proclined anteriors. www.indiandentalacademy.com
  71. 71. MODIFICATIONS www.indiandentalacademy.com
  72. 72. Ant er i or adam s • 0.6mm • Also called double clasp. www.indiandentalacademy.com
  73. 73. W t h di s t al ext ens i on/ i t r ac t i on hook • To engage elastics • Not given if sulcus is shallow. www.indiandentalacademy.com
  74. 74. W t h eyel et i www.indiandentalacademy.com
  75. 75. W t h a s ol der ed hook i www.indiandentalacademy.com
  76. 76. W t h a s ol der ed t ube i www.indiandentalacademy.com
  77. 77. W t h a s i ngl e ar r owhead i www.indiandentalacademy.com
  78. 78. W t h ac c es s or y ar r owhead i www.indiandentalacademy.com
  79. 79. Sm t c l as p ar www.indiandentalacademy.com
  80. 80. Del t a c l as p www.indiandentalacademy.com
  81. 81. Thank you www.indiandentalacademy.com

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