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Clasps 1/certified fixed orthodontic courses by Indian dental academy
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Clasps 1/certified fixed orthodontic courses by Indian dental academy



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.

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



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Clasps 1/certified fixed orthodontic courses by Indian dental academy Clasps 1/certified fixed orthodontic courses by Indian dental academy Presentation Transcript

  • CLASPS INDIAN DENTAL ACADEMY Leader in continuing dental education www.indiandentalacademy.com www.indiandentalacademy.com
  •  Clasps are the retentive components of the orthodontic appliances. INTRODUCTION The unit of removable orthodontic appliance that holds the appliance in position and is called clasp. www.indiandentalacademy.com
  • There are many types of clasps. 1.’ C ’ clasp 2.Full clasp or Jackson’s clasp 3.Triangular clasp 4.Adam’s clasp and their modifications 5.Schwarz clasp 6.South end clasp 7.Duyzing clasp 8.Ball end clasp 9.Crozat clasp www.indiandentalacademy.com
  • IDEAL REQUIREMENTS • Unobtrusive. • Not impinge. • Close contact to the tooth. • Usable in both deciduous and permanent dentition. • Adequate retention. www.indiandentalacademy.com
  • • 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
  • USES To secure the appliance in position To prevent rolling of appliances To resist forces of displacement To provide retention & anchorage For engaging elastics www.indiandentalacademy.com
  • MODE OF ACTION OF CLASPS Clasp engage onto the undercuts (constricted areas on the teeth.) Two types of undercuts. Buccal / Lingual Cervical undercuts. Mesial / Distal Proximal undercuts. www.indiandentalacademy.com
  • CIRCUMFERENTIAL CLASP www.indiandentalacademy.com
  •  Circumferential clasp / C-Clasp / 3/4th Clasp.  It uses the bucco-cervical undercut.  Single retention arm.  1mm wire used in molars. www.indiandentalacademy.com
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  • Advantages  Good retention.  Easy to fabricate.  Single occlusal crossover wire.  Easy to replace. www.indiandentalacademy.com
  • Disadvantages  Not on semi-erupted tooth.  Decalcification of cervical margin.  Gingival irritation.  Plaque accumulation enhanced.  Easily distort. www.indiandentalacademy.com
  • JACKSONS CLASP www.indiandentalacademy.com
  •  Jackson 1906  Jacksons Clasp / Full Clasp / U Clasp.  Both bucco-cervical and proximal undercuts. www.indiandentalacademy.com
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  • Advantages  Simple design  Adequate retention. www.indiandentalacademy.com
  • Disadvantages  Not useful in partially erupted teeth.  Difficult to adjust.  Not on unfavorably inclined tooth. www.indiandentalacademy.com
  • SOUTHEND CLASP www.indiandentalacademy.com
  •  Most common for anterior anchorage.  Single arrowhead between Central Incisors with wire following the gingival margin. www.indiandentalacademy.com
  • TRIANGULAR CLASP www.indiandentalacademy.com
  •  Excellent retention by the single arrowhead in the interproximal area.  Free end towards distal to facilitate the engagement of elastics. www.indiandentalacademy.com
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  • Advantages  Easy to fabricate.  Excellent retention.  Pre fabricated available.  Elastics can be engaged. www.indiandentalacademy.com
  • Disadvantages  Not useful if adjacent tooth is absent.  Used as secondary / additional retention. www.indiandentalacademy.com
  • BALL END CLASP www.indiandentalacademy.com
  •  Action and location similar to triangular clasp.  Pre fabricated available. Can be made by adding solder to end of a wire. www.indiandentalacademy.com
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  • Advantages  Easy to fabricate.  Single occlusal interference.  Less gingival irritation.  Easy to replace. www.indiandentalacademy.com
  • Disadvantages  Short arm makes adjustment difficult.  Cannot be used for primary retention.  Cannot be used in absence of adjacent tooth. www.indiandentalacademy.com
  • SCHWARZ CLASP www.indiandentalacademy.com
  •  Also called as ARROWHEAD CLASP.  Mesial and distal undercuts of the teeth. www.indiandentalacademy.com
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  • Advantages  Reliable retention.  Does not interfere in posterior occlusion.  More length of wire hence more flexible.  More easy to adjust.  Enhances eruption. www.indiandentalacademy.com
  • Disadvantages  Difficult to fabricate.  Needs special plier.  Irritates soft tissue.  Tends to separate teeth.  Is bulky hence less patient compliance. www.indiandentalacademy.com
  • CROZAT CLASP www.indiandentalacademy.com
  •  Along with the u clasp another curved wire is soldered on the base.  Strong retention is possible www.indiandentalacademy.com
  • ADAMS CLASP www.indiandentalacademy.com
  •  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
  • Parts BRIDGE 2 ARROWHEADS 2 TAG ARMS www.indiandentalacademy.com
  • BRIDGE  Is 2/3rd the mesio-distal 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
  • Arrowheads  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 bridge at a proper distance.  Should not touch the adjacent teeth www.indiandentalacademy.com
  • Tag arms  Closely fitted to the contact points, down to the interdental embrassure.  Space between the tag arms and palate for flow of acrylic.  No sharp bends. www.indiandentalacademy.com
  • Advantages  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 modifications are available. www.indiandentalacademy.com
  • Disadvantages  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
  • Fabrication www.indiandentalacademy.com
  • MODIFICATIONS OF ADAMS CLASP www.indiandentalacademy.com
  • Anterior Adams  0.6mm  Also called double clasp. www.indiandentalacademy.com
  • With distal extension/ traction hook  To engage elastics  Not given if sulcus is shallow. Distal extension www.indiandentalacademy.com
  • With a soldered hook www.indiandentalacademy.com
  • With a soldered tube www.indiandentalacademy.com
  • With a single arrowhead www.indiandentalacademy.com
  • With accessory arrowhead www.indiandentalacademy.com
  • For more details please visit www.indiandentalacademy.com www.indiandentalacademy.com