Orthodontic instruments


Published on

orthodontic instruments

Published in: Health & Medicine
No Downloads
Total views
On SlideShare
From Embeds
Number of Embeds
Embeds 0
No embeds

No notes for slide

Orthodontic instruments

  1. 1. Orthodontic instruments Dr Ravikanth Lakkakula
  2. 2. Contents i. Introduction ii. Classification of orthodontic instruments 1. Instrument used for placement of separators Separator placement plier 2. Band preparation instruments Band cutting scissor Jhonson band contouring plier Band pinchable plier Peak plier Mershon band pusher Nylon band seater Band crimping plier Double beak plier Dr Ravikanth Lakkakula
  3. 3. 3. Band removing plier -Anterior band removing plier -Posterior band removing plier 4. Bracket positioning instruments Boons gauge Bracket positioning height gauge Direct bonding bracket holder Orthodontic bracket card 5. Bracket removing plier -Anterior bracket removing plier - Posterior bracket removing plier - kurz lingual bracket removing plier Dr Ravikanth Lakkakula
  4. 4. 6.Wire cutting instruments Pin and ligature cutter Distal end wire cutter Kurz distal end cutter Heavy wire cutter Maun’s heavy duty wire cutters Face bow bending/cutting pliers 7.Clasp forming instruments Adams plier Adams clasp bending plier Adams clasp former Adams spring forming plier Dr Ravikanth Lakkakula
  5. 5. 8.Arch forming instruments. Turret Dela rosa arch contouring plier Bird beak plier Standard light wire plier Jaraback light wire plier 9. Loop forming pliers Nance loop forming plier Loop tie back plier Tweed loop forming plier Optical loop forming plier Young’s loop bending plier Dr Ravikanth Lakkakula
  6. 6. 10. Utility plier Howe plier Three prong plier Utility arch plier Rose torquing plier Ribbon arch plier 11. Others Impression trays Intraoral mirrors Cheek retractors Tongue separator with saliva ejector Dontrix gauge Correx gauge Coon style ligator Ligature forming plier Mosquito forceps Mathew needle holder Straight shooter ligature gunDr Ravikanth Lakkakula
  7. 7. Ligature tucker Speedo ligature director Mitchell trimmer Adjustable enamel stripper Nance tie back plier Hook crimping plier Lingual arch plier Distal wire twister Detailing step bending plier V bending plier Kurz first and second order bending fork Spiral blade saw Schumth measuring grid Tube converting plier iii. conclusion Dr Ravikanth Lakkakula
  8. 8. Introduction  Orthodontics is the study of the diagnosis, prevention and treatment of irregularities of the teeth and jaws.  Orthodontic instruments are used in conjunction with fixed and removable appliances.  For orthodontist, it is essential to know that the instruments that have to use routinely. It is expected to increase the working knowledge of the orthodontist and also prevent the misuse of more delicate instruments. Dr Ravikanth Lakkakula
  9. 9. Stainless steel and tungsten carbide are the two materials routinely used for cutting edges of the instruments. The advantages of tungsten carbide tips over stainless steel are 1. More durability. 2. Precise cutting performance. 3. Sharp cutting edge. 4.Three times more stiffer than stainless steel. 5. Resistant to scratches. 6.The cutting edge maintains sharpness and alignment. 7. Extra grip. Disadvantage is brittle of the material (Tungsten carbide) Dr Ravikanth Lakkakula
  10. 10.  Stainless steel : Extremely corrosion resistant.  Cutting inserts and tips : Made of hard metal.  Tungsten Carbide Tips : Stiffer and denser than steel.  Shape and screw joint : Ergonomically designed to meet any orthodontic requirement.  Gold brazing : For longer instrument life.  Rounded tips : For patient comfort and safety.  Serrations on working ends : To improve grip.  Bow out handles : Comfortable Handling. Features of Orthodontic instruments Dr Ravikanth Lakkakula
  11. 11. Classification of Orthodontic instruments classification of orthodontic instruments was based on the sequential procedures carried out during orthodontic treatment, right from separation of teeth for banding till debonding and debanding procedures up to completion of orthodontic treatment. Dr Ravikanth Lakkakula
  12. 12.  Separating plier or the separator placing plier is made up of stainless steel with spring back action.  It is used for expanding elastic separators or separating rings before positioning them interdentally.  Barrel-shaped tip prevents slippage of the module, reduces the risk of tissue damage.  Angled beaks facilitate easier placement of elastic separators in anterior and posterior areas. SEPARATING PLIERS or SEPARATOR PLACING PLIER Dr Ravikanth Lakkakula
  13. 13. It is available in either straight or curved pattern and long and short cutting edge pattern. • It is made from especially hardened stainless steel with tungsten carbide inert cutting tip. • It is used for cutting thin metal bands or band material. Band cutting Scissors Band forming instruments Dr Ravikanth Lakkakula
  14. 14.  Handle is cylindrical and working end is serrated.  It is used to push bands so as to seat them and / or adapt them to the exact contour of the teeth.  A hollow anatomically formed grip handle makes the band pusher light and the serrated rectangular tip provides for a good transfer of force when positioning bands. Mershon band pusher Dr Ravikanth Lakkakula
  15. 15.  Band seater is available in various shapes and are generally made of high impact plastics or wood .  The biting surface is generally tin inlay. Its shape is round, square or triangular (allows easy access to interproximal area) with a serrated surface finish .  Square tip allows maximum grip and prevent slippage.  It is used for patient to bite on the surface with the tin inlay tip resting on the lug or the band edge. Nylon band seater Dr Ravikanth Lakkakula
  16. 16.  It is used to contour the gingival surface of preformed bands to provide better tooth anatomy. Band crimping plier Dr Ravikanth Lakkakula
  17. 17.  The Johnson band contouring plier is ideal for contouring and adapting bands.  Beaks are tapered with a slight bow. One beak is concave while the other is convex allowing re-contouring of bands.  It can be used to re-contour band edges that sometimes get bent during band placement. Johnson band contouring plier Dr Ravikanth Lakkakula
  18. 18. Band pinchable plier  Beaks are in triangular passion with inner surfaces had serrated for better control of band material.  It is used for pinching of bands during band preparation.  It has two types curved and straight.  Curved (45˚) pinchable plier used for lower band preparation , and straight is used for upper band preparation. Dr Ravikanth Lakkakula
  19. 19.  It is used for preparation of band to tooth. • Contour fitting to the side of a tooth is aided by the concave surface or depression at the outer ends of each of the band clamping portion.  The purpose of the elevated edge is to provide a friction contact with a portion of the material of the strip to prevent it from slipping in the use of the plier in the operation of forming a band around a tooth. Peak plier Concave surface E L E V A T E D Dr Ravikanth Lakkakula
  20. 20.  It is made of stainless steel, the double beak pliers are used for forming bands in the mouth.  These are available separately for anterior and posterior band fabrications.  These were of immense importance when all teeth used to be banded. Double beak pliers Dr Ravikanth Lakkakula
  21. 21. Anterior band remover plier It have a narrow groove into which the incisal edge of the anterior tooth is placed and the sharp end is inserted gingival to the gingival extension of the anterior band. Band removing pliers Dr Ravikanth Lakkakula
  22. 22. Oliver Jones Posterior band removing plier It is used to remove posterior metal bands with maximum patient comfort. The tip is postured in middle of the pad for easy removal of bands. A plastic padded tip and sharp removing beak with a slight pressure allow easy band removal. Plastic head rest on the occlusal surface of tooth and the sharp tip below the gingival contour of the band.The pressure at handles causes the band to lift off the tooth. Metal type Plastic type Dr Ravikanth Lakkakula
  23. 23. • It is the most frequently used bracket positioning aid. • It is made of stainless steel. • It accurately measures height of bracket placement from the incisal edge at 3.5, 4, 4.5 and 5mm.  Flat surface rests on incisal/occlusal surface of tooth. Simplifies seating the bracket on the teeth with exactly the right distance between bracket slot and incisal edge with pencil lid or metal tips. Boons Gauge Bracket positioning instruments Dr Ravikanth Lakkakula
  24. 24. • This device simplifies the seating of brackets on the teeth with exactly the right distance between the bracket slot and incisal edge. • It is generally made of aluminum or stainless steel. • It accurately measures height of bracket placement from the incisal edge at 2, 2.5, 3, 3.5, 4, 4.5, 5 and 5.5mm. Bracket positioning height gauge Dr Ravikanth Lakkakula
  25. 25. • It holds any type of bracket from a wide twin to a single one. • Reverse action type handle which on pressing the handle openup the beaks. • Beaks are diamond shaped with serrations to grip the bracket. • Flat end of the handle used to press the bracket into position for bonding. Bracket holder Dr Ravikanth Lakkakula
  26. 26.  It is used to organise and hold orthodontic brackets to facilitate quick bracket placement.  Each circle on the card corresponds to a particular tooth in the mouth.  Brackets are placed corresponding to the tooth to be bonded.  Tape on the back of the card helps to keep brackets in place. Orthodontic bracket card Dr Ravikanth Lakkakula
  27. 27. • Bracket removing pliers are used for removing bonded brackets. • The wide tips wedge between both the edges of the base of the bracket and the tooth surface(incisal-gingival direction), easily lifting off the bracket. • Available in two forms as straight (for anterior debonding) and with a 60° angled tip (which allows better access to posterior areas). • Anterior debonding plier is also used for removal of adhesive remanant on enamel surface after bracket debonding. Bracket removing pliers Dr Ravikanth Lakkakula
  28. 28. Kurz lingual bracket removing plier • It is designed to fit the design of lingual brackets under the lingual hooks and bite turbos.  This instrument incorporates a state of the art spring mechanism to improve durability and has an increased arm radius to allow for better movement. • It is used to removal of lingual brackets and bite turbos. Dr Ravikanth Lakkakula
  29. 29. • The Cutting edge is made from stainless steel or Tungsten carbide which is placed mesial to the beaks. • They are especially designed for accuracy right to the tip, for smooth cutting of soft ligature wires and lock pins and elastomerics. It cannot be used on ligatures more than 0.015mm in diameter as it damages the cutting edge. Pin and ligature cutter(PLC) Wire cutting instruments Dr Ravikanth Lakkakula
  30. 30. PLC with 45 ° and 90˚ angled cutting tips for easy cutting of ligatures especially in the posterior areas in the lingual technique. Pin and Ligature cutter - Angulated Dr Ravikanth Lakkakula
  31. 31.  The distal end cutter is capable of cutting archwires up to 0.56 x 0.70 mm/ .022" x .028 " both intraoral and extraoral method.  It is used exclusively for cutting the distal end of wire protruding out of the molar tubes.  It had a‘safety’ mechanism to hold the cut archwire so it does not fall into the patients mouth. Distal end cutter Dr Ravikanth Lakkakula
  32. 32. Kurz distal end cutter It is similar to distal end cutter, but difference is it was designed with long body so it can reach back into depth of mouth. Dr Ravikanth Lakkakula
  33. 33.  Hard wire cutters have hard metal tips or tungsten carbide tips.  These are heavier and larger than the pin and ligature cutters.  These are used to cut all wires up to 0.020" round. Hard wire cutters Dr Ravikanth Lakkakula
  34. 34.  Heavy wire cutters are also called heavy gauge side cutters. They are capable of cutting wires of up to 1.3 mm diameter. These are used mainly in the laboratory purpose. Maun’s Heavy duty wire cutters Dr Ravikanth Lakkakula
  35. 35.  The face bow bending pliers are ideal for bending and cutting the outer bows of a face bow.These can be used to bend wires up to a diameter of 1.8 mm. Face bow bending/cutting pliers Dr Ravikanth Lakkakula
  36. 36.  Adam's plier is used in the fabrication of the Adam's clasp and has two smooth rectangular beaks .  Made of a hard stainless steel with or without TC tip , that is harder than the wires that they will be used to form.  The distance between hinge pin and the tips of the beaks is short.  The sides of the beaks are flat and edges of the grasping surface of the beaks are sharp and textured , inner surfaces must not be polished but also must not be serrated or grooved. Adam’s plier Clasp forming instruments Dr Ravikanth Lakkakula
  37. 37.  When the beaks are closed , the tips should be a gap at the hinge tapering evenly to contact at the tips.  The gap at the hinge should be 0.6 mm .This ensures that a 1.0mm wire can be held firmly, the surfaces of the beaks then being parallel.  When a wire is gripped at the tips of the beaks there is no tendency for the wire to slip out of the pliers.  It is also used for adjustment of headgear and facebow. Dr Ravikanth Lakkakula
  38. 38.  Adams' clasp bending pliers are special pliers for easy forming of Adams' clasps in one step.  It can be used for wires upto the diameter of 1 mm. Adam’s clasp bending pliers Dr Ravikanth Lakkakula
  39. 39.  Arrow clasp bending pliers are used to bend the arrow clasp, so that the arrow head can engage the retentive under cut.  It is used for wires up to the diameter of 0.7 mm. Arrow clasp bending pliers Dr Ravikanth Lakkakula
  40. 40.  Arrow clasp former is used for hard wires up to 0.7 mm/0.028". It forms the clasp of the shape and small stops in the archwire. Arrow clasp former Dr Ravikanth Lakkakula
  41. 41.  It is used to adjust springs on orthodontic removable appliances.  It Can be used to smooth and contour archwires  It has two beaks, One beak is rounded, the other is square/flat ended. Adams spring forming plier Dr Ravikanth Lakkakula
  42. 42. TURRET  It is used for preparation of arch wires with or without torque adjustment.  It is available in six different versions and colors – Blue, Black, Gold, Silver, Purple, Green.  The wire slotted body is made of stainless steel. Arch forming instruments Dr Ravikanth Lakkakula
  43. 43. TURRET – BLUE It is used For forming rectangular arch wires .016" up to .0215". TURRET - BLACK It is used for forming rectangular arch wires with torque adjustments: 0° - 10° - 16° - 23°. For use only with wire: .016"x.022". Dr Ravikanth Lakkakula
  44. 44. TURRET - GOLD It is used for forming rectangular arch wires with torque adjustments: 0° - 7° - 10° - 13° - 16°. It is used for use only with wire: .018". TURRET - SILVER It is used for forming rectangular arch wires with torque adjustments: 0° - 7° - 10° - 13° - 16°. It is used for use only with wire: .022". Dr Ravikanth Lakkakula
  45. 45. TURRET - PURPLE It is used for forming rectangular arch wires with torque adjustments: 0° - 10° - 16° - 23°. It is used for use only with wire: .016"x.016". TURRET - GREEN It is used for forming round arch wires: .014" - .016" - .018" - .020". Dr Ravikanth Lakkakula
  46. 46.  The De La Rosa as it is frequently called, has guiding grooves for forming round and square arches 0.016", 0.018", 0.020" and 0.022".  It helps to accentuate the curvature in the arch wire. De la rosa contouring pliers Dr Ravikanth Lakkakula
  47. 47. • An extremely popular and versatile utility plier designed for working round wire up to 0.030” (0.76mm) in diameter. Bird beak plier Dr Ravikanth Lakkakula
  48. 48. • The round beak is precision ground to a perfect cone (.025 at the tip). • The pyramid beak is exactly .025mm wide at the tip and a 90° angle is ground on the sides to allow for wire. • Beaks are parallel at 0.020 inch opening. • Working edges are carefully beveled and diamond honed to prevent scoring. Dr Ravikanth Lakkakula
  49. 49.  Longer, more gradually tapered beaks than bird beak pliers .  A round beak with a cone tip of .025 and a pyramid tip with 9° angle ground on the sides to allow for wire springback.  Slender beaks make it easier to bend small diameter loops.The working edges are carefully beveled to prevent wire scoring.  It comes with and without serrations on its flat beak.  It can be used for arch form and spring preparation.  It is used for hard wires up to 0.5 mm or 0.020" diameter. Standard light wire plier Dr Ravikanth Lakkakula
  50. 50. • The Jarabak light wire plier has a shape, which is slightly different from the original light wire plier. • It had 3 sets of precision grooves assure accurate bending and closing loops. Flat tip is serrated for firm gripping. • Serves the same function and can be used to bend spring hard wires upto 0.5 mm or 0.020" diameter. Jaraback light wire plier Dr Ravikanth Lakkakula
  51. 51.  This sturdily constructed plier, has hard tips and the beaks are cone and pyramid shaped.  It is available in two beak lengths – short and long. Angle wire bending pliers Dr Ravikanth Lakkakula
  52. 52.  Nance loop forming pliers is ideally suited for fanning different loops and adjusting preshaped arches for the fixed appliance technique.  It has four step beaks which are ideal for bending loops of different sizes in both round and rectangular wires.  Both edges of thin blades are fully radiused and stepped-in 3 mm, 4 mm, 5 mm and 6 mm for various size loop forming.All working edges are carefully beveled to avoid wire damage.  This plier can bend wires up to a diameter of 0.7 mm or 0.028". Nance loop forming pliers Dr Ravikanth Lakkakula
  53. 53.  It is a Four-step plier (2mm,3mm,4mm,5mm step lengths) automatically forms loops on wire up to .020" with one motion.  Closing loops are easily made to desired height. Loop tie back plier Dr Ravikanth Lakkakula
  54. 54.  Multiple loops of the same dimension and omega loop can be easily bent with this plier.  Round beak has three step sections of 0.045, 0.060, and 0.075 inch diameter.  Cylindrical beak is electro-etched to prevent wire slippage.  Concave beak has slight parallel serrations to hold wire at 90° angle while forming loops.  Replacement tips with Allen wrench available.  Maximum wire capacity .021 x .028 Tweed loop forming plier Dr Ravikanth Lakkakula
  55. 55. • It had one round and one concave beak for bending round and edgewise wire up to .028" without nicking. • It forms stops in any type of wire. • It is also useful for loop tie back and Gable bends. Optical plier Dr Ravikanth Lakkakula
  56. 56.  Young loop bending plier is a universal pliers for different size loops.  It provides a uniform dimension to the loops.  It is used for hardwires up to 0.7 mm or 28 inches. Young loop bending pliers Dr Ravikanth Lakkakula
  57. 57.  TheWeingart plier is used to guide and move the archwire in and out of placement and bending the archwire ends.  The bend in the beak facilitates easy grasping of the archwire and guiding into buccal tubes.  It has accurately closing serrated tips.  It is capable of bending hard wires up to a diameter of 0.5 mm / 0.020". Weingart universal pliers Kurz utility plier 45 degrees angulated tip for lingual technique Dr Ravikanth Lakkakula
  58. 58.  Universal Pliers for bending wires up to 0.9 mm (035") or cutting up to 0.7 mm (028"). Universal plier Dr Ravikanth Lakkakula
  59. 59. These are mainly of two types: 1) straight howe. 2) curved howe. Straight Howe pliers are utility pliers have long, slender lip-safe tips.They are used to hold arch wires.The special tip design makes these pliers also suited to seating individual anterior bands. Howe pliers Utility pliers Dr Ravikanth Lakkakula
  60. 60.  Curved Howe pliers are also utility pliers with long, slender, curved lip-safe tips, which increase its efficiency in posterior areas. The tips are bent at 40° for better access. Dr Ravikanth Lakkakula
  61. 61.  The three prong plier has three precision aligned tips, which ensures consistent bends in lingual bars and wires.  It is capable of bending wires up to a diameter of .030".  It is also used for the activation of the quad - helix appliance. Three Prong pliers Bending of facebow wiresDr Ravikanth Lakkakula
  62. 62.  Special design with 3mm step for accurate utility arch construction.  The notches in the plier beaks crimp the preformed arch wires into proper position. Utility arch plier Dr Ravikanth Lakkakula
  63. 63. These pliers are generally used in pairs for applying labial or lingual torque (Single or Multiple)to archwires . Parallel grip prevents crushing of wires. They can be used for wires upto the diameter of 0.56-0.70mm or 0.022-0.028”. Rose torquing plier Dr Ravikanth Lakkakula
  64. 64.  Ideal for bending square and rectangular wire up to .0215 x .028. Edges are radiused and hardened, to prevent wire scoring and to preserve a smooth contact area with the wire.  Blades are parallel when opened to .020, to ensure accurate 90° bends.  Maximum wire capacity: .0215 x .028 Ribbon arch plier Dr Ravikanth Lakkakula
  65. 65. It is used to hold impression material. It can be perforated for better retention and high flange for record full sulcus depth. It had a handle for better grasp during placement and removal. Impression trays upper lower Others Dr Ravikanth Lakkakula
  66. 66. • It is used retract cheeks and lips for better visibility.  It is Often used when bonding of brackets and taking intraoral photographs and during bonding of brackets.  Available in small , medium sizes.  Available in wing and wingless and interconnected wire design.  Available in transparent and various colors. Cheek retractors Dr Ravikanth Lakkakula
  67. 67.  Tongue-Away Shields are molded from a soft, resilient plastic or from expanded polystyrene that can be safely disposed of after each patient.  Restricts the tongue to prevent moisture contamination and alleviates patient fatigue by offering occlusal support during bonding procedures.  Vertical shield is offset to provide adequate tongue space.  Surfaces of bite blocks are angulated and serrated for retention.  Holes in bite blocks facilitate placement and removal with a bird-beak plier, permit attachment of a safety string or allow insertion of a saliva ejector. Tongue - Away Shield Plastic type Disposable typeDr Ravikanth Lakkakula
  68. 68. Tongue retractor with saliva ejector • It provides dry working field , the keeps the tongue away from lingual surface of teeth and isolated them from saliva contamination. • It allows the enough space and access to place the indirect bonding material. Dr Ravikanth Lakkakula
  69. 69. • It is madeup of glass or stainless steel material.  It aid in visibility when taking intra-oral photographs.  It Often used in conjunction with cheek retractors.  Different sizes and shapes available. Intraoral mirrors Dr Ravikanth Lakkakula
  70. 70.  The ligator is used for fast ligating of the complete arch i.e., tie long ligatures into a‘figure-of-eight’.  The 'Y'-shaped tip simplifies the twisting of the ligature.  It can be used for ligature wires up to 0.3 mm / 0.012" diameter. Coon style ligator Dr Ravikanth Lakkakula
  71. 71. Ligature forming plier  It is used for easy bend into ligature wire for preparation of preformed pattern. Dr Ravikanth Lakkakula
  72. 72.  Mosquito forceps are used for placing elastic ligatures and tightening the ligature wire around brackets.  It is available in straight and curved (45 ˚)end pattern.  Beaks are serrated for better grasp. Mosquito artery forceps Kurz mosquito artery forcepsDr Ravikanth Lakkakula
  73. 73.  Mathieu needle holder has a convenient and practical design and is ideal for ligation. • It has serrated tips(2.5mm), which allow better gripping of the thin ligatures and elastomeric modules.  The handle has a locking mechanism and a spring mechanism that help the operator to quickly open and close the pliers. Mathieu needle holder Kurz mathieu needle holder - 45˚Dr Ravikanth Lakkakula
  74. 74.  Straight Shooter ligature gun madeup of thermoplastic material , it provides a safe, convenient, hygienic means of applying elastomeric ligatures to edgewise brackets.  It eliminates the possibility of haemostats or other instruments causing soft tissue damage due to ligatures breaking or slipping off tie wing.  Two sizes of Straight Shooter are available.The Mini Bracket Shooter is for mini and single-wing brackets and theTwin Bracket Shooter for standard, twin-size brackets. Straight Shooter ligature gun Dr Ravikanth Lakkakula
  75. 75.  The ligature adjuster and tucker is usually a double ended or single ended instrument.  Notch in working end allows operator to apply pressure to archwire to bend it into bracket slot.  It is used to tuck the cut ends of the ligature wires so that they do not hurt soft tissues. Ligature adjuster and tucker Dr Ravikanth Lakkakula
  76. 76.  Double ended stainless steel for placing and removing elastic ligatures. It reduces stress on newly bonded brackets during ligation. Speedo Ligature Director Dr Ravikanth Lakkakula
  77. 77. Adjustable enamel stripper  It is specially designed and developed for easy, efficient removal and recontouring of the interproximal tooth enamel, for the widening of contact points or for the removal of overhanging fillings.  Steel strips feature grit on one side only. Dr Ravikanth Lakkakula
  78. 78. Dontrix gauge  Measures the force of coil springs , archwires and elastics 1ounce(28grams) upto 16 (450)Ounces.  Marked in one ounce increments.(1 Ounce = 28.395 grams)  The shaft is calibrated on both ends for measuring either tension or stress by reversing the gauge.  It is used by placing hook end to which type of material force is measured and check the calibirated value on chart. Dr Ravikanth Lakkakula
  79. 79. Correx gauge  It is also used for measuring tensile and compressive forces.  It record the forces in grams.  It is available three variation of force measuring designs. Type 1 : 25 -250 grams Type 2 : 50 -500 grams Type 3 : 100 -1000 grams Dr Ravikanth Lakkakula
  80. 80.  It is used after placement of orthodontic bands to remove excess cement.  It can also Can be used after debonding brackets in the removal of excess cement with a conventional handpiece and a debonding bur. Mitchell trimmer Dr Ravikanth Lakkakula
  81. 81. It is a multipurpose specialty pliers are used for easily forming stops, tie backs or adam’s clasps for retainers. NanceTie Back Pliers Dr Ravikanth Lakkakula
  82. 82.  It is used for crimping of hooks to the archwire .  Two grooved inserts maintain a firm grip on the tube as it is delivered to the arch wire.  Securely crimps the tube at three points to prevent the ends from flaring.  Lower beaks are thinner to accommodate curvature of arch hook. Hook crimping plier Dr Ravikanth Lakkakula
  83. 83.  It is used for Cinchback bends in the archwire.  Simply insert the tip over the distal end of the arch wire and twist in the desired direction. Straightening cinchback bends are done with equal efficiency, thus reducing the time required for changing arch wires. These are available in two sizes.  The small (1mm internal diameter) is ideal for wire sizes up to .018 round and square sizes up to .016 x .016.  The large (2mm)will accommodate round wire up to .020, square wire up to .018 x .018, and rectangular wire up to .021 x .025. Distal wire twister Dr Ravikanth Lakkakula
  84. 84.  It is designed to form double and triple bends in either 0.030” (0.076mm) or 0.036” (0.091mm) wire for inserting lingual sheaths.(TPA and Lingual arch preparation) Lingual arch plier Dr Ravikanth Lakkakula
  85. 85.  It has double sided offset beaks permits bayonet bends.  Automatically forms a bayonet-style step bend, up or down, in or out, without disengaging the archwire.  It produces right hand or left hand step up or step down at ¼ , ½ , ¾ or 1mm increments. Detailing step plier Dr Ravikanth Lakkakula
  86. 86.  It is used for putting permanent centerline, anti-shift gable bends and positive stops anywhere in nickel titanium arches. V-Bending Pliers Dr Ravikanth Lakkakula
  87. 87. These tools are allows the placement of first order and second order bends in the lingual archwire without need to replace elastic modules and ligatures. Kurz first order and second order bending fork Dr Ravikanth Lakkakula
  88. 88.  It is used to place horizontal and vertical cuts in diagnostic model for preparation of tooth section in kesling diagnostic setup.  Blades are available in various lengths.  Most commonly 0.004 inch cutting width(fine), 12 inch length are used. Spiral blade saw Dr Ravikanth Lakkakula
  89. 89.  Made of plexiglas, for symmetric measurements of dental arch on plaster casts, in millimetres.  Grid screen dimension 60x60x10mm.  This screen is printed red with a 1 x 1 cm scale on one side and the other side in black with a 1 cm x 2 mm scale.  When the red and black scales are in alignment, parallax errors are not present and accurate measurements can be taken. Schumth Measuring Grid Dr Ravikanth Lakkakula
  90. 90. Tube converting plier Dr Ravikanth Lakkakula
  91. 91. It is used for the conversion of convertible molar tube into bracket. Procedure : Step 1: Insert instrument into mouth with the slide mechanism parallel to the arch plane and the handles pointing outward. Step 2 :With handles wide open (slide bar tip fully retraced) align and insert tip into arch wire slot of buccal tube. Close handles slowly until anchor tip of pliers is firmly supported on distal end of the buccal tube. Dr Ravikanth Lakkakula
  92. 92. Step 3 : Maintaining instrument alignment, close handles slowly and steadily, driving the slide bar tip into the arch wire slot.The convertible cap will peel away, converting the buccal tube to a molar bracket. Step 4 : If the slide bar tip is adjusted for partial conversion, open the plier handles fully and carefully remove the instrument from the patient’s mouth. If the tip is bound up in the arch wire slot, slowly pivot the entire instrument outward to free the tip.The partially converted cap can be securely grasped with a utility pliers, rotated distally to break away the attachment and removed from the patient’s mouth. Dr Ravikanth Lakkakula
  93. 93. ReplacingThe Slide BarTip : Open pliers handles to retract slide tip half way and hold this position. Remove the slide bar retaining screw. Grasp the tip with a utility pliers, rotate upward and remove the tip. Insert a fresh tip, replace and tighten retaining screw securely. Dr Ravikanth Lakkakula
  94. 94. Conclusion Various orthodontic instruments and pliers that are specially designed for Orthodontic purposes are used in orthodontic practice.A basic thorough knowledge is required for proper use of instruments for their purpose without damaging instruments and orthodontic materials. Dr Ravikanth Lakkakula