Orthodontic splints /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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Orthodontic splints /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. • An occlusal appliance, called a splint, is a removable device, usually made of hard acrylic that fits over the occlusal and incisal surfaces of the teeth in one arch, creating precise occlusal contact with the teeth of the opposing arch. It is commonly referred to as a bite guard, night guard, interocclusal appliance, or orthopedic device. www.indiandentalacademy.com
  3. 3. Ideal disc - condyle complex should be In the most antero superior area of glenoid fossa Against the articular eminence Disc interposed Normal neuromusculature Without collateral ligament strain. www.indiandentalacademy.com
  4. 4. During mouth opening: 1.Superior LP stays passive and releases contraction(- ) 2.Inferior LP contracts and pulls the condyle forward.(+) 3. Tension increases in the retrodiskal fibers to keep it aligned with the condyle. During closure reverse happens www.indiandentalacademy.com
  5. 5. Superior LP maintains (+) a controlled contraction to hold the disk forward. The retrodiskal elastic fibers maintain a constant tension against the forward pull of the muscle. SLP muscle is attached to the disk and condyle. ILP is attached to the condyle. www.indiandentalacademy.com
  6. 6. OCCLUSAL INTERFERENCE PROPRIOCEPTIVE PERIODONTAL RECEPTORS ACTIVATES PROTECTIVE REFLEX SYSTEM TO GUARD TEETH LPM POSITIONS THE JAW SO THAT ELEVATORS CLOSE DIRECTLY INTO MAXIMAL OCCLUSAL CONTACT LPM CANNOT RELAX THE PROTECTIVE BRACING CONTRACTION DISPLACEMENT OF MANDIBLE TO M. I. DISPLACEMENT OF CONDYLE DISK ASSEMBLIES www.indiandentalacademy.com
  7. 7. WILLIAMSONS EXPERIMENT (JPD 1983) WILLIAMSON DEMONSTRATED THE PRECISE EFFECT OF OCCLUSAL INTERFERNCE ON MUSCLE COORDINATION AND NORMAL MUSCLE ACTIVITY Using EMG procedure, he showed that interfering contacts on the posterior teeth in any eccentric position caused hyperactivity of the elevator muscles. But if anterior guidance was allowed to disclude all posterior teeth from any contact other than CR, the elevator muscles either stopped or reduced active contraction the moment posterior teeth were discluded. www.indiandentalacademy.com
  8. 8. HOW SPLINT WORKS ? Five distinct theories explain it: 1. Occlusal disengagement theory 2. Vertical dimension theory 3. Maxillomandibular realignment theory 4. TMJ repositioning theory 5. Cognitive awareness theory www.indiandentalacademy.com
  9. 9. The neuromuscular protective mechanism causes a person to accommodate his jaw position to the intercusping of the teeth. The purpose of an anatomic articulator is to eliminate the patient’s neuromuscular response to his existing occlusion. This is the basis for occlusal therapy and TMJ treatment. The Mandibular Position Indicator (M.P.I.) procedure quantifies the differences between the joint-dominated position and the tooth-dominated position of maximum intercuspal position(ICP). Delta Delta Delta Delta Delta H L Y X Z Vertical increase or decrease (incisal pin) Protrusion or retrusive movement (incisal table) Right or left transverse movement Protrusive (+) or (-) retrusive (Horizontal) Compression (+) or (-) distraction (Vertical) www.indiandentalacademy.com
  10. 10. OKESONS CLASSIFICATION OF SPLINT : 1. 2. 3. 4. 5. 6. Stabilization splints Anterior repositioning splints Anterior bite plane Posterior bite plane Pivot splint Soft splint CLASSIFICATION BY SLAVICEK (JCO 1989 FEB 1. 2. 3. 4. 5. Myopathic splint Decompression splint Compression splint Verticalization splint Anterior Repositioning splint www.indiandentalacademy.com
  11. 11. Another way to classify splints based on the arch for which it is fabricated. 1. MAXILLARY SPLINTS A. CENTRIC WITH CUSPID AND ANTERIOR GUIDE RAMP 1. BIOSTAR OR OMNIVAC BASE WITH SELF CURE OCCLUSAL 2. HEAT PROCESSED WITH CLASPS 3. CAST METAL - VITALLIUM OR GOLD B. DISTRACTION OR FORWARD REPOSITIONER 1. BIOSTAR OR OMNIVAC BASE SELF CURE OCCLUSAL 2. HEAT PROCESSED WITH CLASPS C. BITE PLATE D. POSTERIOR BITE PLATE 2. MANDIBULAR SPLINTS A. LOWER CENTRIC SPLINT WITH OR WITHOUR ANTERIOR RAMP B. LOWER PIVOT SPLINT C. LOWER POSTERIOR FORWARD POSITION SPLINT 1. PARTIAL COVERAGE 2. FULL COVERAGE www.indiandentalacademy.com
  12. 12. CLASSIFICATION ACCORDING TO ALEX WILLIS (AJO 1995 MARCH) 1. Flat Plane Splint 2. Anterior Repositioning splint 3. Canine protected splint Dawson classifies splints in two types only, 1. A permissive splint 2. A directive splint www.indiandentalacademy.com
  13. 13. www.indiandentalacademy.com BILATERAL MANIPULATION
  14. 14. www.indiandentalacademy.com
  15. 15. LEAF GAUGE www.indiandentalacademy.com
  16. 16. MESIAL INCLINE DISTAL INCLINE www.indiandentalacademy.com
  17. 17. ANTERIOR STOP IS FLAT & PERPENDICULAR TO LONG AXIS OF MANDIBULAR INCISOR www.indiandentalacademy.com
  18. 18. MAXILLARY FULL ARCH STABILIZATION APPLIANCE www.indiandentalacademy.com
  19. 19. DURING LATEROTRUSIVE MOVEMENT MANDIBULAR CANINE DISOCCLUDES THE POSTERIOR TEETH www.indiandentalacademy.com
  20. 20. DESIGN : 1.In centric relation all posterior mandibular buccal cusps must contact on flat surfaces with even force. 2. During protrusive movement, the mandibular canines must contact the appliance with even force. 3.In any lateral movement only the mandibular canines should exhibit laterotrusive contact on the appliance. 4.The mandibular posterior teeth must contact the appliance only in centric relation closure. 5.In the alert feeding position, the posterior teeth must contact the appliance more www.indiandentalacademy.com prominently than the anterior teeth.
  21. 21. ANTERIOR REPOSITIONING SPLINT Fabrication: 1. The mandible must be directed by the splint to a position that aligns the condyle with the disk. 2.The mandible must be prevented from from closing or clenching distally to the position of disk of alignment. 3.Both anterior and posterior segments should share anchorage for directing the mandible forward. www.indiandentalacademy.com
  22. 22. Mandible assumes forward position Guiding ramp Ramp shifts the mandible forward www.indiandentalacademy.com
  23. 23. BITE RECORDS FOR ANTERIOR REPOSITIONING SPLINT www.indiandentalacademy.com
  24. 24. www.indiandentalacademy.com
  25. 25. www.indiandentalacademy.com
  26. 26. www.indiandentalacademy.com
  27. 27. S SPLINT www.indiandentalacademy.com
  28. 28. www.indiandentalacademy.com
  29. 29. ICP (black dot) above RCP (red dot) indicates compression. Rx : DECOMPRESSION SPLINT www.indiandentalacademy.com
  30. 30. ICP (black dot) below RCP (red dot) indicates distraction. Rx : COMPRESSION SPLINT www.indiandentalacademy.com
  31. 31. Posterior pinpoint centric stops and extreme canine rise with tight vertical element. CANINE PROTECTED SPLINT www.indiandentalacademy.com
  32. 32. ANTERIOR BITE PLANE www.indiandentalacademy.com
  33. 33. www.indiandentalacademy.com
  34. 34. 1. 2. 3. 4. POSTERIORS ARE INTRUDED BY ELEVATOR MUSCLES UPPER INCISORS STARTS TO MOVE LINGUALLY LOWER INCISORS MIGHT MOVE LABIALLY & SUPRAERUPT LINGUALIZED UPPER INCISOR INTERFERE WITH ARC OF CLOSURE & FORCE THE CONDYLE TO DISTALIZE www.indiandentalacademy.com
  35. 35. POSTERIOR BITE PLANE & EFFECT AFTER 1 YEAR WEAR www.indiandentalacademy.com
  36. 36. Bite Plane anchored in headgear tubes. www.indiandentalacademy.com
  37. 37. Full Arch Maxillary Removable Bite Splint www.indiandentalacademy.com
  38. 38. I. Inclined plane for the alignment of the upper front teeth. II. Biting splint for the nivellisation of the compensating curve. www.indiandentalacademy.com
  39. 39. POSTERIOR PIVOTING APPLIANCE LOADS THE CONDYLE IT DOESNOT DISTRACT THE CONDYLE www.indiandentalacademy.com
  40. 40. GIC PIVOT SPLIT Four balanced points of maxillomandibular contact in centric relation: two articular disc assemblies and two glass ionomer padswww.indiandentalacademy.com on lower first molars.
  41. 41. GIC PIVOT SPLINT Case with deep overbite and advanced attrition of incisal and cusp tips. Glass ionomer splint allows immediate placement of full fixed appliances while opening bite and establishing centric relation. www.indiandentalacademy.com
  42. 42. DAWSONS CLASSIFICATION OF SPLINT PERMISSIVE SPLINT DIRECTIVE SPLINT www.indiandentalacademy.com
  43. 43. FOUR TYPES OF PERMISSIVE SPLINT A. ANTERIOR B PLANE B. POSTERIOR B PLANE C & D UPPER AND www.indiandentalacademy.com LOWER FULL OCCLUSAL SPLINT
  44. 44. All tooth inclines are separated or covered with smooth plastic Occlusion is blocked because of smooth gliding surface Neuromuscular reflex controlling the closure into maximum intercuspation is lost Muscles function according to their own coordinated interaction (muscle deprogrammers ) If the condition of articular components permit condyle is then allowed to return to their correct seated position ( centric relation ). www.indiandentalacademy.com
  45. 45. www.indiandentalacademy.com
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  48. 48. www.indiandentalacademy.com
  49. 49. www.indiandentalacademy.com
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  54. 54. www.indiandentalacademy.com
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  56. 56. www.indiandentalacademy.com
  57. 57. www.indiandentalacademy.com
  58. 58. www.indiandentalacademy.com
  59. 59. www.indiandentalacademy.com
  60. 60. www.indiandentalacademy.com
  61. 61. Thank you For more details please visit www.indiandentalacademy.com www.indiandentalacademy.com
  62. 62. www.indiandentalacademy.com

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