Occlusion n articulatirs/ orthodontic continuing education

707
-1

Published on


Indian Dental Academy: will be one of the most relevant and exciting training center with best faculty and flexible training programs for dental professionals who wish to advance in their dental practice,Offers certified courses in Dental implants,Orthodontics,Endodontics,Cosmetic Dentistry, Prosthetic Dentistry, Periodontics and General Dentistry.

Published in: Education
0 Comments
1 Like
Statistics
Notes
  • Be the first to comment

No Downloads
Views
Total Views
707
On Slideshare
0
From Embeds
0
Number of Embeds
0
Actions
Shares
0
Downloads
0
Comments
0
Likes
1
Embeds 0
No embeds

No notes for slide

Occlusion n articulatirs/ orthodontic continuing education

  1. 1. Introduction toIntroduction to OcclusionOcclusion INDIAN DENTAL ACADEMY Leader in continuing dental education www.indiandentalacademy.com www.indiandentalacademy.com
  2. 2. What is this course about ?What is this course about ? 1.1. Analyze dynamics of teeth, TMJ, & neuromuscular systemAnalyze dynamics of teeth, TMJ, & neuromuscular system 2.2. Utilize a semi-adjustable articulator to assess jaw motionUtilize a semi-adjustable articulator to assess jaw motion 3.3. Design an optimum occlusal schemeDesign an optimum occlusal scheme www.indiandentalacademy.com
  3. 3. Why am I taking this course ?Why am I taking this course ? ….to understand the elements of an ideal occlusal system in order to differentiate between a functional and dysfunctional occlusal system and decide on an occlusal design prior to beginning restorative treatment www.indiandentalacademy.com
  4. 4. What should I already know ?What should I already know ? 1. Teeth by Name & Number & Form 2. Working / Nonworking Cusps 3. Excursive Pathwayswww.indiandentalacademy.com
  5. 5. Mesial Distal Buccal Palatal/ Lingual Question #1: Identify tooth by Name & Number.Question #1: Identify tooth by Name & Number. www.indiandentalacademy.com
  6. 6. Question #2: Identify tooth by Name & Number.Question #2: Identify tooth by Name & Number. Mesial Distal Buccal Palatal/ Lingual www.indiandentalacademy.com
  7. 7. Question #3: Name the excursive pathway shown by the arrows. www.indiandentalacademy.com
  8. 8. Question #4:Question #4: Identify at least 3 supporting cusps from the diagramIdentify at least 3 supporting cusps from the diagram given a Class I occlusion.given a Class I occlusion. a b c d e f g www.indiandentalacademy.com
  9. 9. Question # 5: Is this a right or left non-working movement ?Question # 5: Is this a right or left non-working movement ? www.indiandentalacademy.com
  10. 10. Basic TerminologyBasic Terminology Glossary of Prosthodontic Terms 1999Glossary of Prosthodontic Terms 1999 OcclusionOcclusion the static relationship between the incising orthe static relationship between the incising or masticating surfaces of the maxillary or mandibularmasticating surfaces of the maxillary or mandibular teeth or tooth analoguesteeth or tooth analogues Occlusion AnalysisOcclusion Analysis the static relationship between the incising orthe static relationship between the incising or masticating surfaces of the maxillary or mandibularmasticating surfaces of the maxillary or mandibular teeth or tooth analoguesteeth or tooth analogues www.indiandentalacademy.com
  11. 11. MIP (Maximal Intercuspal Position)MIP (Maximal Intercuspal Position) tthe complete intercuspation of the opposing teeth independent ofhe complete intercuspation of the opposing teeth independent of the condylar position, sometimes referred to as the best fit of thethe condylar position, sometimes referred to as the best fit of the teeth regardless of the condylar positionteeth regardless of the condylar position CR (Centric Relation)CR (Centric Relation) 1.1. the maxillomandibular relationship in which the condylesthe maxillomandibular relationship in which the condyles articulate with the thinnest avascular portion of their respectivearticulate with the thinnest avascular portion of their respective disks within the complex in the anterior-superior position againstdisks within the complex in the anterior-superior position against the shapes of the articular eminancesthe shapes of the articular eminances Basic TerminologyBasic Terminology Glossary of Prosthodontic Terms 1999Glossary of Prosthodontic Terms 1999 www.indiandentalacademy.com
  12. 12. ArticulatorArticulator a mechanical instrument that represents the TMJs and jaws toa mechanical instrument that represents the TMJs and jaws to which maxillary and mandibular casts may be attached towhich maxillary and mandibular casts may be attached to simulate some or all mandibular movementssimulate some or all mandibular movements Jaw RecordJaw Record a registration of any positional relationship (e.g. vertical,a registration of any positional relationship (e.g. vertical, horizontal or lateral position) of the mandible relative to thehorizontal or lateral position) of the mandible relative to the maxillamaxilla Basic TerminologyBasic Terminology Glossary of Prosthodontic Terms 1999Glossary of Prosthodontic Terms 1999 www.indiandentalacademy.com
  13. 13. ClinicalClinical EvaluationEvaluation LaboratoryLaboratory AnalysisAnalysis OcclusalOcclusal DesignDesign www.indiandentalacademy.com
  14. 14. Denar Mark IIDenar Mark II • Semi-adjustable articulator • Arcon (articulator/condyle) • Facebow • lateral or protrusive checkbites • Fixed intercondyar distance www.indiandentalacademy.com
  15. 15. Mandibular Border MovementMandibular Border Movement • Outer limits of all excursive mandibular movements are known as border movements. (e.g. location of mandible from its most retruded position to its most forward and most R/L lateral positions) • Mandibular functional movements are contained within these border movements. • Border movements on a patient are limited by ligaments and are highly repeatable • Jaw records/registrations of these borders are used to program the various settings on articulators Schillingburg, Herbert T. Fundamentals of Fixed Prosthodontics.3rd ed., Chapter 3. www.indiandentalacademy.com
  16. 16. Jaw Registration ofJaw Registration of Condylar MovementsCondylar Movements What is it and why do we record it?What is it and why do we record it? it is a recording of the paths/postions of the condyles during border movements that are recorded in order to program the articulator to simulate the patient’s condylar movements How is it recorded ?How is it recorded ? 1. Pantographic tracing to program a fully-adjustable articulator 2. Interocclusal records to program a semi-adjustable articulator Facebow record CR record MIP record Protrusive checkbite Lateral checkbite Schillingburg, Herbert T. Fundamentals of Fixed Prosthodontics.3rd ed., Chapter 3.www.indiandentalacademy.com
  17. 17. Jaw/Interocclusal RecordsJaw/Interocclusal Records (semi-adjustable articulator)(semi-adjustable articulator) 1.1. Facebow RecordFacebow Record to record the spatial relationship of the maxillary arch to an anatomic reference point for the transfer of the maxillary cast to an articulator 2. Centric Interocclusal Record to record the relationship between the maxillary and mandibular arches when the condyles are in their most anterosuperior position in the glenoid fossae 3. Eccentric Interocclusal Records a. Protrusive record: to adjust the condylar inclination (e.g. the angle at which the condyle descends along the articular eminance) b. Lateral record: to set the Bennett angle (e.g. the medial movement of the balancing/orbiting condyle as measured from the saggital plane) Schillingburg, Herbert T. Fundamentals of Fixed Prosthodontics.3rd ed., Chapter 3-5. www.indiandentalacademy.com
  18. 18. Denar Slidematic FacebowDenar Slidematic Facebow Facebow Record: registration of the spatial relationship of the maxillary arch to an anatomic reference point for the transfer of the maxillary cast to an articulator www.indiandentalacademy.com
  19. 19. Facebow RegistrationFacebow Registration • This registration relates the maxillary arch to the horizontal hinge axis of the patient. • On a fully adjustable articulator, the “true hinge axis” must be located • On a semi-adjustable articulator, the “arbitrary hinge axis” is used, and this is determined by the manufacturer of the facebow and articulator system. www.indiandentalacademy.com
  20. 20. True Hinge AxisTrue Hinge Axis • Requires hinge axis locator • Used with fully adjustable articulator • Patients used to be tattooed so that the facebow could be repeated www.indiandentalacademy.com
  21. 21. Arbitrary Hinge AxisArbitrary Hinge Axis • Located with the help of the Denar ruler. • The arbitrary hinge axis is based upon the average location as determined by the manufacturer www.indiandentalacademy.com
  22. 22. Facebow Registration & TransferFacebow Registration & Transfer Facebow Record: registration of the spatial relationship of the maxillary arch to an anatomic reference point for the transfer of the maxillary cast to an articulatorwww.indiandentalacademy.com
  23. 23. Mechanical Systems used toMechanical Systems used to Replicate Mandibular MovementReplicate Mandibular Movement The following pictures of articulators are from the notable collection shown at the Smithsonian Museum in Washington D.C. given by Dr. Charles Paraskis. www.indiandentalacademy.com
  24. 24. ArticulatorArticulator Class IClass I-- a simple holding instrument capable of accepting a single static registration; vertical motion is possible (e.g .non-adjustable) Class IIClass II--an instrument that permits horizontal as well as vertical motion, but does not orient the motion to the temporomandibular joints Class IIIClass III--an instrument that simulates condylar pathways by using averages or mechanical equivalents for all or part of the motion; allow for orientation of the casts relative to the joints and may be arcon or nonarcon instruments (e.g. semi-adjustable) Class IVClass IV--an instrument that will accept three dimensional registrations; allow for orientation of the casts relative to the joints and simulation of mandibular movements (e.g. fully adjustable) Basic TerminologyBasic Terminology Glossary of Prosthodontic Terms 1999Glossary of Prosthodontic Terms 1999 www.indiandentalacademy.com
  25. 25. Plaster ArticulatorPlaster Articulator Phillip Pfaff 1756: Plaster extensions on the distal portions of the casts were grooved for articulation Class IClass I-- a simple holding instrument capable of accepting a single static registration; vertical motion is possible (e.g .non-adjustable)www.indiandentalacademy.com
  26. 26. ““Barn Door Hinge” ArticulatorBarn Door Hinge” Articulator • Described by J.B. Garriot in 1805 • Each arm was bent at 90 degrees and capable of opening and closing in a hinge movement Class IClass I-- a simple holding instrument capable of accepting a single static registration; vertical motion is possible (e.g .non-adjustable) www.indiandentalacademy.com
  27. 27. Gysi Simplex ArticulatorGysi Simplex Articulator • Designed by Gysi in 1914 • Arcon instrument • Fixed intercenter distance (e.g. intercondylar) • Fixed condylar path 30ο • Eccentric motion unrelated to patient motion (Class II, Subdivision A) Class IIClass II--an instrument that permits horizontal as well as vertical motion; but does not orient the motion to the temporomandibular joints www.indiandentalacademy.com
  28. 28. Monson Articulator 1918Monson Articulator 1918 • George Monson orthodontist from Minneapolis,MN • Postulated that the center of all mandibular motion was located in the center of the sphere with a 4 inch radius • Eccentric motion based on theories of arbitrary motion (Class II, Subdivision B) Class IIClass II--an instrument that permits horizontal as well as vertical motion; but does not orient the motion to the temporomandibular joints www.indiandentalacademy.com
  29. 29. Hanau H series 1923Hanau H series 1923 • Designed by Hanau when dental community did not accept the Kinoscope • This instrument accepted a protrusive “checkbite” but lateral settings were calculated : L=H/8+12 • Class III Subdivision A (e.g.protrusive record accepted but calculations for rest of motion) Class IIIClass III--an instrument that simulates condylar pathways by using averages or mechanical equivalents for all or part of the motion www.indiandentalacademy.com
  30. 30. Denar Mark IIDenar Mark II Semi-Adjustable ArticulatorSemi-Adjustable Articulator • Semi-adjustable articulator • Arcon (articulator/condyle) • Facebow • lateral or protrusive checkbites • Fixed intercondyar distance Class IIIClass III--an instrument that simulates condylar pathways by using averages or mechanical equivalents for all or part of the motionwww.indiandentalacademy.com
  31. 31. Denar Fully Adjustable ArticulatorDenar Fully Adjustable Articulator • Variable intercondylar distance • Variable condylar inclination • Variable Bennett angle • Mechanical incisal pin • Accepts pantographic tracing Class IVClass IV--an instrument that will accept three dimensional registrations; allows for orientation of the casts relative to the joints and simulation of mandibular movements www.indiandentalacademy.com
  32. 32. Thank you For more details please visit www.indiandentalacademy.com www.indiandentalacademy.com

×