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Setting Maxillary Anterior Teeth for aesthetics and phonetics.ppt
- 1. Setting Anterior Teeth Esthetics& Phonetics
- 2. Look for Symmetry Viewfrom anterior, occlusal View from many angles
- 3.
- 4. Facial Asymmetry 2 LeftSides “Normal” 2 Right Sides
- 5. Smile Asymmetry 2 LeftSides “Normal” 2 Right Sides
- 6. Setting Anterior Teeth –Incisal edges of central incisors & canines at level of the occlusal plane – Laterals placed approximately 0.5 mm above the occlusal plane
- 7. Cervical necks tiltposteriorly from the central incisor to the canine
- 8. The greatest height ofthe free gingival margin is slightly distal to the mesiodistal center of the tooth
- 9. Setting Mandibular Anteriors Loweranterior teeth incline similar to the maxillary teeth
- 10. Setting Mandibular Anteriors •Incisal edges are placed at the same level • Even with the occlusal plane
- 11. Setting Mandibular Anteriors •No overbite for monoplane or lingualized setups
- 12. Canines should betilted more posteriorly than other teeth, with a more prominent cervical neck
- 13. Bucco-Lingual Tilt Maxillary AnteriorTeeth • Facial surface of central is perpendicular occlusal plane • Neck of lateral is depressed • Neck of canine is prominent Central Canine
- 14. Bucco-Lingual Tilt Mandibular AnteriorTeeth • Central is proclined • Lateral is more upright • Canine has a prominent neck Central Canine
- 15. Anterior Tooth Setup •Check symmetry with reference lines • Anterior teeth don’t contact in centric position • Grazing contacts in excursions Overjet = 2mm Overbite = 0mm
- 16. No Anterior Contact inCentric Correct Insufficient Excessive
- 17. Canine Offset • Checkfor one half tooth offset between maxillary & mandibular teeth • Ensures posterior teeth have normal cusp to fossa relationship for lingualized occlusion
- 18. Cannine Offset Correct Insufficient Improper offset results ina space or half tooth replacement
- 19. Phonetic Assessment • Maxillarycentrals should lightly touch vermilion border of lower lip for ‘F’, ‘V’ sounds • ‘S’ sounds - incisal edges should approximate each other
- 20. Intraoral Assessment of AnteriorTeeth Incisal edges of maxillary incisors should follow line of lower lip when smiling (‘smile line’)
- 21.
- 22. Placing & Moving AnteriorTeeth • Crown removing forceps to bodily move and tilt teeth • Grind record base/tooth if record base is impairing ability to position properly
- 23. Intraoral Assessment of AnteriorTeeth • Nasolabial angle ≈ 90° • If insufficient support, the vermilion border will be reduced
- 24. Intraoral Assessment of AnteriorTeeth • Junction of oral mucosa (glossy) should just be visible when lips are slightly separated • If not visible - insufficient support • Lips meet at junction of oral & transitional epithelium
- 25. Intraoral Assessment of AnteriorTeeth Excessive block-out of record base will push the lip out at the height of the vestibule, distorting appearance
- 26. Lisping • Too muchhorizontal overlap • Can’t approximate incisal edges • Anterior teeth too far labially • Spaces allow air leakage
- 27. Lisping • Palatal contourtoo constricted • Remove wax to provide more room • Arch form too broad • Experiment with placement of wax
- 28. Anterior Teeth Not IdenticalPosition of Natural Teeth • Slightly altered position from precursors • Denture stability compromised • No anchorage from roots
- 29. Avoid the ‘DentureSmile’ • Teeth too small • Teeth not showing • Too straight across anterior • “Chiclets”
- 30. Central & lateral incisorsmust begin to turn along the curvature of the arch
- 31.
- 32. Facial Support, OVD& Tooth Setup Can Dramatically Affect Appearance
- 33. Effect of IncisorLength
- 34. Variation of Appearancewith Different Dentures
- 35. Variation of Appearance withDifferent Dentures