- Anterior teeth are primarily selected based on esthetic requirements while posterior teeth are selected based on masticatory function and occlusion. - Factors to consider in anterior tooth selection include morphology, size, color, placement based on anatomical landmarks and guides. - Careful evaluation of the patient's existing dentition, facial characteristics, and preferences are important in selecting the right anterior teeth.

1. 11. Anterior Tooth Selection Eleni Roumanas DDS Division of Advanced Prosthodontics, Biomaterials and Hospital Dentistry UCLA School of Dentistry and Frank Lauciello DDS Ivoclar Vivadent This program of instruction is protected by copyright ©. No portion of this program of instruction may be reproduced, recorded or transferred by any means electronic, digital, photographic, mechanical etc., or by any information storage or retrieval system, without prior permission.

6. Dentogenics/Dynesthetic concepts of Fisher and Frusch : They integrated the selection of teeth into an esthetic system governed by the age , sex and personality of the pt . a) Sex: male - rugged with square teeth & bold central incisors female - pronounced curvatures, rounded point angles b) Personality: vigorous or delicate “ Personality tooth ”-the maxillary lateral incisors vary more in size, form and position than any other tooth c) Age: Young - tapered, ovoid, rounded teeth Middle Old - square, sharp corners Tooth Form/Mold:

15. Color Or Shade Of Anterior Teeth The Chromascop ® is the shade standard for the Ivoclar Vivadent Product lines including IPS Empress, IPS design, composite restorative Materials etc. Shade Comparison Chart A-D Shade A1 A2 A3 A3.5 A4 B1 B2 B3 B4 C1 C2 C3 C4 D2 D3 D4 Chromascop 120 130 210 230 340 110 040 130 210 310 --- 430 510 --- --- 420 ---

17. - positioned in the same general area on the natural teeth -this position was tentatively established during the clinical refinement of the maxillary occlusal rim to provide adequate lip support and proper phonetics -used to its maximum potential when accomplished at chairside -the arrangement has to fulfill certain biomechanical needs as well as esthetic ones Placement of Maxillary Anterior Teeth

21. Labial incisal distance- This is generally 8-9 mm anterior to the incisive papilla. Anterior Tooth Placement

23. Average Value Positions Labial incisal position Female Young 8 Middle 7 Old 6 Male Young 6 Middle 5 Old 4 Incisal length is on the average 22mm from the labial sulcus

24. Patient Factors: Lip Length vs. Incisal Display Sex & Age Female Male Young +2 +1 Middle +1 0 Old 0 -1 Vig, JPD 1978 Lip Length Incisal Display 10-20mm 3-4mm 20-25mm 2mm 26-30mm 1mm 30 & over 0

27. - the anterior teeth and tongue act as a part of the valving mechanism which modify the flow of air to produce speech sounds Labial sounds: “p” “b” -if the lips are not supported properly by the teeth these sounds may be defective Labiodental sounds: “f” “v” -are produced by contact between the maxillary incisors and the posterior one-third of the lower lip Linguodental sounds: “th” -are produced by extending the tip of the tongue 3-6 mm beyond the incisal edges of the upper & lower anterior teeth Phonetic Considerations

29. Linguopalatal sounds: “s” -the “s” sound is made by contact between the tip of the tongue and the palate at the rugae area with a small space for the escape of air - if the space is too small a whistle usually results and if the space is too broad an thin, the “s” sound is replaced by th “sh” sound which sounds like a lisp Phonetic Considerations

31. Ivoclar Denture Tooth Molds

33. Ivoclar Denture Tooth Molds Ivoclar anterior teeth are catagorized into square, tapering and ovoid shapes. Square Tooth Molds: With this angular shape, the central incisor is dominant and the gingivo-incisal curvature is moderate. The square facial shape offers maximum light deflection and creates a bold effect. Tapering: Characterized by rounded contours which taper towards the cervical ridge. Moderate gingivo-incisal curvature. Large triangular incisor slightly triangular in shape. Ovoid: The teeth have a pronounced gingivo-incisal curvature, which tends to disperse the light reflection and create a softened appearance.

34. Interproximal embrasures The proximal contact points of Ivoclar teeth are in the same position as in their natural counterparts. They are placed in the incisal third instead of the mesial edge which helps to individualize each tooth. Ivoclar Denture Tooth Molds

35. Mesial incisal line angle “bold” Ivoclar Denture Tooth Molds “ the ideal artificial tooth should be a reflection of its natural model”

36. “ the ideal artificial tooth should be a reflection of its natural model” Height of contour Ivoclar Denture Tooth Molds

37. Distinct cervical margin Ivoclar Denture Tooth Molds “ the ideal artificial tooth should be a reflection of its natural model ”

38. “ the ideal artificial tooth should be a reflection of its natural model ” Mandibular incisal edge wear Ivoclar Denture Tooth Molds

39. The End!