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8/13/2019 14. Set Anterior Teeth_1
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Setting Anterior Teeth
Esthetics & Phonetics
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Look for Symmetry
View from anterior,
occlusalView from many
angles
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Symmetry
Perfect
Symmetry
Gross
Asymmetry
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Facial Asymmetry
2 Left Sides “Normal” 2 Right Sides
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Smile Asymmetry
2 Left Sides “Normal” 2 Right Sides
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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
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Cervical necks tilt posteriorly from the central incisor to the canine
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The greatest height
of the free gingival
margin is slightly
distal to themesiodistal center
of the tooth
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Setting Mandibular Anteriors
Lower anterior
teeth inclinesimilar to the
maxillary teeth
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Setting Mandibular Anteriors
• No overbite for
monoplane orlingualized setups
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Canines should be tilted more
posteriorly than other teeth, with a
more prominent cervical neck
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Bucco-Lingual Tilt
Maxillary Anterior Teeth
• Facial surface of central is
perpendicular occlusal plane
• Neck of lateral is depressed
• Neck of canine is prominent
Central Canine
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Bucco-Lingual Tilt
Mandibular Anterior Teeth
• Central is proclined
• Lateral is more upright
• Canine has a
prominent neck
Central Canine
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Anterior Tooth Setup
• Check symmetry withreference lines
•Anterior teeth don‟t contactin centric position
• Grazing contacts inexcursions Overjet = 2mm
Overbite = 0mm
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No Anterior
Contact in Centric
Correct
Insufficient
Excessive
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Cannine
Offset
Correct
Insufficient
Improper offset
results in a spaceor half tooth
replacement
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Phonetic Assessment
• Maxillary centrals shouldlightly touch vermilionborder of lower lip for „F‟,„V‟ sounds
• „S‟ sounds - incisal edgesshould approximate each
other
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Intraoral Assessment of
Anterior Teeth
Incisal edges of
maxillary incisors
should follow line oflower lip when
smiling („smile line‟)
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Follow the
„Smile line‟
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Placing & Moving
Anterior Teeth
• Crown removing forceps to
bodily move and tilt teeth
• Grind record base/tooth if
record base is impairing ability
to position properly
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Intraoral Assessment of
Anterior Teeth
• Nasolabial angle ≈ 90°
•
If insufficient support,the vermilion border
will be reduced
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Intraoral Assessment of
Anterior Teeth• Junction of oral mucosa
(glossy) should just be
visible when lips are
slightly separated
• If not visible - insufficient
support
•
Lips meet at junction oforal & transitional
epithelium
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Intraoral Assessment of
Anterior Teeth
Excessive block-out of record base willpush the lip out at the height of the
vestibule, distorting appearance
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Lisping
• Too much horizontal overlap
• Can‟t approximate incisal edges
• Anterior teeth too far labially
• Spaces allow air leakage
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Avoid the „Denture Smile‟ • Teeth too small
• Teeth not showing
• Too straight across
anterior
•
“Chiclets”
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Central & lateral
incisors must
begin to turn
along thecurvature of the
arch
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Facial Support, OVD & Tooth Setup
Can Dramatically Affect Appearance
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Effect of Incisor Length
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Variation of Appearance with
Different Dentures
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Variation of
Appearance with
Different Dentures
