4 - Natural Esthetics and Smile Design, Lab 4 (Setting Anteriors) Flashcards

1
Q

when do you complete gothic arch tracer

A

same appointment as anterior try in

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2
Q

how do you measure width of anterior teeth

A

with flexible ruler, distal of canine to distal of canine

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3
Q

what tool can be used to select anterior teeth

A

Trubyte tooth selector

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4
Q

what shapes are ivoclar anterior teeth categorized as

A

square, tapering, and ovoid shapes

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5
Q

describe square tooth molds

A
  • central incisor: dominant
  • gingivo-incisal curve: moderate
  • shape offers maximum light deflection and creates bold effect
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6
Q

describe tapering tooth molds

A
  • rounded contour
  • taper towards cervical ridge
  • gingivo-incisal curvature: moderate
  • large triangular incisor slightly triangular in shape
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7
Q

describe ovoid tooth molds

A
  • gingivo-incisal curvature: pronounced
    disperse light reflection to create softened appearance
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8
Q

“see with the ___, observe with the ___”

A

eye; mind

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9
Q

what affect dynesthetics? how many are there?

A

SPA: sex, personality, age
there are 17

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10
Q

difference between male and female teeth

A

male-rugged with square teeth & bold central incisors
female-pronounced curvatures, rounded point angles

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11
Q

what is the personality tooth?

A

maxillary lateral incisors (vary more in size, form, and position than any other tooth)

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12
Q

different in teeth based on age (young vs old)

A

Young-tapered, ovoid, rounded teeth
Older-square, sharp corners

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13
Q

describe delicate characteristics

A

~Rounded arch form
~Rounded corners
~Anteriors closely follow the lower lip
~Laterals overlap centrals
~Smaller laterals and cuspids
~Sharp Canines

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14
Q

describe rugged characteristics

A

~ Angular outlines
~Larger laterals and canines
~Square arch form
~Centrals overlap laterals
~Blunt canines

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15
Q

should teeth gradually lower OR rise along the occlusal plane? why?

A

RISE! to give the impression of distance

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16
Q

the buccal corridor is controlled by placement of what tooth?

A

canine

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17
Q

what is the principle function of maxillary anterior teeth?

A

esthetics

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18
Q

what is the secondary function of maxillary and mandibular anterior teeth

A

phonetics

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19
Q

the labial portion of CI is how many mm anterior to incisive papilla

A

8-10 mm

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20
Q

incisal length and width can be measured with what

A

alma gauge

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21
Q

what is the incisal display for the following lip lengths?
10-20mm
20-25mm
26-30mm
30 & over

A

10-20mm: 3-4mm
20-25mm: 2mm
26-30mm: 1mm
30 & over: 0

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22
Q

who shows less incisal display

A

older people

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23
Q

what produces the frigative sounds

A

upper teeth contact the wet-dry line of lower lip during speech productions of “f” and “v” sounds

produced by anterior teeth

24
Q

what make “s” sounds

A

linguopalatal - made by contact between tip of tongue and palate of rugae area w/ small space for escape of air

25
Q

what happens if “s” sound space is too small

A

whistle usually results and if the space is too broad and thin, the “s” sound is replaced by “sh” sound (a lisp)

26
Q

describe the lateral incisor placement in males vs females

A

males: LINGUOversion
females: LABIOverision

27
Q

arrangement considerations of mandibular anterior teeth

A
  1. Vertical overlap
  2. Horizontal overlap
  3. Antero-posterior inclination in proximal view
  4. Inclination of long axes
28
Q

what is the Class 1 relationship

A

central incisors perpendicular to ridge

29
Q

what is the Class 2 relationship

A

central incisors slightly palatally inclined

30
Q

what is class 3 relationship

A

central incisors slightly labially inclined

31
Q

is tilting of the centrals acceptable?

A

NO! esthetically unacceptable

32
Q

describe what happens when maxillary centrals are rotated towards a distal flare

A

creates a highlight on center of tooth, giving a boldness to set up

33
Q

is mesial flare on centrals esthetically acceptable?

A

NO!

34
Q

can you characterize denture by altering neck position of centrals?

A

no because it will make one central look light and the other look dark (deflection neck out vs. reflection neck in)

35
Q

what should length of max central incisor be

A

same length as wax rim

36
Q

how to position lateral maxillary teeth for SOFT characteristic (labial palatal inclination, M-D inclination, rotation, length)

A

L-P: labial (neck in)
M-D: long axis of tooth inclined distally
Rotation: mesial flare
Length: 1-2 mm (At least 0.5 mm) than phonetic rim

37
Q

how to position lateral maxillary teeth for BOLD characteristic (labial palatal inclination, M-D inclination, rotation, length)

A

L-P: perpendicular
M-D: none
Rotation: distal flare
Length: same length as phonetic rim

38
Q

how should maxillary canines inclnie

A

palatal inclination (neck out)

39
Q

how many degree distal inclination of max canine

A

15 degree (long axis of canine inclined toward distal)

40
Q

should you do mesial or distal flare for max canine rotation

A

mesial flare

41
Q

what tooth is always shorter then canine or central

A

lateral

42
Q

what tooth is always longer than the premolar

A

canine

43
Q

mandibular anterior teeth should maintain how much horizontal and vertical overlap?

A

1 mm horizontal
1 mm vertical

44
Q

what is the purpose of drawing a blue line on the inside of the land area of casts? why?

A

teeth must not be set facial to this line because it will make the denture unstable

45
Q

midline on lab project is drawn where? how is this different from real life appointment?

A
  • midline matches buccal frenum
  • midline in real life marked clinically during jaw relation records appointment
46
Q

when placing the first tooth on max arch (#9) where should it be located

A

next to midline, at height of wax rim and width

47
Q

what to use as reference for #8

A

parallel to #9, incisal edges of both teeth should touch flat plane, long axis of both teeth should be straight/parallel with each other

48
Q

incisal edge of laterals are ___ more apical than central

A

0.5mm

49
Q

long axis of laterals should be inclined [mesial or distal] compared to centrals

A

distally

50
Q

maxillary canines should be even/level with what teeth

A

centrals

51
Q

after placing maxillary teeth, what do you check

A
  1. pin and zero
  2. pin touches/holds articulating paper on incisal guide
  3. mx posterior wax rim still touching MD wax rim
52
Q

where should you draw lines on mandibular cast/wax rim? what is this for

A
  • center of mandibular ridge on both sides (mark at top of retromolar pad and near canine area)
  • connect the line
  • this is where MAXILLARY LINGUAL CUSPS will eventually go and central grooves of mandibular posterior teeth
53
Q

lateral max should be angled mesial or distal

A

DISTAL

54
Q

incisal edge of mand canine should be tipped how

A

distally

55
Q

should all teeth sit flat with plane on mandibular

A

yes