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Fixed Prosth 3rd year > anterior - zweig > Flashcards

anterior - zweig Flashcards

1
Q

in general patietns are very

A

demanding and high expectations

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2
Q

old bleach was

A

35% hydrogen peroxide - superoxol

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3
Q

aesthetics same as cosmetics?

A

different

aesthics - fits into the environment

  • cosmetics- fitting them into the envionment
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4
Q

cosmetic dentistry definition

A

generally used to refer to ANY DENTAL WORK that improves apearance (though not necessarily the functionality ) of teeth, gums, and / or bite
-primarily focuss on imprvement DENTAL AESTHETICS in color, position, shape, size, alignment and overall smile apearance

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5
Q

aesthetics is

A

the formal study of the prinicples of art and beauty

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6
Q

shows picture of gold fillings is this aesthtic?

A

no?

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7
Q

picture of gold crowns cosmetic?

A

yes - changed whole environment

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8
Q

old guy with improvements looks like new crowns -

A

cosmetic dentistry

- argument is some people age does not have teeth look like that

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9
Q

how do you asses aesthetic risk? whose risk is it?

A

patient point of view vs ours

  1. physical characteristics
    - high / low lip line
    - narow / wide smile
  2. emotional characteristics
    - does pt think it will change their life?
  3. level of patient demand
    - how fussy is pt.
    - is patient holding hand mirror 1/2 inch from their nose
  4. skill of practitioner
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10
Q

high lip line

A

a 2mm or above display of gingival tissues

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11
Q

medium lip line

A

gingival margin and the lip line is congruent

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12
Q

low lip line

A

a 2 mm or more below the cervical line of the upper central incisors

less of an aesthetic risk at the margins

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13
Q

what is absolutley essential when doing a cosmetic case?

A

communication and informed consent

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14
Q

aesthetic zone?

A

where does it begin and end?
physical characteristics
- wide/ narrow smile
- patient demand

really depends on patient
- can be whole mouth with dentistry today

wide smile – will show more teeth in buccal vestibule

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15
Q

importance of shape

golden proportion?

A

height and width of teeth relation

a/b = (a+b) / a = 1.6

centrals = 1.6 
laterals = 1 
canines = .6

length width ratio of 75-80%
wifth 8 mm then length 10 mm

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16
Q

most important aspect of cosmetic - arguably

A

shape

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17
Q

central incisor width / height ration

if too short?
if too long?
implication of wear?

A

75 - 80 %

as teeth get worn down gets closer to 1:1 ratio

over 80% eans that the tooth is too short

under 75 % means shows a long tooth

10.3 vs 7.9
or 11mm with 8.5 mm width

width remains constant with wear **

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18
Q

male vs female

A

variable
male – generally flatter with squarer incisal angles

female - usually smaller with rounded incisal angles

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19
Q

embrasure space flow

A

sould follow a natural and progressive increase in size from the central to the cuspid

can look like one single tooth without

20
Q

black triangles mainly correlated to

A

location of contact point

21
Q

implication on the location of the contact point

A

** have to know this — according to tarnow - when the distance from the contact point to the alveolar bone was less or equal to 5 MM, THE PAPILLA WAS PRESENT 98% OF THE TIME

  • while at 6mm it dropped to 56% and at 7mm it was only present 27% of the time
22
Q

contact point location in central

A

incisal 1/3

lateral - more apical - apical to the contact point
cuspid - more apical

and incisal embrasure increaseing the more distal you go

23
Q

axial inclination of teeth

A

all teeth should have a MESIAL INCLINATION – point towards the belly button

this should be MORE EXAGGERATED as we go more posteriorly

  • SUBTLE AT CENTRALS and less so on the canines
24
Q

apex of giniva on canines and centrals?

on laterals?

A

on laterals the apex of gingiva should be towards the mesial

on canines and centrals - should be towards the distal

25
Q

line angle on central vs lateral

A

central - line angles are more towards the contact / proximal and on laterals they are more exxagerated

26
Q

central incisor features

A

total symmetry

midline V with line angles

defined “grind zone”

mesial inclination

slight longer than the lateral incisors

27
Q

lateral incisors features

A

set lingual to central incisor plane

line angles more toward center of tooth

larger “grind zone”

mesial inclination

slightly shorter than centrals

28
Q

grind zone?

A

find the line angle and proximal contact and that area can contour to create better shape if think tooth looks too flat

connecting the two lines

line angle to the proximal contact

29
Q

buccal anatomy also related to

A

reflective pattern

want to reflect light in same pattern

30
Q

hints for taking shade

A
  1. always take shade at the beginning of the appointment
  2. do not stare at the teeth or shade tab for more than a couple of seconds at a time
  3. take a shade near a window if possible
  4. dont use the dental light
  5. use color corrected light bulbs in the room
  6. shade mapping
31
Q

tooth symmetry

A

most important is central

some lateral incisors - have assmetry here

older - less symmetry

32
Q

gingival symmetry

A

should follow the upper lip

the canines and centrals should be the SAME HEIGHT

the laterals should be slighlty more incisal

33
Q

achieve gingival symmetry

A

often requires crown lenghtening

34
Q

gingval biotype implication on material

A

thin and thick

the more thin – the more you need to make sure you have a translucent biotype

thin - thin band of keratinized tissue and scalloped gingival contour - thin bony arhitecture

thick - broad zone of keratinized tissue
flat gingival contour - thick bony architecture
more resistance to inflammation and trauma

35
Q

principles of prep design in anterior

plane of reduction

A

3 planes of reduction

  • gingival 1/3
  • middle
  • incisal 1/3 –
36
Q

after buccal reduction? how ou know your done? area usually chronically under reduced

A

look at adjacent tooth

lingual aspect towards incisal area

  • contact point
  • like palatal fossa
37
Q

T/F three planes of reduction M-D

A

Yes m- d too - helps get the line angles

38
Q

anterior corwn reduciton basics

A

1.5 mm axial reduction
2mm incisal
3 planes of reduction gingiva;- incisal
- be sure incisal edge of prep is lingual to adjacent unprepped teeth

3 planes of reducitno M-D

be sure to have adequate reduction in concave portion of lingual prep!!!

39
Q

incisal edge of prep should be

A

lingual to the adjacent unprepped tooth

40
Q

fully prepped veneers

reduction related to

A

related to tooth position
- like if lingually positioned and adding to bucccal might not need to prep that much

PRESERVE ENAMEL

41
Q

veneer prep break contact?

A

interproximal contact only maybe need to be broken

42
Q

incisal prep of veneer?

A

1.5 to 2mm reduction with BUTT JOINT MARGIN

43
Q

closing diastema with venner?

A

PREP CANNOT END SUPRA-GINGIVALLY – the wider the diastema the more sub g your prep has to be in order to avoid black triangles

  • this is true for crowns too
44
Q

digital incisal preps

A

need to be wider than milling burs 1-1.2 mm

ROUNDED AND SMOOTH

45
Q

conservative aesthetic options

A
  1. incisal recontouring and re-establishing embrasures
  2. bleaching
  3. no prep porcelain veneers
  4. chairside composite veneers
46
Q

if give patient cosmetic anterior - end tx with?

A

protect them

- fabricate some sort of night guard to protect anterior tooth restorations

47
Q

a lot of times minimum number of teeth to have successful cosmetic case

A

8 teeth

  • multi-discplinary approach

Fixed Prosth 3rd year (17 decks)

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