esthetics

Question 1

what aspects of a patients smile might they want to improve

Answer 1

1) color, shape, spacing, crowding

Question 2

golden proportions

Answer 2

1) ratio of the smaller piece to larger piece : larger piece to the original string
2) ratio is 1.618
3) width of canine: lateral
- lateral: central
4) width to height is also golden ratio

Question 3

symmetry

Answer 3

1) central incisors
- discrepancies of 0.2 mm or less in 63% of population
- 14% are totally identical
2) lateral incisors differ significantly in size, shape, rotation, and length

Question 4

why do we leave enamel

Answer 4

1) enamel bonding is the best
2) flexure of the tooth
- delamination
3) implant cycle
- when recurrent decay causes larger and larger restorations => eventually needs implant => eventually this fails
- the moment you touch the tooth with the bur, you have set it on the path for extraction

Question 5

phonetics

Answer 5

1) maxillary incisor should touch the wet white dry line of lower lip

Question 6

round

Answer 6

1) feminine
2) youthful

Question 7

flat

Answer 7

1) masculine
2) mature

Question 8

ideal isnt everything

Answer 8

1) some people do not want to meet your ideal standards

Question 9

esthetic case workflow

Answer 9

1) SOAP
2) records
3) simulated smile design

Question 10

what is the chief concern

Answer 10

1) crowding
2) spacing
3) color

Question 11

facial midline

Answer 11

1) ideally bisects the face
2) passes through nose, philtrum, and chin

Question 12

dental midline

Answer 12

1) parallel to facial midline and as close to it as possible

Question 13

a dental midline shift of 4 mm

Answer 13

isnt noticeable to lay person

Question 14

a dental midline angulation

Answer 14

1) easier to detect

Question 15

commisure

Answer 15

1) the corners are pulled first
2) 67%

Question 16

cuspid smile

Answer 16

1) exposes canine first
2) 31%

Question 17

complex smile

Answer 17

1) 2%
2) simultaneously exposing both top and bottom rows

Question 18

tissue display

Answer 18

1) 32%
- high smile line
2) 42%
- gingival zenith
3) 26%
- lips fall over the gums

Question 19

thin gingival phenotype

Answer 19

1) tissue recedes easily when irritated
2) occurs in presence of PFMs and rough open crown margins
3) probe visible under gumline

Question 20

thick phenotype

Answer 20

1) thick band of attached gingiva
2) tissue is more resilient
3) inflammation over recession

Question 21

are veneers indicated

Answer 21

1) when teeth are resistant to bleaching
2) tooth size discrepancy
3) peg lateral
4) loss of extensive tooth structure
5) morphological change

Question 22

bioclear

Answer 22

1) just composite
2) system of matrices
- clear plastic
- have to buy many
3) works great for filling in embrasures
4) more affordable, no lab fee
5) minimally invasive
6) ceramic tends to chip over time
7) staining on margins

Question 23

how many veneers

Answer 23

1) what about 6
- proceed with caution
- canines can be overbulked
- cause dark buccal corridor
2) usually 4 or 8 is better

Question 24

if there is diastema but nice shaped teeth

Answer 24

1) orthodontics / invisalign
2) free whitening

Question 25

what if they only have front teeth?

Answer 25

1) no veneers! too much flexure and force
2) implants, partial denture first

Question 26

business in the back party in the front

Answer 26

1) need to have strong occlusion in the back and aesthetics in the front

Question 27

short teeth

Answer 27

1) not good for crowns or veneers
2) occlusion can be an issue
- lost interocclusal space
- compensatory supraeruption
3) need to intrude lower anteriors orthodontically and create some space
- then restore

Question 28

record

Answer 28

1) full photographic series
2) high quality impressions
3) horizontal plane