anterior - zweig Flashcards
(47 cards)
in general patietns are very
demanding and high expectations
old bleach was
35% hydrogen peroxide - superoxol
aesthetics same as cosmetics?
different
aesthics - fits into the environment
- cosmetics- fitting them into the envionment
cosmetic dentistry definition
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
aesthetics is
the formal study of the prinicples of art and beauty
shows picture of gold fillings is this aesthtic?
no?
picture of gold crowns cosmetic?
yes - changed whole environment
old guy with improvements looks like new crowns -
cosmetic dentistry
- argument is some people age does not have teeth look like that
how do you asses aesthetic risk? whose risk is it?
patient point of view vs ours
- physical characteristics
- high / low lip line
- narow / wide smile - emotional characteristics
- does pt think it will change their life? - level of patient demand
- how fussy is pt.
- is patient holding hand mirror 1/2 inch from their nose - skill of practitioner
high lip line
a 2mm or above display of gingival tissues
medium lip line
gingival margin and the lip line is congruent
low lip line
a 2 mm or more below the cervical line of the upper central incisors
less of an aesthetic risk at the margins
what is absolutley essential when doing a cosmetic case?
communication and informed consent
aesthetic zone?
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
importance of shape
golden proportion?
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
most important aspect of cosmetic - arguably
shape
central incisor width / height ration
if too short?
if too long?
implication of wear?
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 **
male vs female
variable
male – generally flatter with squarer incisal angles
female - usually smaller with rounded incisal angles
embrasure space flow
sould follow a natural and progressive increase in size from the central to the cuspid
can look like one single tooth without
black triangles mainly correlated to
location of contact point
implication on the location of the contact point
** 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
contact point location in central
incisal 1/3
lateral - more apical - apical to the contact point
cuspid - more apical
and incisal embrasure increaseing the more distal you go
axial inclination of teeth
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
apex of giniva on canines and centrals?
on laterals?
on laterals the apex of gingiva should be towards the mesial
on canines and centrals - should be towards the distal
