Treatment Planning for Fixed Pros Flashcards
what are fixed pros restorations also called
indirect restorations
examples o fixed pros
veneers
onlay
inlays
crowns
what should you examine with the lips when looking at fixed pros
vermillion borders
commissures
smile line
what soft tissues will indicate if a patient has bruxism
buccal mucosa
lateral border of the tongue
what is the white line that can be present on the buccal mucosa as a result of bruxism called
linea alba
what needs treated and managed before starting fixed pros
periodontal disease
what is canine guidance
patient moves the jaw laterally as far as it goes and only canines are touching - all other
posterior teeth are not in occlusion
what is group function
patient moves jaw laterally as far as it goes and all posterior teeth are still in contact
what are examples of special investigations
sensibility testing (EPT or ethyl chloride)
radiographs
study models
facebow registration
diet diary
plaque and gingivitis indices
FMPC
photographs
biopsies
what are the five stages of treatment
immediate
initial - disease control
re-evaluation
reconstructive
maintenance
what factors affect the patients options for fixed pros
costs
time
medical issues
dentist
what are three examples of a tooth that is unrestorable
caries is down to alveolar crest - no margins
horizontal fractures along pulp floor
vertical root fractures
what can be used to get an existing post and core out
eggler device
what are reasons people want veneers
improve aesthetics
change teeth shape
correct peg laterals
reduce or close proximal spaces
what are contra-indications of veneers
poor OH
high caries
gingival recession
root exposure
when would you use onlays/ inlays
tooth wear caries
increase OVD
fractured cusps
replace failed direct restorations
why are crowns provided
protect weakened tooth structure
improve or restore aesthetics
retainer for bridge work
reduce tooth function
contra-indications of crowns
active caries and perio disease
more conservative options available
lack of tooth tissue for preparation
unable to provide post and core
what are the six principles of crown preparation
preserve tooth structure
retention and resistance
structural durability
marginal integrity
preservation of periodontium
aesthetic considerations
what does underpreparation of a tooth result in
poor aesthetics
over built crown with periodontal and occlusal consequences
restorations with insufficient thickness
what is retention
prevention of removal of the restoration along path of insertion
what is resistance
prevents dislodgment of the restorations by forces directed in apical or oblique direction
what should the taper be for a crown
inclination of opposing walls at 6-10 degrees
what factors affect retention and resistance in crown prep
taper
length of walls
path of insertion
extra means of retention (grooves and slots)
what improves retention
limiting the number of paths of insertion
what increases the number of paths of insertion
over-tapering the preparation
what is structural durability achieved through
occlusal reduction
functional cusp bevel
axial reduction
what does axial reduction involve
preparing the tooth in more than one plane - not just taking a straight line down the incisal edge
what are the five types of marginal integrity preparations
knife edge
bevel
chamfer
shoulder
bevelled shoulder
what does a chamfer bur look like
has a rounded tip
what does a shoulder bur look like
flat bur
what should margins of the crown restoration be
smooth and fully exposed to a cleaning action
placed where the dentist can finish them
placed supra-gingivally
what is the biological width
distance between the very depth of sulcular epithelium and alveolar bone
what is the dento-gingival complex
gingival margin to the very top of alveolar bone
what helps you decide what material to use for crowns
is it for aesthetics (anterior) or functional
what can occur if a patient is a bruxist and has had all anterior ceramic crowns positioned
they can wear down the opposing teeth
what are bridge designs
cantilever (only held on at one side)
fixed - fixed (both sides)
what consent should you get from a patient for fixed pros work
written and verbal
