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FINALS!!! > Resotrative - revision notes > Flashcards

Resotrative - revision notes Flashcards

1
Q

Indications for veneers

A

discolouration
peg laterals
diastemas
enamel defects
crowding
poor aethetics

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2
Q

contraindications for veneers

A

high smile line
poor oh
gingi recession
nail biting
posterior crossbite
heavy occusal contacts
severe discolouration

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3
Q

Dimensions

A

buccally - cervical = 0.3mm, mid = 0.5mm, incisally = 0.7mm
ging - 0.5mm into saulcus

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4
Q

Incisal reduction types

A

feather - no incisal edge and prone to fracture
window - mos protective, poor aethetics and margins
incisal bevel
incisal overlap - chamfer on paltal surface, 2mm reduction, good strength and cementation, lots of tooth tissue removed

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5
Q

Cavity prep steps

A

identify and remove carious enamel
remove enamel to identify the extent of the carious enamel at the acj and smooth margins
remove carious from the perherial surface and slowly work circumfertianlly
remove caries over the pulp
outline form modification
internal design modification

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6
Q

A lining whyq

A

prevent secondary caries
pulpal protection
prevent enamel contamination
risk of microleakeage
effect on bonding

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7
Q

Wooden wedges purposes

A

to rovide temp seperation between teeth
to hold the matrix band in place
to prevent amg going ginginval
t oprovide a good wall for contouring

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8
Q

Advatnages of composite

A

good aesthetics
radiopaque
biocomopatible
low thermal conduction
good abrasion resistance
conservative of tooth strtucre
easily manipulated
no retentive features

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9
Q

Disadvantages of composite

A

technique sensitive
requires good mositure control
contraction on setting
expensive
easily stained

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10
Q

Componenets of composite

A

Filler particles
Bis gma
silane coupling agent
low weight dimethacylates
camphorquinone

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11
Q

Increasing the filler particle

A

increases the visocity - helps with polymerisation contraction stress and mechanical propterties - wear, resistance, fracture, rigity,, strength

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12
Q

Polymerisation stress can cause

A

flexure or crack of the tooth
a gap which can cause microleakage, sens, caries, fracture

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13
Q

Reduce polymerisation contraction

A

small increments placed
higher filler particle
configuration of cavity prep

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14
Q

Polymerisation shrinkage

A

the base of the cavity has a lower bond compared to the composite
the composite lifts away from the base and fluid enters the deintal tubules
the fluid bounces around in the deintinal tubles and can cause pain

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15
Q

Advatnages of amagam

A

radiopaque
easy to place and quick
econmical
resistance to corrosion
good for wear resistnace and toughness
less mositure control required and not tech sens
long lasting and durable

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16
Q

disadvatnages of amalgam

A

merctuy toxicity
colour -asthetics
lichenoid reaction
amalgam tatoo
takes 24hrs to set so potential for fracture straight after placement
requires undercuts so destruction of healthy tooth tissue

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17
Q

amaglgam consits of

A

an alloy with mercury, silver, tin, copper

high copper alloys used as they eliminate the weak gamma 2 phase recuding corrsion

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18
Q

Tools for implant placement

A

diagnostic wax up
study models
clinical photos
essex temp retainer
surgical guide and template
radiographs

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19
Q

Who can’t have implants placed

A

immunocompromised
bisphosphonates
diabetes
bleeding risk
smokers
hx of perio disease
significant loss of alveolar bone
congential cardiac defect

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20
Q

Ging biotype for implants

A

thick and low scalloped

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21
Q

Shape of crown best from implant placement

A

rectangular

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22
Q

Smile line types

A

high >2mm of soft itssue showing
med = <2mm of soft tissue showing
low - convers 25% of tooth surface

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23
Q

Implant types

A

removable - stud, magnet, bar
fixed - cement or screwed

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24
Q

Peri-mucisitiis

A

inflammation of the mucosa surround the implant
BOP
no alveloar or crestal bone loss present

Tx - non surgical mechanical debriement and chx provided

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25
Q

Peri -implantitis

A

inflammation of the mucosa surround the implant and loss of peri implant bone

tx - removal of abutment and non surgical debridement and OHI

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26
Q

Why does peri-implantitis occur

A

mechanical forces/overload
poor oh and inadequte cleaning
smoking
underlying health issue
poor design of implabt

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27
Q

Complications of implant placement

A

biomechanial - peri-mucisitis, peri-implantitis
Mechanical - abutment screw loose, fracture of tooth, soft tissue recession, trauma - bony fractures

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28
Q

GDP monitor the implant site

A

perio probing
bleeding
mobility
suppuration
OH
Recession

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29
Q

attirtions

A

the loss of tooth tissue substance due to physical cotnact either ebtween teeth or between teeth and restorations

Tx - soft or hard splints
can be related to bruxism

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30
Q

Abrasion

A

the loss of tooth subasance through an abnormal mechanicial process not involving the occulsion
toothbrushing, toothpaste, pipe smokers

Tx - change habits, change toothburhs or toothpaste
V shaeped notches on the teeth around the cervical margin area

31
Q

Erosion

A

the loss of tooth substande due to a chemial process rather than a bacertial action
Intrisic - GORD or bullima
Extrisinci, carbonated drinks, gels, citric fruits, acids

32
Q

Abfraction

A

loss of tooth substance that is a biomechanical force distant from the point of loading

brusism

sharp rim at the acj

33
Q

Carbonated drinks casues

A

palatal erosion of uper incisors
incisir wear loss on centroals
posterio manidble cupping and facets
sensitivity
buccal white spots

34
Q

Basic erosisve wear

A

split into sexants

0 = no toothwear
1= incisal loss of surface texture
2 = <50% hard tissue surface loss, defects appearing
3 = >50% hard tissue surface loss

<2=none
3-8=low
9-13=med
>14 = high

35
Q

Info for pt following toothwear build up

A

soft diet for 1st weeks
speech may feel odd
occlusion and bite will feel strange
crowns or bridges may need replaced
may impinge on speech
front teeth only touch and could take 3-6months for posterioer ones to touch

36
Q

Planning for toothwear

A

take a full medical, dental social history
understand the nature of the tooothwear adn casues
cause addressed
liase with pts about aesthetics and approach to tx
clinical photos
poteintal radiographs
diagnositc wax up
interoccusla record
casts mounted on a semi adjustable articulator
stents
temp entures

37
Q

tx for lower ants wear

A

complete before the upper but hard

38
Q

upper ants wear 5 factors

A

the type of wear
the space require
the interoccusal space
the pts wishes and aethetically demand
quantitiy and quality of enamel

39
Q

contrsaindcations to the dahl tech

A

bisphosphonates
active perio
implants placed
tmj issues
exsiting convential bridges
post ortho

40
Q

Dahl tech

A

generalised toothwear mainly ats with decreased in OVD
1. place an anterior bite plane
2. this allows the posterior teeth to overeupt into position
3. the bite plane is removed
4. takes 3-6months for the spcae to pen anteriorily

41
Q

BEWE scores tx

A

<2 = routine maintance and oberservation at 3year intervals
3-8 = routine maintance and dietary advice, recall at 2 year intervals
9-13 = OHI and diet, routine maintance, fluoride delivery, avoid resotrations, 6-12month recall
>13 = OHI and diet, routine maintance, flurodie mesaures consider resotrations 6-12months interval recall

42
Q

Suprahyoid muscles

A

diagastric and geniod - deppress the mandible and elevates the hyoid bone
stylohyoid - pulls hyoid bone posterior and superior for swallowing
mylohyoid - elevates the hyoid bone and floor of mouth

43
Q

Temporalis

A

elevates and retracts mandible
inserts - the cornoid process
orgiin - the temoral fossa

44
Q

Masseter

A

elevates and retracts the mandible
origin - superifcal - the maxiallary process of zygomatic arch, deep - zygomatic arch of temporal bone
inserts - the raumus of the mandible

45
Q

Medial pteryogind

A

elevates and retracts mandible
inserts - ramus of mandible
origin - superifical - maxiallry tuberosity, deep - medial aspect of the lateral pertygoing plate of the sphenoid bone

46
Q

Lateral pterygoid

A

depresses adn prtracts the mandible
inserts - neck of mandible
origin - inferior - lateral pterygoid plate of spehnoid bone, superior - greater wing of sphenoid

47
Q

5 properties of occulsal forces

A

frequency
duration
direction
magnitiude
velocity

48
Q

Posselts enevelope

A

broder movement in the sagittal plane

ICP - centric occulsion, comfortable bite for pt, teeth in contact
T - max opening
E -edge to edge - when teeth slide forward from ICP gliding on palatal surface of ants
Pr - protrusion - condylar moves forwards and downwards on the articular emeneice
R - retruded axis position - no tooth contact, reporoducible jaw position, the condylar is most superior anterior in the glenoid fossa
RCP - the first tooth cotact made when the person moes into the retrued position, about 1mm postieror to the ICP

49
Q

Border position

A

one determined by the anatomy of the TMJ and the surround musculature involvment

50
Q

Bennets angle

A

produced by the saggital place of the mandibluar condyle in lateral movements viewed in the porizontal plane
shows the noon working condyle

51
Q

Fremitius

A

excessive vibration force that is produce by premature ocntact of teeth

52
Q

When not to use the patient in ICP/conformative approach

A

when the pt wishes thier aethetics altered
when you want to increase the vertical facial height
occlusin of teeth severly out position
hx of occlusal fracture or fractures of resotrations

53
Q

Facebow

A

records the relationship of the maxialla relative to the hinge axis of the mandible
the mandible is moutned in ICP or RCP

54
Q

Christensons Phenomenon

A

a gap that appears between the posteiror ends of flat occlusal rims when the madnible is protruded
leads to instability

55
Q

Inlay

A

indirect intracornal resotration boned into place

56
Q

Onlay

A

an extracornal resotration which inlcudes proximal surface

57
Q

Inidactions for inlay/onlay

A

heavily restored teeth
repeated fractrues of direct resotrations
to resotre a root trested tooth
to protect remaining tooth tissue
in patients whos occulsions are diffuclt to ontain

58
Q

advatnages of inlays/onlays

A

good aethetics
strong
durable
cuspal protection
less polymerisation shrinkage, micro leakage, cusp fracture

59
Q

disadvatanges of onlay/inlay

A

expensive and require lab fees
marginal ditching
ceramic can wear the opposing occlusion
debonding due to poor etch or occlusion
ceramic fracture due to lack of bluck

60
Q

Materials used for inlays/onlays

A

Gold
ceramic
cermoer
composite

61
Q

ideal taper for inlay/onlay

A

5-7degrees

62
Q

indications for bridgework

A

speech and function
aesthetics
stability for occlusion
favourable occlusion
no caries/active perio
abutment teeth have no complaications

63
Q

Contraindications for bridgeowrk

A

poor oh
active caries or perio
heavily rotate or tilited teeth as can’t achieve path of instertion
large pulps
poort occlusion/bruxists
un-coperative
overeuption of opposing teeth

64
Q

Retetnion increased by

A

sandblasting the fitting surface of wing
having a large surafce area for bonding
placing rest seats on surface area of bonding
grooves ad notches

65
Q

Material types

A

gold
ceramic
zirconica
metal ceramic

66
Q

Ridge desings

A

wash throught - hygienei santitiary - no soft tisue contact - lower molars
dome shaped - torpedo/bullet - for lower incisors, premolars and upper molars
modified ridge lap - buccal surface normal, lingual surface cut away - for low smile line (good cleansibiity)
ridle lap saddle - contacts soft tissue - high smile line, ants, long span ants - unfavourable as hard to clean

67
Q

Resin bonded retainer wing

A

non precious metal as ridig and can bond easily too
thin section - should be 0.7mm to reduce flexure
however
can shine through so can use zirconia

68
Q

Cementation

A

metal ceramic - GI or RMGI
ceramic - dual cure resin
adhesvice - anaerobic dual cure resin with 10MDP

69
Q

fixed fixed bridge

A

advantages - used in long spans of mssing teeth, robust, good retention and strenght
disadvatanges - requires removal of tooth tissues, difficult to achieve common path of insertion, prep difficult

70
Q

Hybridge bridge

A

one side crown and other side adhsice resin cemented wing

71
Q

Cantilever bridge

A

only a prep crown on one side
advantages - minimmal tooth prep and conservative, straightforward
disadvatanges - has to be rigid to prevent disortion, short span only

72
Q

Adhesvice bridge

A

only single or short span
advatanges - lo la, no prep, conservative of tooth tissue, min surgery time, less cost
disadvaangtaes - can easily debond, metal shine through, no trail period, occulsal interfecnce

not used in long span - heavy occulsal forces, insuffient enamel

73
Q

sprnig cantilever bridge

A

is when the pontic as a metal arm which runs across paaltal mucosa to a reatiner on the palatal side of another tooth

advantages - where adjacent teeth are not prepper, used in space incosrs, posterior teeth as good abutments
disadvantes - traumtises palatal mucosa, can be hard to clean underneath, only for upper incors, difficult to control pontic movement due to springness

74
Q

abutment evaluation

A

crown:root 2:3
must be able to withstand foce
no active caries or perio
supporting tissue healthy and free from disease

FINALS!!! (20 decks)

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