other Flashcards

1
Q

what are the 9 GDC principles

A

put patients interests first
communicate effectively
Maintain and protect patient information
have a clear and effective complaints procedure
work with colleagues in way that benefits patients
maintain, develop and work within knowledge and skills
raise concerns if patient at risk
behaviour maintains confidence in pt confidence in you and profession

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2
Q

why is calcium hydroxide used for pulp caps

A

high pH - decreases microbial load
forms calcific barrier

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3
Q

what wire for flexible splint

A

0.4mm SS wire, bonded with composite

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4
Q

discuss the viability of PDL cells after avulsion

A

replanted within 15 mins - viable
tooth stored then replanted within 60 mins - viable but compromised
EADT>60mins - non viable

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5
Q

discuss what should be done at avulsion injury site

A

keep patient calm
replant tooth - if dirty rinse with saline or milk then replant, only hold tooth by crown
get patient to bite on gauze or tissue to hold in place

if replantation not possible store in milk or saliva asap

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6
Q

treatment of a closed apex avulsion

A

clean socket or replantation area with saline
administer LA without vasoconstrictor
replant tooth or reposition if required
stabilise tooth for 2 weeks with flexible splint
initiate RCT within 2 weeks

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7
Q

treatment of open apex avulsion

A

clean socket or replantation area with saline
administer LA without vasoconstrictor
replant tooth or reposition if required
stabilise tooth for 2 weeks with flexible splint
pulp revascularisation and continued root development is the goal - monitor tooth for signs of external inflammatory RR

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8
Q

pt instructions after avulsion (4)

A

avoid contact sports
soft diet for 2 weeks
brush teeth with soft brush after every meal
use CHX 0.2% 2x daily for 2 weeks

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9
Q

what degree of taper should cores have

A

6 degrees

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10
Q

methods of post removal (4)

A

masseran kit
eggler device
sliding hammer
mosquito forceps (screw)
ultrasonic

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11
Q

4 risks of post removal

A

root fracture
cant remove post
tooth rendered unrestorable
post breaks

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12
Q

name 1 ester and 3 amide LAs

A

ester - benzocaine
amide - articaine, lidocaine, prilocaine

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13
Q

what is included within a LA preparation (4)

A

base hydrochloride e.g lidocaine HCl
reducing agent
preservative
(vasoconstrictor)

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14
Q

2 components in alginate

A

calcium phosphate
sodium alginate

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15
Q

why does alginate have poor dimensional stability

A

syneresis and imbibition of water

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16
Q

amalgam cavity preparations for proximal restorations

A

self retentive box
proximo-occlusal prep

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17
Q

discuss the phases of amalgam

A

gamma - silver and tin - good strength and corrosion resistance
gamma 1 - mercury and silver - good corrosion resistance, holds material together
gamma 2 - mercury and tin - poor strength and corrosion resistance

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18
Q

why was zinc added to amalgams and why is it no longer used

A

was added to act as scavenger and preferentially react with oxygen
removed as reacted with water to form hydrogen bubbles

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19
Q

why are modern amalgams copper enriched

A

higher early strength, less creep, greater corrosion resistance, better durability of margins

single composition contains at least 12 % copper

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19
Q

name an example of a low weight dimethacrylate

A

TEGDMA

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20
Q

clock positions in chariside assistance

A

7-11 - operating
11-2 - static
2-4 - nurse
4-7 - transfer

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21
Q

name 5 benefits of aspiration and retraction

A

patient safety
patient comfort
maximum illumination
good visualisation

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22
Q

name 5 things that can be used for retraction

A

cheek retractor
aspirator
3 in 1 syringe
mirror
tongue depressor
cotton wool rolls

23
Q

what is the ideal operating seating position

A

balanced position

24
name 4 components of the balanced seating position
- 90 degree angle at hip and knee - thighs parallel to floor -relaxed shoulders - feet flat on floor for stability
25
what height should the nurse be at
2-4 inches higher than dentist
26
modifying factors in attrition (4)
stress in combo with abrasion or erosion malocclusion lack of posterior support
27
contraindications to DAhl technique (4)
implants active perio bisphosphonates TMJD
28
discuss the dahl concept (3)
conservative concept allowing localised increase in space without reorganising entire occlusion can use bite plane or more commonly composite restorations on palatal of anteriors to create an occlusion on a raised cingulum results in disocclusion of the posteriors and an increase in OVD of around 2-3mm. Over 3-6 months posteriors will overupt and space will be gained
29
treatment of chronic hyperplastic candidiasis
risk factor modification - smoking, nutritional deficiencies biopsy antifungals - fluconazole review appts excision indicated if dysplasia found
30
4 aetiological factors of RAU
genetics - 40% hormonal - luteal phase of menstruation GI disease - associated haematinic deficiency allergy - raised IgE HIV - associated
31
RAU investigations
FBC + haematinics TTG allergy
32
lichen planus investigations
biopsy FBC + haematinics autoantibody screen if indicated
33
what wire for retention on permanent and deciduous URA
permanent 0.7mm HSSW primary - 0.6mm HSSW
34
treatment of angular chelitis
miconazole 2% cream, 2x daily
35
treatment of denture stomatitis
fluconazole - 50mg 7 days miconazole 20mg/g gel - 4 times to fitting surface a day
36
5 intra oral manifestations of HIV
kaposis sarcoma hairy leukoplakia RAU erythmatous and pseudomembranous candida ANUG NH lymphoma
37
aciclovir mechanism of action (3)
activated by thymidine kinase which is only present in infected cells competitively inhibits DNA polymerase by acting as a defective guanine aciclovir triphsophate has greater affinity for viral DNA polymerase than host DNA polymerase
38
3 pharmacological managements of TMD
NSAIDs TCAs muscle relaxants e.g cyclobenzaprine
39
name 4 secondary care treatments of lichen planus
clobetasol tacrolimus hydroxychloroquine azathioprine
40
cluster headache vs paroxysmal hemicrania
cluster - bouts then remission periods - 15 mins to 3 hours hemicrania - multiple attacks a day up to 30 mins
41
3 side effects of carbamazepine
ataxia dizzyness drowsiness
42
4 signs of midface fracture
nose bleed without blow to nose midface mobility infraorbital numbness without blow to nerve subconjunctival bleed
43
4 signs of zygomatico-orbital fractures
periorbital ecchymosis assymetry step deformity unilateral nose bleed
44
what makes consent valid
specific to proposed treatment obtained recently enough remains current
45
what makes consent legal
pt has capacity pt is informed voluntary decision
46
6 elements of consent
not coerced not manipulated voluntary valid with capacity informed
47
what size wire for lab made fixed appliances e.g quadhelix
0.9mm HSSW
48
what does a facebow do
records relationship of maxilla to terminal hinge axis of mandible and allows the maxillary cast to be mounted on articulator in an equivalent relationship
49
briefly describe the process of using a facebow (3 steps)
1 - mark anterior reference point (infra orbital foreamen) 2 - position bite fork with paste or wax, notch in midline 3 - assemble ear bows and face jig, pointer aligned with anterior reference point, parallel with interpupillary line
50
3 circumstances for using a facebow
toothwear bridges michigan splint
51
name 3 methods of hand file motions and describe each
watch winding - 30 -60 back and forth light apical pressure, used for small K files <=15 balanced force - 60 CW then 60-120 CCW reaming - used with protaper series - 90 CW then another 90 CW whilst simultaneously withdrawing
52
discuss the protaper series
either hand files or protaper gold (rotary) both compromise 8 files arranged in 2 series - shaper files - 3 files for apical and middle third prep - finishing files, 5 files used in simultaneous manner, recommended at least to F3
53
degrees of motion for reciproc
150 degrees counterclockwise then 30 degrees clockwise
54
how to decide what size reciproc
narrow canals - R25 ISO 20 passively to length - R40 ISO 30 passively to length - R50
55
name 3 complications that may occur when using hand files for endo prep
blockage - accumulation of debris ledge - internal transportation zipping - overenlargement of outerside, underenlargement of inner side
56
what may cause instrument separation (2)
torsional stress - tip locks and torque exceeds critical level flexural stress due to repeat cyclic metal fatigue