EXAM QUESITONS

Question 1

what are matrix retainers used for

Answer 1

preventing gingival overhangs of restorations when applied correctly

Question 2

the carotid sinus is innervated by which cranial nerve?

Answer 2

glossopharyngeal

Question 3

what species of plaque bacteria is commonly associated with consuming lactic acid

Answer 3

veillonella parvula

Question 4

what species of oral streptococci belongs to the mutans group?

Answer 4

streptococcus sobrinus

Question 5

positioning your needle tip too far posterior when giving an inferior alveolar nerve block could result in what?

Answer 5

loss of tone in the ipsilateral muscles of facial expression

Question 6

resin composites are what….

Answer 6

they are used in conjunction with both the acid etch technique and dentine bonding agents

Question 7

an abscess from tooth 47 can result in spread to involve which space?

Answer 7

a submandibular space

Question 8

LED light curing units have what?

Answer 8

they have a narrower spectral output than those that use quartz halogen bulbs

Question 9

dental calculus should be removed in succeptible patients as part of the perio treatment because….

Answer 9

it creates a rough surface which ATTRACTS plaque

Question 10

collagen is a large extracellular matrix protein made up of a repeating structure of GLY-X-Y. what are the most likely amino acids to be X and Y?

Answer 10

proline and hydroxyproline

Question 11

lymph arriving at a lymph node flows initially into what structure?

Answer 11

the subcapsular sinus

Question 12

turku sugar study … what is the correct order of substrate from lower caries risk to high caries risk?

Answer 12

xylitol, fructose, sucrose

Question 13

which statement about the limitations of 16s RNA analysis is the most accurate…

Answer 13

16s RNA will not work in the absence of active transcription (ie RNA synthesis)

Question 14

what best describes enamel

Answer 14

it is easily fractured when unsupported by dentine due to its prismatic nature

Question 15

which muscle is responsible for raising the palate

Answer 15

levator veli palatini

Question 16

the following teeth should be checked for furcation involvement in a perio pt..

Answer 16

upper molars, lower molars and upper premolars

Question 17

via which opening does the pterygopalatine fossa communicate with the infratemporal fossa?

Answer 17

pterygomaxillary fissure

Question 18

which group of microorganisms are associated with perio HEALTH and DISEASE ? (classic sokransky study)

Answer 18

porphyromonas gingivalis, treponema denticola, fusobacterium nucleatum

Question 19

explain the most accurate description of the t cell receptor

Answer 19

it is comprised of 4 polypeptides which fold up into globular domains

Question 20

an example of parenteral drug administration is

Answer 20

intravenous

Question 21

what advice should you give nursing mothers if you have used articaine?

Answer 21

do not breastfeed within the next 48 hours ??

Question 22

at a molecular level, what does VIT C do?

Answer 22

hydroxylation of proline to hydroxyproline

Question 23

how would you know that your LA solution had reached the inferior alveolar nerve after giving an inferior alveolar nerve block

Answer 23

ipsilateral numb lower lip

Question 24

which artery is a branch of the subclavian artery

Answer 24

vertebral

Question 25

restoration repair does what....

Answer 25

minimises cavity enlargement

Question 26

a cell carrying the markers CD3 and CD8 is which type of cell?

Answer 26

cytotoxic T cell

Question 27

all of the following reduce environmental mercury pollution with the exception of .......

Answer 27

FAVOURING CREMATION OVER BURIAL

Question 28

A spirochete that has been implicated in some of the most destructive forms of oral diseases, this organism is highly proteolytic......

Answer 28

treponema vincetil

Question 29

ultrasonic scalers should NOT be used...

Answer 29

IF THE PT HAS A PACEMAKER

Question 30

what drains into the inferior meatus?

Answer 30

nasolacrimal duct

Question 31

which is the sensory branch of the anterior division of CNV3?

Answer 31

long buccal

Question 32

carisolv is used for what...

Answer 32

it is a viable alternative to conventional rotary caries removal in some cases

Question 33

the LOA measurement is significant because...

Answer 33

this measurement represents the sum of all the episodes of disease which have taken place at a site since the tooth erupted

Question 34

in order to stage perio disease according to the BSP implementation guidance ......

Answer 34

you should use radiographs and ppds

Question 35

membrane lipids are described as amphipathic, what does this mean?

Answer 35

hydrophobic and hydrophillic

Question 36

conventional glass polyalkenoate cements are.....

Answer 36

composite materials

Question 37

what streptococcus species is most frequently found in association with these localised destructive diseases?

Answer 37

streptococcus anginosus

Question 38

which of the following species of prokaryote is associated with pseudomembranous collitis and produces spores?

Answer 38

clostridiloides difficile (c.difficile)

Question 39

which cranial nerve is responsible for the special sense of taste from the anterior two thirds of the tongue

Answer 39

faical

Question 40

tooth 16 has a dental abscess. which of the following is NOT an expected path of spread of infection from this tooth?

Answer 40

submandibular cellulitis

Question 41

regarding perio probes....

Answer 41

the CP12 probe is useful in measuring grade 3 furcations

Question 42

describe dentine in a statement

Answer 42

is a hard and resillient tissue due to the collagen matrix

Question 43

describe a statement that is INCORRECT about compliment

Answer 43

the three different pathways resulting in compliment activation are classical, alternative, and the lytic pathways

Question 44

which two types of keratin are found in the basal layer of both keratinised and non-keratinised epithelium?

Answer 44

keratin 5 and 14

Question 45

which cavity has the highest c factor and thus the worst predicted clinical durability if restored with resin composite?

Answer 45

an occlusal cavity in a molar tooth

Question 46

the posterior division of the retromandibular vein joins with which other vein to form the external jugular vein?

Answer 46

posterior auricular

Question 47

which cranial nerve below contains somatic motor fibres only?

Answer 47

CNV1

Question 48

what does MRSA stand for?

Answer 48

methicillin resistant staphylococcus aureus

Question 49

the injection of LA into the mucosa of the hard palate is normally what?

Answer 49

it is normally painful due to the tightly bound inflexible masticatory mucosa of the hard palate

Question 50

pre-polymerised inserts, placed with class 2 resin composite restorations at placement do what???

Answer 50

they assist in contact point establishment

Question 51

the epithelial tissue of the oral mucosa is made up of what type of epithelial cells

Answer 51

stratified squamous

Question 52

the advantage of bonded amalgam restorations compared to conventional amalgam is that.....

Answer 52

it is more conservative of tooth structure

Question 53

what statement best describes gram positive bacteria

Answer 53

a prokaryote that contains a single cytoplasmic membrane surrounded by a relatively thick multi-layered cell wall that often contains a secondary polymer in addition to peptidoglycan

Question 54

collagen turnover in the PDL is done by internalisation of collagen fibrils rather than production of collagenases. what does this mean for the PDL?

Answer 54

there is more control of collagen turnover

Question 55

what medication is most likely to induce intrinsic predictable liver failure

Answer 55

paracetamol

Question 56

identify the correct sequence for an infiltration of lidocaine adjacent to an upper left second premolar : retract lip safely, identify injection site.....

Answer 56

insert needle at 45 degrees to bone, advance needle until bone is touched, withdraw by 1mm, aspirate, inject solution at 1ml/min

Question 57

which structure has a sensory innervation?

Answer 57

dura mater

Question 58

concerning the bond strength afforded to tooth substance by a dentine bonding agent it is true to say what??

Answer 58

that the bond these agents form with tooth surface can reform if broken in clinical service

Question 59

which part of the kidney is most significant in terms of drug elimination?

Answer 59

GLOMERULI

Question 60

action potentials what......

Answer 60

depolarisation is the consequence of opening sodium channels

Question 61

what could NOT be undertaken with only a buccal/labial infiltration with lidocaine according to evidence?

Answer 61

cavity prep and restoration of tooth 14

Question 62

ICDAS classification has 7 stages relating to caries progression from least to worst presentation. what list best describes the order of this? LEAST - WORST

Answer 62

distinct visual change in enamel, underlying dark shadow from dentine (with or without enamel breakdown), extensive distinct cavity with visible dentine

Question 63

dental anxiety .... which coping mechanism is widely used in order to give the patient a sense of control whilst the clinician performs a long procedure?

Answer 63

structured time

Question 64

the trigeminal pain pathway has its first synapse in which section?

Answer 64

the nucleus caudalis

Question 65

in relation to the adaptive immune system, which statement describes it as being incorrect?

Answer 65

T lymphocytes are the source of immunoglobulins