EXAM QUESITONS Flashcards
what are matrix retainers used for
preventing gingival overhangs of restorations when applied correctly
the carotid sinus is innervated by which cranial nerve?
glossopharyngeal
what species of plaque bacteria is commonly associated with consuming lactic acid
veillonella parvula
what species of oral streptococci belongs to the mutans group?
streptococcus sobrinus
positioning your needle tip too far posterior when giving an inferior alveolar nerve block could result in what?
loss of tone in the ipsilateral muscles of facial expression
resin composites are what….
they are used in conjunction with both the acid etch technique and dentine bonding agents
an abscess from tooth 47 can result in spread to involve which space?
a submandibular space
LED light curing units have what?
they have a narrower spectral output than those that use quartz halogen bulbs
dental calculus should be removed in succeptible patients as part of the perio treatment because….
it creates a rough surface which ATTRACTS plaque
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?
proline and hydroxyproline
lymph arriving at a lymph node flows initially into what structure?
the subcapsular sinus
turku sugar study … what is the correct order of substrate from lower caries risk to high caries risk?
xylitol, fructose, sucrose
which statement about the limitations of 16s RNA analysis is the most accurate…
16s RNA will not work in the absence of active transcription (ie RNA synthesis)
what best describes enamel
it is easily fractured when unsupported by dentine due to its prismatic nature
which muscle is responsible for raising the palate
levator veli palatini
the following teeth should be checked for furcation involvement in a perio pt..
upper molars, lower molars and upper premolars
via which opening does the pterygopalatine fossa communicate with the infratemporal fossa?
pterygomaxillary fissure
which group of microorganisms are associated with perio HEALTH and DISEASE ? (classic sokransky study)
porphyromonas gingivalis, treponema denticola, fusobacterium nucleatum
explain the most accurate description of the t cell receptor
it is comprised of 4 polypeptides which fold up into globular domains
an example of parenteral drug administration is
intravenous
what advice should you give nursing mothers if you have used articaine?
do not breastfeed within the next 48 hours ??
at a molecular level, what does VIT C do?
hydroxylation of proline to hydroxyproline
how would you know that your LA solution had reached the inferior alveolar nerve after giving an inferior alveolar nerve block
ipsilateral numb lower lip
which artery is a branch of the subclavian artery
vertebral
restoration repair does what….
minimises cavity enlargement
a cell carrying the markers CD3 and CD8 is which type of cell?
cytotoxic T cell
all of the following reduce environmental mercury pollution with the exception of …….
FAVOURING CREMATION OVER BURIAL
A spirochete that has been implicated in some of the most destructive forms of oral diseases, this organism is highly proteolytic……
treponema vincetil
ultrasonic scalers should NOT be used…
IF THE PT HAS A PACEMAKER
what drains into the inferior meatus?
nasolacrimal duct
which is the sensory branch of the anterior division of CNV3?
long buccal
carisolv is used for what…
it is a viable alternative to conventional rotary caries removal in some cases
the LOA measurement is significant because…
this measurement represents the sum of all the episodes of disease which have taken place at a site since the tooth erupted
in order to stage perio disease according to the BSP implementation guidance ……
you should use radiographs and ppds
membrane lipids are described as amphipathic, what does this mean?
hydrophobic and hydrophillic
conventional glass polyalkenoate cements are…..
composite materials
what streptococcus species is most frequently found in association with these localised destructive diseases?
streptococcus anginosus
which of the following species of prokaryote is associated with pseudomembranous collitis and produces spores?
clostridiloides difficile (c.difficile)
which cranial nerve is responsible for the special sense of taste from the anterior two thirds of the tongue
faical
tooth 16 has a dental abscess. which of the following is NOT an expected path of spread of infection from this tooth?
submandibular cellulitis
regarding perio probes….
the CP12 probe is useful in measuring grade 3 furcations
describe dentine in a statement
is a hard and resillient tissue due to the collagen matrix
describe a statement that is INCORRECT about compliment
the three different pathways resulting in compliment activation are classical, alternative, and the lytic pathways
which two types of keratin are found in the basal layer of both keratinised and non-keratinised epithelium?
keratin 5 and 14
which cavity has the highest c factor and thus the worst predicted clinical durability if restored with resin composite?
an occlusal cavity in a molar tooth
the posterior division of the retromandibular vein joins with which other vein to form the external jugular vein?
posterior auricular
which cranial nerve below contains somatic motor fibres only?
CNV1
what does MRSA stand for?
methicillin resistant staphylococcus aureus
the injection of LA into the mucosa of the hard palate is normally what?
it is normally painful due to the tightly bound inflexible masticatory mucosa of the hard palate
pre-polymerised inserts, placed with class 2 resin composite restorations at placement do what???
they assist in contact point establishment
the epithelial tissue of the oral mucosa is made up of what type of epithelial cells
stratified squamous
the advantage of bonded amalgam restorations compared to conventional amalgam is that…..
it is more conservative of tooth structure
what statement best describes gram positive bacteria
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
collagen turnover in the PDL is done by internalisation of collagen fibrils rather than production of collagenases. what does this mean for the PDL?
there is more control of collagen turnover
what medication is most likely to induce intrinsic predictable liver failure
paracetamol
identify the correct sequence for an infiltration of lidocaine adjacent to an upper left second premolar : retract lip safely, identify injection site…..
insert needle at 45 degrees to bone, advance needle until bone is touched, withdraw by 1mm, aspirate, inject solution at 1ml/min
which structure has a sensory innervation?
dura mater
concerning the bond strength afforded to tooth substance by a dentine bonding agent it is true to say what??
that the bond these agents form with tooth surface can reform if broken in clinical service
which part of the kidney is most significant in terms of drug elimination?
GLOMERULI
action potentials what……
depolarisation is the consequence of opening sodium channels
what could NOT be undertaken with only a buccal/labial infiltration with lidocaine according to evidence?
cavity prep and restoration of tooth 14
ICDAS classification has 7 stages relating to caries progression from least to worst presentation. what list best describes the order of this? LEAST - WORST
distinct visual change in enamel, underlying dark shadow from dentine (with or without enamel breakdown), extensive distinct cavity with visible dentine
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?
structured time
the trigeminal pain pathway has its first synapse in which section?
the nucleus caudalis
in relation to the adaptive immune system, which statement describes it as being incorrect?
T lymphocytes are the source of immunoglobulins
