oral surgery Flashcards
1
Q
how do you control pain during and after dental treatment?
A
local anaesthetic during procedure
systemic analgesic drugs post-op
2
Q
name 3 NSAIDS?
A
aspirin
ibuprofen
diclofenac
3
Q
what type of drugs are aspirin, diclofenac and ibuprofen?
A
NSAID
4
Q
what type of drug is dihydrocodeine?
A
opiod used for analgesia
5
Q
paracetamol, carbamazepine and dihydrocodiene are all used for what in dentistry?
A
analgesia
6
Q
what must you know about a drug to prescribe it?
A
mechanism of action
doses
side effects
interactions
groups of patients to avoid
7
Q
what are the four properties of aspirin?
A
1 analgesic
2 antipyretic (reduces fever)
3 anti inflammatory
4 metabolic
8
Q
what is acetylsalicylic acid commonly known as?
A
aspirin
9
Q
how are prostaglandins produced?
A
trauma and infection leads to phospholipid membrane breakdown producing arachidonic acid
arachidonic acid can be broken down to form prostaglandins
10
Q
what is the function of prostaglandins?
A
they sensitise the tissues to other inflammatory products resulting in pain
11
Q
do prostaglandins cause pain directly?
A
no they sensitise the tissues to other inflammatory products such as leukotrienes
12
Q
true or false
increasing prostaglandin production will moderate the pain
A
false
correct answer - decreasing prostaglandin production will moderate pain
13
Q
describe how the arachidonic acid pathway causes pain and inflammation
A
tissue injury causes injury to phospholipid cell membrane leading to release of arachidonic acid
arachidonic acid then follows the cyclooxygenase pathway to be broken down into prostaglandin which sensitises the tissues to pain and inflammation
14
Q
what is the function of thromboxane?
A
platelet aggregation
15
Q
what are the 4 products of the arachidonic acid pathway?
A
from the cyclooxgenase pathway -
prostacyclin
prostaglandin
thromboxane
from the 5 - lipoxygenase pathway
leukotrienes
16
Q
what is the effect of leukotrienes?
A
broncho constriction
asthma attacks
smooth muscle contraction
17
Q
arachidonic acid can be broken down into 4 products, what are they?
A
prostacyclin
prostaglandin
thromboxane
leukotrienes
18
Q
how does aspirin reduce the production of prostaglandins?
A
inhibiting cyclo-oxygenases COX1 and COX2
19
Q
which cyclooxygenase is aspirin more effective in inhibiting ?
A
COX1
20
Q
how does analgesic action of aspirin result (refer to arachidonic acid pathway)?
A
inhibition of prostaglandin synthesis in inflamed tissues by cyclooxygenase inhibition
21
Q
what effect does interleukin 1 have on the body?
A
temperature raising
22
Q
how does aspirin affect interleukin 1?
A
prevents the temperature raising effects
reduces temperature in fever
23
Q
does aspirin reduce normal temperature?
A
no
24
Q
how does aspirin display antipyretic (anti fever) properties?
A
prevents temperature raising effects of interleukin 1
25
how does aspirin display anti inflammatory properties?
reduces redness and swelling and pain at site of injury
26
what are the adverse effects of aspirin?
GIT problems
hypersensitivity
overdose - tetanus, metabolic acidosis
aspirin burns - mucosal
27
how do you avoid mucosal burns by aspirin?
ensure it is swallowed with water
28
what component in aspirin causes mucosal burns and how?
salicylic acid - if applied locally to oral mucosa will chemically burn
29
how do prostaglandins affect the GIT?
inhibit gastric acid
increase blood flow
production of mucin
30
most patients will experience blood loss from GIT when taking what drug?
aspirin
31
how do hypersensitivity reactions present?
acute bronchospasm/asthma type attacks - be careful prescribing to asthmatics
skin rashes - angiodema, urticaria
32
a patient overdoses on aspirin, what are the adverse effects?
tinnitus/deafness
vasodilation and sweating
metabolic acidosis - life threatening
33
why should a patient with peptic ulceration avoid aspirin?
gastric ulcer could perforate
34
what analgesic should a patient with epigastric pain avoid?
aspirin
35
what analgesic should a patient with bleeding abnormalities avoid?
aspirin
36
why should aspirin be avoided in warfarin patients
enhances anticoagulant effect of warfarin and bleeding tendency
37
how does aspirin affect warfarin
increases free (active) warfarin by displacing warfarin from binding sites (inactive) on plasma proteins
38
which trimester of pregnancy should aspirin be especially avoided?
3rd
39
why should breastfeeding women avoid aspirin?
Reyes syndrome risk
40
why should patients on steroids avoid aspirin?
risk of a peptic ulcer with steroids and aspirin may perforate the ulcer
41
where is aspirin metabolised?
liver
42
where is aspirin excreted?
kidney
43
why should patients with renal/hepatic impairment be cautious taking aspirin?
aspirin is metabolised in liver and excreted in kidneys
if renal impairment - excretion reduced
44
what age group should aspirin be avoided?
under 16
45
why should under 16 avoid aspirin completely?
risk of Reyes syndrome
46
when is aspirin completely contraindicated?
under 16
breast feeding
patients with history of hypersensitivity to NSAIDS
haemophilia
previous or active peptic ulceration
47
give the two key symptoms of Reyes syndrome?
encephalopathy
liver damage
48
why is it important to be cautious prescribing aspirin to patients taking other NSAIDS?
combinations of NSAIDS will increase risk of side effects
49
why must care be taken prescribing aspirin to patients with Glucose 6-Phosphate Dehydrogenase (G6-PD) deficiency?
risk of acute haemolytic anaemia on taking a number of common drugs
50
which patients are susceptible to developing acute haemolytic anaemia when taking a number of common drugs?
patients with G6PD deficiency
glucose 6-phosphate dehydrogenase
51
for mild to moderate odontogenic pain, what dose and regimen of aspirin should be prescribed?
under 16 - do not use - Reyes risk
600mg tablets 4 x daily for 5 days
52
groups to avoid/take caution when prescribing aspirin? 5
asthma
pregnant
breast feeding
anticoagulants
under 16
53
what should be prescribed to patients with previous or active peptic ulcer disease and odontogenic pain?
omeprazole or lansoprazole (proton pump inhibitors)
prevent gastric problems
54
when is ibuprofen commonly used in dentistry?
post op analgesia
55
for mild to moderate odontogenic pain, what dose and regimen of ibuprofen should be prescribed?
1 400mg tablet 4x daily for 5 days
56
what is the maximum daily dose of ibuprofen for an adult?
2.4g
57
take caution when prescribing ibuprofen to...
elderly
pregnancy or breast feeding
asthma
taking other NSAIDS
patients on long term systemic steroids
58
what are the side effects of ibuprofen?
GIT discomfort (bleeding, ulceration)
hypersensitivity reactions
headaches... see BNF
59
ibuprofen has many drug interactions, name some
ABCD - remember these interact with ibuprofen.
ace inhibitors
beta blockers
calcium channel blockers
diuretics
anticoagulants
60
what are the symptoms of ibuprofen overdose?
nausea
vomiting
tinnitus
61
how do you treat ibuprofen overdose?
treat with activated charcoal followed by symptomatic measures if more than 400mg/kg ingested in preceding hour
62
management of paracetamol overdose patient
transfer to hospital IMMEDIATELY
63
what is acetaminophen?
paracetamol
64
true or false
paracetamol does not have anti-inflammatory activity
true
65
what are the properties and benefits of paracetamol?
analgesic
antipyretic
no effects on bleeding time
does not interact with warfarin
less irritant to GI
suitable for children
66
describe the mode of action of paracetamol
tissue injury leads to injury to phospholipid cell membrane and production of arachidonic acid
hydroperoxides are generated from the cyclooxygenase pathway and exert a positive feedback to stimulate COX activity
paracetamol blocks this feedback and therefore inhibits COX
67
when paracetamol blocks the positive feedback of hydroperoxides, what is the effect on the body?
analgesia
antipyretic
68
which patients should you be cautious prescribing paracetamol to?
alcohol dependent
hepatic impairment
renal impairment
69
what are the side effects of paracetamol?
rare
rashes
blood disorders
hypotension
liver damage following overdose
70
what is the effect of paracetamol on anticoagulants?
enhances the anticoagulant effects of coumarins - warfarin
71
for mild to moderate odontogenic pain, what dose and regimen of paracetamol should be prescribed?
adults
2x 500mg tablets 4x daily
maximum dose 4g daily
children see BNF as depends on weight/age
72
what is the weakest opioid?
codeine
73
where in the body do opioid analgesics act?
act in the spinal cord - dorsal horn pathways
74
what quantity of paracetamol can cause overdose?
150 mg/kg within 24 hrs
75
what medication is used to treat neuropathic and functional pain such as trigeminal neuralgia, post-hepatic neuralgia or TMJ pain?
carbamazepine
76
what is carbamazepine used for?
trigeminal neuralgia control
77
what type of medication is carbamazepine?
anti-convulsant
78
what are the clinical features of trigeminal neuralgia?
severe spasms of pain/electric shock lasts seconds
usually unilateral
older age
females more affected
periods of remission
recurrences often greater severity
79
where is the main site of action for paracetamol ?
thalamus
80
what is the function of prostaglandins in the kidneys?
PGE2 and PGI2 are powerful vasodilators synthesised in the renal medulla and glomeruli and are imnvolved in control of renal blood flow and excretion of salt and water
81
where is PGE2 synthesised?
renal medulla
82
where is PGI2 synthesised?
glomeruli
83
how do NSAIDS have nephrotoxic effects?
inhibition of renal prostaglandin may result in sodium retention, reduced renal blood flow and renal failure
84
what analgesics can cause nephritis and hyperkalaemia?
NSAIDS
85
how do opioid analgesics prevent pain?
they bind to specific receptors which are associated with neuronal pathways transmitting pain to CNS
86
what are 3 major problems with opioids ?
dependence, tolerance and smooth muscle effects
87
opioids can cause psychological and physical dependence, what does this mean?
withdrawal of the drug will lead to psychological cravings and patient will be physically ill
88
what does opioid tolerance mean ?
to achieve the same therapeutic effects the dose of the drug needs to be progressively increased
89
what are the resultant effects of opioid action on smooth muscle?
constipation
urinary and bile retention
90
what are the effects of opioids of the CNS?
depresses CNS
pain centre - alters perception of pain
91
what are the side effects of opioids?
nausea
vomitting
dry mouth
sweating
bradycardia/tachycardia
92
what enhances the effects of opioids?
alcohol
93
which groups of patients should you be cautious prescribing opioids to?
hypotension
asthma
pregnant or breast feeding
hepatic/renal impairment
dependence
94
what conditions contraindicate opioid prescription?
acute respiratory depression
acute alcoholism
raised inter cranial pressure/head injury
95
what is the common side effect of codeine?
constipation
96
what are some benefits of codeine?
low dependence
effective orally
effective cough suppressant
97
which codeine combination is found on the dental list?
dihydrocodeine
98
what are some side effects of dihydrocodeine?
nausea
vomitting
constipation
drowsiness
respiratory depression and hypotension
99
what are serious drug interactions associated with dihydrocodeine?
antidepressants
dopaminergic
100
who should you never prescribe an opioid to?
patients with raised inter cranial pressure/suspected head injury
101
what are the groups to be cautious prescribing dihyrocodeine to?
hypotension
asthma
pregnancy/breastfeeding
renal/hepatic disease
elderly/children
102
what is the antidote for opioid overdose?
naloxone
103
when is naloxone indicated?
coma or bradypoenea
104
what are the signs and symptoms of opioid overdose?
coma
respiratory depression
pinpoint pupils
105
give examples of unrestorable teeth?
gross caries
tooth/root fracture
severe tooth surface loss
pulpal necrosis
apical infection
106
what are some indications for tooth extraction?
unrestorable teeth
symptomatic PE teeth
traumatic position
ortho indications
interference with denture construction
107
where should you stand for lower molar extraction if right handed?
left lower molars - infront
right lower molars - behind
108
when is the only time right handed stands behind a patient to extract tooth?
lower right molar/premolar
109
what are the three modes of action for tooth elevation?
wheel and axle (rotation)
lever
wedge
110
what are the four applications points for an elevator?
buccal - into furcation
medial
distal
superior - upper teeth
inferior - lower teeth
111
what are the post operative complications of MOS a patient should be warned of?
pain
swelling
bruising
bleeding
infection
Nerva damage risk - permanent, temporary or altered
jaw stiffness
dry socket
112
why should soft tissues be retracted?
improves access to operative field
protection
113
what are the general principles of oral surgery?
maximal access, minimal trauma
wide based incision
minimise trauma to dental papillae
no crushing
keep tissues moist
ensure flap margins and sutures will lie on sound bone
make sure wounds are not closed under tension
aseptic technique
114
why should you use a wide based incision?
circulation
115
true or false
bigger flaps heal just as quickly as small ones
true
116
what are the three stages of debridement?
physical - bone file/hand piece to remove sharp edges
irrigation - sterile saline/water into socket and under flap
suction - aspirate under flap to remove debris and check socket for retained apices etc
117
what are the aims of suturing?
compress BV
reposition tissue and cover bone
prevent wound breakdown
haemostasis
encourage healing by primary intention
118
what are the two categories of sutures?
resorbable
non-resorbable
119
give an example of a monofilament resorbable suture
monocryl
120
give an example of a multifilament resorbable suture
vicryl rapide
121
give an example of a non-resorbable multifilament and monofilament suture
multi - mersilk
mono - prolene
122
how is haemostasis achieved during operation?
LA with vasoconstrictor
artery forceps
diathermy
bone wax
123
how is haemostasis achieved post operation?
pressure
LA with vasoconstrictor
diathemy
sutures
packing agent
124
what are the stages of surgery?
anaesthesia
access
bone removal and tooth division as necessary
debridement
suture
achieve haemostasis
post op instructions and medication
125
what will healing by primary intention minimise?
scarring
126
what instrument can be used to retract soft tissues?
Howarth's periosteal elevator
127
why are electrical handpicks used in OS and not air driven?
air driven may lead to surgical emphysema
128
what should you use to remove bone in OS?
electrical straight hand piece with saline cooled round or fissure tungsten carbide bur
129
what are the uses of elevators?
provide application point for forceps
loosen teeth
extract teeth
remove root stumps, apices and retained roots
130
what instruments can you use for debridement?
bone file
hand piece
Mitchell's trimmer
Victoria curette
131
when would you use a non-resorbable suture?
if extended retention periods are required
closure of OAF pr exposure of canine
132
when would you use an absorbable suture?
if removal of suture not desirable and tissue edges just need held together temporarily
133
compare bacterial colonisation on mono and multi filament sutures
monofilament are single strand and resistant to bacterial colonisation
multifilament allow oral fluids and bacteria to move along length and in-between several filaments and can result in infection
134
what are the 4 nerves that can be damaged in extraction of lower third molars?
inferior alveolar nerve
lingual nerve
mylohyoid and buccal - less common
135
what analgesia will you prescribe after third molar extraction?
ibuprofen
paracetamol
cocodamol
136
what are the complications of lower third molar extractions?
pain
swelling
bruising
bleeding
infection
trismus
paraesthesia/anaesthesia of lip and tongue
137
what is the aim of peri-radicular surgery?
establish root seal at apex of tooth/point of perforation
remove existing infection
138
what is the review schedule for periradicular surgery?
review at one week
post of radiographs 1-6 weeks
further review 3-6 months
139
what are the top reasons periraduicular surgery fails?
inadequate seal e.g. too little apex removed
inadequate support e.g. perio pockets
split roots
soft tissue defect over apex post-op
140
how much of the apex should be removed in periradicular surgery?
3mm
141
list 10 peri-operative extraction complications
difficult access
abnormal resistance
fracture of tooth/root
alveolar bone fracture
jaw fracture
maxillary sinus involvement
fracture of tuberosity
soft tissue damage
nerve damage
haemorrhage
adjacent teeth damage
wrong tooth
142
what might cause difficult access?
trismus
reduced aperture of mouth - congenital/syndrome
crowder/malpositioned teeth
143
what causes abnormal resistance during extraction?
thick cortical bone
shape/form of roots - hooked/divergent
number of roots
ankylosis
hypercementosis
144
what are risk factors of tooth/root fracture during extraction?
caries
alignment
size
root morphology
145
which teeth usually are involved in fracture of alveolar bone?
usually buccal plate and canines or molars
146
how do you manage a tuberosity fracture?
reduce wound and stabilise
remove or treat pulp, ensure occlusion free
antibiotics and antibiotics
remove tooth 8 weeks later
147
what are the causes of tuberosity fracture?
single standing molar
extracting wrong order
inadequate alveolar support
148
how do you diagnose an alveolar fracture?
noise
movement noted visibly or with supporting fingers
more than one tooth moving
tear on plate
149
how do you confirm root proximity to sinus?
radiograph
OPT periodical or occlusal
150
how do you manage maxillary sinus involvement?
inform patient
if small or sinus intact encourage clot, suture and prescribe antibiotic and post op instructions
if large close with buccal advancement flap
antibiotics and nose blowing instructions
151
what are the risk factors for involvement of the maxillary sinus?
extraction of upper molars and pre molars
close relationship of roots on radiograph
last standing molars
large bulbous roots
older pt
previous OAC
recurrent sinusitis
152
what are the complications of involvement of maxillary sinus?
OAC/OAF
loss of root into antrum
fractured tuberosity
153
how do you diagnose a maxillary sinus involvement?
size of tooth
radiographic position
bone at trifurcation of roots
bubbling of blood
nose holding test
direct vision
good light and suction
blunt probe
154
which jaw is more commonly fractured?
mandible
155
how do you manage a jaw fracture during extraction?
inform patient
post op radiograph
refer
ensure analgesia
stabilise
antibiotic if delay
156
what do you do when you lose a tooth during extraction?
stop
locate
suction and radiograph
157
how do you avoid soft tissue damage?
pay attention
correct placement of correct instrument
application point
controlled pressure
sufficient not excessive force
158
define neurapraxia
contusion of nerve/continuity of epieneural sheath - axons maintained
159
define axonotmesis
continuity of axons disrupted - epieneural sheath maintained
160
define neurotmesis
complete loss of nerve continuity/nerve transected
161
what are the different ways a nerve can be injured?
crushing
transection
damage from LA or surgery
cutting/shredding injuries
162
what will paraesthesia feel like
tingling
163
what will anaesthesia feel like
numbness
164
what will dysaesthesia feel like
unpleasant sensation/pain
165
define hypoaesthesia
reduced sensation
166
define hyperaesthesia
increased/heightened sensation
167
you have damaged a vessel during surgery nd blood is spurting/haemorrhaging, what vessel have you cut?
artery
168
during surgery you cut a vessel and there is a lot of bleeding flowing steadily what vessel have you cut?
vein
169
a spurting pulsating bleed is associated with which vessel?
arteriole
170
what causes haemorrhage during extraction?
local factors - mucoperiosteal tears or fractures of alveolar bone
undiagnosed clotting abnormality - willebrands
liver disease
medication - warfarin/antiplatelets
171
how to you manage soft tissue haemorrhage?
pressure - bite on damp gauze
sutures
LA with adrenaline
diathermy
ligatures on larger vessels
172
how do you manage haemorrhage in bone?
pressure via swab
LA on swab or injected into socket
haemostat agents
bone wax
pack
173
how do you manage TMJ dislocation?
relocate immediately - down and fwd
if unable to relocate - LA into masseter intraorally
refer if unable still
174
how do you manage damage to adjacent teeth during extraction?
temporary dressing/restoration
arrange definitive restoration
warn pt of risk
175
what do you do when an instrument breaks during OS?
radiograph and retrieve
if unable refer
176
how do you avoid removing wrong tooth?
concentrate
check clinical situation against notes/radiographs
safety checks
count teeth
verify with someone else
177
5 post extraction complications
pain/swelling
trismus
haemorrhage
dry socket
prolonged nerve damage
178
what is ecchymosis
bruising
179
what is most common complication of extraction
pain - warn and advise analgesia
180
how to limit post extraction pain
gentle handling of tissues
don't leave exposed bone
complete tooth extraction
181
what may increase bruising and swelling
poor surgical technique
rough handling of tissues
182
what is truisms
inability to open mouth fully/jaw stiffness
183
what causes truisms - 4
surgery - oedema
giving LA - medial pterygoid
damage to TMJ
haematoma - MP or masseter
184
treatment for trismus
monitor
gentle mouth opening exercises - trismus screw
185
procedures with high risk bleeding complications
complex extraction
extraction of more than 3 teeth
flap raising procedures
biopsy
gingival re-contouring
everything else is low risk or unlikely risk
186
what causes immediate post op bleeding within 48hrs
LA wears off and vasoconstrictor
sutures loose
pt traumatises area with tongue or food
reactionary bleeding
187
what causes secondary bleeding and how long after extraction
usually infection - 3-7 days
188
treatment of soft tissue post op bleeding
pressure - damp gauze
suture
LA with adrenaline
diathermy
189
treatment of bone post op haemorrhage
pressure
LA on swab with vasoconstrictor
bone wax
pack and suture
190
3 haemostatic agents
adrenaline in LA
oxidised regenerated cellulose
thrombin liquid and powder
191
where to take caution using oxidised regenerated cellulose and why
lower 8s - acidic can damage IAN
192
3 systemic haemostatic aids
vitamin K
tranexamic acid
missing clotting factors
193
which suture is suitable when managing bleeding
interrupted or horizontal mattress
194
where to refer if can't stop bleeding
weekdays - maxillofacial or dental hospital
weekends and evening - maxillofacial on call or A and E
195
how can you prevent intra operative and post operative extraction haemorrhage - 4
thorough medical history
atraumatic extraction technique
check good haemostasis at end if surgery
good post op instruction
196
post extraction instructions - 5
don't rinse for several hours - avoid vigorous
avoid trauma - hard foods or touching with tongue
avoid hot food
avoid excessive exercise and alcohol
bleeding control info
197
why do you avoid exercise and alcohol after OS
increases blood pressure and decreases clot quality
198
after how many months is there little chance that nerve damage will improve
18
199
what are the three types of sensory change after nerve damage
anaesthesia
paraesthesia
dysaesthesia
200
what is hypoaesthesia
reduced sensation
201
what is hyperaesthesia
increased sensation
202
what percentage of all extraction is affected by dry socket
2-3%
203
what percentage of lower 8 is affected by dry socket
20-35%
204
signs and symptoms of dry socket
normal clot gone - empty socket - bare bone
intense pain - kept up at night, throbs, dull ache
sensitive
bad smell
bad taste
3-4 days after extraction
205
predisposing factors of dry socket - 5
molars
female
mandible
smoker - low blood supply
oral contraception
206
management of dry socket
reassure
systemic analgesia
LA
irrigate with warm saline
curettage and debridement
antiseptic pack alvogyl
207
2 things that delay healing
infection
sequestrum
208
what is sequestrum
bits of dead bone
tooth or amalgam fragments
209
how to diagnose OAC
radiographic position of roots in relation to antrum
bone at trifurcation on roots
bubbling of blood
direct vision
210
why cautious for nose holding test or blunt probe test when assessing for OAC
can create OAF
211
management of small OAC
encourage clot
suture
post op instruction
212
management if large OAC
buccal advancement flap
bone graft
antibiotics
nose blowing instruction
213
what is osteomyelitis
inflammation of bone marrow
implies bone infection
214
describe spread of osteomyelitis
bacteria in cancellous bone
inflammation and oedema
compromises blood supply and leads to tissue necrosis
will spread until arrested by antibiotics or surgery
215
why is osteomyelitis less common in maxilla
rich blood supply - several arteries
216
why is osteomyelitis more common in mandible
IAA is primary blood supply
dense cortical bone limits penetration of periosteal blood vessels
poorer blood supply means more likely to become ischaemic and infected
217
risk factors of osteomyelitis
odontogenic infection
compromised host defence e.g. diabetes
218
radiographic radiolucency with moth eaten appearance - diagnosis ?
osteomyelitis
219
what is an involucrum
increased radio density surrounding radiolucency
220
bacteria associated with mandibular osteomyelitis
anaerobic bacteria
221
effect of radiotherapy on bone
bone becomes non-vital
turnover is slow
self repair ineffective
reduced blood supply
222
why is mandible more affected by ORN
poor blood supply
223
prevention of ORN
chlorhexadine mouthwash
antibiotics
224
what are bisphosphonates used to treat
osteoporosis
pagets disease
malignant bone metastases
225
example of bisphosphonate
end in onate
alendronate
226
drugs involved in MRONJ
antiresorptive
antiangiogenic
227
when can MRONJ occur
post extraction
following denture trauma
spontaneous
228
increased dose and increased duration of bisphosphonates increases the risk of what
MRONJ
229
using anti resorptive drugs concurrently with which 2 drugs increases MRONJ risk
steroids
or
antiangiogenic drugs
230
treatment of MRONJ
manage symptoms - remove sharp bone
chlorhexadine mouthwash
231
what is actinomyetosis
rare bacterial infection caused by actinomycetes israelii (there's more)
232
signs of actinomycosis
skin sinuses and swelling
lumpy pus
233
actinomycosis treatment
high dose antibiotics
234
antibiotic prophylaxis dose and time
amoxicillin 3g 60mins before procedure
235
basic principles of surgery
risk assess
aseptic technique
radiological assessment
minimal trauma to hard and soft tissues
236
what kind of flap is used in OS in regards to what tissues are lifted
mucoperiosteal flap - lift mucosa and periosteum
237
3 principles of lifting flap
maximal access minimal trauma
preserve adjacent soft tissues and papillae
wide base incision for circulation and perfusion
238
what is a mucocele
blocked minor salivary gland - saliva build up
239
what hand piece is used for bone removal and why
electric straight handpiece with saline or sterile water cooled bur
air driven - surgical emphysema
240
why are air driven handpicks not used in surgery
surgical emphysema risk - air between soft tissues and bone and can cause sepsis
