DS4101- Oral Surgery Practice Questions with answers.

DS4101: Oral Surgery Practice |\ |\ |\ |\




Questions with answers |\ |\




Types of needles - CORRECT ANSWERS ✔✔- Half circle most often
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used, cutting, reverse cutting or round working ends
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- Cutting triangular in shape - cut through tissue more easily than
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round bodied
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- Round bodied will blunt very quickly and therefore cause more
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trauma to soft tissue during suturing
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Suture materials - CORRECT ANSWERS ✔✔- Resorbable sutures
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o Catgut, plain and chromic
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o Vicryl is braided suture, same as silk - the braid can unravel,
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bugs and rubbish stuck in there into the wound
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§ Vicryl tends to hang ard for quite a while (2-3wks) - try to
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reduce duration in mouth with polyglycolic acid
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o Polydiozanone (PDS)
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o Poliglecaprone (monocryl)
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- Non resorbable
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o Silk → taken out in a week
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o Nylon of different types (stronger, if tail is too long, pokes soft
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tissue therefore better off using soft sutures)
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o Usu 2/0 or 3/0 size sutures
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,When is a two layer closure required - CORRECT ANSWERS ✔✔if
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deeper tissue involved |\ |\




What sutures can be used to close surgical site? - CORRECT
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ANSWERS ✔✔- Interrupted suture |\ |\ |\




- Continuous Suture - good for large incisions e.g. first molar to
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first molar|\




- Mattress suture
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- Vertical
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- Horizontal
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Haemostasis - CORRECT ANSWERS ✔✔- Control bleeding |\ |\ |\ |\ |\ |\




- Allow good vision
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- Reduce haematoma formation
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- Reduce infection
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- Reduce post op pain control
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- Usu carried out with
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o Pressure gauze and bite down
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o Pack w/ surgicell or other artificial clotting material
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o Suture
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o Diathermy or electrocautery
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Why is flap retraction necessary? - CORRECT ANSWERS ✔✔- to
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gain access to structures to be removed
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, - Provide access - protect important tissues in area, reduce bleed
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and swelling, aid healing, reduce chances of haematoma
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formation and infection |\ |\




What are the general steps required? - CORRECT ANSWERS ✔✔-
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Anaesthesia
- Raising a flap
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- Retraction
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- Bone removal
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- Tooth division
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- Elevation
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- Removal of object or pathology (mostly teeth or tooth
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fragments)
- Debridement
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What are some of the principles of flap design? - CORRECT
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ANSWERS ✔✔- clean sharp instruments |\ |\ |\ |\




- divergent relieving incisions
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- complete inclusion of papilla
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- flaps must be mucoperiosteal
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- broad base
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- away from deep tissues, not over bone defects
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- avoid vital structures
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- access must cover all eventualities during operative process
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- have good flap design w/ adequate access
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- good blood supply with good retraction
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