trauma

Question 1

what is the ellis classification of dentoalveolar fracture

Answer 1

based on the extent of tooth structure involved

class I: only enamel
class II: enamel and dentin
class III: enamel, dentin, pulp

Question 2

what type of splint to use for avulsion and intrusion

Answer 2

even though its not exactly an alveolar fracture, so by guidelines it says flexible splint but dr teo says that they do rigid splint because we want bony stabilization whenever there is a bony injury

Question 3

what bone fracture to suspect if mouth opening is limited

Answer 3

zygomatic bone fracture because when its fractured, the condyles will be blocked and cant open mouth

Question 4

what are the 4 points of fixation of the zygoma

Answer 4

• zygomaticomaxillary articulation and inferior orbital rim
• zygomaticosphenoid articulation in the lateral orbital wall
• zygomaticofrontal articulation and the lateral orbital rim
• zygomatic arch

Question 5

two types of closed reduction for ZMC fractures

Answer 5

1) gillies approach
- incision made within temporal hairline to access zygomatic arch, fracture reduced using an elevtor placed between temporalis muscle and deep temporal fascia, elevating displaced bone back to proper position

2) Keen’s approach
- incision through maxillary vestibule
- minimally invasive method, hidden incision site

Question 6

what kind of fracture do we suspect when we see ecchymoses on chin

Answer 6

parasymphyseal fracture

• also if patient says theres a gap between lower anterior teeth, wasnt present intiially but now is there

Question 7

what is guardsman fracture

Answer 7

anterior mandible fracture combined with bilateral condylar fracture

Question 8

how to manage a mandibular fracture in an edentulous patient

Answer 8

closed reduction by gunning splint for 4-6 weeks

they are bite blocks secured to bone using wire or screws to immobilise jaw