L11.3 Dental anatomy

Question 1

Oro facial injection

Answer 1

• Correct administration of local anaesthetic to prevent pain during treatment
• Complicated → very vascular
• Putting adrenaline into anaesthetic
  
  • Vasoconstrictor → to prolong anaesthetics and decrease bleeding

Question 2

Injection types

Answer 2

• Infiltration
• Block
• Intra-osseous
• Intra-ligamental

Question 3

Maxillary and Mandibular N block

Answer 3

• Maxilla blocks
  
  • → useful for numbing face → for gum surgery
• Mandibular N block
  
  • → anaesthetise all the teeth on that side + lower lip
  • Blocks above the mandibular canal → blocks INF alvelor N and mandibular N
  • If injected too deeply → and block parotid gland → anaesthetise the facial N as well

Question 4

Forensic dentistry

Answer 4

• Highly individual
• Teeth very durable and especially fire resistant
• Many people have dental record → able to identify
• More accurate identification for younger age individuals

Question 5

Age assessment complexities

Answer 5

• variable
• Beyond 14-15 → few skeletal or dental development markers
• Genetic/environmental factors affecting development

Question 6

Cranio-facial superimposition

Answer 6

• Determine who someone is by the shape of the skull
• But quite variable

Question 7

Bitemarks

Answer 7

• Not a good indication
• Skin changes shape of the bitemark depending on how it was bit

Question 8

Face trauma analysis

Answer 8

• Force delivered to the face
  
  • How many blows, direction of force, what was used to deliver the blow
• May determine child abuse

Question 9

Post-mortem CT imaging

Answer 9

• Body changes after death → makes imaging difficult
• Used for:
  
  • Bleeding, bone ballistics, foreign bodies, fluid collection, gas, gross pathology in viscera