INCISOR TRAUMA

Question 1

TDI =

Answer 1

mpact injury to teeth and hard/soft tissues oral cavity/mouth –> sudden, emergency

Question 2

Epidemiology

Answer 2

5th prevalent dis world, 1bil affected, 20% children -12yrs
o Retrospective surveys
o Clinical exam only, no RG
o ≠ ‘minor damage’ –> lots trauma missed, underestimation
o Influence QoL child+parent = psychological bullying/-ve judgement, social functioning

Question 3

Aetiology

Answer 3

Home/School, falls toddlers, sports, motor accidents, fights

Question 4

Risk Fac

Answer 4

class II, division 1 malocclusion (↑overjet), males, 1-3yrs, 10-14yrs

Question 5

Classification used

Answer 5

Andreasen’s

Question 6

Hard Tissue - first 4 types

Answer 6

1. Enamel Infraction = confined e ≠loss tooth struct, transillumination, fracture lines
2. Enamel Fracture = no d expose loss
3. *E-D Fracture = no p expose loss uncomplicated
4. E-D-P Fracture = p expose loss complicated crown

Question 7

Hard Tissue - last 2 types

Answer 7

5. Crown-Root Frac = e-d-cementum, can involve pulp comp/un
   - Fracture extend below gingival crevice + AB margin
   - Crown fragment can still be attached
6. Root Frac = c-d-pulp, less common, *middle 1/3 root
   - Classify if coronal fragment displaced
   - Classify location fracture line (coronal, mid, apical)
   - Horizontal/Vertical

Question 8

Soft Tissue =

Answer 8

PDL Involved

Question 9

Soft Tissue - first 2 types

Answer 9

1. Concussion (bruise) = injure tooth support structures, ≠mobility/displacement, v TTP
   - haemorrhage+odema, PDL fibres intact
2. Subluxation = ↑mobility, gingival haemorrhage, PDL fibres tear (tooth hurts, bleed g)

Question 10

Soft Tissue - second 2 types

Answer 10

3. Extrusion = partial disp out alveolar socket, extruded tooth longer>contralateral
   - Rupture perio fibres+neurovascular bundle, “ “, (occlusal interference)
4. Lateral Lux = disp other than axially, +comminution/fracture alveolar bone+socket
   - simultaneous rupture+compression PDL, disrupt n supply
   - crown disp labially
   - usually immobile, locked in bone
   - high tone percussion

Question 11

Soft Tissue - third 2 types

Answer 11

5. Avulsion = complete disp out socket, emerg replant/ milk
   - PD cells torn desiccate + ≠heal
6. Intrusion = upwards disp into alveolar bone
   - Extensive crushing PD structures
   - Disrupt n bundle
   - Most serious –> become necrotic