EN-D3

A patient reports dull pain 3 days after root canal therapy, with percussion tenderness but no swelling. This is most likely due to:

Sodium hypochlorite accident
Flare-up due to periapical inflammation
Overextension of obturation material
Vertical root fracture

Which of the following statements correctly describe the specified Ellis fracture classes?

(Multiple Correct Answers)

Class I: Involves enamel only.
Class IV: Traumatized tooth that has become non-vital, with or without a previous fracture.
Class VI: Crown fractured with pulp involvement and root fracture.
Class VIII: Fracture of the tooth in which the crown is completely lost but the root is intact.
Class IX: Traumatic injuries involving all the enamel, dentin and pulp of permanent teeth

During restorative preparation on a mandibular premolar, the operator accidentally causes a small pulp exposure. Considering the tooth is vital and the patient is young, which of the following is the best management?

Direct pulp cap with calcium hydroxide/MTA
Immediate root canal treatment
Extraction
Place IRM and observe

In the management of avulsed permanent teeth, the splinting protocol recommended is:

Rigid splint, 6 weeks
Flexible splint, 1–2 weeks
No splint required
Rigid splint, 3 months

Which of the following statements are true in relation to traumatic injuries?

(Multiple Correct Answers)

Concussion: Tooth is tender to percussion but not displaced.
Extrusion: Tooth is displaced apically into the alveolar bone.
Avulsion: Complete displacement of the tooth out of its socket.
Intrusive Luxation: Tooth is displaced coronally out of the socket.
Subluxation: Tooth is mobile but not displaced.

During retrograde filling in apicoectomy, the most common complication of using amalgam is:

Corrosion and leakage
Perforation
Root resorption
Calcific metamorphosis

A patient presents with intrusive luxation of a permanent maxillary incisor. Which of the following is true?

Best prognosis among luxation injuries
Often associated with alveolar bone fracture
High risk of pulpal necrosis and root resorption
Always managed by extraction

Which of the following factors influence the long-term success of reimplanted teeth?

(Multiple Correct Answers)

Extraoral dry time
Type of storage medium
Stage of root development
Patient’s age
Color of the crown

Which of the following is most likely to occur after overextension of endodontic obturation material beyond the apex?

Vertical root fracture
Persistent periapical inflammation
Sodium hypochlorite accident
Root resorption

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