Ellis and Devi Tooth Fracture Classification

The video tutorial explains the Ellis and Devi classification of fractures, detailing nine classes ranging from enamel fractures to complex cases involving pulp exposure and tooth displacement. Each class is defined by the extent of damage to the tooth structure, including enamel, dentin, and pulp, as well as the tooth's vitality. The tutorial also covers avulsion and fractures specific to deciduous teeth, providing a comprehensive overview of dental trauma classification.

What does Class 1 in the Ellis and Devi classification signify?

• Fracture involving root only

• Fracture involving pulp exposure

• Fracture involving enamel only

• Fracture involving enamel and dentin

Which structures are involved in a Class 2 fracture according to Ellis and Devi?

• Root only

• Enamel and dentin

• Enamel, dentin, and pulp

• Enamel only

What is a characteristic of a Class 3 fracture?

• Involves enamel only

• Involves root only

• Involves enamel and dentin without pulp exposure

• Involves enamel, dentin, and pulp exposure

What happens to the tooth in a Class 4 fracture?

• The tooth is missing

• The tooth is vital

• The tooth is displaced

• The tooth is non-vital due to trauma

What is the defining feature of a Class 5 fracture?

• The tooth has a root fracture

• The tooth is displaced

• The tooth is non-vital

• The tooth is missing due to avulsion

In a Class 6 fracture, which part of the tooth is affected?

• Crown only

• Enamel only

• Root only

• Crown and root

What does Class 7 in the Ellis and Devi classification describe?

• Fracture involving root only

• Loss of crown

• Fracture involving enamel only

• Displacement of the tooth without fracture

What is the condition of the crown in a Class 8 fracture?

• The entire crown is missing

• The crown is intact

• The crown is partially missing

• The crown is displaced

What type of tooth does Class 9 refer to in the Ellis and Devi classification?

• Fractured tooth

• Permanent tooth

• Deciduous tooth

• Impacted tooth

Which class involves a fracture that can occur in a deciduous tooth?

• Class 5

• Class 7

• Class 1

• Class 9