Dental Assistant Practice Exam

Which type of dental fracture presents with pulp exposure?

1. Enamel Fracture

2. Type I Fracture

3. Type II Fracture

4. Type IV Fracture

The correct answer is: Type II Fracture

A Type II Fracture is characterized by pulp exposure. This type of fracture typically involves the enamel and dentin and extends into the pulp chamber, which results in the dental pulp being exposed to the oral environment. This exposure can lead to sensitivity, pain, and an increased risk of infection, as bacteria from the oral cavity can enter the pulp tissue. In contrast, an enamel fracture only affects the outermost layer of the tooth, the enamel, without involvement of the dentin or pulp. A Type I Fracture generally refers to a fracture that only involves the enamel and possibly the dentin but does not reach the pulp. Type IV Fracture, on the other hand, usually indicates a more complicated fracture that may involve significant portions of both the facial and lingual surfaces and can impact the pulp but is more severe in extent compared to a Type II Fracture without definitively exposing the pulp. Understanding the types of fractures and their implications helps in determining the appropriate treatment. In the case of a Type II fracture, immediate intervention is often necessary to prevent complications.