Dental OSCE (Objective Structured Clinical Examination) Practice Exam

What is a common consequence of causing a pinpoint exposure during excavation of a cavity in a young tooth?

1. Necrosis

2. Possible need for endodontic treatment

3. Direct pulp cap may be considered

4. Extraction may be required

The correct answer is: Direct pulp cap may be considered

Causing a pinpoint exposure during the excavation of a cavity in a young tooth is significant because it indicates a minor exposure of the pulp tissue. In such cases, a direct pulp cap is a potential treatment option. When this small exposure occurs, if the pulp is still vital and there is no significant contamination or symptoms of irreversible pulpitis, applying a biocompatible material (such as calcium hydroxide or a resin-modified glass ionomer) can help protect the pulp and promote healing. The goal is to maintain the vitality of the pulp and allow the tooth to continue to develop normally. This approach is particularly relevant in young teeth, which likely still have an open apex and are more resilient to trauma and treatment interventions. Indications for a direct pulp cap are rooted in the understanding that the tooth may still be at a developmental stage where preservation is favorable. The other options represent more severe consequences that are generally not associated with a pinpoint exposure. For instance, necrosis or the need for extraction would arise from more extensive pulp damage or disease, while endodontic treatment typically becomes necessary only after a significant exposure or irreversible pulpitis has developed. Thus, considering the context of a pinpoint exposure, a direct pulp cap is the most appropriate and likely consequence