Pharmacology · patient case question
Which agent is most commonly used for ORAL conscious sedation in dentistry?
Patient case: Anxious adult with a traumatic dental history
Patient: Male, 44 years old
Chief Complaint: Needs restorative treatment but is visibly frightened.
Background: He describes a previous dentist who treated him without adequate anaesthesia and, when he complained of pain, told him to stop crying like a baby. He has avoided dental care for eleven years.
Current Findings: Tense, tearful, hyperventilating slightly on sitting in the chair. Multiple untreated carious lesions.
Show answer and explanation
Correct answer: A. Triazolam
- A. CORRECT. Triazolam is the benzodiazepine of choice for oral conscious sedation in dentistry. Its rapid onset (roughly 30–60 minutes), short half-life of about 1.5 to 5 hours, and reliable anterograde amnesia match the length of a dental appointment closely, and recovery is quick.
- B. Diazepam has a very long half-life with active metabolites, producing prolonged sedation and a hangover effect that far outlasts the appointment.
- C. Alprazolam is used for anxiety disorders. Its onset and duration profile is less suited to procedural sedation than triazolam's.
- D. Midazolam is the standard agent for INTRAVENOUS sedation. Its oral bioavailability is poor and unpredictable, and its oral use in dentistry is largely confined to pediatric practice.
Note: Typical oral triazolam protocol: 0.125–0.25 mg given roughly one hour before the appointment, with an escort arranged and driving prohibited for the rest of the day.