Dental Pain Study of Analgesics in Patients Undergoing Molar Removal

Randomized, Double-blind, Parallel Group, Single-center, Placebo-controlled Study to Evaluate Efficacy and Safety of Analgesic Combo in Prevention and Treatment of Post-surgical Dental Pain in Healthy Subjects

• Accessing the efficacy and safety of pregabalin when used alone and in combo with acetaminophen in a dental pain model.
• To test whether pre-operative dose of pregabalin increases the time to significant post-operative pain (NRS ≥ 5), and hence time to first analgesia consumed post-operatively.

This is a 5 arm randomized, double-blind, parallel group, single-center, placebo-controlled study to evaluate the efficacy and safety of pregabalin-acetaminophen combination in the prevention and treatment of post-surgical dental pain in healthy patients.

Subjects in every treatment arm will receive a dose 60 min prior to surgery. It is not required to receive a post-operative dose if patient does not feel pain at a scale of NRS≥ 5. Dose 2 will be given post-surgically when patients report at least moderate pain on the categorical scale and a score of ≥5 on 0-10 PI-NRS. Subsequent to dose 2, patients can request rescue analgesic at any time.

Inclusion Criteria:

• Patients who are scheduled to undergo the surgical removal of up to 4 third molars of which at least 2 have to be mandibular molars with a difficulty rating of 4 or 5.
• Patient must have a negative urine drug screen for drugs of abuse (including tobacco) at screening and at the day of surgery.
• No alcohol for a minimum of 1 day prior to the surgery.

Exclusion Criteria:

• Patients should not be experiencing oral infections or symptoms of concomitant illness at the time of a scheduled surgery.
• Patients with a history of any type of malignancy within the past 5 years other than minor skin related cancers.
• Patients who currently have or have had a history of uncontrolled hypertension.
• Patients with a known allergy or hypersensitivity to any local anesthetic drug, NSAIDs, gabapentin or pregabalin;.
• Patients with conditions that affect the absorption, metabolism, or passage of drugs out of the body (e.g., sprue, celiac disease, crohn's disease, etc.)