Study of Buprenorphine HCl Buccal Film in the Treatment of Dental Pain

Time-weighted sum of pain intensity difference from baseline to 8 hours (SPID-8) where total score ranges from -80 (worst) to 80 (best) and a higher value indicates greater pain relief. Pain intensity was recorded using an 11-point numeric rating scale (NRS), where 0=none and 10=worst pain imaginable, in response to "What is your pain level at this time?"

Time-weighted sum of total pain relief over 8 hours (TOPAR-8) where total score ranges from 0 (worst) to 32 (best) and higher values indicate greater pain relief. Pain relief (PAR) was recorded using a 5-point categorical rating scale, where 0=none, 1=a little, 2=some, 3=a lot, and 4=complete, in response to "How much relief have you had from your starting pain?"

Time-weighted sum of PAR and pain intensity difference (PID) over 8 hours (SPRID-8) where total score ranges from -80 (worst) to 112 (best) and higher values indicate greater pain relief. PAR was recorded using a 5-point categorical rating scale, where 0=none, 1=a little, 2=some, 3=a lot, and 4=complete, in response to "How much relief have you had from your starting pain?" PID determined as the change from baseline pain intensity assessment. Pain intensity was recorded using an 11-point NRS, where 0=none and 10=worst pain imaginable, in response to "What is your pain level at this time?"

Time-weighted sum of PAR and PID over 2 hours (SPRID-2) where total score ranges from 0 (worst) to 8 (best) and higher values indicate greater pain relief. PAR was recorded using a 5-point categorical rating scale, where 0=none, 1=a little, 2=some, 3=a lot, and 4=complete, in response to "How much relief have you had from your starting pain?" PID determined as the change from baseline pain intensity assessment. Pain intensity was recorded using an 11-point NRS, where 0=none and 10=worst pain imaginable, in response to "What is your pain level at this time?"

The maximum PID at any time following dosing determined from the change from baseline pain intensity assessment. Pain intensity was recorded using an 11-point NRS, where 0=none and 10=worst pain imaginable, in response to "What is your pain level at this time?"

Maximum pain relief (PAR) at any time following dosing, recorded using a 5-point categorical rating scale, where 0=none, 1=a little, 2=some, 3=a lot, and 4=complete, in response to "How much relief have you had from your starting pain?"

Time to onset of analgesia defined as median time to perceptible pain relief if confirmed by experiencing meaningful pain relief from time of study drug administration.

Duration of analgesia was the median time to use of rescue medication; earliest concomitant medication start time for medications identified as rescue medications from time of study drug administration.

Subjects rated the global effectiveness of study drug as poor, fair, good, or excellent, in response to "Overall, how would you rate the study medication you received for pain?"

Investigators rated the global effectiveness of study drug as poor, fair, good, or excellent, in response to "Overall, how would you rate the study medication for this subject?"

Cognition assessed using computer-based CNS Vital Signs® neurocognitive function test (CNS-VS), including symbol digit coding, Stroop test, and shifting attention test to measure cognitive flexibility, executive functioning, processing speed, and reaction time(*). Scores are computed from raw score calculations using the data values of individual subtests. An asterisk denotes that "lower score is better", otherwise higher scores are better.