This study is about understanding how drinking alcohol affects dental treatment success. **Seventy adults** will participate, divided into two groups: those who drink alcohol and those who don't. Each person will have a dental procedure involving the injection of lidocaine, a medicine that numbs an area to stop pain. If a participant feels pain during the procedure, they will rate it on the Heft-Parker scale, where less than 55 means it's successful. The study includes people with certain dental conditions and medical history, but excludes those with more serious health problems or special conditions like pregnancy.

• **Duration**: Study involves one dental visit.
• **Compensation**: No mention of payment.
• **Risks**: Possible pain or discomfort during treatment.