Mepivacaine 3% at 5ºC

Mepivacaine 3% at room temperature

change the temperature, 3% at 5ºC

Pain during injection, caries removal, access cavity, and instrumentation were recorded. The patients received a full description of the procedure, and patients were asked to rate their current pain and their anxiety with a descriptive scale (Heft-Parker Visual Analog Scale (VAS) before starting the treatment. A visual analog scale of 170 mm that the start points on the left side means "no pain" and the endpoint on the right side means "severe pain". The participants indicated their pain level by marking a point on the scale that best represented their experience. For data interpretation, the Visual Analog Scale (VAS) was segmented into four categories: no pain corresponded to 0 mm on the scale, mild pain as greater than 0 and ≤54mm, moderate pain defined as greater than 54 mm and less than 114 mm and severe pain defined as 114 mm or more.