Certain signs may indicate that you have a diseased tooth or infected nerve and therefore may need a root canal. 1  These signs include: 2  Minimal to severe pain. 3  Tooth discoloration. 4  Swelling and irritation in the surrounding gum tissue. 5  Signs of infection visible on a radiograph.
Timeframe. The United States Postal Services reports that as of January 2011, it takes an average of one to three days for First-Class Mail to arrive at its destination. Priority Mail takes an average of one to two days to arrive, according to the USPS. USPS only includes the time a package stays in transit in their estimations. Packages dropped off at a post office during business hours usually leave that day. Packages dropped off after hours may take an additional day.
How Long Does Priority Mail Take? July 20, 2009. When sending something by first-class mail doesn't fit your needs, the United States Postal Service provides additional services that can get the item to its destination faster and allow you to follow its progress.