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? 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.