What's typical?

Although timing varies widely, babies often begin teething by about age 6 months. The two bottom front teeth (lower central incisors) are usually the first to appear, followed by the two top front teeth (upper central incisors).

Classic signs and symptoms of teething include:

• Excessive drooling
• Chewing on objects
• Irritability or crankiness
• Sore or tender gums
• Slight increase in temperature — but no fever

Many parents suspect that teething causes fever and diarrhea, but researchers say these symptoms aren't indications of teething. If your baby has a rectal temperature of 100.4 F (38 C) or diarrhea, talk to the doctor.