1 Sometimes, the larger molars cause more discomfort due to their larger surface area that can't slice through the gum tissue as an erupting incisor is capable of doing.  Most children have a complete set of 20 deciduous teeth (known as baby teeth or milk teeth) by 30 months of age.
Nociceptive, or somatic, pain is the common discomfort we have all experienced as a result of injury -- a paper cut, a broken bone, or appendicitis, among other things. Somatic pain makes sense to us; we can understand the patient's pain.
1 Common examples of nociceptive pain related to back pain include: pain after trauma (e.g. back pain after a car accident or a fall), pain after back surgery, and arthritis pain. 2  Nociceptive pain is usually localized and gets better with healing.