Teething is generally associated with gum and jaw discomfort as the infant’s tooth prepares to erupt through the gum surface. As the tooth moves beneath the surface of the gum tissue, the area may appear slightly red or swollen. Sometimes a fluid-filled area similar to a blood blister may be seen over the erupting tooth. Some teeth may be more sensitive than others when they erupt. The larger molars may 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. With the exception of the eruption of the third molars (wisdom teeth), eruption of permanent teeth rarely cause the discomfort associated with eruption of “baby” (primary or deciduous) teeth.