Because grinding often occurs during sleep, most people are unaware that they grind their teeth. However, a dull, constant headache or sore jaw when you wake up is a telltale symptom of bruxism. Many times people learn that they grind their teeth by their loved one who hears the grinding at night. If you suspect you may be grinding your teeth, talk to your dentist. He or she can examine your mouth and jaw for signs of bruxism, such as jaw tenderness and excessive wear on your teeth.
The premolar teeth, or bicuspids, are transitional teeth located between the canine and molar teeth. In humans, there are two premolars per quadrant in the permanent set of teeth, making eight premolars total in the mouth.
1.Both types of maxillary premolars resemble each other more than do the mandibular premolars. 2.A maxillary first premolar is larger than a maxillary second premolar. 3.Both maxillary premolars erupt earlier than the mandibular premolars. 4.crown is centered over the root and shows no lingual inclination.