When disc brakes for high performance cars arrived on the scene we began to hear of warped brake discs on road going cars, with the same analyses and diagnoses. Typically, the discs are resurfaced to cure the problem and, equally typically, after a relatively short time the roughness or vibration comes back.
As a result, the cheek teeth, like the incisors, have evolved to continuously grow throughout life. In other rodents, the diet of tubers, seeds, and grain requires little chewing, resulting in little wear of the cheek teeth.
The tooth transition phase usually starts around age six, and by the time the child reaches 12-13, the permanent teeth should be fully in place. When the baby teeth, also known as deciduous teeth, are gone, there should be 32 permanent adult teeth. Baby teeth will usually fall out on their own, so itâs not necessary to extract them.