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.
My 6 year old son has a permanent tooth coming in behind his front bottom tooth. The baby tooth that the permanent tooth is growing behind is a baby tooth that is two teeth that budded together before it grew in when he was just a little guy.So he had 19 baby teeth instead of 20.rdinarily, as the permanent teeth push up, the roots of the baby teeth dissolve and the baby tooth eventually falls out, allowing the permanent teeth to come in. Sometimes, the baby teeth donât want to leave the mouth, and the permanent teeth come in right behind them.