My son has a bad cavity in his back right bottom molar. He is 18 and his wisdom teeth have not come in yet. The dentist says that the tooth is bad and the cavity goes to the root. He wants to do a root canal on this tooth costing $1400. My cost with insurance is over $700. My question is wouldn't it be better to pull out this sick tooth that he may lose anyway to make room for a new healthy wisdom tooth to take its place? The dentist says the wisdom tooth is in line but slightly angled downward at the front of the tooth and may not come in straight. I have always been told by other dentists and older people that teeth have a way of adjusting themselves. My father had a wisdom tooth fill in a lost molar with no problem many years ago.... What should we do? I don't think the insurance will cover x-rays for a second opinion.