Make sure you get plenty of teeth. You can NEVER have too many teeth. I had 3 one-gallon jars each filled over half way with teeth and I wish I had more. Remember that most teeth are extracted for a reason....a rotted tooth does you no good. You need them as pristine as possible, and you therefore need lots of teeth to sort through. Oral surgeons pull more 3rd molars than any other tooth, and these are worthless to you in dental school.