Types of surgical sutures are silk, cotton and metal by class. The type the Doctor uses will depend on the type of wound or surgery that is involved. Sutures are very involved and I hope you never need them because if you do, that means that you are going to hurt for a while. Not Good!!! But if you have a good Doctor, he will know what is best to use. You can find more information here:
. http://emedicine.medscape.com/article/884838-overview