There are 2-3 bite marks, or some other type of damage to one half of the model,  please see pics.

Get your hands on this antique Dental Dentistry Teaching Model Tooth, perfect for those in the medical field! Made from plastic material and measuring 6 inches in size, this Student Dental Dentistry Teching Model Molar Tooth w/Cavity Decay is a unique addition to your collection. This masterpiece was made in the United States and is an unsigned piece, making it a rare find. Its age is unknown, adding to its enigma.

This two-piece teaching model tooth is a great conversation starter for those interested in medicine and dentistry. It falls under the categories of Collectibles, Science & Medicine (1930-Now), Medicine, Dentistry and Medical Devices. Don't miss out on the chance to own this piece of history!