These are incisors, the front teeth, and look like lower jaw incisors to me. Looking at the root end of the teeth there is quite a wide root canal (hole!), this would suggest that these were milk teeth. Looking at two sets of lower milk teeth from Chimpanzee they are not the same. There is no scale on the photographs which may help narrow things further. Take another two photos like 68 and 69 with a ruler, make sure the flash goes off - they are much better photos.