Do not use the Odontoscope if it appears to be of poor quality: not smooth throughout, has small excrescences, has porosities. Do not use the Odontoscope if the mirror is deformed or scratched. A mirror deformation or scratches have no physical risk, but the image taken of the dental arches will be distorted and therefore unusable. The mirror is made of HIPS plastic. If it’s broken, don’t use the Odontoscope. As opposed to dentists’ impression trays that are made of hard plastic, the Odontoscope is made of a soft material. If the material has hardened, do not use the Odontoscope.