Photography Contraster Black - Soft Flexible - Buccal / LingualDescription Sterilization Soft Palatal Buccal Lingual Contraster is designed to give contrast to your images and eliminate elements not required in the picture. Obscures the inside of the mouth and the lips making the image more presentable for lectures, publications, marketing and patient presentation. Buccal Lingual photos can be taken with a completely black background. It can easily be bent into place for comfortable positioning for your patient.