Wedge Mouth Prop. Clear plastic mouth wedge. The use of a mouth gag or speculum is a common procedure in small animal medicine. Maintaining an open mouth is a requirement for many dental cases and for proper examination of the upper airways. The wedge is a clear plastic mouth prop that features: Anatomic design for proper, secure placement between premolars and molars. Radiolucent for unobstructed radiographs. Autoclavable. A hole is provided to attach a suture for emergency removal. Can be used if canine teeth are absent. Soft and pliable for patient comfort. Suggested uses: intubation, oral surgery, dental procedure, oral exam, radiographic exam. Available in Small or Large.