“…For example, Appendino et al demonstrated that a jaw opening, tongue depressing device, used in conjunction with VMAT, provides the ability to reduce mean dose to the mandible, parotid glands and most the oral cavity [5] . Reproducible cheek displacement is also desired in some patient cases to further immobilise oral tissues and ensure the buccal mucosa are outside of the high dose region [11] , [12] .…”