Here's the best advice I can give: Ask your surgeon what prosthodontist he recommends for making obturators for his patients. Go to that person (he's a dentist who makes dentures, and other oral appliances to replace lost parts of oral structure.) and see what he says he can do for your husband. For a small fee, you will get the advice you need. Be certain that it is someone accustomed to working with cancer patients, and not just someone who makes dentures. Your surgeon probably has a practitioner that he routinely sends his cancer patients to.