Suzane
Before spending any money on sprays, pills or dental fixes, get a sleep study done on your husband first to see exactly what is wrong with him that would cause him to snore. There are several types of sleep apnea that he could have, and dental appliances and even the regular CPAP and BiPAP machines will not help or treat some of the types of sleep apnea. So a sleep study is a must to find out what is the exact cause of his snoring first! If he has got sleep apnea, he might have to go back and have another sleep study done to determine the type of machine he will need to treat it and the settings that he will need to properly treat it! If indeed it is sleep apnea, there is no cure, just treatment to control it! I know I have complex sleep apnea, it took quite a while to get mine diagnosed and finally get me on the right type of treatment! I use the ResMed VPAP Adapt SV machine, with supplemental Oxygen . my machine is a type of ventilator, that is used to treat central apneas. Pills, sprays, and dental appliances and also standard CPAP and BiPAP can not treat central apneas. because unlike the normal sleep apnea when ones throat just colaspes on its self, central apneas are cause, because for what ever reason the lungs are not being told to breath and function properly. And that can be caused by a host of different reasons, but the treatment is usually pretty much the same, the need to use an ASV machine instead of the normal CPAP or BiPAP machine. which can in many cases just make the central apneas worse.
So the first thing to do is get him the proper diagnosis! and that is done through having a sleep study done on him!
I wish both you you well and hope that he can get a sleep study done soon!
Good Luck to you both!
White Beard
P.S. Suzane if your husband does have sleep apnea, it really needs to be treated, promptly and properly, as it can cause some pretty serious complications over time. I would suggest that you check out this web site for help and information concerning sleep apnea: http://www.apneasupport.org/