This is the place to post questions and discussions on usage and style. The members of the Wordwizard Clubhouse will also often be able to help you to formulate that difficult letter.
Steve, those things are called "mouth guards". They aren't just for combat sports though. They can be used in any sport where there might be impact to the mouth area such as hockey, basketball, American football. I think they originally were for boxing but are becoming more common in many other sports. I think they are required in youth soccer (football) in North America but I don't think many pro players wear them in that sport.ACCESS_POST_ACTIONS
Gentlemen a new and excellent use for mouth guards is in the prevention of snoring. My sweetheart who I love and adore and who shares my bed was a snorer of massed pipe band proportions. She now wears a mouth guard that pushes her bottom jaw out slightly. Net result is that we now only have small snuffles, the quality of her sleep has improved, she wakes up refreshed and overall is in much better mood. A win/win if ever there was one.ACCESS_POST_ACTIONS
Signature: "The question is," said Alice, "whether you can make words mean so many different things."