Throughout our lives, our bodies are always changing -- this includes our teeth. The teeth have a natural tendency to shift over time. Retainers help to keep them in the position they are after the braces. If your retainer still fits in well, this is a good thing. If it is tight when you put it...
It is difficult to know what you are referring to by "bite plate". My assumption is that you are talking about a night guard (a device worn, generally at night, to protect your teeth from the effects of clinching and grinding). If you had the night guard fitted before orthodontic treatment began...
A retainer can be made that has a fake tooth attached to it as a temporary solution. In order to make sure that the other teeth don't tip into the open space, the retainer must be worn full time (of course, it can be taken out for eating and brushing). This is a great option to maintain...
