Additionally you can ask your dentist to prescribe prevident5000 or gelcam. They are Rx strength fluoride passes and gels. If you have bleaching tray, you cam use them with the fluoride to combat sensitivity. Been doing it for years and patients report little to know sensitivity if used for an hour or so immediately after removing the bleach. Be sure to remove the bleach first:)
Your orthodontist may be able to correct the malocclusion quickly with Invisalign or short ther braces. The best way I've seen to retain the teeth in place once correct is to bond a wire on the lingual or tongue- side of the front 6 teeth, top and bottom. A bit more tedious to clean but teeth stay in place much better with no relation worries
Not sure what you're asking. If Invisalign, a toothed colored material can be used to hide the space until a permant replacement can be made once your Invisalign is complete. If you are just missing a tooth, you can replace it with an implant. Usually a removable tooth can be made to fill the gap during healing. If you are replacing a tithe with a fixed bridge( a crown on either side of the space with a calle tooth between, all one piece that gets cemented in, you will get a temporary plastic bridge to wear until your porcelain bridge is completed. I hope one of these answers helps you:)