Tension headaches and vertigo symptoms can occur when the lower jaw is positioned too far back which puts tension on the temporalis muscles and puts pressure on the inner ear. I would recommend having your dentist check the bite to see if you can have a bit more freedom of movement anteriorly (forward). You may have had some bite issues to begin with that were not fully symptomatic and this procedure sort of tipped you over the edge. If bite adjustments do not resolve the issue, I would recommend you see a neuromuscular dentist in your area.
Hello.To me, it looks like its an older composite filling on the tooth that is just picking up some stain and you are just feeling the edge of it as it is degrading over time. You just need it replaced with a new composite filling, a quick and easy procedure. Composite fillings (bonding) will pick up stain overtime. It is highly unlikely to have a crack on the side of a tooth that forms a perfect square or oval.
Choosing veneer opaqueness depends on the darkness of the tooth structure underneath the veneer. More translucent veneers look more natural but let more color through and more opaque veneers look less natural but block more color. When your dentist prepares your teeth for the veneers, they should be taking a shade match of your teeth underneath with a photo and sending it to the lab. Then the lab can look at your shade underneath and the final shade you are trying to achieve after you are all done and choose the appropriate ingot opaqueness for the veneers that will be a good balance between opaqueness and translucency. The thickness of the veneer will also affect the color transmission. Your dentist should try on the veneers with try-in cement paste for you to see the final color prior to bonding to make sure that you are happy with the final look.Â
It does look like decay under your crown. I think you will be best off with a new crown if possible because it will be difficult to fill it nicely as it probably wraps around in between your teeth. Also, some decay may have traveled up underneath your crown.  If the decay goes extensively below the gum surface, there is a chance that the tooth may not be repairable and may require an extraction. An x-ray would tell us more. The sooner you have it looked at, the better. Good luck!
It is strange to get a popping noise. One possibility is that one or more veneer is partially debonded. Your dentist would have to examine it more closely to identify the cause. Yes, if the veneers do need replacing, temporary ones can be placed during fabrication of the new veneers.Â
