QUOTE(darachan @ Mar 27 2024, 01:47 PM)
May I know is an porcelain overlay a good approach to fixing a molar that has quite a bit of composite and amalgam works before, and showing some cracklines but dentist said visually looks intact despite some stain along the crackline and a bit of whitish spot along the crackline (possible demineralised but not cavitated). Reason to attempt the fix due to sensitivity to acidic fruit and sugary intake will trigger sensitivity and somewhat mildly discomfort sort of pain but isn't quite a toothache sort of pain, doesn't persist as long as everything is brushed and cleaned the discomfort goes away until another time of lots of sugary, carbohydrates,acidic food intake.
Suspect of microleak and also the tooth can be painful if eating nuts or hard object that press on the certain spots on the occlusal/existing restoration.
How would overlay compare to others like inlay/onlay or basic restoration. As it seems the overlay does cost quite a bit almost the price of RCT.
Does it have good outlook to solve the sensitivity issue and does it lasts?
Your symptoms does look like a microleakage into the filling and possibility developing crack into the tooth.
And onlay covering all your tooth cusps or the peaks would be what you require, or its commonly known as overlay as it covers over the whole of the top surface of your tooth.
Inlay would not be an option to treat your symptoms as it does not stop the crack progressing further.
Basic restoration as well will not help unless your dentist opt to do an overlay using the same basic restoration material that is a composite material where durability will be lesser compared to porcelain.
I believe your case will not require any RCT to be done, just an onlay as of now.
And yes it does cost quite a fair bit for a porcelain Onlay, most likely a eMax or lithium disilicate material.
what the onlay would do it that it would cover the whole of the top surface of your tooth and prevent the microcracks from progressing further thus reducing/minimizing the sensitivity or mild discomfort that you are having due to the cracks.
Another alternative would be a crown but it would mean the whole of your tooth has to be reduced much more to fit a crown on.