Hi bro, wondering if you can give some insight of my case.
2 months ago, having intense pain, visited dental clinic and doctor said my upper left second molar is cracked/broken, but unsure how deep the crack is.
Doctor proceed with drilling some (as per picture attached) and did the filling. Was told after few days to weeks, when its totally no longer pain/sensitive then can consider to proceed with crowning.
Problem is, until now (exactly 2 month) sometime I still experience sensitive on the tooth (its not pain or merely 1 out of 10 pain, good thing is the intense pain I experienced beforehand is no longer there, and as of now i'm ok with hot/cold drink as well ) which causes I have yet to proceed with the crowning procedure. Could it be due to filling is too high and causes more stress on the filled tooth ?
Any recommendation how should I proceed with this. Thanks

the picture is not very clear to begin with and its no sufficient investigation for me to be sure whats going on.

When do you experience the sensitivity when it  happens?

Most likely i'd suggest for you to check with the dentist, do a vitality test on the tooth and take an xray to verify that it is totally fine before proceed with crowning.

And if its just a small crack on the surface. maybe consider just a onlay coverage over the surface to prevent the crack to progress much further.

It happen 2 months ago after biting into some semi hard food. It causes my molar to crack and had intense pain. First visit doc did a filling and asked to go back after no longer feel sensitive to proceed with crown. But I dragged this for 2 months because the sensitivity come and go.

Ytd decided to follow up with doc, did x-ray and I guess inflammation show on the root and doc advised to go with RCT before crown. Today did the root canal and hope everything goes well then will proceed with crown

Second from right is the x-ray of the affected tooth

This is the picture after root canal which I did this morning. Can see there's a crack line

it does look like the tooth has got a inflammation lesion at the tip. Its the upper left second last tooth it seems.

Glad you went for an x-ray. hopefully the RCT resolves your issue. 

Just back from dental, doctor asked to get whitening toothpaste because that's always stains on my gigi.
Got sidetracked by other question, i forgot to ask about the details of the whitening toothpaste.
What kind of whitening toothpaste the doctor mean? The common toothpaste I bought from the stall did mentioned whitening function too, i guess that's not enough? What kind of specific toothpaste should i get and where can i buy them?

What kind of specific toothpaste should i get and where can i buy them?

Just back from dental, doctor asked to get whitening toothpaste because that's always stains on my gigi.
Got sidetracked by other question, i forgot to ask about the details of the whitening toothpaste.
What kind of whitening toothpaste the doctor mean? The common toothpaste I bought from the stall did mentioned whitening function too, i guess that's not enough? What kind of specific toothpaste should i get and where can i buy them?

i have swollen gum, not painful. dentist ask to do root canal

did your dentist take any x-rays for do proper examination on the tooth before advising you for a root canal?

swollen and bleeding gums can indicate gum issues.

but if the issue originate from the tooth itself, it can cause swelling due to abscess buildup too.

did you get to buy any good whitening toothpaste that works?

not really 
My dental appointment is next week, i can check with my dentist if they complain again XD

yes x-ray taken. either do root canal or inplant

will gum recession result in tooth loss even if he practices good oral hygiene afterward?
how severe does it have to be before it causes tooth loss?
are there any other methods to restore the gums and cover back the teeth? 

implant is really the final option if the tooth is non salvagable. if the tooth is still restorable, would suggest for you to do a root canal first .

read that many against root canal......and if not properly clean will caused more issues.

will gum recession result in tooth loss even if he practices good oral hygiene afterward?
how severe does it have to be before it causes tooth loss?
are there any other methods to restore the gums and cover back the teeth?