Black lines on both sides of a molar, along gum line

[Prodromoi]

Hi. I'm not sure if I'm the right person to be on the forum. I've never been afraid of the dentist, and never had a problem with drilling without sedation.

I've been quite nonchalant with my teeth, and only ever brushed them once every day (in the morning). From now on I've started brushing morning and night AND started flossing twice a day... which I've previously been horrible at.

But recently, I've noticed something with my teeth that I hadn't noticed before. I notice two black lines along the gum line of the left mandibular secondary molar. I couldn't get a proper close up picture, because my cell phone can't fit into my mouth lol. But I did the best I could. This is only the one side.
The other side of the molar, the black line is much thinner. There does not appear to be any black on the back of the molar.

Another important factor. I'm 30 years old. My wisdom teeth haven't gotten out yet, so it's still in there behind the molar with the black lines. I am not feeling pain at all.

However, I am feeling a strange feeling of the gums, front teeth, feeling a little "tender" or "tight." It's difficult to explain.


I'm thinking: Worst case scenario is... Chronic Periodontitis for the gums... and a real bad cavity that's gotten to both sides of the molar, and I have to do something more invasive.

Best case scenario is... this are just Chromogenic black stains, which often form along the gum line.
Still doesn't explain the gum recession though. It seems a bit excessive, and I haven't even thought about it before.

My dentist appointment is at the 20th (in 13 days). Should I hurry up the appointment because of the doubt, or isn't it acute enough because I am not experiencing any pain? I read that Periodontitis don't experience pain as it progresses.

Attachments included. One for the black line. Another for the lower teeth recession.

Hope any of you professional dentists, or other folks, could help me with this uncertainty.

 

[Gordon]

There's a pretty obvious cavity in the molar, the other teeth look OK from that photo, it's not a massive amount of tissue loss, but it's hard to be sure.

 

[Prodromoi]

Thanks. But if it's so large and long, wouldn't I feel some pain?

How long should I wait? Is it ok to wait 13 days?
I went to the dentist early morning today, and he looked quickly at it and said
"nah.. that's nothing to be worried about. just wait until 20th"

 

[lillyh]

my husband had several teeth that contained the same cavitys as your teeth and he never had pain..Until he let them break off below the gum line..Then the trouble started..So you should be good till the 20th

 

[Prodromoi]

Since the "cavities" are on both sides of the tooth. Does that make it likely that I may have to get rid of the entire tooth?

 

[lillyh]

Maybe not...I had a cavity on both sides of my tooth and they just filled them both..