Instead of using the rerooting tool to section the hair, I'd recommend getting a dental pick. Next to my scalpel and seam ripper, the dental pick is in my top 3 tools that I use!
It's not sharp like a reroot tool, so less chance of poking things you didn't mean to poke. The slightly hooked ends means you can get into all kinds of nooks and crannies. It's not just great for sectioning loose hair -- it can help arrange the part after everything is rooted and glued, sectioning plugs of rooted hair for braiding, etc.
This is similar to the one I use: https://www.amazon.com/Professional-Dental-Tarter-Scraper-Stainless/dp/B00KCXT7RC/ref=sr_1_14?dchild=1&keywords=dental+pick&qid=1625623880&sr=8-14
They're only a few dollars at the drugstore. Highly recommend!
Shouldnt present too much of an issue but be sure to prime first. That will really show off any issues.
You can also try and clean it out with a dental pick. $8.00 on amazon That could really get into the panel lines and clear it out.
Not OP but we use a dental pick tool for daily cleaning/ clearing it out. Then we burn them off every so often (once every couple weeks, depending on how heavily it's been used)
>I rub my tongue over my teeth, it feels like something sharp is poking it.
This is a sincere question. Is there any way you could not rub that spot with your tongue? If that's not possible, you can buy something like this, and use it to get rid of that bit of tarter poking your tongue. After you remove that piece of tarter poking your tongue, I would just wait until your dental appointment so you don't accidentally damage your teeth or gums. PS: I am not a dental professional so take my suggestion for what it's worth.
I floss regularly (may not every day). I have this one space where food gets stuck and flossing won't get it out, so I purchased a dental tool to help me get it out. https://www.amazon.com/gp/product/B00KCXT7RC
Happy to help...
Not sure what your budget is so I went with my cheapest advice. Let me know if you are looking to spend more or want a higher quality set up
Equipment
Get a basic rig and quartz banger. The one I linked is a set (rig+banger) but you often need to buy these separately. Buy online if you can: 99% chance your local head shop will rip you off badly. At least buying online, you buy the chinese crap at a reasonable price. If you don't know anything about glass, don't spend more than $50 on a rig.
If you have to buy a quartz banger separately, don't spend more than $15-20 on it. Again, buying from a reputable site online will insure you actually get a quartz banger and not a glass one. If you want to get into it more, look into carb caps and inserts down the line, but you don't need those to start off imo (although I would recommend splurging if you can afford to).
Make sure your banger and rig FIT. If you buy a rig with a 14mm male end piece, you'll need a 14mm female banger to go with it.
You'll also need a dabber which is just a tool to put the dab into the banger. No need to get fancy, a stainless steel dentist tool will work just fine
Lastly, a blow torch. I recommend going to your local hardware and picking up a standard propane torch. These are much more reliable than butane torches in the long run, and are much, much cheaper to refill.
All in, you should look to spend ~$80 for your first set up. If you're ever looking to upgrade, I'd start with getting a quartz insert and carb cap first (look up videos on youtube to learn to use).
Online Stores
Here are some places I buy from regularly: thedabstore.com thedablab.com kravinglass.com neglassart.com/ aqualabtechnologies.com/ ...there are plenty of reputable places out there, just do a little research. Most of these sites regularly have 15-40% sales. Try not to buy stuff not on sale (they run sales more often than they don't). Don't forget to use the promo codes!
Dabbing
Once you have your set up, the games begin! The most "difficult" part now is getting the timing right. This will be trial and error. Always time your dabs (heat up time + cool down time).
That might look like this: you torch the banger for 30 seconds, then let it cool for 30 seconds, then dab. Did the dab sizzle a ton or turn black and burn the sides of the banger? Probably too hot. Need to extend cool-down time, or shorten heat-up time.
If the dab is melting but it's just chilling in the banger, not producing much smoke: you didn't get it hot enough, again adjust times so it's warmer when you hit it.
There are a million videos on youtube teaching this part, just do some research and experiment.