I also have an ongoing tooth problem. But it's not because of old teeth it is because a new (supernumerary) tooth. It has grown almost 5 years ago and it was too much pain as it grew right between the first premolar tooth.

I also went to the dentists and all has their own descriptions and treatment suggestions.

I was also sure as hell not wanting to remove any of the tooth so tried searching my options in Ayurveda to live with it.
The first thing was to ease pain so,

• I started pulling with coconut oil twice a day.
• Replaced my toothpaste with Ayurvedic one which has Red ochre, Piper longum, Piper nigrum, Zingiber officinale, Zanthoxylum armatum, Oil of Syzygium aromaticum and Mentha piperita](https://www.daburdentalcare.com/clinical-trial-summary)
• Started chewing Tulsi or Guava leaves once in a day.

The pain subsided. It did come back recently and I followed the same, it again eased.

To maintain the tooth and the gap that has formed in between I normally brush twice a day except as I said when there's pain.

The guava leaves are very effective to cure the tooth pain and so are the Ayurvedic ingredients mentioned above.