I'm not sure how valid (peer reviewed) this link is... https://foodary.com/130/acid-alkaline-nut-and-seed-products-food-chart-2/ There are a lot of different values of the acidity/alkalinity of nuts depending on what kind of nuts and how they are prepared. As a dietary viewpoint, it has a lot of beneficial nutrients. From a dental viewpoint, if someone has a lot of large fillings, he/she may need to consider having crowns due to its high teeth/filling fracture potential.
I would think that raw nuts, not rancid though, would be preferable to roasted for the teeth. Almonds, walnuts, etc. could be a nice addition to the diet. Getting enough calcium, magnesium and other minerals are overlooked by some.