Dr. Angelo Antonios Takos, D.D.S.

You can, but usually after a root canal the tooth will darken, Porcelain Veneers, if done correctly do not change the color of the tooth dramatically so it is preferable to get a crown on a root canal tooth
Dr Takos

Anesthesia is the same as extraction. For example, if your doctor gives local anesthesia (shot) for the extraction, no need to give more because the bone grafting procedure is not usually any more painful than the extraction, in fact, it's less painful. The only uncomfortable part of the process is the manipulation of the gum tissue to tuck the membrane that holds the bone graft in place. Bone had very few nerves, gum tissue had lots of nerves.

Usually, front teeth take very little time to extract. It all depends on the mobility of the tooth and the reason for extraction. For example, if the tooth is being removed due to gum disease, then the extracting time is relativity short, though there may be more bleeding due to the inflammation of the gums. If the tooth is being taken out due to decay then it may break and may need to be surgically extracted, which takes longer. Without X-rays, it's hard to give you a specific time. As long as the tooth isn't severely broken down, it's relatively easy, it's all technique, front teeth are rotated out, not pulled out. It's all about finesse.
Hope this helps.

No, root planning cannot make your teeth loose. That being said, if there is severe bone loss and there is excessive tartar build-up, the tartar can stabilize the teeth, but it is not a healthy condition, and as long as the tartar is there, the bone will get worse by the day. Root planing removes tartar below the gum line and helps relieve the inflammation in the gums and bone. As long as the damage is not too far along, the tooth should become less mobile over time. But root planing itself cannot make a tooth loose.