How long should it take to heal for elderly (88years old) tooth extraction?

Not long: Generally, extraction sites are healed within 7-10 days. It may be slightly longer as you get older, but not much...Assuming there are no complicating medical conditions.

Varies: Healing in the elderly can be retarded, but several weeks additional to the "normal" range is not unlikely. Have patient follow up with doc if concerned.

Depends: Wound healing is dependent upon not only the physical status of the individual, but the mental status as well. There are alot of 88 year old patients who are extremely healthy, have a better mental state than those many generations younger and heal very quickly. If the patient is a compromised frail 88 year old wound healing and recovery would be longer.

No exact answer: First, no presence of medical conditions, if any were mentioned. Secondly, no mention of infection, which tooth, easy or difficult extraction, etc. Basically, we have very little information to go on. Finally, what is meant by "healing"? Older individuals do tend to heal more slowly, but everything else being equal, there is no major difference in healing time. A few days to a few weeks?

Healing: Depends on age, intensity of the dental infection, length of time infection was present, degree of difficulty of the surgery, overall general health, and so many other factors. You will get the best answer to your question from the General Dentist or specialist Oral Surgeon that accomplishes the surgery, that's the person most familiar with the 88 year old's circumstances.