@lain
Took me nearly a year from tooth extraction to implant completion. Kept coming in and them telling me, "No, not healed enough for the next step yet. Come back in 2 [months/weeks] and we'll check again."
Though, to be fair, it was a 3-tooth extraction all at once, and as soon as it was finished I was warned that "We normally don't have to use so much force. You're going to be in a lot of pain."