Finding Out Where You Stand Before Anyone Quotes You
You’ve been told there isn’t enough bone for an implant, or you’re afraid you’ll hear it. That worry is reasonable, since bone under a missing tooth does shrink and it starts fast. What it doesn’t do is settle the question. Plenty of people told no somewhere else turn out to be candidates once someone scans the site properly. You’ll come away knowing how much bone an implant needs. You’ll also see how much yours has likely changed, and what the options are.
Dr. Elaine Wu, DMD holds Boston University’s Excellence in Implantology Award, for proficiency in implant planning, placement and restoration. She also completed the Kois Center program. That runs over years rather than a single weekend, and its method is to gather the whole diagnostic picture before forming an opinion. On a bone loss case that’s the difference between a maybe and a measurement. It happens before anyone discusses dental implants at ReNEW Dental, and that evaluation is the whole appointment. Guessing costs you a failed implant a year or two down the line. Measuring costs you one scan.
How Much Bone Does A Dental Implant Actually Need?
An implant needs bone in two directions, and most people only think about one. Height matters because the post has to clear the nerve canal below and the sinus floor above. Width matters just as much. Bone has to surround the post on every side, not merely sit under it. A ridge can be tall and still be far too thin to hold anything at all. Thresholds also vary by implant system, so no single number covers every case.
Those two measurements are why a flat answer is impossible over the phone. The same amount of loss rules out one site and leaves another workable. Direction and location decide it. Upper back teeth sit under the sinus and behave differently from lower front teeth. Results vary by site as much as by patient, which is why a phone estimate helps nobody.
How Fast Does Bone Disappear After A Tooth Comes Out?
Faster than almost anyone expects, and mostly in the first few months. One systematic review found ridge width dropped 29 to 63 percent within six months of an unassisted extraction. Ridge height dropped 11 to 22 percent over the same period. Another review put the average horizontal loss at 3.87 millimeters against 1.67 millimeters vertically.
Sources: Tan et al., systematic review of post-extraction dimensional changes, 2012. Van der Weijden et al., systematic review of alveolar bone dimensional changes.
Two-thirds of that happens inside the first three months. After the first year it slows to a trickle rather than stopping. The tooth you lost twenty years ago and the one you lost last spring are different problems. The width figure matters most and gets discussed least. Width is what fails quietly, because nothing looks wrong until a post has nowhere to sit.
