The Tooth Next to the Gap Isn't Healthy Enough to Anchor a Bridge
A traditional bridge works by grinding down the two teeth on either side of the gap so they can support a crown that spans across. That only works well if those neighboring teeth are strong, healthy, and free of large fillings or old root canal work. If the teeth next to your gap already have cavities, cracks, or weakened structure, shaving them down to support a bridge adds stress to teeth that are already compromised, and it permanently removes healthy tooth structure that can't be put back. An implant stands on its own in the jawbone, so it doesn't ask anything of the teeth next door, it simply replaces the root that's missing without touching a single healthy tooth. That's a meaningful difference if the teeth flanking your gap are otherwise in good shape.