Black Triangles at Mid-point in the Treatment
I'm half way through the Invisalign treatment - main objective being to narrow the gaps in the upper teeth. Had no issue whatsoever with the lower teeth but I do wear the trays on those too. Now, it seems like I have developed a couple black triangles right in the middle and adjacent spot on lower teeth. Will these spaces be taken care by continuing the treatment (through the end)? Is this a negative side effect of the treatment? If so it is really diminishing the whole value of Invisalign.