When the provisional is seated, the convex pontics press the used-to-be-flat gingiva (Fig.9 arrows).  In fact the photos of Fig.8-10 are taken ~3 weeks later.

2 Implants for 4 Incisors Last Next

Xin Wei, DDS, PhD, MS 1st edition 07/31/2018, last revision 08/01/2018