Is it OK that dental implant screw is still exposed on inner side after permanent cap has been placed? -Tooth #19? (Photos)

Hi, it appears that your implant is losing bone on the inside area and that the threads are showing. Unfortunately, this makes your implant very difficult to clean and can lead to increased risk of gum infection. I would suggest you see a specialist (periodontist) for a second opinion.

Your outcome is note textbook ideal but can be functional for many years. It is more difficult to maintain implants with the threads exposed. It may be possible to have a periodontist do a soft tissue graft to cover the exposed threads. Fortuantely it is not in an esthetic area.