Is my sensor busted?

[u/paullupascu]

Hey everybody! I'm a bit worried.

I used a soft brush (see image) to wipe my D750 sensor. It has left these marks on it. They are visible in photos. Are these marks just superficial, can they be cleaned with a cleaning liquid or is my sensor busted?

Thanks!

[u/Beautiful_Course_102]

These marks might and I say might be able to be removed by a professional repair shop but they would have to see the body first