Hi Main cause of bleeding gums in a healthy individual would be deposits present on teeth as well as below your gums. The treatment of choice in these cases are Scaling to remove the deposits both below and above the gums. When there are huge deposits formed on teeth, they start to move the gums lower than where they are supposed to be and this happens gradually. Because of this gradual shift, you would have not noticed that the gums are at a lower position than where they are supposed to be. Since scaling has removed major part of the calculus, you are seeing the gap between your teeth. The gums will revert back provided the treatment is completed and you maintain proper oral hygiene practices. As far as changing the dentist is concerned, the Dentist has done what exactly had to be done, and you can continue with your dentist.

Hie..unhealthy gums leads to bleeding only.. and after cleaning removal of calculus and bleeding occurs.. which will we fine after a week.. get your sittings completed .. and the gap will be filled up by the healthy gums soon .. don’t worry ..

It was just the calculus which was stuck between the teeth so you can see the gap. If the calculus isn't removed it causes gum diseases like gingivitis and periodontitis. Cleaning machine doesn't cause any tooth cutting so the hole or gap was already there which became visible on removal of dirty calculus. Bleeding is a sign of unhealthy gums. More the bleeding.. More unhealthy are the gums.

Hie ..dear actually ur teeth were filled with plaque that's y u are feeling gap because that plaque is removed now ...don't worry u will feel better after somedays ...