While sitting, scoot your butt to the front of your chair. Then lean back so that your upper back rests lightly on the seat back. Contract abs and lift your right knee up, then place your foot back down on the floor. Repeat with your left leg, doing 10 reps on each side. Then, sit up straight on the front edge of your chair, engage abs and lean back again to lean upper back against the chair back. Sit up straight again, using your abs.
A Flipper is a false tooth to temporarily take the place of a missing tooth before the permanent bridge is placed. A Flipper can be attached via either a wire or a plastic piece that fits in the roof of your mouth. Flippers are meant to be a temporary solution while awaiting the permanent bridge.
The temporary crown is also important, but for different reasons. The temporary crown is essential for comfort, appearance and to maintain the position of the adjacent teeth for the permanent crown. When a tooth is shaped for a crown, the more sensitive areas of the tooth are usually exposed. The temporary crown acts as a blanket for the tooth, insulating it from hot and cold foods and drinks. The temporary crown is also needed to help maintain the appearance of the tooth while the permanent crown is being made. A trimmed tooth can be unattractive without the temporary, especially if the tooth is near the front of the mouth.