2006-07-10 21:34:46 · 6 answers · asked by double v 5 in Health ➔ Other - Health
The cavity produces a softer area in the tooth. The dentist has to remove this part because it is rotted.
2006-07-10 22:52:47 · answer #1 · answered by Buzz s 6 · 2⤊ 0⤋
For the same reason you want to clean something before you glue it. The tooth being filled my be clean and "prepared" so the filling can adhere to the tooth properly. The drilling "cleans" away the debris, dirt, etc. from the area leaving a clean surface for the filling material to properly bond to.
2006-07-11 01:19:25 · answer #2 · answered by Jenny A 6 · 0⤊ 0⤋
since the cavity isnt a perfect circle or 'slot' the dentist has to drill it out so that it is and the filling fits and stays in place.
2006-07-10 21:40:45 · answer #3 · answered by to whom it may confide 3 · 0⤊ 0⤋
Basically, Jenny is right. Also, the dentist has to get rid of the rotting and decaying bone so that is doesn't keep rotting underneath the new filling.
2006-07-11 12:48:15 · answer #4 · answered by Anonymous · 0⤊ 0⤋
i believe the dentist is removing the rooted part of your tooth so he can bond to healthier material, that way it the cavity wont continue
2006-07-10 21:45:09 · answer #5 · answered by slyman202 2 · 0⤊ 0⤋
They have to make sure all the bad part of the tooth is removed so it does'nt get worse.
2006-07-14 19:59:28 · answer #6 · answered by Troy 5 · 0⤊ 0⤋