My friend said she had temporary cement in her 4 units bridge ( near upper molar area ) for many years. is that advisable. any issues.?

It depends: If it is a permanent bridge on natural teeth, it could be a problem if the cement washes out, which leaves the potential for recurrent decay. If it is a temporary cement on a bridge with implants, this is quite common and merely needs routine monitoring by the dentist. She should discuss this issue with the dentist who placed it, or see another dentist for a 2nd opinion if there is still concern.

No problem: I have cemented many bridges in with temporary cement over the years. If there is ever a problem(chipped porcelain, etc), the bridge can be removed, and sent to the lab for repair. Once on with permanent cement, they cannot be removed without destroying the bridge.

Not good: Sometimes i hear of this. There is a tremendous risk for cement wash out and recurrent decay. There is a reason this is called temporary. She should see the dentist and find out about getting it removed (usually tapped off) carefully, preserving it. Then the support teeth (abutments) can be checked for decay and breakdown. If all is still good, then it can be recemented with final cement.

Bad Idea!!: You should not stay with temporary cement more then what your dentist says .Usually just on or two months.

No issues: If there is a tight secure fit and the crowns fit very well then this will not result in any significant issues.

Not really: Ideally, bridges on natural teeth should be cemented with permanent cement. This would avoid it form coming loose and it's consequences.

Many years: Temporary cement can last many years as long as there is no cement wash out and no signs of recurrent caries.

Not advisable: Temporary cements are meant for temporary use (hence the name temporary!). The cement can partially or fully "wash out" from under the bridge allowing saliva, debris and bacteria to enter under the crowns. This can result in the teeth decaying and perhaps even being lost due to excessive decay!

No: As long as the bridge is staying in and is stable the cement doesn't really matter. If the bridge should come off and she has no other symptoms, a more longer lasting cement can be used to recement the bridge.

Not advisable: Not advisable as temporary washes out over time allowing bacteria to get under bridge. Could lead to decay. Has she hadit checked by a dentist regularly?

No.: Temporary cements eventually leak at the margins (edges) of the abutments allowing teeth to decay and even break off at the gumline. If it's not too late, get it serviced, cleaned and re cemented with a strong cement.

On teeth?: Dental fixed bridges on natural teeth are usually cemented with permanent cement.