ISOLATION with 2 step technique: clamp + dam first and frame later.

Another isolation technique places the dam and the clamp at the same time. The dam is held only in the arch of the clamp. Your dentist can use it on second and third upper molars, where if the clamp is placed without a dam, then, it is very complex to be able to wear it. In this way, the active part of the clamp can be perfectly visualized, but the dam is almost in position.