Closed Tray vs. Open Tray Implant Impressions | 合法醫療器材資訊網

Ingeneral,forsingle-unitpartiallyedentulouspatients,closedtrayandopentrayimpressioncopingscanbeusedinterchangeably.However,ifyouhave ...

Impression copings for implant[1] prosthetics generally come in two distinctly different types: closed tray or open tray. (Figure 1)

If you are like most clinicians, using an open tray impression coping may bring a little bit of anxiety with it since you must make sure you can find and access the impression coping screw in order to remove the impression. If you have ever locked an impression in the mouth, you know exactly what I mean! It is for this reason that many clinicians would rather use closed tray impression copings.

Can these different types of impression copings be used interchangeably? The answer depends on the clinical situation. A recent systematic review of the literature by Papaspyridakos et al, can help shed some light on the use of the different implant copings.

In general, for single-unit partially edentulous patients, closed tray and open tray impress...