Abstract: An isolating device for an intra-oral imager includes a body which is configured to receive the intra-oral imaging device such that the isolating device is positioned about the imaging optics of the intra-oral imaging device. The body includes a pair of lateral isolating wings that provide a tooth receiving space into which is positionable a tooth surface to be imaged by the intra-oral imaging device with the isolating wings extending along opposite sides of the dental arch. The isolating wings isolate the tooth surface disposed within the tooth receiving space from adjacent oral anatomy and further provide stabilization to the intra-oral imaging device during imaging of the tooth surface.