3M Iso-Form Temporary Crown Kit, Tin-Silver
A kit of prefabricated tin-silver temporary crowns that stretch to fit preparation margins, used for short-term restoration of adult posterior teeth.
3M Iso-Form Temporary Crowns are prefabricated crowns made from a tin-silver material, designed to provide short-term restoration of adult posterior teeth while a permanent crown is being fabricated in the laboratory. Featuring accurate anatomy out of the box, these crowns are intended to fit a range of prepared teeth without extensive chairside adjustment, and their tin-silver construction allows them to stretch slightly to seat over the preparation margins, helping achieve a reasonably close marginal fit even without custom fabrication.
This stretch property supports fast placement, which is useful for practices that need to protect a prepared tooth quickly at the end of a crown preparation appointment before the patient leaves. Iso-Form crowns are also described as offering good compatibility with gingival tissues, meaning they are designed to sit against the gum margin without causing excessive irritation during the period the temporary is in place.
General dental practices that prepare crowns chairside and send impressions to an external laboratory for the final restoration typically keep a kit of temporary crowns like this one on hand across a range of sizes, so a suitable temporary is always available regardless of which tooth is being treated that day.
