3M Unitek Gurin Loop Spring, Push or Pull
A loop spring used for individual tooth movement, capable of functioning as either a push spring or a pull spring depending on the correction needed.
The Gurin Loop Spring is a wire auxiliary incorporated into a removable or fixed appliance to move an individual tooth, distinguished from the related Gurin Finger Spring by its looped design, which gives the spring a defined range of flex and recoil suited to either pushing or pulling a tooth depending on how it is oriented and activated.
This dual function versatility lets the clinician use essentially the same auxiliary design whether the treatment plan calls for moving a tooth away from or toward a particular direction, simplifying the range of components a lab or practice needs to stock for individual tooth movement cases. As with other Gurin spring designs, this auxiliary is most often used during interceptive or early treatment when a single tooth or a small number of teeth need correction ahead of or alongside broader arch level mechanics, applying a light, sustained force appropriate to a younger, still developing dentition.
Because the spring is built into a removable or semi-fixed appliance rather than tied into a full fixed bracket system, it suits practices offering interceptive treatment using appliances built specifically around individual tooth corrections. Labs and practices fabricating this type of appliance keep loop springs in stock as a standard auxiliary component.
