- 1. Having the property of returning to the original shape after being stretched, compressed, bent, or otherwise distorted. 2. A rubber or plastic band used in orthodontics as either a primary or adjunctive source of force to move teeth. The term is generally modified by an adjective to describe the direction of the force or the location of the terminal connecting points. [G. elastreo, epic form of elauno, drive, push]- vertical e. e. material used in a direction perpendicular to the occlusal plane, connecting one arch wire to the other, and usually used to improve intercuspation.
* * *elas·tic i-'las-tik adj1 a) of a solid capable of recovering size and shape after deformationb) of a liquid capable of resisting compressionc) of a gas capable of indefinite expansion2) capable of being easily stretched or expanded and resuming former shapeelas·ti·cal·ly -ti-k(ə-)lē advelastic n1 a) easily stretched rubber usu. prepared in cords, strings, or bandsb) a band of elastic used esp. in orthodontics also one placed around a tooth at the gumline in effecting its nonsurgical removal2 a) an elastic fabric usu. made of yarns containing rubberb) something made from this fabric
* * *elas·tic (e-lasґtik) [L. elasticus] 1. able to resist and recover from stretching, compression, or distortion applied by a force. Cf. resiliency. 2. a ring-shaped strip that can do this, made of rubber or synthetic material, such as one used in orthodontic therapy. Called also elastic band.
Medical dictionary. 2011.