CLAMPS (TISSUE RETRACTORS)
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When operating with clamp:
1) open the clamp for necessary width outside the mouth before placing it on a tooth;
2) avoid high-speed opening;
3) open the clamp for width not more than 1,5 mm exceeding tooth width
(Undue force may cause clamp premature failure because of metal fatigue).
4) fix the clamp with floss to avoid clamp swallowing.
