Curve of Spee (COS) exaggerating is frequently noted in malocclusions which is dentally. Like exaggerated COS changes the imbalance of muscle, resulting  ultimately to inappropriate functional occlusion. It could be beneficial if we got a thorough learning of significance of COS measuring, so that it can help in our treatment. The goal of this article is to get knowledge relating to the validity and accuracy of 3-shape laser scanner in COS measurement among malocclusion in different types