Kitchen shears should always be handled with the blades pointed away from your fingers. Avoid testing the serrated sections with your hand, and don't allow children to handle them unsupervised.
If the scissors have become damaged, loose, or misaligned, they should be repaired or replaced rather than forced through tough foods.
The Bottom Line
Those strange metal “teeth” aren't usually decorative. On many kitchen shears, the serrated sections are there to increase grip and keep slippery food from sliding while you're cutting.
They can make tasks such as trimming meat, cutting poultry, snipping herbs, and handling slippery ingredients easier and safer.
So the next time you see those little metal ridges between the blades, don't assume they're a manufacturing mistake. They're one of the small design features that can turn an ordinary-looking pair of scissors into a surprisingly versatile kitchen tool.