A belt has a plurality of spaced apart teeth, at least one tensile cord extending along the belt spaced from the teeth, and a tooth stock material filling the teeth and encapsulating the tensile cord. A reinforcement cord is incorporated into the belt to generally follow along the tensile cord, the reinforcement cord having at least one overlay portion passing over the tensile cord and at least one loop portion extending down into a tooth to connect and secure the tooth to the tensile cord, whereby reinforcing the tooth against a separation from the belt due to shear forces.