WHILE HITTING WITH A HAMMER, THE TOOTH OF BACK-HOE BUCKET, A PIECE OF THE TOOTH CHIPPED OFF AND STRUCK/CUT UPPER ABDOMINAL AREA OF EE. RESULT WAS A CUT SHIRT AND CUT SKIN CAUSING BLEEDING, BUT NO EVIDENCE OF TOOTH PARTICLE REMAINING IN WOUND. THE CUT WAS APPROX 1 1/4"" IN LENGTH. SUPERVISOR TRANSPORTED HIM TO RECEIVE MEDICAL ATTENTION.