Headbutting rules in boxing?

[supacook2k]

After the controversy with the ending of Mayweather V Ortiz fight last week i've been thinking, if a headbutt is intentional which ortiz looked like to me then should a rule be introduced whereby anyone who intentially headbutts gets disqualified rather than get a point taken off. To back the DQ up theres also the possibility of using a tv replay for the ref if he is unsure if it was intentional or not, so should the rule be changed to disqualification? just my thoughts on it but what do you guys think?