Show Antip yrino blackens tho teeth it is asserted that tho the internal use of antip yrino blackens tho teeth this peculiarity should be generally known by tho the profession and also among the laity that objections may bo made on this ground to taking it as a remedy tho the blackening is the moro more intense tho the moro more imperfect t the he enamel but may be removed by attrition with dilute acid theaon tho considerable sid me ubo of antip yrino for several years back gives importance to this latter observation southern dental journal |