A dental post method of installing posts in the roots of spaced apart teeth having non-parallel root canals by first drilling holes in the teeth in alignment with the root canals, placing a dental post in each of the teeth, measuring the angle of the advergents of the dental posts, and installing permanent...http://www.google.fr/patents/US4290755?utm_source=gb-gplus-shareBrevet US4290755 - Dental post and method of installing
