| 摘要 |
PCT No. PCT/FR86/00093 Sec. 371 Date Oct. 27, 1986 Sec. 102(e) Date Oct. 27, 1986 PCT Filed Mar. 19, 1986 PCT Pub. No. WO86/05381 PCT Pub. Date Sep. 25, 1986.Ring for the construction of temporary or permanent dental crowns. The ring is constituted by two molded half-shells (1, 2) which carry coupling elements (3, 4; 5, 6) rigidly fastened together in pairs by bonding, welding or any other method of rigid attachment which is capable of ensuring cohesion of the assembly in such a manner as to constitute in combination a shuttering mold for the filling product which is intended to restore the tooth. |
