发明授权
US4445863A Artificial teeth 失效
人造牙

Artificial teeth
摘要:
An artificial posterior denture tooth comprising a body shaped to conform generally to the shape of a natural posterior tooth and formed of a plurality of resin materials varying in hardness, wear resistance and strength. The various resins are selectively distributed throughout the body of the tooth to produce an uneven wear pattern consistent with expected changes in the patient's stomatognathic system.
信息查询
0/0