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我科在用普通帽状无缝冠制作前牙开面冠或固定桥的固位体时,经常遇到下列问题:桥基牙(后牙或前牙)的冠部过长,普通帽状无缝冠高度不足;用普通帽状无缝冠锤制前牙时形成皱褶或出现折裂;制作上颌双尖牙时也常在邻(牙合)面角出现皱褶等。因而给修复工作带来一定困难。虽然目前有半成品切牙、尖牙无缝冠,但其形态及规格还满足不了临床上的需要,且价格较贵(前牙无缝冠每个0.352元,帽状无缝冠每
Our department in the use of ordinary cap-like seamless crown crowns for the production of open crowns or fixed bridge retainer, often encounter the following problems: The bridge abutment (posterior teeth or anterior teeth) crown too long, common cap Seamless crown height is not enough; common cap-shaped seamless crown hammer when the formation of wrinkles or front teeth fold; the production of the maxillary bicuspid often adjacent to (occlusal) face corner wrinkles and so on. Thus bringing some difficulties to the restoration work. Although there are semi-finished incisors, canines seamless crown, but its shape and size also can not meet the clinical needs, and the price is more expensive (anterior teeth seamless crown each 0.352 yuan, cap-like seamless crown