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MULTI-TAPER DENTAL ROOT CANAL FILLING POINTS/CONES AND PROCESS OF MAKING SAME
专利权人:
DENTSPLY SIRONA inc.
发明人:
Nathan Y. LI
申请号:
US16445762
公开号:
US20200129269A1
申请日:
2019.06.19
申请国别(地区):
US
年份:
2020
代理人:
摘要:
The present invention provides an improved root canal filling point/cone having a structure that can be manufactured precisely to result in better obturation with less micro-leakage. One aspect of the present invention is directed to a molded root canal filling point having progressively decreasing tapers from the smaller tip end to the larger end. Another aspect of the present invention is directed to a thermo-pressure molding process for manufacturing root canal filling appliances (e.g., Gutta Percha points). A further aspect of the present invention is directed to the structure of the mold for undertaking thermo-injection molding
来源网站:
中国工程科技知识中心
来源网址:
http://www.ckcest.cn/home/

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