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DENTAL POST DESIGNED FOR IMPROVED CROWN BONDING AND REDUCED ROOT DAMAGE
专利权人:
发明人:
THOMAS E. LAPINSKI,Arthur A. Alfaro
申请号:
US15446288
公开号:
US20170172706A1
申请日:
2017.03.01
申请国别(地区):
US
年份:
2017
代理人:
摘要:
A post for a dental crown is disclosed having improved structural features—including increased post strength and reduced likelihood of root fracture. In one embodiment, the post includes a quadrangle (4-way) split shank for increased compliance and root stress reduction while providing very high mechanical grip strength and pull-out resistance. In another embodiment, a shortened threaded section and a thread-free shank tip minimize the possibility of root fracture while still providing high grip strength and pull-out resistance. Embodiments also include a radiused transition from a primary thread to a secondary thread portion of the shank for stress reduction and axial grooves, cross-axis through holes and other shape features of the post head for increased crown retention strength.
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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