BIOLOGICALLY FRIENDLY ORTHODONTIC ALIGNERS
- 专利权人:
- Hui Feng
- 发明人:
- Hui Feng
- 申请号：
- US16676303
- 公开号：
- US20200138548A1
- 申请日:
- 2019.11.06
- 申请国别(地区):
- US
- 年份:
- 2020
- 代理人:
- 摘要：
- Provided herein is a system for tooth repositioning comprising appliances that comprise polymeric shells, where at least one shell of the polymeric shells has an occlusal side opening such that a tooth receiving the at least one shell has its occlusal surface exposed.
- 来源网站：
- 中国工程科技知识中心
