第三章单元测试
- Which of the following statements is not true（ ）。
- Extrusion has been programmed into the aligner and the actual amount of extrusion did not reach the expected amount. How can we deal with it?（ ）。
- What aspects should be are analyzed form when finding causes of teeth unfitting（ ）
- The more mobile the lip, the more tooth that can be displayed with the lip at rest to create a pleasing smile. （ ）
- The force of clear aligner is applied at a certain point on the dental crown.（ ）
A:The less mobile the lip, the more tooth display at rest. B:An acceptable central incisor is 10.5-11mm in length, with lateral incisors 1-2.5mm shorter than the centrals, and canines 0.5-1mm longer than the centrals for an esthetic smile display. C:There is a general rule for achieving proportionate smile design that laterals should measure 2/3 of the centrals and canines 4/5 of the laterals. D:The more mobile the lip, the less tooth that can be displayed with the lip at rest.
答案:An acceptable central incisor is 10.5-11mm in length, with lateral incisors 1-2.5mm shorter than the centrals, and canines 0.5-1mm longer than the centrals for an esthetic smile display.
A:Intermaxillary traction B:Extend wear time C:Bite chewing D:Wear the appliance from the last few steps
答案:Extend wear time
A:aligner B:appointment treatment C:digital design D:tooth
答案:aligner###appointment treatment###digital design###tooth
A:对 B:错
答案:错
A:对 B:错
答案:错
