Is LeFort safe?

Is LeFort safe? Overall, the LeFort 1 osteotomy is a common, predictable, and safe orthognathic intervention with reliable long-term results. What causes relapse after jaw surgery? 1- Dental relapse, when there is a change in the position of the teeth after surgery — this type of recurrence is the most Read more…

How many flags has Portugal had?

How many flags has Portugal had? Portugal is a rare case of vexilological and heraldic stability: since independence in 1143, it had only 14 different flags (counting as different flags also differences in the coat of arms), and merely 5 different patterns (square white with blue cross, either solid or Read more…

What is bidirectional flow control?

What is bidirectional flow control? Flow control valve using non compensated throttling. The flow is reduced in both directions, turning the screw or wheel right or left. What is bidirectional control valve? Description: A solenoid-operated, electrically-variable, pressure-compensated, spool-type, normally closed when de-energized, proportional, bi-directional, flow control valve. An internal compensator Read more…