520
If not , the gap distance varies continuously with changes of the angle , therefore , the amount of correction angle should be readjusted everyday to maintain 1 mm / day of distraction rate on the concave side of the corticotomy .
 None
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Anatomy 
Text: {0} 
Answer:
 None