YES
laser therapy
Experimental conclusions and results
Variables measured(from T0 to T3) LIIArch length (right)Arch length (left)Arch length (total)ICWIMWOJOB
Randomized(n=40)
Data comparison
Variables measured(from T0 to T3) LIIArch length (right)Arch length (left)Arch length (total)ICWIMWOJOB
data collectionand Data analysis
PG（n=20）
NO
Declined for private reasons
LG（n=20）
Total number of recruited patients
Not eligable
