Table 1. Description of the patient samples.

Variable	Outcome assessment
No. of patients	60
Mean age (range:yr)	19 (10-46)
Sex ratio (male/female)	24/36
Mean follow-up (range:mon)	28 (6-209)
Mean diastema width before orthodontic treatment (range:mm)	1.1 (0.3-3.0)