Document Classification

Section Type: RESULTS

Text: The mean expansion obtained between cusp tips and between cervical-palatal points was, respectively : for inter-canine width, 4. 80 mm and 4. 35 mm with the Haas appliance and 5. 91 mm and 5. 91 mm with the Hyrax appliance ; as for first deciduous molars or first deciduous premolars, the values obtained were 6. 46 mm and 5. 90 mm in the Haas group, and 7. 11 mm and 6. 65 mm in the Hyrax group ; with regard to first molars, values were 6. 11 mm and 5. 24 mm in the Haas group, and 7. 55 mm and 6. 31 mm in the Hyrax group.