Study cast analysis
Alginate impressions and wax bite indexes in maximum intercuspal position were taken at time points The linear measurements are shown in Landmarks for the dental cast analysis. U1, U4, L1, L4: the distance between the distobuccal cusp of the first permanent molar and the highest point of the canine in the same quadrant. U2, U3, L2, L3: the distance between the highest point of the canine and the most mesial point of the central incisor in the same quadrant. U5, U6, L5, L6: the distance between the distobuccal cusp of the first permanent molar and the most mesial point of the central incisor in the same quadrant. U7, L7: the distance between the highest points of canines. U8, L8: the distance between the distobuccal cusps of the first permanent molars. U9, L9: the shortest distance between the palatal or lingual surfaces of the first permanent molars.All scanning and measuring were performed by one of the authors (M.H.). Twenty dental casts were measured twice at 2-week intervals to calculate the error of the method using interclass correlation coefficient (ICC).