Skip to main content

Table 4 Intra-oral features (Inter-arch characteristics) of malocclusion within gender groups

From: Prevalence of malocclusion and assessment of orthodontic treatment needs among Syrian refugee children and adolescents: a cross-sectional study

Parameters Gender N (%) Total (N = 606)
R   L  
Male (N = 280) Female (N = 326) N % N %
R L R L
Molar relationship 2° first molars not present 8 (3.00) 9 (3.00) 15 (5.00) 14 (4.00) 23 3.80 23 3.80
  Class I 188 (67.0) 192 (69.0) 210 (64.0) 198 (61.0) 398 65.7 390 64.4
  Class II 68 (24.0) 62 (22.0) 78 (24.0) 85 (26.0) 146 24.1 147 24.3
  Class III 16 (6.00) 17 (6.00) 23 (7.00) 29 (9.00) 39 6.4 46 7.6
Canine relationship 2° canines are not present 91 (32.5) 92 (33.0) 98 (30) 103 (31.5) 189 31.2 195 32.2
  Class I 115 (41.0) 119 (42.0) 132 (40.5) 119 (36.5) 247 40.8 238 39.3
  Class II 64 (23.0) 64 (23.0) 85 (26.0) 90 (28.00) 149 24.6 154 25.4
  Class III 10 (4.50) 5 (2.00) 11 (3.50) 14 (4.00) 21 3.5 19 3.1
Crossbite None 223 (79.6) 259 (79.0) 482 79.5%
  Buccal crossbite 52 (18.6) 65 (20.0) 117 19.3%
  Lingual crossbite 5 (1.80) 2 (1.00) 7 1.20%
Mandibular displacement (MD) None 264 (94) 313 (96.0) 577 95.2%
  Anterior MD 8 (3) 6 (2.00) 14 2.30%
  Lateral MD 8 (3) 7 (2.00) 15 2.50%
Discrepancy between the RCP and ICP None 254 (91.0) 287 (88.0) 541 89.3%
   < 1 mm 12 (4.00) 19 (6.0) 31 5.10%
  1–2 mm 11 (4.00) 16 (5.0) 27 4.50%
   > 2 mm 3 (1.00) 4 (1.0) 7 1.20%
Incisors relationship Class I 114 (41.0) 131 (40.0) 245 40.4%
  Class II d1 70 (25.0) 80 (25.0) 150 24.8%
  Class II d 2 56 (20.0) 56 (17.0) 112 18.5%
  Class III 40 (14.0) 59 (18.0) 99 16.3%
Overjet Average 132 (47.0) 147 (45.0) 279 46.0%
  Increased 101 (36.0) 118 (36.0) 219 36.1%
  Reduced 39 (14.0) 54 (17.0) 93 15.3%
  Reversed 8 (3.00) 7 (2.00) 15 2.50%
Overbite Average 93 (33.2) 109 (33.4) 202 33.3%
  Increased 98 (35.0) 91 (28.0) 189 31.2%
  Reduced 74 (26.4) 105 (32.2) 179 29.5%
  AOB 15 (5.40) 21 (6.40) 36 5.90%
  1. R right side, L left side, 2°: permanent; N number of subjects, d 1 division I, d 2 division II, AOB anterior open bite