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Table 1 Number of measured elements, mean, and standard deviation of RCR for every tooth

From: Root resorption during orthodontic treatment with Invisalign®: a radiometric study

  1.6 1.4 1.3 1.2 1.1 2.1 2.2 2.3 2.4 2.6
No. of teeth 69 66 67 65 70 69 64 69 65 58
Mean rRCR (%) 100 103 104 104 102 103 100 104 102 101
Standard deviation 13.09 12.47 14.93 11.82 14.15 13.58 15.38 14.55 14.66 13.42
   4.3 4.2 4.1 3.1 3.2 3.3   
No. of teeth    71 71 70 70 68 71   
Mean rRCR (%)    107 102 100 106 104 105   
Standard deviation    13.78 16.5 13.28 13.48 12.27 13.48