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. 2016 Dec 7;4:e2765. doi: 10.7717/peerj.2765

Table 4. Descriptive data of teeth treated by location, study center (PI) and study group.

Tooth type Study center Study group
1 2 3 4 5 6 7 8 9 10 Multiple file Single file Total
Mean (SD) N Mean (SD) N Mean (SD) N Mean (SD) N Mean (SD) N Mean (SD) N Mean (SD) N Mean (SD) N Mean (SD) N Mean (SD) N Mean (SD) N Mean (SD) N Mean (SD) N
Maxillary anteriors No. of treated root canals 1.0 0.0 7 1.0 0.0 13 1.0 0.0 11 1.0 0.0 5 1.0 0.0 2 1.0 0.0 7 1.1 0.3 23 1.0 0.0 2 1.0 0.0 2 1.0 0.0 8 3.1 0.5 58 3.0 0.5 80 3.1 0.5 138
Time for treatment per tooth (s) 225.4 145.6 7 139.7 83.1 13 114.2 53.1 11 132.8 77.7 5 169.0 58.0 2 163.6 193.8 7 157.7 200.3 22 50.0 14.1 2 93.0 52.3 2 1500.0 2342.3 8 836.8 747.5 57 375.5 751.8 78 570.3 781.4 135
Time for treatment per root canal (s) 225.4 145.6 7 139.7 83.1 13 114.2 53.1 11 132.8 77.7 5 169.0 58.0 2 163.6 193.8 7 155.0 201.8 22 50.0 14.1 2 93.0 52.3 2 1500.0 2342.3 8 273.1 246.1 57 120.3 204.8 77 185.3 235.0 134
Maxillary premolars No. of treated root canals 1.6 0.5 11 1.4 0.5 17 1.7 0.5 7 2.0 0.0 9 2.0 0.0 5 1.7 0.5 6 1.8 0.4 20 2.0 0.0 2 1.6 0.5 8 1.3 0.5 7 1.7 0.5 53 1.6 0.5 39 1.7 0.5 92
Time for treatment per tooth (s) 276.6 115.0 11 188.1 104.8 17 274.7 116.9 7 150.6 42.6 10 322.2 45.8 5 165.5 84.4 6 299.2 271.9 19 87.5 17.7 2 249.1 150.0 8 950.0 435.0 6 303.0 200.2 53 257.0 326.1 38 283.8 259.6 91
Time for treatment per root canal (s) 180.0 75.0 11 141.6 69.4 17 171.1 105.5 7 74.3 22.4 9 161.1 22.9 5 97.6 31.2 6 162.1 130.8 19 43.8 8.8 2 148.2 70.0 8 710.0 210.1 6 192.5 154.3 52 164.4 197.8 38 180.7 173.5 90
Maxillary molars No. of treated root canals 3.2 0.4 13 2.9 0.4 26 3.1 0.7 11 3.0 0.7 9 3.3 0.5 14 3.1 0.4 8 3.1 0.3 37 2.3 0.6 3 3.2 0.8 6 3.0 0.4 11 1.0 0.0 37 1.1 0.3 43 1.0 0.2 80
Time for treatment per tooth (s) 908.6 1616.5 12 310.7 143.9 26 354.3 162.0 11 207.6 54.4 9 484.9 132.4 14 179.4 182.3 9 503.7 690.3 35 255.0 336.6 2 433.7 205.9 6 2100.0 523.8 11 274.9 229.6 37 294.8 1115.9 42 285.5 824.0 79
Time for treatment per root canal (s) 252.3 397.1 12 109.3 53.2 26 113.0 42.1 11 70.3 17.0 9 151.0 47.5 14 63.7 63.7 8 164.9 226.7 35 86.4 110.2 2 133.7 46.9 6 700.9 141.5 11 274.9 229.6 37 293.4 1116.2 42 284.7 824.2 79
Mandibular anteriors No. of treated root canals 1.0 0.0 1 1.0 0.0 3 1.0 0.0 7 1.0 0.0 3 1.0 0.0 2 1.0 0.0 2 1.1 0.4 14 1.0 0.0 3 1.0 0.0 2 1.0 0.0 2 3.0 0.6 61 3.0 0.6 78 3.0 0.6 139
Time for treatment per tooth (s) 114.0 0.0 1 122.7 76.2 3 113.7 38.4 7 55.0 35.5 3 229.5 113.8 2 50.0 31.1 2 271.1 268.9 14 45.0 5.0 3 172.0 1.4 2 1320.0 1018.2 2 669.7 662.4 62 278.0 324.5 78 451.5 537.6 140
Time for treatment per root canal (s) 114.0 0.0 1 122.7 76.2 3 113.7 38.4 7 55.0 35.5 3 229.5 113.8 2 50.0 31.1 2 249.3 259.6 14 45.0 5.0 3 172.0 1.4 2 1320.0 1018.2 2 219.6 205.0 60 93.6 107.3 77 148.8 169.1 137
Mandibular premolars No. of treated root canals 1.0 0.0 5 1.0 0.0 15 1.0 0.0 6 1.0 0.0 7 1.0 0.0 3 1.0 0.0 13 1.1 0.3 28 1.0 0.0 2 1.0 0.0 6 1.0 0.0 2 1.0 0.2 35 1.0 0.2 52 1.0 0.2 87
Time for treatment per tooth (s) 162.2 101.9 5 104.9 74.0 15 162.8 65.2 6 99.3 55.8 7 327.0 96.0 3 122.5 128.2 13 196.8 294.5 28 75.0 21.2 2 204.2 149.4 6 810.0 466.7 2 260.9 250.0 35 115.5 173.9 52 174.0 218.6 87
Time for treatment per root canal (s) 162.2 101.9 5 104.9 74.0 15 162.8 65.2 6 99.3 55.8 7 327.0 96.0 3 122.5 128.2 13 162.7 188.8 27 75.0 21.2 2 204.2 149.4 6 810.0 466.7 2 237.7 156.6 34 114.2 174.4 52 163.0 177.4 86
Mandibular molars No. of treated root canals 3.0 0.0 19 2.8 0.5 25 2.7 0.7 10 2.8 0.8 11 3.2 0.5 28 2.9 0.9 9 3.3 0.5 20 2.8 0.4 6 2.7 0.6 3 3.3 0.5 8 1.1 0.3 16 1.0 0.2 23 1.1 0.2 39
Time for treatment per tooth (s) 378.8 195.7 19 274.6 166.3 27 247.9 92.2 10 198.4 48.5 11 426.3 169.0 28 295.4 193.0 9 592.9 822.7 19 153.2 63.0 6 277.0 23.5 3 2040.0 521.1 8 276.1 239.8 16 195.6 421.0 23 228.6 356.2 39
Time for treatment per root canal (s) 126.3 65.2 19 98.6 57.3 25 96.6 42.4 10 71.8 13.1 11 135.3 53.1 28 93.7 53.8 9 181.9 263.5 19 53.9 22.2 5 108.6 33.4 3 635.6 168.4 8 259.2 229.2 16 194.1 421.5 23 220.8 353.1 39
Totals No. of treated root canals 2.3 1.0 56 2.0 1.0 99 1.9 1.0 52 2.1 1.0 44 2.8 0.9 54 1.8 1.0 45 2.0 1.0 142 1.9 0.9 18 1.9 1.0 27 2.1 1.1 38 2.1 1.0 260 2.1 1.0 315 2.1 1.0 575
Time for treatment per tooth (s) 429.9 788.1 55 222.2 148.5 101 217.8 134.9 52 157.3 68.9 45 409.5 160.7 54 176.2 164.8 46 345.7 524.3 137 117.0 114.5 17 266.0 170.6 27 1658.9 1218.4 37 496.2 555.8 260 268.9 607.3 311 372.4 594.8 571
Time for treatment per root canal (s) 180.2 200.7 55 115.9 66.0 99 123.8 61.7 52 82.2 41.3 44 157.1 69.2 54 106.1 109.7 45 173.5 211.9 136 57.2 34.8 16 150.7 86.3 27 900.4 1114.8 37 238.9 206.2 256 147.1 453.5 309 188.7 365.5 565