24 September 2020: Clinical Research
Evaluation of the Relationship Between Maxillary Sinus Wall and Maxillary Canines and Posterior Teeth Using Cone-Beam Computed Tomography
Yifei Qin 1ABCDEF , Guang Shu 1AB , Tianmin Xu 2ADEG*DOI: 10.12659/MSM.925384
Med Sci Monit 2020; 26:e925384
Table 3 Contact ratios and contact distances (mm) of the 4 root surfaces of the maxillary canines and posterior teeth by age and sex.
| Mesial root surface | Distal root surface | Buccal root surface | Palatal root surface | |||||
|---|---|---|---|---|---|---|---|---|
| n (%) | Mean (SD) | n (%) | Mean (SD) | n (%) | Mean (SD) | n (%) | Mean (SD) | |
| Canine | ||||||||
| 10–19 | 2 (0.8%) | −2.2 (0.0) | 44 (17.0%) | −2.2 (1.6) | 4 (1.5%) | −1.8 (0.9) | 27 (10.4%) | −3.0 (1.4) |
| 20–29 | 1 (0.4%) | −2.3 (−) | 29 (11.9%) | −1.8 (0.6) | 2 (0.8%) | −0.8 (0.4) | 15 (6.1%) | −1.9 (1.3) |
| 30–47 | 0 (0%) | – | 12 (9.7%) | −3.2 (2.0) | 1 (0.8%) | −4.0 (−) | 5 (4.0%) | −3.8 (2.1) |
| – | – | 0.081 | 0.112 | – | – | 0.112 | 0.977 | |
| Female | 1 (0.2%) | −2.3 (−) | 49 (12.1%) | −1.9 (0.8) | 4 (1.0%) | −1.7 (1.6) | 20 (5.0%) | −2.3 (1.6) |
| Male | 2 (0.9%) | −2.2 (0.0) | 36 (16.1%) | −2.7 (2.0) | 3 (1.3%) | −2.0 (1.0) | 27 (12.1%) | −3.0 (1.6) |
| – | – | 0.361 | 0.004 | – | – | 0.008 | 0.139 | |
| 1PM | ||||||||
| 10–19 | 11 (4.2%) | −1.0 (0.7) | 52 (19.7%) | −2.2 (1.4) | 10 (3.8%) | −1.0 (0.6) | 46 (17.4%) | −2.2 (1.1) |
| 20–29 | 4 (1.6%) | −0.6 (0.3) | 38 (15.6%) | −1.2 (0.7) | 3 (1.2%) | −0.6 (0.3) | 34 (13.9%) | −1.7 (1.0) |
| 30–47 | 1 (0.8%) | −0.9 (−) | 9 (0.7%) | −1.3 (0.6) | 1 (0.8%) | −1.6 (−) | 8 (6.3%) | −1.6 (1.2) |
| 0.082 | 0.508 | 0.007 | 0.001 | 0.091 | 0.858 | 0.017 | 0.010 | |
| Female | 7 (1.7%) | −0.9 (0.7) | 56 (13.7%) | −1.6 (1.1) | 6 (1.4%) | −1.0 (0.7) | 48 (11.7%) | −2.0 (1.2) |
| Male | 9 (4.0%) | −0.8 (0.6) | 43 (19.2%) | −2.0 (1.3) | 8 (3.6%) | −1.0 (0.5) | 40 (17.9%) | −1.9 (0.9) |
| 0.269 | 0.621 | 0.319 | 0.381 | 0.285 | 0.995 | 0.169 | 0.171 | |
| 2PM | ||||||||
| 10–19 | 34 (12.9%) | −2.0 (1.6) | 144 (54.5%) | −2.7 (2.0) | 45 (17.0%) | −2.1 (1.4) | 103 (39.0%) | −2.3 (1.4) |
| 20–29 | 29 (11.2%) | −1.3 (0.9) | 121 (49.6%) | −2.7 (1.4) | 38 (15.6%) | −1.6 (1.2) | 103 (42.2%) | −1.7 (1.0) |
| 30–47 | 5 (4.0%) | −1.7 (1.3) | 47 (37.3%) | −2.1 (1.4) | 3 (2.4%) | −1.4 (0.7) | 30 (23.8%) | −1.4 (0.9) |
| 0.087 | 0.105 | 0.015 | 0.072 | 0.003 | 0.064 | 0.084 | 0.000 | |
| Female | 33 (8.0%) | −1.6 (1.5) | 185 (45.1%) | −2.6 (1.6) | 45 (11.0%) | −1.9 (1.4) | 137 (33.4%) | −1.9 (1.2) |
| Male | 35 (15.6%) | −1.7 (1.3) | 127 (56.7%) | −2.6 (1.9) | 41 (18.3%) | −1.8 (1.2) | 99 (44.2%) | −2.0 (1.2) |
| 0.021 | 0.924 | 0.038 | 0.954 | 0.111 | 0.339 | 0.033 | 60.637 | |
| 1M MB | ||||||||
| 10–19 | 173 (65.5%) | −2.8 (1.9) | 105 (39.8%) | −1.5 (1.1) | 94 (35.6%) | −1.9 (1.4) | 207 (78.4%) | −2.6 (1.8) |
| 20–29 | 118 (48.4%) | −2.1 (1.3) | 71 (29.1%) | −1.3 (0.9) | 53 (21.7%) | −1.2 (1.3) | 160 (65.6%) | −2.3 (1.3) |
| 30–47 | 37 (29.4%) | −2.2 (1.3) | 27 (21.4%) | −1.4 (1.1) | 9 (7.1%) | −1.2 (0.4) | 61 (48.4%) | −2.3 (1.7) |
| 0.000 | 0.005 | 0.001 | 0.255 | 0.000 | 0.023 | 0.000 | 0.16 | |
| Female | 192 (46.8%) | −2.4 (1.5) | 116 (28.3%) | −1.4 (1.0) | 87 (21.2%) | −1.5 (1.3) | 260 (63.4%) | −2.3 (1.5) |
| Male | 136 (60.7%) | −2.6 (1.8) | 87 (38.9%) | −1.4 (1.1) | 69 (30.8%) | −1.8 (1.4) | 168 (75.0%) | −2.7 (1.7) |
| 0.092 | 0.978 | 0.079 | 0.935 | 0.349 | 0.444 | 0.106 | 0.027 | |
| 1M DB | ||||||||
| 10–19 | 125 (47.3%) | −2.1 (1.5) | 93 (35.2%) | −1.3 (0.9) | 98 (37.1%) | −2.2 (1.4) | 195 (73.9%) | −2.6 (1.7) |
| 20–29 | 75 (30.7%) | −1.4 (1.2) | 76 (31.1%) | −1.3 (0.8) | 42 (17.2%) | −1.4 (0.9) | 155 (63.5%) | −2.3 (1.4) |
| 30–47 | 27 (21.4%) | −1.4 (0.9) | 18 (14.3%) | −1.2 (0.8) | 9 (7.1%) | −1.1 (0.7) | 53 (42.1%) | −2.3 (1.5) |
| 0.000 | 0.001 | 0.001 | 0.701 | 0.000 | 0.000 | 0.000 | 0.151 | |
| Female | 129 (31.5%) | −2.4 (1.5) | 108 (26.3%) | −1.4 (1.0) | 77 (18.8%) | −1.5 (1.3) | 258 (62.9%) | −2.3 (1.5) |
| Male | 98 (43.8%) | −2.6 (1.8) | 79 (35.3%) | −1.4 (1.1) | 72 (32.1%) | −1.8 (1.4) | 145 (64.7%) | −2.7 (1.7) |
| 0.086 | 0.75 | 0.183 | 0.66 | 0.067 | 0.346 | 0.262 | 0.017 | |
| 1M P | ||||||||
| 10–19 | 183 (69.3%) | −3.6 (2.1) | 127 (48.1%) | −2.7 (1.7) | 218 (82.6%) | −3.7 (2.0) | 42 (15.9%) | −1.8 (1.3) |
| 20–29 | 147 (60.2%) | −2.7 (1.5) | 124 (50.8%) | −2.4 (1.5) | 177 (72.5%) | −3.4 (1.7) | 15 (6.1%) | −1.9 (1.9) |
| 30–47 | 46 (36.5%) | −2.9 (1.7) | 43 (34.1%) | −2.5 (1.5) | 69 (54.8%) | −3.4 (2.2) | 12 (9.5%) | −2.5 (1.4) |
| 0.000 | 0.001 | 0.062 | 0.736 | 0.000 | 0.263 | 0.011 | 0.342 | |
| Female | 231 (56.3%) | −3.0 (1.7) | 183 (44.6%) | −2.4 (1.5) | 294 (71.7%) | −3.4 (1.8) | 44 (10.7%) | −2.2 (1.5) |
| Male | 145 (64.7%) | −3.4 (2.1) | 111 (49.6%) | −2.9 (1.8) | 170 (75.9%) | −3.9 (2.1) | 25 (11.2%) | −1.5 (1.1) |
| 0.558 | 0.121 | 0.509 | 0.005 | 0.784 | 0.015 | 0.578 | 0.109 | |
| 2M | ||||||||
| 10–19 | 202 (76.5%) | −2.9 (1.5) | 48 (19.7%) | −2.7 (1.7) | 180 (68.2%) | −2.7 (1.7) | 80 (30.3%) | −1.8 (1.2) |
| 20–29 | 176 (72.1%) | −2.7 (1.4) | 94 (38.5%) | −1.9 (1.2) | 75 (64.3%) | −2.3 (1.5) | 43 (42.2%) | −1.6 (1.1) |
| 30–47 | 73 (57.9%) | −2.6 (1.6) | 38 (30.2%) | −1.9 (1.3) | 56 (44.4%) | −2.3 (1.5) | 43 (34.1%) | −1.6 (1.4) |
| 0.001 | 0.17 | 0.000 | 0.042 | 0.000 | 0.277 | 0.104 | 0.162 | |
| Female | 286 (69.8%) | −2.6 (1.3) | 108 (26.3%) | −1.8 (1.2) | 247 (60.2%) | −2.2 (1.6) | 141 (34.4%) | −1.6 (1.1) |
| Male | 165 (73.7%) | −3.0 (1.7) | 72 (32.1%) | −2.4 (1.7) | 146 (65.2%) | −2.8 (1.6) | 85 (37.9%) | −1.7 (1.4) |
| 0.883 | 0.012 | 0.012 | 0.038 | 0.865 | 0.002 | 0.199 | 0.625 | |
| SD – standard deviation; 1PM – the first premolars; 2PM – the second premolars; 1M MB – the first molar mesiobuccal roots; 1M DB – the first molar distobuccal roots; 1M P – the first molar palatal roots; 2M – the second molars. | ||||||||