Table 6 Comparison of different vertical dimensions with respect to smile attractiveness of the full-face images for the orthodontists, prosthodontists and laypersons
Smile variable | R | Normal facial height (1) | Increased facial vertical height (2) | Decreased facial vertical height (3) | Difference p value | |||
|---|---|---|---|---|---|---|---|---|
Mean ± SD | Median (%25–%75) | Mean ± SD | Median (%25-%75) | Mean ± SD | Median (%25–%75) | |||
− 1 mm | O | 51.70 ± 19.21 | 50 (37.50–69.50) | 42.30 ± 21.59 | 41.50 (27.50–52.50) | 57 ± 18.99 | 60 (42.50–70.50) | < 0.001* (2–1; p = 0.022) (2–3; < 0.001) |
P | 62.95 ± 20.39 | 62 (49–79) | 50.12 ± 26.23 | 45.50 (29.50–70) | 60.43 ± 23.88 | 61.50 (44–75) | 0.006* (2–1; p = 0.009) (2–3; p = 0.049) | |
L | 68.47 ± 20.62 | 72.50 (50–85) | 56.57 ± 26.80 | 55 (40–75) | 72.57 ± 22.47 | 75 (65–90) | < 0.001* (2–1; p = 0.011) (2–3; p < 0.001) | |
− 0.5 mm | O | 63.13 ± 17.64 | 61.50 (50–76.50) | 48.83 ± 19.16 | 47.50 (35.50–60.50) | 63.95 ± 22.08 | 65.50 (50–80) | < 0.001* (2–1;p < 0.001) (2–3; p < 0.001) |
P | 65.57 ± 17.74 | 70 (55–78.50) | 55.40 ± 19.56 | 54.50 (43–67.50) | 79.87 ± 21.43 | 72.50 (61–86.50) | < 0.001* (2–1; p = 0.001) (2–3; p < 0.001) | |
L | 76.15 ± 19.69 | 80 (67.50–90) | 56.70 ± 24.33 | 55 (40–72.5) | 79.88 ± 19.17 | 85 (72.50–90) | < 0.001* (2–1; p < 0.001) (2–3; p < 0.001) | |
0 mm | O | 68.87 ± 18 | 70.50 (56.50–80) | 60.18 ± 17.46 | 60 (50–73) | 63.83 ± 19.43 | 65.50 (50–79.50) | 0.039* (1–2; p = 0.014) |
P | 72.40v21.24 | 75 (56.50–90) | 57.28 ± 19.80 | 57.50 (40.50–70) | 72.63 ± 79.64 | 75 (62–88.50) | < 0.001* (2–1; p < 0.001) (2–3; p = 0.001) | |
L | 83.33 ± 15.63 | 87 (75–95) | 59.10 ± 23.39 | 52.50 (45–77.50) | 76.52 ± 16.78 | 79 (70–89) | < 0.001* (2–1; p < 0.001) (2–3; p < 0.001) | |
+ 0.5 mm | O | 65.28 ± 18.80 | 69.50 (50–81.50) | 64.18 ± 20.36 | 68.50 (50–79.50) | 48.68 ± 19.46 | 50 (37–59) | 0.119 |
P | 61.88 ± 20.82 | 65 (42–77) | 54.93 ± 25.12 | 52 (35–74.50) | 57.48 ± 21.33 | 56 (42.50–75) | 0.315 | |
L | 63.53 ± 25.84 | 70 (40–85) | 59.82 ± 22.71 | 57.50 (40–77.50) | 65.40 ± 21.48 | 70 (52.50–80) | 0.001* (3–1; p = 0.030) (3–2; p < 0.001) | |
+ 1 mm | O | 53.70 ± 18.52 | 50 (40–70) | 55.03 ± 22.23 | 51 (40.50–72) | 58.72 ± 20.39 | 57 (46.50–74) | 0.127 |
P | 50.88 ± 18.40 | 50 (39.50–62) | 54.88 ± 26.66 | 50 (32.50–80) | 58.45 ± 27.44 | 60.50 (32.50–81) | 0.200 | |
L | 77.77 ± 20.74 | 80 (72.50–92.50) | 61.27 ± 25.98 | 60 (45–80) | 75.05 ± 21.20 | 80 (67.50–90) | < 0.001* (1–2; p = 0.001) (1–3; p = 0.003) | |