Table 1 Comparing image rankings of Year 1 and Year 5 students.

From: The perceptions of preclinical and clinical dental students to altered smile aesthetics

 

Median (Interquartile range)

p value

95% CI

 

Year 1 (preclinical)

Year 5 (clinical)

Image A (a missing tooth)

5.0 (3.5, 6.0)

5.0 (3.0, 7.0)

0.9

(−1.0 to 1.0)

Image B (crowded teeth)

10.0 (8.0, 11.0)

10.0 (9.0, 12.0)

0.5

(−1.0 to 0.0)

Image C (a deep overbite)

7.0 (5.0, 9.0)

7.0 (6.0, 9.0)

0.55

(−1.0 to 1.0)

Image D (discoloured teeth)

5.5 (3.0, 9.0)

4.0 (2.0, 6.0)

0.02

(0.0 to 3.0)

Image E (low upper gingival margin)

6.0 (4.0, 8.0)

6.0 (4.0, 7.0)

0.31

(0.0 to 1.0)

Image F (a shifted maxillary midline)

3.5 (2.0, 5.0)

4.0 (3.0, 6.0)

0.26

(−1.0 to 0.0)

Image G (a midline diastema)

9.0 (7.0, 10.0)

11.0 (10.0, 12.0)

p < 0.001

(−3.0 to −1.0)

Image H (the original image)

1.0 (1.0, 2.0)

1.0 (1.0, 1.0)

p < 0.001

(0.0 to 0.0)

Image I (proclined incisors)

6.0 (3.0, 8.0)

8.0 (4.5, 9.0)

0.02

(−2.0 to 0.0)

Image J (retroclined incisors)

9.0 (8.0, 11.0)

7.0 (5.0, 9.0)

p < 0.001

(1.0 to 3.0)

Image K (spaced teeth)

4.0 (3.0, 5.8)

5.0 (3.0, 7.0)

0.03

(−2.0 to 0.0)

Image L (an anterior open bite)

12.0 (11.0, 12.0)

11.0 (10.5, 12.0)

0.02

(0.0 to 1.0)