Table 5.
The reasons students did not use DDs
| Never used in restorative procedures, N (%) | Never used in endodontic treatment, N (%) | |||||||
| Total (N=145) | CQMU (N=39) | CQTGMC (N=106) | P value | Total (N=141) | CQMU (N=46) | CQTGMC (N=95) | P value | |
| DDs are considered to have disadvantages (such as time-consuming, inconvenient, etc) | 33 (22.8) | 8 (20.5) | 25 (23.6) | 0.696C | 38 (27.0) | 14 (30.4) | 24 (25.3) | 0.516C |
| I lack knowledge and experience | 100 (69.0) | 23 (59.0) | 77 (72.6) | 0.115C | 103 (73.0) | 33 (71.7) | 70 (73.7) | 0.807C |
| I do not think they are necessary | 38 (26.2) | 4 (10.3) | 34 (32.1) | 0.008*C | 18 (12.8) | 4 (8.7) | 14 (14.7) | 0.314C |
| DDs are not provided by internship institutions | 42 (29.0) | 3 (7.7) | 39 (36.8) | 0.001*C | 42 (29.8) | 3 (6.5) | 39 (41.1) | 0.000*C |
| Patients were unwilling or refused to use DDs | 27 (18.6) | 7 (17.9) | 20 (18.9) | 0.900C | 26 (18.4) | 10 (21.7) | 16 (16.8) | 0.482C |
| Other reasons | 4 (2.8) | 1 (2.6) | 3 (2.8) | 1.000F | 4 (2.8) | 1 (2.2) | 3 (3.2) | 1.000F |
*P<0.05.
C, p value from χ2 test; CQMU, Chongqing Medical University; CQTGMC, Chongqing Three Gorges Medical College; DD, dental dam; F, p value from Fisher’s exact test.