Table 4 Number (percentage) of participants reporting any gingival discomfort during the bleaching procedure according to the gingival barrier used (n = 21)
Dental arch | Gingival barriers | p-value* | |||
|---|---|---|---|---|---|
Opaldam | Topdam | Lysdam | Maxdam | ||
Upper | 1/12 8.33% | 0/8 0.00% | 1/8 12.50% | 5/14 35.71% | 0.114 |
Lower | 0/9 0.00% | 0/13 0.00% | 0/13 0.00% | 0/7 0.00% | Not calculated |
Overall | 1/21 4.85% | 0/21 0.00% | 1/21 4.85% | 5/21 23.81% | 0.027 |