Table 1 Measurements of pH were performed with a pHmeter (Mettler Toledo FiveEasy PlusTM Series, Greifensee, Switzerland, Accuracy 0.01 pH unit) calibrated before each measurement with known solutions of pH 4 and 7
Time (hour) | Solution | pH |
|---|---|---|
T (0) | 2% lidocaine with 1:200,000 epinephrine | 3.41 |
T (0) | 4.2% sodium bicarbonate | 7.84 |
T (0) | 2% lidocaine with 1:200,000 epinephrine (10 mL) and 4.2% sodium bicarbonate (2 mL) | 7.10 |
T (1) | 2% lidocaine with 1:200,000 epinephrine (10 mL) and 4.2% sodium bicarbonate (2 mL) | 7.10 |
T (2) | 2% lidocaine with 1:200,000 epinephrine (10 mL) and 4.2% sodium bicarbonate (2 mL) | 7.12 |
T (3) | 2% lidocaine with 1:200,000 epinephrine (10 mL) and 4.2% sodium bicarbonate (2 mL) | 7.12 |
T (4) | 2% lidocaine with 1:200,000 epinephrine (10 mL) and 4.2% sodium bicarbonate (2 mL) | 7.08 |
T (5) | 2% lidocaine with 1:200,000 epinephrine (10 mL) and 4.2% sodium bicarbonate (2 mL) | 7.14 |
T (6) | 2% lidocaine with 1:200,000 epinephrine (10 mL) and 4.2% sodium bicarbonate (2 mL) | 7.08 |
T (7) | 2% lidocaine with 1:200,000 epinephrine (10 mL) and 4.2% sodium bicarbonate (2 mL) | 7.05 |
T (8) | 2% lidocaine with 1:200,000 epinephrine (10 mL) and 4.2% sodium bicarbonate (2 mL) | 7.06 |
T (9) | 2% lidocaine with 1:200,000 epinephrine (10 mL) and 4.2% sodium bicarbonate (2 mL) | 7.06 |
T (10) | 2% lidocaine with 1:200,000 epinephrine (10 mL) and 4.2% sodium bicarbonate (2 mL) | 7.04 |
T (11) | 2% lidocaine with 1:200,000 epinephrine (10 mL) and 4.2% sodium bicarbonate (2 mL) | 7.06 |
T (12) | 2% lidocaine with 1:200,000 epinephrine (10 mL) and 4.2% sodium bicarbonate (2 mL) | 7.10 |
T (24) | 2% lidocaine with 1:200,000 epinephrine (10 mL) and 4.2% sodium bicarbonate (2 mL) | 7.08 |