Table 1.

In Vitro Cellular Viability Assay

Treatments	6 h	24 h	48 h	72 h
BSS	100 ± 8.11	100 ± 3.86	100 ± 5.12	100 ± 8.89
Reg P. –Ab	97.6 ± 7.78	93.1 ± 3.72	87.6 ± 4.65	26.6 ± 3.11
Reg_P +Ab	90.5 ± 8.18	88.7 ± 4.14	83.3 ± 5.17	27.6 ± 3.16
Dil_P –Ab	93.5 ± 6.82	88.4 ± 3.76	81.4 ± 5.98	69.9 ± 6.13
Dil_P +Ab	93.2 ± 7.98	85.9 ± 4.16	84.1 ± 6.61	67.7 ± 7.23

Reg P., regular proparacaine (0.5%); Dil. P, diluted proparacaine (0.05%); +Ab treated with antibiotics; −Ab not treated with antibiotics. The cellular proliferation rate was significantly affected in the Reg. P environment, P < 0.001; whereas the Dil. P environment also affected the cellular proliferation rate, P < 0.01, at the 72-h time point.

BSS, balanced salt solution.