摘要：Earlier reports have demonstrated that prolonged exposure to a gas-chlorinated swimming-pool was associated with enamel erosion, particularly in competitive swimmers (Centerwall et al., 1986). A few additional reports have confirmed these findings (Buczkowska-Radlinska et al., 2012; Gabai et al., 1988; Geursten, 2000). Although the regulation may vary according to each state jurisdiction (as is the case for the US), a frequently recommended chlorine level for a typical swimming pool is between 1.0 to 1.5 mg·L-1. When using cyanic acid (stabilizer) minimum and maximum values are set to respectively 2.0 and 5.0 mg·L-1. The expected pH range for swimming pools is between 7.2 and 8.0. However, if a gas- chlorinated pool becomes inadequately buffered, the pH may decrease rapidly to tooth decalcifying levels as low as 3.
