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  • Title: Effect of Sodium Lauryl Sulfate (SLS) on Primary Human Gingival Fibroblasts in an In Vitro Wound Healing Model.
    Author: Chuang AH, Bordlemay J, Goodin JL, McPherson JC.
    Journal: Mil Med; 2019 Mar 01; 184(Suppl 1):97-101. PubMed ID: 30901402.
    Abstract:
    OBJECTIVES: Sodium lauryl sulfate (SLS) is a surfactant used to decrease the surface tension of water. Most commercially available dentifrices contain 0.5-2.0% SLS. This study investigated the potential effect of SLS on oral wound healing using primary human gingival fibroblasts (HGFs). METHODS: HGFs cells were grown in12-well culture plates in DMEM medium. A 3 mm wound was created on confluent HGFs. The cells were challenged with 0 (the control group), 0.01, 0.02, 0.03, 0.04, or 0.05% SLS-containing media once daily for 2 minutes. The cells were stained on day 0, 2, 4, 6 and 8. The percent of wound fill area was measured. RESULTS: On day 2, 4, 6, and 8, the wound fill of the control group (0% SLS) was 15, 35, 67 and 98%, respectively; at 0.01% SLS, it was 10, 20, 65 and 84%; at 0.02%, it was 7, 10, 15 and 25%; at 0.03% SLS, it was only 5% and 8% on day 2 and 4. CONCLUSION: Our results showed a dose- and time-dependent inhibition on HGFs wound fill by SLS; however, future in vivo studies are needed to validate if our in vitro findings using SLS-free dentifrices to avoid the potential delay of wound healing.
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