US Patent No. 9,616,003 B2; Hakki Sema, Konya, Turkey, has patented an antibacterial mouthwash that contains a boric acid solution made from a stock solution prepared with pure boric acid and distilled water. The pH of the boric acid solution is 4.9 and the antibacterial mouthwash does not reduce cell viability as measured by in vitro cell culture with gingiva and periodontal ligament cells....