An increase in salivary flow with amitriptyline may indicate treatment resistance in burning mouth syndrome. (25th March 2018) - Kawasaki, Kaoru; Nagamine, Takahiko; Watanabe, Takeshi; Suga, Takayuki; Tu, Trang T.H.; Sugawara, Shiori; Mikuzuki, Lou; Miura, Anna; Shinohara, Yukiko; Yoshikawa, Tatsuya; Takenoshita, Miho; Toyofuku, Akira