Department of Dental Medicine,Division of Oral Diseases,Karolinska Institutet,Huddinge,Sweden;
Department of Chemistry-BMC,Uppsala University,Uppsala,Sweden;
Department of Environmental Science&Analytical Chemistry,Division of Analytical Chemistry,Stockholm University,Stockholm,Sweden;
Phototherapy; Antimicrobial Blue Light; Dental Plaque; Gingival Inflammation; Toothbrushing;