The hypothesis is that antibacterial photodynamic therapy improves tissue health by reducing inflammation without any side effect.~Study participants will be invited from a dental clinic in Tampere, Finland, from the patients of an oral hygienist's office. Participants will be randomized to the treatment and control groups using the closed envelope method. Participants in the treatment group will receive Lumoral® treatment according to the manufacturer's protocol, once daily for 10 min for 15 days and then twice daily for 15 days.
The aim of this study is to determine the effect of regular antibacterial photodynamic Lumoral® treatment on gingival health and plaque volume, and anti-inflammatory effect of daily double light therapy on implant teeth. The study will use a medical device containing a light-activated Lumorinse® mouthwash and a Lumoral® light activator.