The news article addresses the popular debate on whether it's right or wrong to wet your toothbrush before brushing your teeth. The medical community in Japan seems to be divided on this topic, with some dental professionals insisting that wetting the brush before applying toothpaste can dilute the toothpaste’s potency, while others argue that the water helps distribute the toothpaste more evenly. The increasing interest in maintaining good oral hygiene amidst the pandemic has propelled this discussion in the spotlight.

In Japan, dental health is taken very seriously, and daily oral care practices are deeply ingrained. People are taught since childhood to meticulously brush their teeth, and maintaining good personal hygiene is emphasized in society. Since Japan has universal healthcare, any change in brushing guidelines has potential legal implications for the country's health policies. Thus, this divisive subject has particular pertinence and importance.

Similar debates often occur within the dental communities in the US and EU as well. Different dental professionals may have differing opinions on the matter, leading to varying advice given to patients. It goes to show that despite the medical advancements, simple routines like toothbrushing can still prompt ongoing discussions worldwide.