Eat breakfast first or brush your teeth first?Don't look at it as a turtle hair problem, on a weekend morning, but I had a fierce fight with my parents for this**.
You know, but if you work in a ** chain dental hospital, how will the dentist answer?
There is no one definitive, absolute answer to this question, as individual habits and preferences play a large role in this question. From an oral hygiene standpoint, I prefer to brush my teeth after breakfast. ”
We need to understand the true purpose of brushing our teeth. Brushing teeth is mainly done to remove plaque and food debris to keep the mouth clean and hygienic. Plaque is a naturally occurring bacterial community in the mouth that, if not removed in time, can form tartar, which can lead to oral problems such as gingivitis and periodontitis. Food scraps are also a hidden danger to oral hygiene, as they provide a "breeding ground" for plaque formation.
If we choose to brush our teeth before eating, our mouths will accumulate plaque and food debris again after breakfast. In this way, we must brush our teeth again before lunch to keep our mouth clean. This is unrealistic for many people, and it is good for the average person to brush their teeth correctly twice a day, in the morning and in the evening, for more than 3 minutes each time. 
If we choose to eat first and then brush our teeth, we can remove plaque and food debris that has accumulated during the night and just formed during breakfast with a single brushing at the end of breakfast. This not only improves the efficiency of brushing, but also keeps your mouth clean and hygienic for longer. 
From an oral hygiene point of view, brushing your teeth after breakfast is more appropriate. That's not to say it's wrong to brush your teeth before breakfast. The best habit is to rinse our mouths and floss food debris after eating, no matter when we choose to brush our teeth, so as to minimize the amount of time food debris and plaque stay in our teeth and keep our mouth clean.
Focus on your oral health