It's standard practice: You brush your teeth for 2 minutes with a toothbrush and toothpaste, then spit and rinse with either water or mouthwash. However, it turns out holding off on rinsing may be key to keeping your teeth healthy -- especially if you're prone to cavities. To find out why we should stop rinsing our mouths immediately after brushing our teeth, we consulted two dentists for their expert insights. Don't miss any of our unbiased tech content and lab-based reviews. Add CNET as a preferred Google source. When you rinse with water after brushing your teeth, you're washing away the fluoride and active ingredients from your toothpaste, says Dr. Whitney White, practice owner at Aspen Dental. "Brush, spit and do not rinse with water," she advises. If you've been rinsing all this time, don't panic. Dr. Roopali Kulkarni, a consumer advisor spokesperson for the American Dental Association, says that if you’re accustomed to rinsing your mouth immediately after brushing, there's no need for concern.…