This means proper brushing and flossing. There may not be much difference between using non-fluoridated and fluoridated toothpaste for effective cleanliness, but the fluoridated toothpaste will definitely be much more effective in protecting the teeth from acid dissolution which could lead to tooth decay. The effectiveness of tartar control toothpastes are nebulous. There have been some formulations which have been proven to be effective, but these brands have not been marketed because safety tests are pending or the taste is unacceptable. Current formulations with pyrophosphate salts and sodium fluoride inhibit bacterial pyrophosphatase enzymes and crystal growth.
Tooth enamel can be quite susceptible to effects of acid and sugar from lemon juice and soda.
The best way to prevent acid dissolution from these compounds is to limit their intake. The next best preventative measure is to practice good oral hygiene. Fluoridated toothpaste will be much more beneficial in strengthening teeth against lemon juice and soda. Fluoridated mouthrinses can also be beneficial for protection against acid dissolution of tooth enamel. You should not rely on this information as a substitute for personal medical attention, diagnosis or hands-on treatment.