The two main effects of soda on your teeth: Erosion and Cavities
There are two main dental effects of drinking soda: erosion and cavities.
Erosion begins when the acids in soft drinks encounter the tooth enamel, which is the outermost protective layer on your teeth. Their effect is to reduce the surface hardness of the enamel. While sports drinks and fruit juices can also damage enamel, they stop there.
Soft drinks, on the other hand, can also affect the next layer, dentin, and even composite fillings. This damage to your tooth enamel can invite cavities. Cavities, or caries, develop over time in people who drink soft drinks regularly. Add in poor oral hygiene, and a lot of damage can occur to the teeth.
Avoiding sodas would greatly benefit your overall oral health.