Hello, As per your complain it seems that you have attrition instead of erosion. Attrition of tooth is due to many reasons in your case it seems due to bruxism. Bruxism is a parafunctional habit. It is unconsciously grinding/gnashing of teeth. Thus can be due stress, anxiety, malocclusion and many more. Enamel loss due to soda or a acid is called as erosion and erosion have a different pattern. So, first visit a dentist to find the etiology.

hello sir... Causes of enamel erosion Enamel erosion can be caused by what you eat, particularly: sugary foods, such as ice cream, syrups, and caramel starchy foods, such as white breads acidic foods such as apples, citrus fruits, berries, and rhubarb fruit drinks and juices sodas, which typically contain damaging citric acid and phosphoric acid in addition to sugar excess vitamin C, found in citrus fruits Other causes of enamel erosion include: Teeth grinding chronic acid reflux, also known as gastroesophageal reflux disease (GERD) low salivary flow, also known as xerostomia, which is a symptom of conditions such as diabetes Regular use of certain medications, such as antihistamines and aspirin. Eating disorders like bulimia, which disrupts the digestive system and exposes teeth to stomach acid First the cause has to be ruled out according to that treatment option should be made..... In severe cases, veneers and crowns has to be done

Yes you can go for bite guard as you are saying that you dont have habit of teeth grinding during sleep thats good but after that you have enamel loss so you have to check any other habits like habit of chewing something hard like supari ,sonf and any other habit that cause enamel loss if   you have this kind of habit then you should quit that habit.sodas and some preservatives also cause enamel loss so try to avoid it