Please choose the correct ending to complete the given sentence: Health: [header] How to restore tooth enamel [title] Learn the causes of tooth enamel erosion. [step] There are many different causes of tooth enamel erosion including poor diet choices and some medical conditions. Learning the causes can help you prevent further decay.

Ending1: To learn the causes, see your doctor or dentist. These may be the following : [substeps] Your dentist has had show disorders and not used certain tools. Ending2: [substeps] Look for: mold or mildew build-up at the site of decay or erosion, bad dental hygiene, and less frequent dental cleanings. If you are experiencing tooth enamel erosion, you may have a reason to suspect moisture at the site. Ending3: [substeps] Antibiotic help slow down decay of enamel which is why you'll need to avoid foods that are high in sugar, caffeine, and cholesterol. Unsaturated fats provide antioxidants but also prevent periodontitis. Ending4: [substeps] Acidic drinks, including citrus juices and sodas can contribute to enamel erosion. Diets high in starches and sugars can also lead to enamel erosion.

Answer format: ending1/ending2/ending3/ending4