Yellowing of the front teeth can happen due to tea, coffee, smoking, tobacco, poor oral hygiene, ageing, plaque buildup, certain medicines, or weakening of the enamel. Brushing twice daily with fluoride toothpaste, cleaning the tongue, flossing, and reducing staining foods and tobacco can help prevent further discolouration. Professional dental cleaning is often the safest and most effective first step if stains are due to plaque or tartar. Whitening toothpaste may help mild surface stains, but excessive use of strong whitening products can sometimes damage enamel or increase tooth sensitivity. If the yellow colour is deep or long-standing, a dentist may suggest scaling, polishing, or cosmetic whitening treatments depending on the cause. Regular dental checkups are important to maintain healthy teeth and gums.