Whitening Techniques 1. In the office, it can be more easily controlled and monitored by a professional. Reduces the risk of patients selecting and using incorrect products, product misuse, inappropriate application procedures, and undiagnosed disease effects.2. Home bleach: easy to use, quick and economical. Home teeth whitening methods include chewing gum, rinse, toothpaste, paintable film, whitening strips, whitening pen, whitening gel, and laser teeth whitening. The effects of both at-home and in-office whitening are temporary. Follow-up treatments have often been found to take one to three years. Both techniques are effective but the results may vary depending on factors such as the type of stain, the patient's age, the concentration of the whitening agent, the time and frequency of treatment. Contraindications Pre-existing sensitive teeth Acid erosion Receding gums (receding gums) Sensitive gums Sensitive to hydrogen peroxide Defective dental restorations Pregnant or breastfeeding women Children under the age of 16 - Teeth whitening may irritate the pulp or make it sensitive as the pulp chambers are large here