For the purposes of whitening teeth, usually, a protective gel or rubber shield is relied on to prevent the bleaching agent used from harming the gums. Dentists are also required to adopt all protective and preventive measures to ensure that any discomfort experienced during teeth whitening process is as minimal as possible. Only the most common bleaching agents are relied upon by the dentists keeping in mind the patients’ comfort. However, there is a minimalistic amount of teeth sensitivity which is inevitable after the procedure, but it will only be for a short duration.