Nowadays, both children and parents place a greater value on appearance and aesthetics than has previously been the case. Primary teeth with intrinsic discoloration may be treated by a number of methods, including facings and abrasion. However, dental bleaching may offer a safer alternative that can be completed with less chair time and without harming dental structures. This case report describes the treatment of a darkened primary tooth of a 4-year-old boy with sodium perborate using the walking bleach technique and its 1-year clinical and radiographical follow-up. During this 1-year follow-up period, no signs of any pathology were observed either clinically (sensitivity to percussion or palpation, fistulae, color change) or radiographically (external or internal root resorption, apical radiolucency). In this study, using sodium perborate with the walking bleach technique is found to be successful in whitening primary teeth and can be recommended as a safe alternative for the bleaching of devital primary teeth with intrinsic discoloration.
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