background bleaching of traumatized discolored teeth is considered an important issue in esthetic dentistry. various methods have been introduced for bleaching, some of which may have adverse effects on soft or hard tissues of the tooth. objectives the objective of the study was to evaluate the effects of ktp laser bleaching on enamel of traumatized teeth. materials and methods a square of 36 m...

Among different staining methods used to demonstrate the nuclear abnormalities, Feulgen is one of the most reliable method. Feulgen staining is specific, sensitive method for evaluating the DNA damages.It has been shown that using non-DNA specific stains for monitoring the nuclear anomalies lead to false-positive or false-negative results. From self-experience, immersing the stained slides in h...

Objective To compare and evaluate the efficacy of tooth bleaching with prior application two different desensitizing agents such as sodium fluoride 5% potassium nitrate. Materials methods A total 108 extracted human maxillary central incisors were stained in black coffee solution stored artificial saliva for colour stabilization. The specimens randomly divided into three groups (n = 36) accordi...