Data for the study Preservation of root cementum: a comparative evaluation of power-driven versus hand instruments (Bozbay E. et al., 2018) was collected using forty-eight otherwise healthy, single-rooted teeth. The patients involved in the study were diagnosed with severe chronic periodontitis and had existing treatment plans for tooth extractions. These teeth slated for extraction were treated using four different instrumentation methods. The teeth were treated subgingivally at one approximal site utilizing one of the four distinct instrumentation methods: hand curettes, piezoelectric ultrasonic scalers, piezoelectric ultrasonic scalers following air polishing or air polishing alone. The instrumented and non-instrumented teeth were analyzed post extraction with a dissecting microscope and SEM for measurement of the amount of change in the surface characteristics of the residual cementum. The research methods in the investigation of A comparison of root surface instrumentation using manual, ultrasonic and rotary instruments: An in vitro study using scanning electron microscopy (Devaraj C G, Marda P, Prakash S, Vastardis S., 2012) were both qualitative and quantitative. This data allowed the researchers to provide an analysis of how effective calculus removal was between the three test instruments: the amount of lost tooth substance, and the root surface roughness resulting from the instruments used within the study. The three test instrument types were a hand curette, an ultrasonic instrument, and a rotary bur. SEM examined Thirty-six extracted mandibular incisors. The basis of the measurements is the remaining calculus index (RCI), The loss of tooth substance index (LTSI), and the roughness loss of tooth substance index (RLTSI). Each instrument treated twelve of the thirty-six samples. The time required for the completion of each instrumentation treatment was also noted — the use of the Kruskal-Wallis ANOVA method for multiple group comparisons and the Mann-Whitney test for group-wise comparisons aided in the statistical analysis of the data. The analysis was carried out with SPSS® software (version 13). Data for the study The effect of various ultrasonic and hand instruments on the root surfaces of human single-rooted teeth: A Planimetric and Profilometric study (Antush M., Ashish S. N., R>