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AIM The purpose of this study was to compare the shaping characteristics of Ni-Ti K-files and Ni-Ti S-files manipulated by hand. METHODOLOGY A total of 60 extracted human roots were embedded in resin blocks. The embedded roots were divided into three groups: (i) roots with straight; (ii) apically curved; and (iii) continuously curved canals. Each of the(More)
We propose a methodology for optimizing the execution of data parallel (sub-)tasks on CPU and GPU cores of the same heterogeneous architecture. The methodology is based on two main components: i) an analytical performance model for scheduling tasks among CPU and GPU cores, such that the global execution time of the overall data parallel pattern is(More)
The aim of this study was to compare the shaping characteristics of two hand instruments: the NiTi K-files and the NiTi S-files. A total of 60 extracted human roots were embedded in resin blocks. The roots were divided into three groups according to their shape: straight, apically curved and entirely curved. Each of the three groups was divided into two(More)
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