Evaluation of Retention Force of Polyetheretherketone (PEEK) and Cast Cobalt-Chromium Circumferential Clasps: A comparative study

Aims: The aim of this in-vitro study was to compare the retention force of Polyetheretherketone (PEEK) and Cobalt-Chromium (Co-Cr) clasps by mechanical cycling test simulating ten years of use.Materials and Methods: 72 clasps samples were fabricated on a standardized e-max upper right first premolar, it is divided into 24 Co-Cr clasps, and 48 PEEK

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Protest and digital adaptation

Autocratic governments routinely interfere in digital communication Course a pied - Femme - Vetements - Manteau - Nylon technology for political purposes.However, citizens can use different technologies to bypass government interference.This article examines how political protest influences the use of anonymity-preserving digital services in autocr

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