OBJECTIVE: The aim of this study was to assess whether repetitive opening and closure of self-ligating bracket clips can cause plastic deformation of the clip. METHODS: Three types of active/interactive ceramic self-ligating brackets (n = 20) were tested: In-Ovation C. Quicklear and WOW. A standardized controlled device performed 500 cycles of opening and closure movements of the brac... https://herbsdailyes.shop/product-category/female-contraceptives/