High-efficiency acid-base catalysts: ZrO, TiO, amine, and Br functionalized porous polymers for CO and epoxide to cyclic carbonate conversion.

The development of new materials capable of converting carbon dioxide (CO) into value-added products has emerged as a crucial strategy in addressing global climate change and promoting sustainable industrial practices. As CO emissions continue to rise, innovative catalytic systems that facilitate its utilization as a C1 carbon source are gaining significant attention. Such advancements not only contribute to carbon capture and utilization (CCU) efforts but also support the transition toward greener chemical processes by reducing dependence on fossil-derived feedstocks.

Teeth Mutilation: Review and Two Case Reports.

Teeth mutilation is referred to as intentional trauma and tooth modification. Since ancient past, they represent various social and cultural habits in different parts of the world, they could be symbol of beauty and youth, strength since the ancient past, clinically, it can be presented by notching, drilling, chipping, grinding, grooving, sharping, filling, staining, and covering the crown by precious metals or even tooth extraction. Teeth mutilation helps to identify the ethnicity of the individual by forensic experts and forensic odontologists; it can also associated with syndromes as Lesch-Nyhan syndrome; furthermore, teeth mutilation can result in reduction or even permanent impairment of the oral system.

Prevalence of Bruxism among the Students of Gulf Medical University: A Cross-Sectional Questionnaire Study.

Introduction: Bruxism is a multifactorial phenomenon that involves grinding or clenching of teeth. The parafunctional habit includes abnormal tooth wear, tooth fracture, pain, and tooth mobility, along with headaches and facial muscle hypertrophy. It is imperative for students to be conscious of teeth grinding along with its possible causes.