You've probably heard the claim that it takes more muscles to frown than to smile. It's usually framed as a feel-good reason ...

The human mouth creates an ideal environment for bacterial growth due to its warm, moist conditions and constant exposure to food particles. While saliva naturally helps cleanse the mouth and ...

The study used artificial saliva to mimic the environment of a human mouth during the process. Researchers found minimal microplastics in the artificial saliva after simulated wear and cleaning. They ...

Browse 150+ pixel human heart stock illustrations and vector graphics available royalty-free, or search for pixel heart to find more great stock images and vector art. Heart attack related editable ...

They study involved examining the oral microbiome – a diverse array of microorganisms that reside in the human mouth – of 268 newly-married couples in Iran. STORY CONTINUES BELOW THIS AD “Given that ...

May 21, 2025 • We asked some of our trusted critics which upcoming books they are most looking forward to. Here are the fiction and nonfiction titles they picked.

Latest research on periodontal diseases. Information on a broad range of dental health topics, including dental implants, cosmetic dentistry, and general dental health.

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