What precaution should be taken when one is using a bristle tooth brush?

When using a bristle toothbrush, it's important to choose a brush with soft bristles to prevent gum irritation and enamel wear. Additionally, use gentle, circular motions while brushing to avoid damaging the gums and teeth. Rinse the toothbrush thoroughly after use and replace it every three to four months, or sooner if the bristles are frayed. Lastly, avoid sharing toothbrushes to maintain oral hygiene.