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Maintaining good oral health is essential to overall well-being, but some habits can put teeth and gums at risk. For example, nail-biting, teeth grinding and improper brushing techniques may seem harmless, but they can lead to cavities, gum disease and even damaged teeth or tooth loss over time. 

, an assistant clinical professor in the Department of Periodontics, Division of Dental Hygiene at ����ý , specializes in preventive and periodontal care. As a dentist and registered dental hygienist with more than 26 years of experience in community dentistry, Rajesh helps her patients identify and address some of these habits and provides expert guidance to help them protect their smiles and long-term oral health. 

Expert insights 

Rajesh shared her list of the most common habits that can harm teeth and simple tips to help break them to maintain a healthy smile.

Nail biting
Nail biting is often linked to stress or anxiety, but it can cause chipped teeth, enamel damage and an increased risk of infection due to bacteria exposure. “Nail biting not only weakens teeth but also increases the risk of infections,” said Rajesh.

Tip: Keep nails short or use bitter-tasting nail polish to discourage the bad habit or stress-relief techniques to stop the habit.

Teeth grinding or bruxism
Grinding or clenching teeth, especially during sleep, can cause enamel wear, jaw pain and headaches. “Chronic grinding can lead to fractures and severe enamel loss on teeth,” explained Rajesh.

Tip: Wear a custom-fitted night guard, which a dentist can make, and practicing relaxation techniques can help.

Using teeth as tools 
While using teeth to open packages, tear off tags or hold things may seem convenient, it can cause cracks and chips and can be dangerous. “Teeth are for chewing food, not cutting objects,” Rajesh warned.

Tip: Keep scissors nearby to avoid damaging teeth.

Chewing ice 
Chewing ice can cause small fractures in tooth enamel, leading to sensitivity and long-term damage. “Constant ice chewing weakens enamel and increases the risk of breakage,” Rajesh said.

Tip: Opt for cold beverages without ice, use a straw with iced beverages or chew sugar-free gum instead of chewing on ice.

Eating too many sugary snacks
Frequent consumption of sugary foods promotes bacteria growth, leading to plaque buildup and cavities. “The longer sugar sits on teeth, the more damage it causes,” explained Rajesh.

Tip: Choose healthier snacks like fruits and nuts, rinse the mouth after eating sweets and limit the number of times snacks are eaten during the day.

Smoking and tobacco use
Tobacco use stains teeth, increases the risk of gum disease and raises the likelihood of oral cancer. “Smoking significantly raises the risk of gum disease and slows healing,” Rajesh said.

Tip: Talk to a dentist about tobacco cessation counseling or consider nicotine replacement therapy to help quit.

Brushing too hard or not flossing 
Overbrushing can wear down the enamel while neglecting to floss allows plaque to build up between teeth. “Gentle, consistent brushing with the correct technique is key to healthy gums and teeth,” advised Rajesh.

Tip: Use a soft-bristled toothbrush and floss daily to remove plaque.

Skipping regular dental checkups 
Avoiding the dentist can allow small problems to turn into serious issues, like deep cavities and gum disease. “Regular visits are crucial for early detection and prevention,” Rajesh stated.

Tip: Schedule dental checkups with a cleaning every six months to keep a healthy smile.

Take the next step toward a healthier smile

Breaking bad habits is a great first step, but professional dental care is essential for maintaining long-term oral health. Regular checkups help prevent major issues, provide dental cleanings and offer personalized guidance to improve oral health and keep teeth strong.

To learn how  provides comprehensive care tailored to a patient’s needs, call 210-567-6453 or visit to take the next step toward a healthier smile.