While many childhood habits seem harmless, some can influence how teeth, jaw, and facial structures develop over time. In fact, research finds that persistent oral habits such as thumb sucking or prolonged pacifier use are associated with dental problems, including open bites, excessive overjet, and changes in jaw development. 

Understanding the connection between oral habits and dental development can help families identify problems early and protect their child's long-term smile. Read on to explore some of the most common habits pediatric orthodontists look for, how early intervention with habit-breaking appliances can support dental health, and where to find the best orthodontist for kids in Culver City.

Five Habits That Can Change Your Child’s Smile and What Parents Can Do to Help

Because children's teeth and jaws are still developing, repeated behaviors can gradually influence tooth alignment, bite function, and overall oral development. Here are five common habits pediatric orthodontists in Culver City monitor, along with what parents can do to support healthy smile development.

1. Thumb Sucking 

Thumb sucking is a natural self-soothing behavior for many infants and young children. While this is harmless in the first several months of life, the concern grows when the habit persists after baby teeth begin to come in. Repeated pressure from a thumb resting against the front teeth and the roof of the mouth can gradually change how the teeth and jaws develop. Children who suck their thumbs for several years may develop an open bite, which leaves a gap between the upper and lower front teeth when the mouth is closed. Some children also develop protruding front teeth that are more vulnerable to dental injury. Additionally, parents may also notice changes in their child's bite, speech, or chewing patterns. 

2. Extended Pacifier Use

Pacifiers can provide comfort during infancy, but pediatric dental professionals encourage parents to begin limiting pacifier use as children get older because prolonged use can influence tooth alignment and jaw development, similar to thumb sucking. 

When a pacifier remains in the mouth for long periods each day, it can place pressure on developing teeth and oral structures. Over time, this may contribute to bite issues similar to those associated with thumb sucking, including open bites and changes in the position of the front teeth. The longer the habit continues, the greater the potential impact on a child's developing smile. 

3. Tongue Thrusting

Tongue thrusting occurs when the tongue pushes against or between the teeth during swallowing, speaking, or even while resting. This repeated pressure may seem like a minor habit, but it can have a significant effect on tooth alignment over time. Children with tongue-thrusting habits often develop an open bite because the tongue continually presses against the front teeth. Some may also experience speech challenges, including difficulty producing certain sounds. 

Tongue thrusting can be linked to other concerns, such as enlarged tonsils, allergies, or prolonged thumb sucking. Early identification is important because the habit can continue to influence tooth movement even after orthodontic treatment begins. 

4. Nail Biting 

Nail biting is usually seen as a nervous habit, but it can also have a big effect on oral health. Biting hard fingernails places repeated stress on the teeth, jaw joints, and surrounding structures. Over time, this pressure may lead to small chips, uneven wear on tooth surfaces, or tiny cracks in enamel. Some children also develop jaw discomfort from the repetitive motion involved in nail biting. Additionally, this habit has the potential to introduce additional bacteria into the mouth, which increases the risk of illnesses.

How Does Mouth Breathing Affect Facial Growth and Tooth Alignment?

Breathing through the mouth on a regular basis, often associated with allergies, chronic nasal congestion, enlarged tonsils, or airway issues, can also influence the way a child's face and jaws develop. This happens because mouth breathing allows the tongue to rest lower in the mouth rather than against the roof of the mouth. This altered tongue position affects jaw growth and contributes to crowded teeth, narrow dental arches, and bite problems. Signs of mouth breathing include dry lips, restless sleep, snoring, or a constantly open-mouth posture. Since mouth breathing can be linked to underlying medical concerns, early evaluation can help identify the cause and support healthy facial development.

When Should Parents Seek An Orthodontic Evaluation For Oral Habits?

Many oral habits can be corrected more easily when they are identified early. Parents should consider scheduling an orthodontic evaluation when their child turns seven or sooner if they notice any of the following: 

  • Changes in their child's bite
  • Difficulty closing the lips comfortably
  • Protruding front teeth
  • Speech concerns
  • Signs of mouth breathing
  • Habits like thumb sucking or pacifier use that persist beyond the typical developmental years

In most cases, simple habit correction can reduce the need for more complex treatment later. This may include the use of gentle habit-breaking appliances.

Finding the Best Orthodontist in Culver City for Early Orthodontics 

Small habits can shape a child's smile in ways that are easy to miss during the early years. Whether you are noticing signs of problems developing or you’re unsure, our team is here to help.

Dr. Jonathan Shouhed, known to many families as Dr. J, takes a thoughtful and conservative approach to orthodontic care, recommending treatment only when it serves a child's oral health and development. He combines advanced orthodontic technology with highly personalized care while staying deeply involved in the West Los Angeles community through organizations that support local children and families. 

Ready to see how the best orthodontist for kids in Culver City can help your child build a healthy foundation for a confident smile?