Common Childhood Dental Problems

Tooth Decay in Children

Tooth decay is the single most common chronic childhood disease in the United States — more prevalent than asthma, hay fever, or diabetes. According to the CDC, approximately 42% of children between ages 2 and 11 have had at least one cavity in their primary (baby) teeth. The good news is that tooth decay is almost entirely preventable with the right habits and professional care.

Early childhood caries (ECC) — sometimes called "baby bottle tooth decay" — is a particularly aggressive form of decay that affects infants and toddlers. It typically begins on the upper front teeth and can spread rapidly to other teeth. ECC is caused by frequent, prolonged exposure to sugary liquids such as milk, formula, fruit juice, and sweetened drinks. When a child falls asleep with a bottle or sippy cup, the liquid pools around the teeth for hours, creating an ideal environment for decay-causing bacteria.

Beyond bottle habits, tooth decay in children results from the same factors that affect adults: bacteria (primarily Streptococcus mutans), sugars and starches in the diet, and inadequate oral hygiene. Children who snack frequently, drink juice between meals, or do not brush effectively are at significantly higher risk.

Prevention starts at home with proper brushing habits, limiting sugary snacks and drinks, and ensuring your child receives regular fluoride treatments and dental sealants. When cavities do develop, early treatment is essential. Depending on the extent of decay, we may recommend tooth-colored fillings, stainless steel crowns, or — in cases where decay has reached the nerve — a pulpotomy (sometimes called a "baby root canal") to save the tooth and prevent infection.

Thumb Sucking and Pacifier Habits

Thumb sucking and pacifier use are completely normal in infants and toddlers. These habits provide comfort and a sense of security, and most children naturally stop on their own between ages two and four. Problems arise only when the habit persists after age four, when the permanent teeth are beginning to develop and the jaw is growing rapidly.

Prolonged thumb sucking or pacifier use can cause several orthodontic and developmental problems:

• Open bite: The front teeth do not meet when the mouth is closed, creating a visible gap between the upper and lower teeth.
• Protruding upper teeth: Constant pressure from the thumb pushes the upper front teeth forward and outward, increasing the risk of injury and creating an uneven smile.
• Crossbite: The upper jaw narrows from the inward pressure, causing the upper back teeth to bite inside the lower back teeth rather than outside them.
• Palate narrowing: The roof of the mouth can become higher and narrower, which may also affect breathing and speech development.

If your child is still sucking their thumb past age three or four, start with gentle, positive strategies. Praise your child when they are not sucking, identify triggers (boredom, anxiety, tiredness) and offer alternatives, and avoid punishment or shaming, which can increase stress and make the habit worse. If the habit continues past age five, we can discuss habit-breaking appliances — small, comfortable devices placed behind the teeth that serve as a gentle reminder.

Early Tooth Loss

Baby teeth are designed to fall out on a natural schedule, making way for permanent teeth. But when a baby tooth is lost prematurely — due to decay, trauma, or extraction — it can create problems for the permanent teeth developing underneath.

The most common causes of early tooth loss include:

• Untreated tooth decay: Severe cavities can destroy a baby tooth to the point where it must be extracted.
• Dental trauma: Falls, sports injuries, and accidents can knock out baby teeth before their time.
• Crowding or ectopic eruption: In some cases, permanent teeth push through in the wrong position, displacing baby teeth prematurely.

Why does early tooth loss matter? Baby teeth serve as natural space holders for the permanent teeth that will eventually replace them. When a baby tooth is lost too early, the adjacent teeth can drift into the empty space. This means the permanent tooth may not have enough room to erupt in its correct position, leading to crowding, misalignment, and the potential need for orthodontic treatment later.

The solution is a space maintainer — a small, custom-fitted appliance that holds the gap open until the permanent tooth is ready to come in. Space maintainers are cemented onto an adjacent tooth and require minimal care. Common types include band-and-loop maintainers (for a single lost tooth) and lingual arch maintainers (when multiple teeth are lost on the same arch). Your dentist will check the space maintainer at regular visits and remove it once the permanent tooth begins to erupt.

Dental Injuries and Trauma

Children are active, curious, and still developing coordination — which means dental injuries are extremely common. Falls, sports collisions, playground accidents, and rough play account for millions of dental injuries each year. Knowing what to do in the first few minutes can make the difference between saving and losing a tooth.

Chipped or Cracked Teeth

Rinse your child's mouth with warm water and apply a cold compress to reduce swelling. Save any broken tooth fragments if possible. Contact our office right away — small chips can often be smoothed or bonded, while larger fractures may need a crown or other restoration.

Knocked-Out Permanent Tooth

This is a true dental emergency. Handle the tooth by the crown (the white part) only — never touch the root. Rinse it gently with milk or saline (not tap water). If possible, gently reinsert the tooth into the socket and have your child hold it in place by biting on a clean cloth. If reinsertion is not possible, place the tooth in a container of cold milk and get to our office or an emergency dental clinic within 30 minutes. Time is critical — the sooner the tooth is reimplanted, the higher the chance of saving it.

Knocked-Out Baby Tooth

Do NOT attempt to reinsert a baby tooth, as doing so can damage the developing permanent tooth underneath. Apply gentle pressure with clean gauze to stop any bleeding, use a cold compress for swelling, and call our office. We will evaluate whether a space maintainer is needed to hold the gap until the permanent tooth comes in.

Displaced or Loosened Teeth

If a tooth has been pushed in, out, or to the side, do not try to reposition it yourself. Apply a cold compress and contact our office immediately. We will take X-rays to assess damage to the root and surrounding bone and determine the best course of action.

Prevention is always the best approach. Custom-fitted sports mouthguards dramatically reduce the risk of dental injuries during athletics. We recommend mouthguards for any child participating in contact sports, basketball, soccer, baseball, gymnastics, skating, or any activity with a risk of falls or collisions.

Teeth Grinding (Bruxism)

Teeth grinding — clinically known as bruxism — is surprisingly common in children. Studies suggest that between 15% and 33% of children grind their teeth, most often during sleep. Parents typically notice the sound of grinding at night or observe worn-down tooth surfaces during a dental visit.

In children, bruxism is often associated with:

• Growth spurts and developmental changes in the jaw
• Stress or anxiety (new school, family changes, social pressures)
• Misaligned teeth or an abnormal bite
• Pain from ear infections or teething
• Allergies or airway issues that cause mouth breathing during sleep

The good news is that most children outgrow bruxism without lasting damage to their teeth. However, when grinding is severe, it can cause excessive wear on tooth enamel, jaw pain or stiffness, headaches, and disrupted sleep. If we observe significant wear patterns or your child reports jaw discomfort, we may recommend a custom night guard — a thin, comfortable appliance worn during sleep to protect the teeth. We also evaluate whether airway or bite issues may be contributing factors that need to be addressed.

Gum Disease in Children (Gingivitis)

Many parents assume gum disease is an adult problem, but gingivitis — the earliest and most common form of gum disease — can and does occur in children. In fact, chronic gingivitis is widespread among the pediatric population, particularly in adolescents experiencing hormonal changes during puberty.

Gingivitis in children is almost always caused by inadequate brushing and flossing. When plaque is not removed daily, it irritates the gums, causing them to become red, swollen, and prone to bleeding — especially during brushing or flossing. You may notice blood on your child's toothbrush, pink-tinged saliva, or gums that appear puffy and darker than their normal pink color.

The good news is that gingivitis is completely reversible with proper oral hygiene and professional dental cleanings. Treatment involves removing the plaque and tartar buildup that is irritating the gums, followed by improved daily brushing and flossing habits at home. We will show your child the proper technique and help them understand why cleaning along the gum line is important. Left untreated, gingivitis can progress to more serious forms of periodontal disease, so early intervention matters.

Preventing Dental Problems in Children

While every dental problem discussed on this page is treatable, prevention is always simpler, less expensive, and less stressful for your child. Here is a summary of the most effective preventive strategies:

• Regular dental visits: Schedule checkups every six months starting from your child's first birthday. Routine exams catch problems early when they are easiest to treat.
• Proper brushing and flossing: Brush twice daily with fluoride toothpaste (age-appropriate amount) and begin flossing as soon as two teeth touch. Supervise brushing until around age seven or eight.
• Healthy diet: Limit sugary snacks, juice, and sticky foods. Encourage water as the primary beverage between meals. Offer crunchy fruits and vegetables that naturally clean teeth.
• Dental sealants: Sealants protect the chewing surfaces of back teeth where most childhood cavities develop. Applied around age six (first molars) and age twelve (second molars).
• Fluoride treatments: Professional fluoride varnish strengthens enamel and prevents cavities. Recommended at least twice per year for all children.
• Mouthguards for sports: A custom-fitted mouthguard is the single best way to prevent dental injuries during athletic activities.
• Address habits early: If thumb sucking, pacifier use, or mouth breathing persists beyond age three or four, discuss strategies with your dentist before permanent teeth are affected.

At Glendale Dental Wellness, we partner with parents to build healthy habits that last a lifetime. If you have concerns about your child's teeth or would like guidance on any of the topics covered here, we encourage you to schedule a visit. Early attention to dental health pays dividends for years to come.