Understanding Teeth Crowding and Spacing
Here’s how we explain it to parents at Weeks Orthodontics: the teeth are like cars and the jaw is like a parking lot. Teeth can’t park in a straight line if the parking lot (jaw) is too small or the cars (teeth) are too big. They end up crooked, overlapping, or “pushing” each other out of the way. It’s one of the most common reasons families in the Winter Springs and Oviedo area come to see Dr. Travis A. Weeks and Dr. Shadiya Hasan — and it’s very treatable at almost any age.
Signs of Crowding: “Double Row” or Shark Teeth
One of the clearest signs of crowding in children is what’s sometimes called “shark teeth” or a double row: a permanent tooth coming in behind a baby tooth that hasn’t fallen out yet. This usually means there wasn’t enough room for the permanent tooth to erupt normally, often because the baby tooth didn’t fall out in time. According to the American Academy of Pediatric Dentistry, ectopic eruption (teeth coming in out of position) is one of the most common orthodontic concerns in school-age children.
Other signs of crowding include:
- Teeth that visibly overlap or rotate
- Teeth that appear pushed forward or backward
- Difficulty flossing because teeth are too tight
- A child who avoids brushing certain areas because it’s uncomfortable
Why Crowding Should Be Treated Right Away
It’s hard to clean crowded teeth, which raises the risk of tooth decay, gum disease, and plaque buildup. The American Dental Association (ADA) consistently links poor oral hygiene access — caused by crowding — to higher rates of cavities and periodontal disease. When teeth overlap, toothbrush bristles and floss can’t reach the contact points between teeth, allowing bacteria and plaque to accumulate.
Beyond hygiene, untreated crowding can cause:
- Uneven wear on enamel from misaligned bite forces
- Increased risk of chipping or fracturing teeth
- Jaw strain and TMJ discomfort over time
- Self-consciousness about the appearance of the smile
The Other Side: Spacing and Gaps
Spacing is the opposite problem — too much space between teeth, causing visible gaps. This happens when the teeth are too small for the jaw or when some teeth are missing (congenitally absent teeth, also called hypodontia). The most common gap is a diastema — a space between the two upper front teeth — but gaps can occur anywhere in the arch.
Large gaps can sometimes cause food to get stuck between teeth, which can lead to gum inflammation and localized periodontal problems. They can also affect speech — especially with “s” and “th” sounds — and are a common cosmetic concern for both children and adults.
What Causes Crowding and Spacing?
Both conditions share some root causes:
- Genetics — inherited jaw size and tooth size don’t always match
- Early tooth loss — losing baby teeth prematurely allows other teeth to drift into the space
- Missing permanent teeth — congenitally absent teeth leave gaps
- Oversized or undersized teeth — teeth that are proportionally too large or small for the jaw
- Tongue and lip pressure — tongue thrusting or a low frenum attachment can push teeth apart
How We Treat Crowding and Spacing at Weeks Orthodontics
Treatment depends on the patient’s age, the severity of the crowding or spacing, and whether permanent teeth have fully erupted. Our treatment coordinators at the Winter Springs office and Oviedo office walk every family through their options during the initial consultation. Our approach includes:
Braces for Crowding and Spacing
Metal braces and ceramic braces are highly effective at resolving both crowding and spacing. Braces apply continuous, controlled pressure to move teeth into best position, close gaps, and align the bite over 12–24 months depending on complexity.
Invisalign® for Mild to Moderate Cases
Invisalign® clear aligners can effectively treat many crowding and spacing cases, especially in adults and teens with fully erupted permanent teeth. Align Technology’s ClinCheck® software shows patients a digital preview of their results before treatment even begins.
Early Intervention for Children
For children showing signs of severe crowding, Phase 1 treatment (interceptive orthodontics) around ages 7–9 can use palatal expanders to create space before all permanent teeth erupt, reducing the need for extractions later. The AAO recommends a first evaluation by age 7 for exactly this reason.
Schedule a Free Crowding and Spacing Evaluation
Families from Altamonte Springs, Sanford, Longwood, Chuluota, and the University/UCF area trust us with their orthodontic care. Whether your child’s teeth are crowded or your adult smile has gaps you’ve always wanted to close, Weeks Orthodontics can help. Book a free consultation at our Winter Springs or Oviedo office. Dr. Weeks and Dr. Hasan will review your iTero® digital scan and lay out your options clearly. Call (407) 327-7737.
