People get braces to correct misaligned teeth and jaws, a condition broadly called malocclusion. The reasons range from purely functional (difficulty chewing, jaw pain, uneven wear on teeth) to cosmetic (wanting a straighter smile), and most people have a mix of both. About one in three orthodontic patients today are adults, so braces are far from a kids-only treatment.
The Main Bite Problems Braces Fix
Malocclusion comes in several forms, and most people who get braces have one or more of these issues:
- Crowding: Teeth that are too large for the jaw or simply packed too tightly together, making them overlap or twist.
- Overbite: The upper front teeth overlap the lower front teeth more than they should, sometimes covering them almost entirely.
- Underbite: The lower front teeth extend beyond the upper front teeth, often giving the jaw a protruding appearance.
- Crossbite: Some upper teeth sit inside the lower teeth when the mouth closes, the reverse of normal alignment.
- Open bite: The upper and lower front teeth don’t meet at all when the mouth is closed, leaving a visible gap.
- Spacing: Gaps between teeth caused by missing teeth, small teeth, or a jaw that’s too wide for the teeth it holds.
These problems can be inherited, caused by childhood habits like prolonged thumb-sucking, or result from early loss of baby teeth that allowed neighboring teeth to drift. Sometimes the upper and lower jaws simply grow at different rates.
Chewing, Speech, and Daily Function
A misaligned bite does more than look uneven. When teeth don’t meet properly, your jaw muscles have to compensate every time you chew. Research shows that correcting malocclusion improves the symmetry of chewing movements, helps break food into smaller pieces more efficiently, and trains the jaw muscles to work evenly on both sides. Before treatment, many people unconsciously favor one side of their mouth, which can lead to muscle fatigue and uneven wear on tooth enamel over time.
Speech can also be affected. Certain sounds, especially “s” and “th,” depend on the tongue pressing against the front teeth in a precise way. An open bite or significant crowding can produce a lisp or make some words harder to pronounce clearly. In one study of adults undergoing orthodontic treatment, 85% of those who reported trouble speaking before treatment said it improved afterward.
Protecting Long-Term Dental Health
Crowded or overlapping teeth create tight crevices that are difficult to clean with a toothbrush or floss. Over years, this raises the risk of cavities between teeth and gum inflammation that can progress to periodontal disease. Straightening teeth makes daily cleaning far more effective simply by eliminating those hard-to-reach spots.
Bite misalignment also causes uneven pressure distribution. When only a few teeth bear most of the force during chewing, those teeth wear down faster and are more prone to cracks or fractures. An overbite, for instance, can cause the lower front teeth to press into the gum tissue behind the upper teeth, gradually damaging both the tissue and the enamel. Braces redistribute bite forces across all the teeth, reducing the chance of premature damage.
The Confidence Factor
For many people, the desire for a better-looking smile is the primary reason they seek treatment. That motivation is real and measurable. A study of 102 adults tracked self-esteem and quality of life before and after orthodontic treatment. Before treatment, only 14.7% of patients were satisfied with their smiles. After treatment, that number jumped to 97.1%. Satisfaction with their overall facial appearance rose from 38.2% to 77.5%.
The psychological effects went beyond appearance. Self-confidence scores improved from 60.8% to 96.1%, and among patients who had struggled with social acceptance, 81.8% reported improvement. Roughly 71% of the full group showed measurable gains in self-esteem on a standardized scale. These aren’t trivial numbers. For adults who spent years covering their mouths when they laughed or avoiding photos, the emotional shift after treatment can be as meaningful as the physical one.
How Braces Actually Move Teeth
Braces work by applying steady, gentle pressure to teeth over months. That pressure triggers a biological remodeling process in the bone surrounding each tooth. On the side where the tooth is being pushed, the bone breaks down to make room. On the opposite side, where the tissue is being stretched, new bone forms to fill the gap. This cycle of breakdown and rebuilding is why treatment takes time: the bone needs to continuously reshape itself around each tooth’s new position.
This is also why wearing a retainer after braces is essential. The new bone needs time to fully harden and stabilize. Without a retainer, teeth can drift back toward their original positions before the remodeling process is complete.
When Treatment Typically Starts
The American Association of Orthodontists recommends that children have their first orthodontic evaluation by age 7. That doesn’t mean most 7-year-olds need braces. At that age, enough adult teeth have come in to spot developing problems early. Some issues, like a crossbite or severe crowding, benefit from early intervention while the jaw is still growing. For most kids, though, full braces come later, typically between ages 10 and 14.
Adults make up a growing share of orthodontic patients. Data from a national health survey found that about 32% of people using orthodontics were 18 or older. Better options like clear aligners and smaller brackets have made treatment less visible, removing one of the biggest barriers for adults who avoided braces as teenagers.
What About Jaw Pain and TMJ Issues?
Many people wonder whether braces can fix jaw pain or temporomandibular joint (TMJ) problems. The answer is complicated. A significant number of patients who seek orthodontic care do report TMJ symptoms like jaw clicking, muscle tenderness, or headaches. Some of those patients see improvement after treatment, particularly in oral function, muscle tenderness, and even sleep quality.
However, the research is mixed. Bite misalignment is best understood as one possible contributor to jaw joint problems rather than the sole cause. Braces may help relieve symptoms in certain patients, but they don’t reliably prevent or cure TMJ disorders across the board. If jaw pain is your primary concern, it’s worth having that conversation specifically with your orthodontist rather than assuming braces will resolve it.
How Long Treatment Takes
The average time in braces is between 1 and 3 years, with most cases falling around 18 to 24 months. Mild crowding or spacing issues tend toward the shorter end. Complex cases involving significant bite correction, jaw discrepancies, or teeth that need to move a long distance take closer to three years. Your specific timeline depends on the severity of the problem, your age (adult bone remodels more slowly than a teenager’s), and how consistently you follow care instructions like wearing rubber bands.