Canted teeth, where your smile line visibly tilts to one side, can be corrected through orthodontics, minor surgical aids, or jaw surgery depending on the cause. Most people notice the issue when their front teeth appear higher on one side than the other, creating an uneven or slanted smile. The right fix depends on whether the tilt comes from the teeth themselves or from the underlying bone structure of your jaw.
What Causes a Canted Smile
A canted smile develops from one of two sources: the teeth grew in unevenly within the jaw, or the jaw itself developed asymmetrically. In many cases, it’s a combination of both. Dental cants happen when teeth on one side of your mouth sit higher or lower than the other side, even though the jawbone is relatively symmetrical. This can result from a molar on one side drifting upward after losing an opposing tooth, or from one side of the dental arch developing differently during childhood.
Skeletal cants are a different situation. These involve the actual bone of the upper or lower jaw growing unevenly, which tilts the entire foundation the teeth sit on. Conditions that cause asymmetric jaw development, trauma during growth, or congenital differences in facial structure can all produce a skeletal cant. The distinction matters because dental cants are generally fixable with orthodontics alone, while skeletal cants often require a surgical component.
How Dentists Measure the Tilt
Your orthodontist will measure the degree of cant using X-rays taken from the front (called frontal cephalograms) and clinical measurements. The key reference points are the true horizontal line of your face, typically drawn along the brow ridges, and the line connecting your upper molars on each side. The angle between these two lines tells your provider exactly how many degrees your bite plane is off.
Research published in the Journal of Oral and Maxillofacial Surgery found that 90% of observers can detect a cant once it reaches 4 degrees. Below that threshold, the tilt is usually too subtle for others to notice, even if it bothers you. The degree of cant also correlates closely with a simpler measurement: the difference in millimeters between the right and left sides when measuring from the inner corner of each eye down to the tip of the corresponding canine tooth. A larger millimeter difference means a steeper tilt.
Fixing a Dental Cant With Orthodontics
When the cant is purely dental, meaning the jawbone is reasonably symmetrical but the teeth sit unevenly, braces or clear aligners can level the smile. The goal is to push some teeth upward (intrusion) and let others move downward (extrusion) until the biting surfaces line up evenly.
Clear aligners work well for mild to moderate cants. Small tooth-colored attachments bonded to specific teeth give the aligner trays extra grip, allowing them to rotate, tilt, or shift teeth with more precision than the plastic alone could achieve. Your orthodontist may also add elastics, small rubber bands that connect upper and lower teeth, to coordinate how the jaws come together as the teeth shift. Aligners tend to perform best when the issue is limited to tooth positioning rather than a narrow or underdeveloped jaw.
Traditional braces offer more control for moderate cants. The wire running through the brackets can be bent to deliver different forces to different teeth, making it easier to intrude one side while holding the other in place. For cases where specific teeth have drifted significantly out of line, braces give the orthodontist more options to fine-tune individual tooth movements.
Temporary Anchorage Devices
For more stubborn dental cants, orthodontists sometimes place tiny titanium screws directly into the jawbone to serve as fixed anchor points. These temporary anchorage devices (TADs) allow forces to be applied in directions that would be difficult with braces or aligners alone. They’re particularly useful for intruding teeth that have over-erupted on one side, which is one of the most common causes of a dental cant. The screws are small, placed under local anesthesia, and removed once the teeth reach their target positions. TADs can sometimes eliminate the need for jaw surgery in borderline cases by achieving corrections that standard orthodontics can’t.
When Jaw Surgery Is Necessary
If the cant originates from the bone rather than the teeth, orthodontics alone typically can’t fully correct it. Skeletal cants usually require orthognathic surgery, where a surgeon repositions the jawbone itself. The most common approach is a LeFort I osteotomy, a procedure where the upper jaw is separated from the skull, repositioned to eliminate the tilt, and secured with small plates and screws. For facial asymmetry involving the lower jaw as well, surgeons often combine this with a procedure that repositions the lower jawbone.
Two-jaw surgery has traditionally been the standard recommendation for significant facial asymmetry. However, newer approaches can sometimes achieve comparable results with single-jaw surgery. One protocol combines small controlled bone cuts in the upper jaw (corticotomy) with temporary anchorage devices to reposition the upper teeth and bone, followed by lower jaw surgery alone. This reduces the scope of the operation while still correcting the cant. The best candidates for this less invasive path are people whose upper jaw needs only modest repositioning, with the primary asymmetry in the lower jaw.
Orthognathic surgery requires months of orthodontic preparation beforehand to align the teeth within each jaw, so they’ll fit together properly once the bone is repositioned. Recovery typically involves several weeks of a soft diet and restricted jaw movement, with full healing taking a few months. The orthodontic braces or aligners usually stay on for a period after surgery to fine-tune the final bite.
Dental Restorations as a Cosmetic Fix
For very mild cants where the tilt is mostly a visual issue rather than a functional one, some dentists offer cosmetic solutions like porcelain veneers or crowns. By making teeth on the “short” side slightly longer and reshaping those on the “tall” side, a dentist can create the illusion of a level smile line without moving any teeth. This approach doesn’t change the actual bite or address underlying asymmetry, so it works best for people whose cant is barely noticeable when chewing but bothers them aesthetically. It’s a faster option than orthodontics, often completed in two or three visits, but involves permanently altering healthy tooth structure.
What Happens Without Treatment
A canted bite distributes chewing forces unevenly. Over time, the teeth bearing more pressure wear down faster, and the jaw joint on the overloaded side can develop problems. Uneven wear, cracked molars, and gum recession are common consequences of a bite that doesn’t meet evenly. The jaw joint cartilage can deteriorate, and the disc that cushions jaw movement can slip out of position, leading to clicking, pain, or episodes where the jaw locks open or closed.
These problems tend to compound. As teeth wear unevenly, the cant can gradually worsen, increasing the asymmetric load on the jaw joints. Muscle imbalances may develop on one side of the face, and some people notice postural changes as the body compensates for the uneven jaw position. Not every cant progresses to these complications, particularly mild ones, but significant cants left untreated for years carry real risk of joint damage and accelerated tooth breakdown.
Choosing the Right Approach
The severity and origin of your cant determine which treatment makes sense. A purely dental cant under 4 degrees, the threshold where most people start to notice it, may not need treatment at all unless it’s causing bite problems. Mild to moderate dental cants respond well to aligners or braces, sometimes with TADs for extra control. Skeletal cants generally need surgery for full correction, though orthodontics can sometimes camouflage a mild skeletal issue by repositioning the teeth to compensate.
Your first step is a consultation with an orthodontist who can take the appropriate imaging to distinguish between a dental and skeletal cant. Many general dentists can spot a cant, but the detailed measurements and treatment planning require orthodontic or oral surgery expertise. If surgery is recommended, you’ll typically see both an orthodontist and an oral and maxillofacial surgeon who coordinate the treatment plan together.