One major goal of orthodontic treatment is to achieve straight teeth. But orthodontists also aim to ensure your teeth come together properly when you bite. In fact, by working on the function and the bite, the esthetics usually follow along nicely.
This is because the way your teeth meet plays a huge role in chewing, speaking, jaw comfort, and long-term oral health.
So, are your teeth supposed to touch? The answer is yes, but it’s a little more nuanced than that. In this post, I’ll be sharing all of the basics.
Should Teeth Touch Each Other Side-to-Side?
With ideal or normal teeth alignment, each tooth makes light contact with its neighbors. These contact points help keep teeth stable and prevent food from getting trapped between them and from pushing into the gum tissues.
When there is too much space between two teeth, dentists refer to this as an open contact. Open contacts can occur naturally, but they can also develop from tooth shifting, missing teeth, or even dental work.
Open contacts can lead to problems, including:
- Food constantly getting stuck between teeth
- Increased plaque buildup in the spaces
- Higher risk of interproximal (AKA between the teeth) cavities
- Gum irritation and inflammation
- Teeth shifting over time
Even small gaps make it harder to keep teeth clean and can affect the way your bite functions.
If you have otherwise straight teeth and a healthy bite, dental treatment like a composite filling or veneer can close an open contact.
If you’re dealing with spacing issues between multiple teeth or you have a misaligned bite, orthodontic treatment might be needed to close the gaps and restore proper contact between your teeth.
Are Your Top and Bottom Teeth Supposed to Touch?
Yes, your teeth are supposed to touch when you bite down, but they shouldn’t be tightly pressed together all of the time.
When you close your mouth normally, your top and bottom teeth should meet comfortably, with the top teeth slightly overlapping the bottom teeth. You should be able to see most of the length of your bottom teeth when you put your back teeth together.
This helps you chew efficiently and distributes pressure evenly across your teeth, which prevents uneven wear and breakage.
That’s why having normal teeth alignment isn’t just cosmetic, it’s functional too.
Are Your Front Teeth Supposed to Touch?
Yes, but your front teeth shouldn’t hit on the edges in a healthy bite.
Instead, the upper front teeth should slightly overlap the lower front teeth, typically covering about ⅓ to ½ of the bottom front teeth when you bite down. The bottom front teeth should make gentle contact behind the top front teeth. Sometimes I hear patients calling this a slight overbite, and that’s technically correct.
This bit of overlap helps to:
- Guide the jaw into a comfortable position
- Protect the back teeth from excessive pressure
- Support proper chewing and speech
- Prevent the lower teeth from biting into the roof of the mouth
If your front teeth touch directly or don’t touch at all, it’s a sign of a bite issue, including a(n):
- Open bite
- Overjet (protruding front teeth)
- Underbite
Are Your Back Teeth Supposed to Touch?
Yes, your back teeth (molars and premolars) should touch and interlock properly when you bite down. Ideally, the upper back teeth fit slightly outside of the lower back teeth (and with a proper upper jaw width). Additionally, the cusps (pointy parts) of the top teeth should sit between two bottom teeth like cogs in a wheel.
When the back teeth don’t touch correctly, it can lead to problems like:
- Difficulty chewing (the back teeth do most of the work when you chew)
- Uneven tooth wear
- Jaw strain
- Bite instability leading to movement of teeth
This is a reason why I evaluate the entire bite, not just the visible front teeth.
How Should My Teeth Line Up?
We consider teeth alignment normal when:
- The upper teeth slightly overlap the lower teeth
- The upper back teeth sit just outside the lower back teeth
- The bite pressure is evenly distributed across the teeth
- The teeth come together smoothly without shifting the jaw
When everything lines up as it should, your bite feels comfortable and stable.
But if something is off, you’ll probably notice signs like:
- Teeth that don’t meet properly
- Jaw shifting when you close your mouth
- Uneven wear on teeth
- Clicking or popping in the jaw
- Difficulty chewing
For illustrations and an even more in-depth discussion of normal teeth alignment, check out our blog post, “The Anatomy of an Ideal Smile.”
How Should Your Teeth Rest?
Are your teeth supposed to touch when resting? No, your teeth shouldn’t be touching or clenched together if you’re not using them.
When you’re just chillin’ and not chewing, here’s how your teeth should rest:
- Your upper and lower teeth should be slightly apart, and your jaw should be relaxed.
- Your tongue should rest against the roof of your mouth, with the tip sitting just behind the top front teeth.
- Your lips should be gently closed, not strained.
What Happens If Your Teeth Don’t Line Up Properly?
When the teeth and jaws don’t fit together the way they should, we call this malocclusion, or a bad bite.
Common bite problems include:
Open Bite
The front teeth don’t touch when the back teeth are closed.
Deep Bite (Overbite)
The upper front teeth excessively overlap the lower teeth.
Crossbite
Some upper teeth bite inside the lower teeth.
Underbite
The lower teeth sit in front of the upper teeth.
These issues can affect more than just appearance. Over time, they may lead to:
- Premature enamel wear
- Chipping, fractures, or tooth loss
- Gum recession
- Jaw pain or TMJ problems
- Difficulty chewing or speaking
Read more here: “Understanding Your Bite: Types and Their Significance.”
How Orthodontic Treatment Corrects Bite Problems
Orthodontic treatment works by gradually repositioning teeth within the jawbone to improve alignment, function, and appearance.
At Jeffrey Kwong Orthodontics, my team and I offer:
Dentofacial Orthopedics
This is our fancy way of saying working on the jaw bones to help with the foundation of the bite. It’s most easily done while patients are younger because bones are more moldable. The American Association of Orthodontists recommends an evaluation at age 7 to help with evaluating the jaws and the teeth for this reason. No referral is necessary to be seen and evaluated at our office.
Braces
Traditional braces use brackets and wires to gradually move teeth into their ideal positions. They’re extremely effective, and you can customize them with colorful elastics. We offer metal, clear, and even behind-the-teeth braces here at Jeffrey Kwong Orthodontics.
Clear Aligners
Clear aligners like Spark™ Aligners are removable, virtually invisible appliances that fit over the entire arch of teeth. The aligners are pre-programmed to achieve Dr. Jeff’s custom treatment plan.
As you make your way through the series of trays, your smile gradually takes shape.
InSmile™ Braces
InSmile braces are placed behind the teeth, making them the only truly invisible braces option. I pair the brackets with customized Smartwires that I pre-program to achieve specific tooth movements and correct the bite.
Elastics and Auxiliary Appliances
Sometimes rubber bands or other orthodontic appliances are used to correct how the upper and lower teeth meet.
Retainers
After treatment, wearing a retainer maintains the corrected alignment and prevents your teeth from shifting.
When to See an Orthodontist About Your Bite
An orthodontic evaluation can provide answers if you’re unsure of whether your teeth line up properly or not.
When patients visit Jeffrey Kwong Orthodontics, I assess their x-rays and perform an exam. I look at their jaw and facial anatomy and growth patterns; tooth spacing and alignment; and how their teeth come together when they bite down.
Many bite issues are easier to correct when caught early (the American Association of Orthodontists recommends scheduling the first evaluation by age 7), but orthodontic treatment can be effective for patients of all ages.
Are Teeth Supposed to Touch? The Bottom Line
Yes, your teeth should touch, but in a very specific way.
When you bite down, your top and bottom teeth should come together comfortably, with the upper teeth slightly overlapping the lower teeth. At the same time, each tooth should lightly contact its neighbors to keep everything stable and functioning properly.
If your teeth don’t come together correctly, if food is constantly getting stuck between them, or if your bite feels “off,” it could be a sign of an orthodontic issue that’s worth evaluating.
Or, if you did at-home aligner treatment and your bite changed, that’s also worth an assessment (read more about it in our blog post: “How Come My Back Teeth Don’t Touch After Clear Aligner Treatment?”).
Get Expert Bite Evaluation in El Dorado Hills
If you’re concerned or unhappy with how your teeth come together, schedule an orthodontic checkup to determine whether your bite is functioning the way it should.
At Jeffrey Kwong Orthodontics in El Dorado Hills, my team and I combine advanced technology with personalized care to create healthy, balanced smiles for kids, teens, and adults.
