Medically reviewed by Dr. Boris Pinhasov, DDS – American Board of Orthodontics Diplomate | 20+ Years Experience | Last Updated: March 2026
Orthodontic treatment is widely known for straightening teeth and improving smiles, but one of its most important benefits is often overlooked – clearer, more confident speech. Your teeth, tongue, lips, and jaw all work together to produce sounds, and when any of these structures are misaligned, speech clarity can suffer. Dr. Boris Pinhasov, DDS – a Board-Certified Orthodontist and ABO Diplomate at BP Smiles in Queens – regularly helps both children and adults resolve speech difficulties connected to dental and jaw alignment issues.
How Tooth Alignment Affects Speech
Clear speech depends on precise coordination between your tongue and teeth. When you make certain sounds, your tongue needs to contact specific areas of your teeth and palate. If teeth are crowded, gapped, protruding, or rotated, the tongue cannot reach its correct position, and the resulting sound comes out distorted. Even small alignment issues can have a noticeable effect on how clearly you speak, especially with sounds that require precise tongue-to-tooth contact.
Specific Speech Issues Caused by Misalignment
Several common speech problems are directly linked to orthodontic issues. A lisp – where “s” and “z” sounds come out as “th” – is frequently caused by an open bite or gaps between the front teeth that allow air to escape during speech. Whistling S sounds occur when small gaps between teeth create an airflow channel that produces a high-pitched whistle. Difficulty pronouncing T, D, and L sounds happens when crowding or misalignment prevents the tongue from pressing against the back of the upper front teeth properly.
An overbite can cause slurred speech because the lower jaw sits too far back, limiting tongue movement. An underbite can affect F and V sounds, which require the upper teeth to contact the lower lip. Crossbites may cause lateral lisps, where air escapes over the sides of the tongue instead of the center.
How Braces and Aligners Fix Speech Problems
Braces and Invisalign correct the underlying structural issues that cause speech difficulties. By moving teeth into proper alignment and correcting bite problems, orthodontic treatment gives the tongue the stable reference points it needs to produce clear sounds. Once gaps are closed, crowding is resolved, and the bite is balanced, most patients notice a significant improvement in speech clarity – often within months of completing treatment.
It is worth noting that there may be a brief adjustment period when you first get braces or aligners. Your tongue needs time to adapt to the new hardware in your mouth, and you may notice a slight lisp during the first week or two. This is temporary and resolves quickly as your tongue adjusts.
Children vs Adult Speech Improvement
For children, early orthodontic intervention can prevent speech problems from becoming ingrained habits. When alignment issues are corrected during childhood – while speech patterns are still developing – children often adapt naturally without needing additional speech therapy. The American Journal of Orthodontics has noted that children treated for open bites and spacing issues showed measurable improvements in articulation following orthodontic correction.
Adults can also experience significant speech improvements after orthodontic treatment, though the process may take longer. Adults have spent years compensating for misalignment with adapted tongue positions and speech patterns. While orthodontic treatment corrects the structural cause, some adults benefit from working with a speech therapist alongside their orthodontic care to retrain muscle memory and fully optimize their speech clarity.
Dr. Pinhasov’s Experience with Speech-Related Cases
As Program Director at Maimonides Medical Center’s orthodontic residency, Dr. Boris Pinhasov has treated numerous patients whose primary concern was speech clarity rather than aesthetics. He takes a comprehensive approach, evaluating how each patient’s bite, tooth position, and jaw relationship contribute to their speech patterns. By addressing the root structural cause – not just the cosmetic appearance – Dr. Pinhasov helps patients achieve lasting improvements in both how their smile looks and how clearly they speak.
Schedule a Consultation at BP Smiles Orthodontics
If you or your child struggles with speech clarity and you suspect it may be connected to tooth or jaw alignment, an orthodontic evaluation is a smart first step. Dr. Pinhasov and the team at BP Smiles Orthodontics in Queens, NY can assess whether orthodontic treatment could improve your speech. Contact us today to schedule your consultation.
Frequently Asked Questions
Can braces fix a lisp?
In many cases, yes. Lisps are often caused by gaps between the front teeth or open bites that allow air to escape during S and Z sounds. Braces close these gaps and correct the bite, giving the tongue the contact points it needs to produce clear sounds. Some patients see improvement even during treatment as teeth begin to shift.
Will I have a lisp while wearing braces?
A temporary, mild lisp is common during the first one to two weeks after getting braces or starting Invisalign. Your tongue needs a short adjustment period to adapt to the brackets, wires, or aligners in your mouth. This resolves quickly on its own as you get used to speaking with the appliances.
Do adults see the same speech improvements as children after orthodontic treatment?
Adults can achieve significant speech improvements, though the timeline may be longer. Children adapt more naturally because their speech patterns are still developing. Adults may benefit from combining orthodontic treatment with speech therapy to retrain longstanding compensatory habits and achieve the best results.
Which orthodontic issues most commonly affect speech?
Open bites, large gaps between front teeth, severe overbites, underbites, and significant crowding are the alignment issues most likely to affect speech clarity. Each creates different challenges for tongue placement during sound production. An evaluation with Dr. Pinhasov can determine which specific issues are contributing to your speech concerns.
Disclaimer
Medically reviewed by Dr. Boris Pinhasov, Board-Certified Orthodontist.
This content is for educational purposes only and is not intended as medical advice, diagnosis, or treatment. Please consult a qualified healthcare provider for personalized recommendations.
