# Tongue-Tie and Orthodontics: Crowding and Relapse > How tongue tie orthodontics works: how a tight frenum affects crowding, why teeth relapse after braces, and when a release before braces helps patients. Canonical: https://frenectomyguide.com/articles/tongue-tie-and-orthodontics Last updated: 2026-10-31 ## Key clinical takeaways - A tongue tie (a short, tight lingual frenulum) can restrict tongue movement, and that restriction is one of several factors an orthodontist weighs when teeth are crowded or keep drifting… - Crowding has many causes: tooth size relative to jaw width, eruption path, lost or retained baby teeth, habits, and growth pattern. - Timing changes the mechanics of the case, and neither order suits every patient. - Relapse is the return of teeth toward their pre-treatment position, and it is common enough that retention is treated as a permanent phase rather than an optional one. - Planning follows a standard sequence, and the tongue assessment is one step in it rather than a separate track. ## Quick answer A tongue tie (a short, tight lingual frenulum) can restrict tongue movement, and that restriction is one of several factors an orthodontist weighs when teeth are crowded or keep drifting after braces come off. Tongue tie orthodontics is not a standalone straightening treatment — it is the decision about whether a frenectomy, when indicated, should happen before braces, after braces, or not at all. A tongue tie is a tight or short band of tissue connecting the tongue to the floor of the mouth that limits tongue-tip elevation and forward movement. Most people with a tongue tie have no orthodontic problem at all, so release is considered only when restricted tongue function is documented alongside crowding, relapse, or a specific orthodontic goal. ## At a glance - Roughly 1 in 10 to 1 in 20 newborns has a notable lingual frenulum, and only a fraction of those have function-limiting restriction. - A frenectomy typically heals in about 7 to 14 days, with soreness peaking around days 2 to 4. - Comprehensive orthodontic treatment usually runs 18 to 24 months, followed by retention that commonly continues long term. - Common Procedure Codes are used for this: D4260 for frenotomy and D7960 for frenectomy, with D8010 for the orthodontic treatment itself. - Studies of tongue-tie release in newborns have found low-quality or insufficient evidence of benefit, which is why orthodontic planning waits for clear functional findings. - Retainers worn only a few nights a week are the most common reason lower incisors crowd again after braces. ## Can a tongue tie cause crowding and crooked teeth? Crowding has many causes: tooth size relative to jaw width, eruption path, lost or retained baby teeth, habits, and growth pattern. A restricted tongue is one contributor among many, not a cause on its own. The mechanism is mechanical. When the tongue cannot rest forward against the palate, the tongue may sit low in the mouth or press forward against the lower incisors during swallowing and speech. Sustained forward pressure from the tongue is the classic pattern associated with lower incisor crowding and with anterior open bite. This is also the difference between a tongue tie and a [tongue thrust habit](https://frenectomyguide.com/articles/tongue-thrust-vs-tongue-tie/), which can produce a similar bite pattern without a tight frenulum. Orthodontists therefore grade a tongue tie by structure (how much tissue is there, where it attaches) and by function (how far the tongue can lift, spread, and protrude). Grading matters less than the functional exam: see [tongue tie grading and assessment tools](https://frenectomyguide.com/articles/tongue-tie-grading/) for the common systems. In practice, a tongue tie is an orthodontic concern when the restriction is clearly affecting tooth position. Signs that point that way include lower incisors that crowd or flare outward, a bite that opens at the front, difficulty cleaning the lower front teeth, and a tongue that cannot rest against the palate behind the upper incisors. ## Tongue tie release before vs after braces Timing changes the mechanics of the case, and neither order suits every patient. | Timing of the tissue | Heals fully before appliances go on, so the tissue is compliant at bonding | Heals during retention, when teeth have already settled | | --- | --- | --- | | Effect on alignment | Removes the restriction early, which may reduce the pressure that contributed to crowding | Does not change the alignment achieved during treatment | | Effect on relapse | May help stability if the restriction was actively displacing teeth | Addresses the cause of relapse only if relapse was tongue-driven | | Recovery in schedule | Heals before the start of active treatment, no missed appliance time | Straightforward, but may overlap with retainer adjustments | | Best fit | Documented restriction with crowding forming or recurring | Stable, good result with relapse that correlates to tongue posture | Practitioners commonly advise against release in the first days of life absent a breastfeeding problem, and the evidence for early newborn release is weak — see [frenectomy in the first week](https://frenectomyguide.com/articles/frenectomy-newborn-first-week/) for that context. In older children and adults, the choice is an orthodontic judgment made alongside the treating orthodontist, and the two [frenectomy before braces](https://frenectomyguide.com/articles/frenectomy-before-braces/) and [frenectomy after braces](https://frenectomyguide.com/articles/frenectomy-after-braces/) pages cover the practical details of each sequence. ## Why do teeth relapse after braces? Relapse is the return of teeth toward their pre-treatment position, and it is common enough that retention is treated as a permanent phase rather than an optional one. The usual causes are well established: - **Untreated growth.** Continuing vertical and forward jaw growth can change the bite even when teeth never moved back. - **Incomplete correction.** If a case is finished with teeth crowded inside the arch or a rotated tooth unresolved, that position returns. - **Unstable soft-tissue forces.** A restricted tongue or a tongue thrust habit that was never addressed can push teeth off their retainer-supported position. - **Poor or short retainer wear.** This is the single most common cause. Retainers worn only a few nights a week produce measurable re-crowding within a year or two. A tooth that was moved outside its bony housing, or a rotated tooth, is also more relapse-prone than one moved a small distance. The connection to a tongue tie is specific: if the tongue is unable to rest in its normal posture, the muscles that hold teeth in position are working against the retainer instead of with it. In that case, addressing the restriction is part of relapse control, not a separate concern. Relapse and re-treatment can also occur after a release if the tissue re-attaches or tightens again — see [signs of reattachment](https://frenectomyguide.com/articles/frenectomy-reattachment-signs/). ## How is tongue tie orthodontics treatment planned and how long does it take? Planning follows a standard sequence, and the tongue assessment is one step in it rather than a separate track. 1. **Document the bite and photographs.** Full records show where the teeth sit and how much arch space is actually missing. 2. **Measure the tongue.** Resting posture, range of motion, and how the tongue meets the palate during a swallow are recorded alongside a structural grade. 3. **Look for the mechanical link.** The orthodontist checks whether tongue position plausibly explains the crowding, open bite, or relapse pattern rather than assuming it. 4. **Decide on release, and when.** If a release is indicated, timing is set relative to bonding or retention, and the plan is shared with the person doing the release. 5. **Retain deliberately.** A retainer plan is chosen to hold the corrected position, with a schedule matched to the risk of relapse. 6. **Recheck.** Retention reviews typically happen at regular intervals, and the tongue is re-examined if bite changes are noticed. On timing: comprehensive alignment usually takes 18 to 24 months, which includes the active phase, and the retention phase then extends indefinitely for most people. A frenectomy adds roughly one to two weeks of healing to the schedule, with soreness most noticeable on days 2 to 4 and comfortable speech generally returning within a week or two. Brushing and oral care during that window are covered in [brushing teeth after a frenectomy](https://frenectomyguide.com/articles/brushing-teeth-after-frenectomy/). ## What happens if you do not release a tongue tie? Not releasing is a perfectly reasonable choice, and for most people it is the right one. The consequences of leaving a restriction in place depend on how much it limits function. - **If function is normal**, nothing changes orthodontically. Many adults live with a mild tongue tie without crowding, decay, or gum issues. - **If the tongue cannot reach the palate**, tongue posture stays low, which can support a tongue thrust pattern, anterior open bite, and lower incisor flaring. - **If hygiene is affected**, the restricted floor-of-mouth area collects plaque and can contribute to gingivitis, recession, and decay near the lower front teeth. - **If the restriction is treated but the tissue re-attaches**, symptoms can return in the same pattern, and a second look may be needed. None of these outcomes are automatic, and a tongue tie that is not releasing may still be re-examined later if a bite problem develops. The case for not treating is set out in [not releasing a tongue tie and the possible outcomes](https://frenectomyguide.com/articles/not-releasing-tongue-tie-outcomes/). ## Frequently Asked Questions ### Does a tongue tie actually cause crowded teeth? Not by itself. A tight lingual frenulum can contribute to lower incisor crowding and open bite by limiting tongue posture, but arch size, tooth size, habits, and growth are usually the larger factors. ### Should a tongue tie be released before or after braces? Before braces if the restriction is actively affecting the case and healing time can be absorbed up front. After braces if the teeth are stable and the release is aimed at relapse control or hygiene. ### How long does a frenectomy take to heal? Most sites are comfortable within 7 to 14 days, with soreness peaking around days 2 to 4 and normal speech usually returning within one to two weeks. ### Is frenectomy painful? Most people manage it with over-the-counter pain relief. Expect tenderness for several days and a small white or yellowish patch at the healing site, which is normal tissue. ### Will releasing a tongue tie stop my teeth from relapsing? Only if the restriction was genuinely driving the relapse. Relapse also comes from growth, incomplete correction, and short retainer wear, all of which need their own management. ### How do orthodontists decide if a tongue tie needs release? By examining function, not just appearance: how far the tongue lifts, spreads, and protrudes, where it rests at rest, and whether that posture lines up with the crowding or relapse pattern. ## References - American Academy of Pediatric Dentistry (AAPD) — policy statements and best practices on oral habits, frena, and pediatric oral health. - American Academy of Otolaryngology — Head and Neck Surgery (AAO-HNS) — clinical practice guidance on tongue-tie assessment and management. - Cochrane Database of Systematic Reviews — systematic review of surgery for tongue-tie and breastfeeding outcomes. - Mayo Clinic — patient information on frenotomy and frenectomy. - Cleveland Clinic — patient information on tongue-tie release and recovery. - NHS (National Health Service) — patient information on tongue-tie and frenotomy in babies. ## Medical disclaimer This article is general educational information and is not medical advice. It cannot diagnose your tongue tie, your bite, or your risk of orthodontic relapse. Orthodontic decisions about release and sequencing should be made with a licensed orthodontist and the provider who would perform the procedure, based on your own examination and records. Individual healing, tooth movement, and retention outcomes vary from person to person. Reviewed by the frenectomyguide.com editorial team · Last updated 2026-10-31. ## Related guides in this series - [Who Diagnoses a Tongue-Tie? Pediatrician, Dentist or Lactation Consultant](https://frenectomyguide.com/articles/who-diagnoses-tongue-tie) — The short answer to who diagnoses tongue tie is that a pediatrician, a dentist (often a pediatric dentist), or an International Board Certified Lactation Consultant (IBCLC) can identify it, dependi… - [What to Eat After a Frenectomy](https://frenectomyguide.com/articles/what-to-eat-after-frenectomy) — After a frenectomy—a procedure to release a tight frenulum in the mouth—you should eat soft, cool, and bland foods that require minimal chewing. Ideal choices include yogurt, applesauce, lukewarm b… - [Upper Lip Tie in Adults: Symptoms and Treatment](https://frenectomyguide.com/articles/upper-lip-tie-adults) — An upper lip tie in adults is a tight or thick band of tissue (the labial frenulum) connecting the upper lip to the gums, which can restrict normal lip movement. While often addressed in infancy, m… ## About this guide This medical guide follows generally accepted clinical guidance for oral restrictions and is informational only. It is not a substitute for personalized medical advice. Always discuss diagnosis and treatment with a qualified physician. ## Related - [Who Diagnoses a Tongue-Tie? Pediatrician, Dentist or Lactation Consultant](https://frenectomyguide.com/articles/who-diagnoses-tongue-tie) - [What to Eat After a Frenectomy](https://frenectomyguide.com/articles/what-to-eat-after-frenectomy) - [Upper Lip Tie in Adults: Symptoms and Treatment](https://frenectomyguide.com/articles/upper-lip-tie-adults) - [All frenectomy guides](https://frenectomyguide.com/articles) - [Find a frenectomy provider](https://frenectomyguide.com/clinics)