Yes. A narrow dental arch can cause the tongue to constantly press against the back of your teeth. This resting pressure mechanically pushes on the gum tissue, leading to lingual gum recession.
Invisalign arch expansion is a physiological orthodontic treatment that physically increases intraoral volume, reducing the mechanical pressure of the tongue against the lingual gingiva ( the gums on the tongue side of the mouth). At Enamel Dentistry The Domain, our office provides Invisalign arch expansion. This process of widening the dental arch prevents tongue-driven gum recession while improving salivary flow. Studies show that increased salivary flow allows the mouth to naturally neutralize harmful oral pathogens, such as Streptococcus mutans (S. mutans), thereby enhancing long-term periodontal health.
It can be frustrating to feel like you are losing a battle against gum recession when you are doing everything right. You may have noticed gum recession on the back side of your teeth despite regularly brushing, flossing, and even investing in an electric toothbrush. At Enamel Dentistry The Domain, we have noticed that the culprit for gum recession is not always oral hygiene, but oral anatomy. If your dental arch is narrow, your tongue may be unable to rest naturally in the mouth. By applying constant pressure on your teeth, your tongue could be quietly causing gum recession.
Physiological Arch Expansion via Invisalign is the process of gradually widening the upper and lower jaw. Medical literature supports Invisalign arch expansion as a viable option for dental crowding [1] (Ma et al., 2023). Traditional orthodontics focuses on the front teeth; however, Invisalign focuses on the intraoral volume, the three-dimensional space inside the mouth. For many patients in North Austin, a narrow dental arch can create tooth crowding. When teeth are crowded inward, your tongue is forced to rest against the lingual gingiva. This constant, low pressure exerted on the gums can lead to gum recession, resulting in exposure of the roots of the teeth, which are difficult to treat with standard gum grafts.
Saliva is the most powerful defense for the mouth against bacteria [2] (Vila et al., 2019); however, it can only protect what it is able to reach. Narrow, crowded mouths create places where saliva is unable to reach. The American Dental Association recognizes that in areas of reduced salivary flow, bacterial colonization of the mouth is increased due to reduced bacterial clearance [3] (Dawes, 2008). These stagnant areas create ideal conditions for S. mutans, which is the primary cause of gum inflammation and cavities. Expanding the dental arch allows for:
Feature | Invisalign | Traditional Braces | Lingual Gum Grafts |
Goal | Increasing Oral Volume | Teeth Straightening | Cover Exposed Roots |
Relief of Tongue Pressure | High | Low | None |
Impact to Salivary Flow | Significant Improvement | Neutral (may trap plaque) | Neutral |
Avg. Cost | ~$5,500 | $4,000 to $6,000 | ~$1,500 per graft |
At Enamel Dentistry The Domain, our team believes that functional oral health should be accessible. The average cost for Invisalign dental arch expansion in North Austin is ~$5,500. Since this treatment is medically indicated to prevent lingual recession and bone loss, it has a high return on investment in your health.
Our office is conveniently located near Black Rose and Domain Northside, allowing you to easily fit appointments into your workday. We accept most PPO insurances and offer flexible financing options for your remaining out-of-pocket costs. For patients working at tech hubs such as Amazon or Facebook, we help maximize your HSA/FSA funds to cover the cost of your treatment with pre-tax dollars.
Yes. A narrow dental arch can cause the tongue to constantly press against the back of your teeth. This resting pressure mechanically pushes on the gum tissue, leading to lingual gum recession.
Yes. By increasing the intraoral volume of the mouth, salivary flow increases, allowing your mouth to naturally flush out halitosis-causing bacteria more effectively.
No. Most patients report feeling mild pressure during Invisalign arch expansion. Invisalign uses a constant, low pressure to slowly move the teeth. Making it more comfortable than traditional metal braces, which use high-pressure tightening to move the teeth.
Dr. Devish Patel, DDS, provides comprehensive general and cosmetic dentistry at Enamel Dentistry in Austin, TX. With a focus on modern clinical care, he specializes in aesthetic treatments, alongside preventative and restorative maintenance. Dr. Patel is committed to delivering safe, evidence-based solutions that keep patients comfortable and informed at every step.
[1] Ma, S., & Wang, Y. (2023). Clinical outcomes of arch expansion with Invisalign: a systematic review. BMC oral health, 23(1), 587. https://doi.org/10.1186/s12903-023-03302-6
[2] Vila, T., Rizk, A. M., Sultan, A. S., & Jabra-Rizk, M. A. (2019). The power of saliva: Antimicrobial and beyond. PLoS pathogens, 15(11), e1008058. https://doi.org/10.1371/journal.ppat.1008058
[3] Dawes, C. (2008). Salivary flow patterns and the health of hard and soft oral tissues. The Journal of the American Dental Association, 139, 18S24S. https://doi.org/10.14219/jada.archive.2008.0351
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