In most cases, no. Because we only remove a microscopic amount of the outer enamel, the insulating layer of the tooth remains thick enough to protect the nerve.
Interproximal reduction (IPR) is a clinical orthodontic procedure that involves the precise removal of a microscopic layer of enamel from the sides of specific teeth to create space for Invisalign alignment. Medical evidence suggests that IPR is used when space gain is needed to address tooth size discrepancies [1] (Dahhas et al., 2024). This safe, painless technique allows crowded teeth to shift into optimal positions without the need for traditional tooth extractions. Our team at Enamel Dentistry Manor near Whisper Valley explains IPR and the alternative to traditional extractions.
Many patients hear the word shaving and worry their teeth may be significantly weakened. . However, there is a notable biological difference between Interproximal Reduction for Invisalign and the prep required for porcelain veneers. Medical literature supports that minor reshaping and IPR preserving tooth structure can be an aid in achieving aesthetic results [2] (Bamashmous et al., 2018). In traditional restorative dentistry, a dentist might remove approximately 1.0mm or more of enamel to make room for a veneer. With IPR at Enamel Dentistry, we are dealing with micron units of measurement that are nearly invisible to the naked eye. We typically remove only 0.2mm to 0.3mm of the outer enamel. Essentially, this process is a high-precision polish that preserves your tooth’s natural shape.
In the past, the only way to fix severe crowding was to perform extractions, which involved pulling perfectly healthy premolars to create space. For patients in Manor, this traditional method can sometimes be too invasive. By minimally trimming the teeth, we can often avoid the trauma of oral surgery and the bone loss that follows a tooth extraction. This keeps your full set of teeth intact and maintains your natural facial profile. For Whisper Valley families looking for the most conservative path to a straight smile, IPR is great for preserving your natural anatomy.
Below is a table comparing methods to create space in the oral cavity
Feature | IPR | Tooth extractions | Arch expansion |
Invasiveness | Very low | High | Moderate |
Pain level | Minimal | Moderate | Pressure/aches |
Enamel impact | Micro-polishing | Full tooth loss | None |
Time to result | Immediate | 1-2 weeks of healing | Months |
Best for… | Mild or moderate crowding | Severe overcrowding | Narrow plates |
The IPR process is a combination of AI-assisted data and manual artistry. Before our team begins, our iTero 5D scanners create a digital blueprint of your mouth. The software calculates the exact points at which your teeth overlap. To create space, our team uses specialized, ultra-thin diamond-coated strips. These strips glide between the teeth to remove the exact amount of enamel required. This mechanical precision ensures that your Invisalign trays fit perfectly. Because the strips only target the contact points, the visible front of your tooth remains completely untouched, keeping your smile looking natural.
Clinical evidence supports that interdental enamel reduction does not result in increased caries risk [3] (Zachrisson et al., 2011). The most common fear for patients is whether removing enamel makes a tooth weaker. Clinical studies and decades of orthodontic research show that IPR does not increase your risk of tooth decay or cold sensitivity. The average person has approximately 2.5mm of enamel thickness on the sides of their teeth. Since IPR only removes about 0.2mm, the protective barrier remains fully functional. Furthermore, once the teeth are straightened, they are easier to clean. By removing the plaque created by overlapping teeth, IPR can actually lower your long-term risk of gum disease.
The thought of removing enamel is often worse than the reality. Here is exactly what happens during an IPR session at our office near Whisper Valley:
In most cases, no. Because we only remove a microscopic amount of the outer enamel, the insulating layer of the tooth remains thick enough to protect the nerve.
The spaces created are usually no wider than a piece of thick dental floss. These tiny gaps are temporary. The Invisalign trays are specifically designed to close these spaces within a few weeks as your teeth move into their straight positions.
Our Manor team performs a thorough clinical exam and X-ray review before recommending IPR. If your enamel is naturally thin or compromised, we may opt for other methods to ensure your teeth stay strong.
Dr. Hardik Chodavadia, DDS, provides comprehensive general and cosmetic dentistry at Enamel Dentistry in Austin, TX. With extensive clinical experience, he specializes in preventive care, gum health, restorative dentistry, and minimally invasive aesthetic treatments. He is committed to delivering safe, evidence-based solutions that keep patients comfortable and informed at every step.
[1] Dahhas FY, Almutairi NS, Almutairi RS, et al. The Role of Interproximal Reduction (IPR) in Clear Aligner Therapy: A Critical Analysis of Indications, Techniques, and Outcomes. Cureus. 2024;16(3):e56644. Published 2024 Mar 21. doi:10.7759/cureus.56644
[2] Bamashmous MS. Veneer or Interproximal Enamel Reduction?. J Contemp Dent Pract. 2018;19(6):749-751. Published 2018 Jun 1.
[3] Zachrisson BU, Minster L, Ogaard B, Birkhed D. Dental health assessed after interproximal enamel reduction: caries risk in posterior teeth. Am J Orthod Dentofacial Orthop. 2011;139(1):90-98. doi:10.1016/j.ajodo.2010.09.002
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