Last Updated on 1 month ago by prebeau

Article supervised by: Dr. Kuniyasu Mori (毛利 国安)

If you are looking for an English speaking dentist in Tokyo to treat unsightly white marks on your teeth, you may have discovered that many clinics still rely on traditional drilling. At PreBeau Oral Care in Akasaka, we specialize in a completely non-invasive, zero-drilling approach to restore your natural smile.

What Are White Spot Lesions?

White spot lesions (WSLs) are opaque, chalky-white discolorations on the surface of your teeth. These marks occur when the enamel—the hard, protective outer layer of the tooth—loses vital minerals like calcium and phosphate. This demineralization alters the way light reflects off the tooth, making the affected areas stand out starkly against the surrounding healthy, translucent enamel.

Common Causes of White Spot Lesions

Understanding the root cause is the first step toward effective and targeted treatment. The most frequent culprits include:

• Post-Orthodontic Treatment: Plaque often accumulates around braces. When the brackets are removed, decalcified white spots are frequently left behind on the previously covered enamel.
• Post-Whitening: While professional teeth whitening is safe, it can sometimes temporarily dehydrate the teeth, making underlying, previously unnoticed white spots more prominent.
• Enamel Hypoplasia: Sometimes, adult teeth erupt with these spots already present due to developmental interruptions during childhood, leading to underdeveloped enamel.
• Fluorosis: Excessive fluoride intake while adult teeth are still forming beneath the gums can lead to fluorosis, which manifests as stark white mottling on the enamel.

Our Approach: The Zero-Drilling Philosophy

Our clinical philosophy is strictly centered on preserving your natural tooth structure. Traditionally, treating severe white spots meant irreversibly drilling away the discolored enamel to place a composite resin or ceramic veneer.

Instead, we utilize Icon Resin Infiltration, a revolutionary micro-invasive treatment that requires absolutely no drilling and no local anesthesia. As a Certified Public Instructor and Key Opinion Leader for DMG (the manufacturer of Icon) and Yoshida (the official distributor), Dr. Kuniyasu Mori ensures that our clinic provides the highest standard of evidence-based, minimally invasive care in Japan.

Important Note on Brown Spot Lesions: If your lesions have progressed to a brownish tint, a single-step infiltration is not sufficient. Brown spots require a dual-protocol approach, carefully combining professional teeth whitening with the resin infiltration treatment to achieve a seamless, natural color match.

How Icon Resin Infiltration Works (Treatment Flow)

The following treatment flow is typically completed in a single visit, providing immediate aesthetic improvements while preserving your healthy tooth structure.

• Step 1: Comprehensive Assessment We evaluate the depth, size, and cause of the white spots. Our staff ensures you fully understand the diagnosis and the expected outcome before any procedure begins.
• Step 2: Surface Preparation The affected tooth is isolated to keep it completely dry and clean. We then apply a specialized 15% hydrochloric acid etching gel. This crucial step opens the microscopic pores of the demineralized enamel, safely removing the pseudo-intact surface layer that blocks treatment.
• Step 3: Drying the Lesion We apply a high-grade ethanol solution to draw out any remaining moisture from the micropores of the tooth. If the white spot visually disappears at this stage, it serves as a clinical confirmation that the final resin application will be highly successful.
• Step 4: Resin Infiltration The highly fluid Icon infiltrant resin is applied directly to the prepared tooth. Driven by capillary action, the resin penetrates deep into the porous enamel matrix, effectively filling the microscopic voids left by mineral loss and blocking damaging acids.
• Step 5: Light Curing and Polishing The resin is cured and hardened using a specialized dental light. Finally, the tooth is meticulously polished to a high gloss, perfectly matching the natural light-reflecting properties and texture of your surrounding enamel.

Why Choose PreBeau Oral Care?

Finding a trusted, English speaking dentist in Tokyo can be challenging, especially for highly specialized cosmetic and preventive procedures.

Dr. Kuniyasu Mori (Englsih speaking dentist in Tokyo)brings extensive international training and academic excellence to your care. Holding a Doctor of Dental Surgery degree from Osaka University, alongside advanced post-doctoral training in periodontics at the University of Michigan and clinical implant residency at UCLA, Dr. Mori combines global techniques with meticulous Japanese precision.

Clinic Information

To schedule a consultation or learn more about our treatments, please contact us or visit our clinic English page.

• Clinic Name: PreBeau Oral Care (プレビュー・オーラル・ケア)
• Address: Urbane Akasaka 5F #501, 3-15-5 Akasaka, Minato City, Tokyo 107-0052
• Phone: 03-6821-7481
• Website: https://prebeau-oc.com/
• English Services Information: Click here for our English Guide
• Google Maps & Reviews: Visit our Google Business Profile
  
  
  Scientific Evidence & References At PreBeau Oral Care, our zero-drilling philosophy is strictly evidence-based. As an official Key Opinion Leader and certified public instructor for DMG and Yoshida, Clinic Director Dr. Kuniyasu Mori actively contributes to the clinical advancement of micro-invasive dentistry in Japan.
• Below is Dr. Mori’s official clinical publication (published in Japanese), followed by key peer-reviewed studies validating our approach to white and brown spot lesions:
• Clinical Protocol and Case Reports by Dr. Kuniyasu Mori Icon（アイコン）を用いた初期う蝕およびホワイトスポットの低侵襲治療 (毛利国安, 株式会社ヨシダ 学術記事)
• The Foundation of Resin Infiltration and Optical Masking Masking of labial enamel white spot lesions by resin infiltration (Paris S., Meyer-Lueckel H., Quintessence International, 2009)
• Treating Post-Orthodontic White Spots Minimally invasive resin infiltration of arrested white-spot lesions: A randomized clinical trial (Journal of the American Dental Association, 2013)
• The Efficacy of 15% Hydrochloric Acid Etching Surface conditioning of natural enamel caries lesions in vivo using 15% hydrochloric acid gel (Paris S., et al., Journal of Dentistry, 2010)
• Dual-Protocol for Brown Spots and Deep Discoloration Masking of enamel caries lesions by resin infiltration and combinations with bleaching (Borges A.B., et al., Operative Dentistry, 2014)
• Treating Developmental Defects (Fluorosis and Hypoplasia) Resin infiltration for aesthetic improvement of mild to moderate fluorosis: A clinical report (Muñoz M.A., et al., Restorative Dentistry, 2013)