Last Updated on 4 weeks ago by prebeau

Navigating healthcare in a foreign country can be challenging, especially when trying to express specific dental concerns. As a native English speaker educated at the University of Washington, Osaka University, the University of Michigan, and UCLA, I understand the critical importance of clear communication in medical care. At PreBeau Oral Care in Akasaka, you can discuss your treatment in English, exactly as you would in your home country, ensuring nothing gets lost in translation.

Preserving your natural teeth is our core clinical philosophy. Historically, fixing cosmetic issues often required drilling away healthy tooth structure. We focus on minimal intervention and “no-drill” dentistry to help patients restore their smiles while maintaining their natural enamel.

Today, I would like to introduce one of our most requested procedures: No-Drill White Spot Treatment.

What Are White Spots?

In dentistry, these are referred to as “white spot lesions.” They appear as opaque, chalky marks on the teeth and are typically caused by:

• Decalcification following the removal of orthodontic braces
• Fluorosis (excessive fluoride exposure during tooth development)
• Early stages of enamel demineralization

Previously, treating these spots meant drilling the affected area and covering it with composite resin or a veneer. Today, we utilize a more conservative, evidence-based approach.

The Icon Resin Infiltration System

We treat these lesions using the Icon Resin Infiltration method—a procedure that requires no drilling and no injections.

Instead of removing the tooth surface, we apply a specialized etching agent (using hydrochloric acid) that gently opens the microscopic pores of the white spot lesion. We then apply a fluid, light-curing resin that penetrates deeply into this porous enamel. Once cured, the resin mimics the optical properties of your natural tooth, making the white spot blend seamlessly with the surrounding enamel. The entire process is typically completed in a single visit.

Global Clinical Expertise

I am deeply committed to this specific conservative treatment. I serve as an Official Instructor and the Asia-Pacific Key Opinion Leader (KOL) for DMG and Yoshida, the manufacturers of the Icon system. I regularly travel internationally to lecture and train other dental professionals on this exact protocol. When you visit our clinic, you are receiving treatment directly from an established instructor in the field.

You do not have to accept white spots, nor do you have to drill them away. I would be glad to help you restore your natural smile here in the heart of Tokyo.

Sincerely, Dr. Kuniyasu Mori (毛利国安)

Clinic Information & Reviews PreBeau Oral Care on Google Maps (Akasaka, Minato-ku) Urbane Akasaka 5F (Room 501), 3-15-5 Akasaka, Minato-ku, Tokyo Tel: 03-6821-7481

Consultations, Pricing, and Appointments For detailed information regarding our treatment fees (pricing), available services, and how to contact us or book an appointment, please visit our dedicated page for international patients: English Support, Pricing, and Contact Information

References & Clinical Evidence

■ Clinical Expertise & Primary Source by the Author

• Mori, K. Clinical Application of Resin Infiltration (Icon) and Minimally Invasive Approaches. Yoshida Dental Academic Information. (Clinical commentary and protocol breakdown authored by Dr. Kuniyasu Mori, verifying his status as an Official Instructor and KOL for the Icon system.)

■ Efficacy on Post-Orthodontic White Spots (Decalcification)

• Senestraro, S. V., et al. (2013). Minimally invasive resin infiltration of arrested white-spot lesions: a randomized clinical trial. (A randomized clinical trial published in The Journal of the American Dental Association demonstrating the effectiveness of resin infiltration for white spots developed after braces.)

■ The Importance of Hydrochloric Acid Etching (Protocol Foundation)

• Meyer-Lueckel, H., Paris, S., & Kielbassa, A. M. (2007). Surface layer erosion of natural caries lesions with phosphoric and hydrochloric acid gels in preparation for resin infiltration. (Fundamental research by the developers of Icon, proving that etching with hydrochloric acid—rather than standard phosphoric acid—is essential for effectively opening the microscopic pores of white spot lesions.)

■ Treatment Efficacy for Dental Fluorosis

• Resin Infiltration in Dental Fluorosis Treatment-1-Year Follow-Up (2020). (A clinical study validating the long-term aesthetic improvement and stability of resin infiltration specifically for white spots caused by fluorosis.)

■ Highest Level of Evidence (Umbrella Review)

• EFFECTIVENESS OF RESIN INFILTRATION IN CARIES INHIBITION AND AESTHETIC APPEARANCE IMPROVEMENT OF WHITE-SPOT LESIONS: AN UMBRELLA REVIEW (2022). (A comprehensive umbrella review synthesizing multiple systematic reviews, providing the highest level of scientific evidence for the aesthetic success of the “no-drill” resin infiltration approach.)