Safe Treatment Water Means Safe Dental Care


A plasma-based water management solution that blocks bacteria and biofilm — without chemicals.

Plasma Dental Water System


Plasma Dental Water System

The DENTOZONE Plasma Dental Water System is an advanced device developed from disinfected drinking-water technology originally designed for astronauts.

Using the natural salts contained in water, the system applies electrical energy to generate plasma. This process produces reactive oxygen species (OH radicals, ozone, and hydrogen peroxide) that provide powerful antimicrobial action, creating plasma-activated, disinfected water without the need for chemical disinfectants.
Built on space-proven disinfection technology, the system is optimized for dental unit environments, safely preventing bacterial growth and biofilm formation inside waterlines — without any chemical agents.


No Chemical, No Biofilm, No Bacteria

With DENTOZONE Plasma Technology,safe and effective dental water management is now a reality.

The Global Spotlight on Dental Water Quality


The issue of dental treatment water is not new — 
but it’s more critical than ever.

The problem of dental unit water quality has only recently begun to receive proper attention.
Although the topic was first mentioned in dental academia in the early 1960s,it remained largely overlooked for decades.

Then, in the 1990s, a tragic incident in the United States —the death of a dentist due to Legionella infection traced back to a dental unit —
brought the issue to global attention.It became clear that this was not a minor hygiene concern,but a matter of patient and practitioner safety.

Following the incident, the American Dental Association (ADA) and the Centers for Disease Control and Prevention (CDC)
established official dental water quality standards, setting a global precedent for dental infection control.

Key Timeline of Dental Water Issues


  • 1963: First report of contaminated water inside a dental unit (Dr. Blake, UK)
  • 1990: Report of Legionella contamination in dental unit waterlines
  • 1995: ADA announces dental water quality guideline (recommended ≤200 CFU/mL)
  • 1997: U.S. dentist dies from Legionella infection linked to a dental unit
  • 2003: CDC recommends applying EPA drinking water standards (≤500 CFU/mL) for dental water

Media Coverage


  • ABC 20/20 (U.S., 2000) — reported on the bacterial risks of dental treatment water
    (THE DENTAL UNIT WATERLINE CONTROVERSY: DEFUSING THE MYTHS, DEFINING THE SOLUTIONS, JADA, Vol. 131, October 2000 1427)
  • JTBC (Korea, 2014) — highlighted the hygiene status of dental treatment water in Korea

Global Dental Water Quality Standards


Global Dental Water Quality Standards

Country / Region

Standard (CFU/mL)

Notes

U.S. (CDC)

≤ 500

General dental water standard

EU, Japan

≤ 100

Recommended at drinking-water level

Korea

No clear numerical standard

Voluntary management level

  • In the U.S., the bacterial count in dental treatment water is regulated to below 500 CFU/mL, while countries such as Germany and Japan enforce drinking-water level standards (below 100 CFU/mL). 
  • In Korea, a drinking-water standard (below 100 CFU/mL) is recommended for dental treatment water, but there are no legally defined regulations yet, and in some cases, disinfectants are overused. 
  • Disinfection methods using chlorine or sodium hypochlorite carry the risk of residual chlorine remaining in the water, which may be absorbed into the patient’s oral cavity.

Water Quality Standards for Dental Treatment Water in Korea


Dental Water Quality Standards in Korea

In Korea, there are still no legally binding regulations specifying the bacterial count standards for dental treatment water.
However, various recommendations, guidelines, and accreditation criteria exist and are commonly used as de facto references within the dental industry.

 1. Legal Regulations (Current Laws)

At present, there are no legally mandated water quality standards equivalent to drinking water for dental unit chair treatment water in Korea.In other words, there are no direct clauses addressing dental treatment water under the Medical Service Act, Medical Technicians Act, or Drinking Water Sanitation Act. 

However, several indirectly related regulations apply as follows:


🔹 Infectious Disease Control and Prevention Act

  • Medical institutions are required to take measures to prevent healthcare-associated infections (Article 11).
  • The detailed guidelines under this law mention the need for waterline control.

🔹 Ministry of Environment Drinking Water Standards

  • Drinking Water Quality Standard: General bacteria ≤100 CFU/mL.
  • Although dental treatment water is not classified as drinking water, many institutions adopt this standard as a recommended guideline.

 2. Recommendation by the Korean Dental Association (KDA)

The Korean Dental Association (KDA) recommends the following as part of its infection control program for dental clinics:
For routine (non-surgical) dental procedures, it is recommended to use water that meets the Ministry of Environment’s drinking water quality standards.


🔹 Ministry of Environment Drinking Water Standards:

  • General bacteria ≤100 CFU/mL
  • Total coliforms: Not detected
  • Residual chlorine ≤4.0 mg/L (based on tap water standards)

In other words, according to the KDA’s recommendation, dental treatment water should effectively meet drinking water standards.


 3. Dental Infection Control Evaluation (Korea Institute for Healthcare Accreditation, Ministry of Health and Welfare)

In the healthcare accreditation and evaluation process, the infection control section includes the following item: 
“Is the dental unit chair waterline managed to ensure that treatment water does not cause patient infection?”


Evaluation items include:

  • Monitoring and control of bacterial counts
  • Regular cleaning and disinfection records of waterlines
  • Availability of water quality test reports when necessary

These evaluation standards serve as de facto quality control criteria for dental waterline safety.


 4. Examples of Authorized Testing Institutions

Commonly referenced water testing institutions for dental clinics in Korea include:


  • Korea Conformity Laboratories (KCL)
  • Designated testing institutions approved by the Ministry of Food and Drug Safety in Korea
  • Regional Public Health and Environment Research Institutes

Water quality reports issued by these institutions are widely used as official evidence in managing dental treatment water safety.

DENTOZONE Plasma System

 DENTOZONE Plasma Dental System 


DENTOZONE Plasma System


  • DENTOZONE has developed a system that disinfects dental treatment water safely, without the use of chemical disinfectants.
  •  Using plasma electrolysis technology, it generates OH radicals within the water, which produce strong oxidative reactions that effectively eliminate bacteria.
  • The disinfection principle is based on technology originally developed for astronauts’ drinking water, ensuring proven safety.

Sterilization principle

The DENTOZONE Plasma System utilizes the 10–250 ppm of natural salts present in the supplied water, applying electrical energy to generate plasma-activated, disinfected water without the use of chemical disinfectants. 
This process leaves no residue, odor, or harmful substances, ensuring complete safety for both patients and practitioners.

Making sterilizing power material by natural


What is Plasma System?

H₂O + Natural Salt (10~250 ppm)
→ HOCl (Hypochlorite), H₂O₂, O₃ ...


All natural water contains trace quantities of salts in solution. Potable water supplies generally

contain chloride salts in concentrations of 10 to 250 ppm. Cl⁻ ions in the water will oxidize at the anode to produce Cl₂, initiating this series of reactions:


Cl⁻ + OH⁻ — 2e⁻ → HOCl

The Challenge and Achievement Toward ‘Zero (0) CFU/mL’

The American Dental Association (ADA) recommends maintaining dental treatment water at 200 CFU/mL or below,

while in Korea, the drinking water standard of 100 CFU/mL or below is generally applied. 

However, in practice, very few systems consistently meet these standards.Most clinics rely on temporary chemical disinfection methods as a stopgap solution.


DENTOZONE’s Plasma Dental Water Control System takes a different approach.

It guarantees water quality that meets the Korean drinking water standard of 100 CFU/mL or below,

And in practice, 
it delivers treatment water disinfected to 
near-zero CFU/mL levels.

NO Chemical

No Biofilm

No Bacteria

Why Leading University and General Hospitals Choose DENTOZONE

This system has been installed and successfully resolving water quality issues in major university and general hospitals across Korea, including Kyung Hee University Hospital, Chonnam National University Hospital, and Wonkwang University Hospital, as well as Samsung Medical Center, Asan Medical Center, Korea Veterans Hospital, and the National Medical Center.

Samsung 
Medical Center

At Samsung Medical Center, serious concerns over dental unit water quality were resolved through the DENTOZONE Plasma System,and the results were later published as an academic paper by Seoul National University. Moreover, Chulalongkorn University, Thailand’s leading national university, adopted the DENTOZONE system to address its water quality challenges.The outcome was published in the International Journal of Dentistry (Hindawi), earning global recognition for the system’s technological excellence.

Chulalongkorn University

In 2023, Chulalongkorn University, Thailand’s top national university, conducted a highly significant and insightful study involving dentists and dental hygienists. The focus of this research was the bacterial content in aerosols generated from dental unit chairs — comparing units that used ordinary treatment water with those equipped with the DENTOZONE Plasma Dental Water System (DPS2). The results were remarkable.

  • In dental units using ordinary treatment water, aerosols contained as many as 140,000–280,000 CFU/mL of bacteria.
  • In contrast, units using the DENTOZONE Plasma System (DPS) showed only 470–1,200 CFU/mL, demonstrating a 99.6% reduction in bacterial levels. 

These findings are especially meaningful when considering the potential impact of aerosols on the respiratory health of clinical staff, highlighting the crucial role of DENTOZONE’s plasma technology in infection prevention and creating safer dental environments.

No Chemical. No Biofilm. No Bacteria.

DENTOZONE has always had a clear vision for what treatment water should be.

No Chemical

No Biofilm

No Bacteria

Product Lineup for Various Clinical Environments

Comparison
DENTOZONE Plasma System vs. Chlorine Dilution Method

Test Reports and Scientific Evidence

After applying the DENTOZONE system, bacterial counts in the waterlines were measured at 0–10 CFU/mL.

The system has been tested and verified by domestic and international institutions. 

Summaries of related research papers and experimental reports are available for reference.

 Dentozone is not just a company that makes products. 


"The water that touches the patient's mouth is directly related to life" A research company specializing in dental water quality management with faith, It's a lab of practice.

No Chemical / No Biofilm / No Bacteria Until the day this philosophy is realized to all dentists, Dentozon's dental lab contemplates, experiments, and improves again today.