Modern ozone therapy has become one of the most versatile adjunctive technologies in dentistry. Ozone can be delivered as gaseous ozone, ozonated water, ozonated oils, or ozone-infused materials depending on the clinical indication.
Its therapeutic value primarily comes from:
Broad-spectrum antimicrobial activity
Biofilm disruption
Oxidative inactivation of microorganisms
Support of wound healing
Modulation of inflammatory responses
Reduction of microbial contamination
Because of these properties, ozone has been investigated across nearly every specialty of dentistry. However, clinical protocols and evidence quality are still evolving, and ozone is generally recommended as an adjunct—not a replacement—for established treatments.
This is among the most extensively studied applications.
Ozone may help reduce cariogenic bacteria in non-cavitated lesions and is commonly paired with remineralizing agents such as fluoride or calcium-phosphate products.
Potential benefits:
Reduction of cariogenic bacteria
Promotion of remineralization
Arrest of early lesions
Preservation of healthy tooth structure
Especially common after orthodontic treatment.
Possible applications:
Reduction of bacterial contamination
Support of remineralization
Improvement of enamel recovery
Before placing sealants ozone has been investigated for:
Surface disinfection
Reduction of bacterial load
Improved preventive outcomes
Examples include:
Xerostomia
Elderly patients
Medically compromised patients
Orthodontic patients
Ozone may be incorporated into preventive protocols.
Modern dentistry emphasizes preserving healthy tooth structure.
Ozone supports:
Conservative cavity management
Selective caries removal
Preservation of pulp vitality
Reduced need for aggressive excavation in selected cases
Investigated uses include:
Cavity disinfection
Reduction of residual bacteria
Improved cleanliness of prepared cavities
Some studies suggest that application timing matters because residual oxidation may affect adhesive bond strength if not properly managed.
Potential uses:
Reduction of bacterial contamination
Pulp protection
Indirect pulp treatment
Especially beneficial for:
Geriatric patients
Exposed root surfaces
Xerostomic patients
One of the fastest-growing areas.
Benefits include:
No drilling in selected early lesions
Minimal discomfort
Reduced anxiety
Improved child cooperation
Applications:
Early childhood caries
White spot lesions
Primary teeth
Preventive care
High-risk pediatric patients
Among the most researched specialties.
Objectives include reducing microorganisms within the complex root canal system alongside standard irrigation and instrumentation.
Ozonated water has been studied as an irrigant.
Potential benefits:
Reduction of bacterial load
Cleaning accessory canals
Reduction of biofilm
Can penetrate areas difficult to instrument.
Investigated against:
Enterococcus faecalis
Anaerobic bacteria
Persistent infections
May help reduce microbial contamination in previously treated canals.
Used as an adjunct during:
Root canal treatment
Apical surgery
Persistent infections
One of the strongest clinical applications.
Ozone has been investigated as an adjunct to:
Scaling
Root planing
Periodontal maintenance
Possible benefits:
Reduced plaque bacteria
Reduced bleeding
Reduced inflammation
Adjunctive ozone may help:
Lower periodontal pathogens
Improve pocket healing
Enhance tissue response
Investigated because of its broad antimicrobial activity.
Ozonated water can be used during maintenance appointments.
Used during recall visits to assist in biofilm control.
Widely investigated.
Applications include:
Tooth extractions
Third molar surgery
Apicoectomy
Soft tissue surgery
Goals:
Lower microbial contamination
Support wound healing
Reduce postoperative discomfort
An increasingly important area.
Possible uses:
Site decontamination
Surgical irrigation
Soft tissue management
Investigated for reducing bacterial contamination before placement.
Adjunctive ozone may assist in reducing inflammation and microbial load.
May be incorporated into nonsurgical or surgical decontamination protocols.
Ozone has been studied for several mucosal conditions.
Examples include:
Aphthous ulcers
Traumatic ulcers
Oral mucositis
Lichen planus (adjunctive use)
Oral candidiasis (investigational)
Potential effects:
Pain reduction
Improved healing
Reduced microbial burden
Often overlooked.
Applications include:
Useful against:
Candida species
Denture plaque
Biofilm
Adjunctive management with:
Ozonated water
Ozonated oils
Ozone gas
Can be used for:
Removable prostheses
Night guards
Occlusal splints
Growing interest.
Applications:
White spot lesion prevention
Bracket area disinfection
Plaque control
Gingival health during orthodontics
Indirect application.
Used for:
Sensor disinfection
Protective barriers
Infection control protocols
One of the easiest applications.
Uses include:
Professional prophylaxis
Ozonated water irrigation
Biofilm reduction
Periodontal maintenance
Halitosis management
Since halitosis is commonly associated with anaerobic bacteria, ozone has been investigated to:
Reduce volatile sulfur compound–producing microorganisms
Improve oral freshness
Reduce tongue biofilm
Emerging applications include:
Ozone injections into the temporomandibular joint (performed only by trained clinicians)
Pain reduction
Improvement of joint function
Evidence is still developing.
Applications include:
Avulsed teeth
Luxation injuries
Soft tissue injuries
Lacerations
Potential goals:
Reduce microbial contamination
Support soft tissue healing
General uses include:
Operatory irrigation
Surgical field disinfection
Aerosol reduction strategies
Dental unit waterline management
Instrument decontamination (where compatible)
Patients who may benefit from adjunctive ozone protocols include:
Diabetic patients
Immunocompromised patients
Elderly patients
Patients undergoing chemotherapy or radiotherapy
Xerostomic patients
Patients with limited manual dexterity
Treatment should always be individualized.
Investigated uses include:
Tooth whitening protocols
Reduction of post-bleaching sensitivity
Smile rehabilitation support
Evidence is limited compared with conventional whitening methods.
An emerging research area.
Ozone is being explored for potential roles in:
Tissue engineering
Bone regeneration
Platelet-rich fibrin protocols
Guided tissue regeneration
Soft tissue regeneration
These applications remain investigational.