Cold light whitening is a technology widely used in the field of dental beauty. It can effectively remove pigment deposits on the tooth surface and improve tooth brightness through the synergistic effect of light of specific wavelengths and whitening agents. However, despite the high popularity of this technology, cold light whitening is not suitable for all people. If individuals with certain physical conditions or oral conditions undergo whitening without evaluation, it may cause adverse reactions or affect the treatment effect. This article will focus on the mechanism, indications and contraindications of cold light whitening and its related precautions , and provide scientific guidance for clinicians and consumers.
1. The basic principle of cold light whitening
Cold light whitening mainly relies on whitening agents containing peroxide ingredients (such as hydrogen peroxide or carbamide peroxide), which produce oxygen free radicals under the irradiation of cold light of a specific wavelength. These free radicals can decompose the colored molecules on the surface of the teeth, thereby achieving the effect of removing stains and whitening. Because a low-heat energy light source is used, damage to the pulp tissue due to high temperature is avoided, so it is called "cold light" whitening.
2. Applicable conditions for cold light whitening
People who are suitable for cold light whitening usually meet the following conditions:
① Pigmentation deposition on the tooth surface caused by external factors (such as coffee, tobacco, and tea stains);
② No obvious dental caries, enamel defects, periodontitis or other oral diseases;
③. The teeth are generally healthy and have no history of allergies.
3. People and reasons for cold light whitening taboos
Although cold light whitening technology is relatively safe, the following people should carefully consider or avoid this project:
Patients with tooth sensitivity
The active ingredients of whitening agents may aggravate dentin sensitivity, causing obvious discomfort when exposed to cold or hot stimulation. When allergic patients use cold light whitening, it may cause tooth pain and soreness, affecting their daily diet and quality of life.
Pregnant and lactating women
Although the absorption of topical whitening agents is low, pregnant and breastfeeding women should be cautious about any drugs and chemical ingredients to avoid potential risks.
Minors
Since the deciduous teeth and permanent teeth have just completed their development, the enamel is relatively weak and active, and cold light whitening may affect the tooth structure. Therefore, it is not recommended for teenagers under the age of 18 to undergo this project.
Patients with gingivitis and periodontal disease
In cases of active gum inflammation or periodontal disease, the gum tissue is sensitive and bleeds easily, and whitening agents may increase inflammation, cause discomfort, or delay the effectiveness of treatment.
People with open wounds or ulcers in the mouth
When the oral mucosa is damaged, whitening agents and light may irritate the wound, causing pain or risk of infection.
People with caries or enamel defects
Whitening agents may penetrate into the dentin in areas of caries or enamel defects, causing irritation and pain, and affecting treatment tolerance.
Area covered by dental restorations
Cold light whitening has no obvious whitening effect on dentures, porcelain veneers, resin fillings, etc., and may cause uneven color, so it is not suitable for use in the restoration area.
People who are allergic to peroxide ingredients
If the hydrogen peroxide ingredient commonly used in whitening agents causes an allergic reaction, it should be avoided.
Patients with severe systemic diseases
Patients with chronic diseases such as heart disease, diabetes, etc., especially those whose conditions are not stable, should carefully choose whether to whiten their skin under the guidance of a doctor.
4. Risks and adverse reactions of contraindicated populations
Cold light whitening in people with contraindications may cause the following adverse reactions:
Increased tooth sensitivity
People with exposed dentin or weak enamel often experience short-term or persistent sensitivity and pain after whitening.
Soft tissue irritation or inflammation
Whitening agents coming into contact with the gums or oral mucosa may cause burning, redness, swelling, or ulcers.
Uneven color
The color contrast between dental restorations and natural teeth is obvious, which affects the appearance.
Psychological anxiety and discomfort
When adverse reactions occur after surgery, patients may experience anxiety, which affects their quality of life.
5. Alternative suggestions for people with contraindications
For people with contraindications, the following alternatives can be considered:
Teeth cleaning and care
Have professional teeth cleaning regularly to remove tartar and surface pigments and maintain oral health.
Use low-concentration whitening toothpaste or care products
Choose a whitening product suitable for sensitive teeth to gradually reduce pigmentation.
Improve your lifestyle
Control the intake of pigments in your diet, quit smoking and drinking tea, and avoid tooth staining.
Minimally invasive adjustments under the guidance of a dentist
If necessary, other dental cosmetic methods can be used to meet the patient's needs.
6. The importance of doctor-patient communication
In clinical practice, adequate communication between doctors and patients is crucial to the formulation and implementation of cold light whitening treatment plans:
Learn more about the patient's medical history and oral condition
Including history of allergies, systemic diseases, tooth sensitivity, etc., to avoid blind operations.
Clearly indicate the risks before surgery
Helping patients understand the scope of treatment and possible adverse reactions can help establish reasonable expectations.
Postoperative precautions
Including dietary taboos, oral hygiene management, sensitivity response measures, etc. to promote recovery.
Beauty Encyclopedia Tips:
Cold light whitening technology has wide application value in improving the beauty of teeth, but it is not suitable for all people. People with tooth sensitivity, oral inflammation, minors or special physiological conditions should choose or avoid this treatment with caution. It is recommended to conduct a comprehensive evaluation under the guidance of a professional dentist and develop a scientific treatment plan based on individual oral health conditions to ensure safety and effectiveness. At the same time, maintaining good oral hygiene and healthy living habits is also an important guarantee for maintaining the effect of tooth whitening.