16 Nov
Many people may wonder why their teeth become more yellow over time. When searching for information, they often come across recommendations to whiten their teeth if they want to restore their natural whiteness. So, what is teeth whitening? Let’s explore this topic in this article.
Teeth Whitening
is a process that helps make teeth appear whiter by removing stains or discoloration caused by various factors, such as consuming colorful foods or drinks (e.g., tea, coffee, red wine), smoking, or aging.
Teeth whitening can be done in several ways, categorized into two main types:
1. Professional Teeth Whitening at a Dental Clinic
- Process: A dentist applies a high-concentration whitening agent, such as hydrogen peroxide or carbamide peroxide, to the teeth. Light sources like lasers or LED lights may be used to enhance the whitening effect.
- Advantages: Fast results (within 1-2 hours) and safe under professional supervision.
- Disadvantages: Relatively high cost.
2. At-Home Teeth Whitening
- Process: A dentist provides a custom-fitted whitening tray and a lower-concentration whitening gel for self-application. The tray is typically worn for 1-2 hours daily over 1-2 weeks.
- Advantages: Convenient and more affordable than in-office whitening.
- Disadvantages: Slower results and may not be as effective as professional treatments.
Other Popular Methods:
- Whitening strips
- Whitening toothpaste
- Whitening mouthwash
Precautions:
- Avoid frequent whitening, as it may increase tooth sensitivity
- If low-quality products are used, they may damage the enamel
- Individuals with cavities or gum problems should address those issues before whitening.
- Always consult a dentist before starting any whitening procedure.
Results from teeth whitening typically last 6 months to 2 years, depending on individual habits and care, such as avoiding tea, coffee, or smoking after whitening.

