Twin Dental New York

How Teeth Whitening Works: Methods and Results

Teeth whitening is very popular, but do you know how it works, what contraindications it has, or what the ideal method is for you? In this article, “How Teeth Whitening Works: Methods and Results,” discover everything you need to know and clear up all your doubts.

Contact our dental clinic in Manhattan for expert advice.

Contact our dental clinic in Manhattan for expert advice.

How Teeth Whitening Procedures Work?

Teeth whitening is a procedure that involves the use of chemicals, such as hydrogen peroxide or carbamide peroxide, to lighten the shade of teeth. These chemicals go through the enamel, the surface layer of the teeth, and act on the dentin, which is the tissue that determines its color.

How Does Whitening Work?

This process is based on the application of chemical agents that act on the dental structures to achieve a lighter shade. The following is a detailed description of how teeth whitening works:

  1. Application of the chemical agent: hydrogen peroxide or carbamide penetrates the enamel.
  2. Interaction with dentin: It acts on the dentin, lightening its color.
  3. Visible results: Teeth look whiter temporarily, but, as we will see, this effect may not be permanent.

In-Office Whitening Techniques

In dental offices, there are different techniques for whitening teeth, each with its advantages and disadvantages.

In-office options:

  • High-concentration hydrogen peroxide bleaching: The chemical agent is applied directly to the teeth and, in some cases, the process is accelerated with a special lamp.
  • Custom splint whitening: Custom molds are made for the patient to apply the whitening agent at home, under the supervision of the dentist.

Important: Although the lamps accelerate the process, some studies suggest that they can weaken the enamel and are not essential for good results.

Professional vs. Over-the-Counter Whitening

There are clear differences between treatments performed in a dental office and over-the-counter products that promise to whiten teeth.

ProfessionalOver the counter
Performed by a dentistPurchased in pharmacies or online
High concentration of peroxideLow concentration of chemicals
Customized for each patientOne size and general formula for all
Supervised and safeRisk of misuse and damage to gums

Although over-the-counter products can superficially lighten teeth, the results are not as effective or long-lasting as professional treatments.

Achieving and Maintaining Results

The results of teeth whitening can last several months or a year, depending on several factors. Here are some tips to maintain the results for longer:

Tips for maintaining results:

  • Regular oral hygiene: Brushing at least twice a day and flossing.
  • Avoid foods and beverages that stain teeth: Such as coffee, red wine, tea and cola.
  • No smoking: Tobacco stains teeth and accelerates darkening.
  • Periodic fluoride applications: They help strengthen the enamel after whitening.

Timeline for Visible Results

The time to see results after teeth whitening depends on the type of treatment used.

Below is a comparison of typical times for different methods:

MethodEstimated time to see results
In-office whitening1-2 sessions
Custom home splints1-2 weeks
Over-the-counter products (strips, gel)2-4 weeks

Post-Whitening Care

Post-whitening care is necessary to avoid tooth sensitivity and maintain the results.

What to do after teeth whitening?

  • Use desensitizing toothpastes: Relieves temporary sensitivity that may occur after treatment.
  • Avoid acidic foods and drinks: Citrus fruits and vinegar can erode already weakened enamel.
  • Have regular check-ups: See your dentist to monitor the condition of your teeth and receive fluoride applications if necessary.

How Long Until You See Whitening Results?

The results of teeth whitening are usually visible quickly, although they depend on the method used and the initial state of the teeth.

  1. In-office whitening: Immediate results or after a second session.
  2. At-home treatments with customized splints: Visible results in one week.
  3. Commercial products: May take more than two weeks to show significant improvement.

Factors influencing the speed of the results:

  • Initial condition of teeth: Heavily stained teeth may take longer to lighten.
  • Method used: In-office treatments are faster than over-the-counter treatments.
  • Frequency of use: Following the dentist’s instructions is critical for good results.

Is teeth whitening right for you?

Teeth whitening can be an excellent option to improve the appearance of your smile, but you need to understand the risks and benefits. Perform the treatment safely, either at home or under the supervision of a professional. Always consult with your dentist to get the best results without compromising your dental health.

Frequently Asked Questions

  • How Does Teeth Whitening Work at Home?

At-home teeth whitening works by applying products with chemical agents that remove surface stains and lighten the dentin of the teeth.

  • What Are the Ingredients in Teeth Whitening Products?

The main ingredients in teeth whitening products are agents that remove stains and lighten teeth. Here are the main components:

  • Hydrogen peroxide: lightens stains by releasing oxygen that breaks down pigment molecules.
  • Carbamide peroxide: Similar to hydrogen peroxide, but milder and used for longer-lasting treatments.
  • Optical brighteners: Some products include brighteners to give an immediate “white” effect.
  • How Often Can I Get My Teeth Professionally Whitened?

Professional teeth whitening is effective, but should not be done too often to avoid damaging teeth. Here is a general guideline:

  • Every 6 to 12 months: This is the recommended interval for most patients.
  • Consult your dentist: If you experience sensitivity, it may be necessary to extend this time.
  • Are There Any Side Effects of Teeth Whitening?

Although teeth whitening is safe when performed by a professional, there are some temporary side effects to be aware of:

  • Tooth sensitivity: can occur during or after treatment.
  • Gum irritation: If the whitener comes in contact with the gums, it can cause irritation.
  • Enamel erosion: Excessive or improper use of bleaching agents can wear away the enamel.
  • How Does Teeth Whitening Affect Dental Health?

Teeth whitening can affect your oral health if not done properly. Here’s how:

  • Enamel wear.
  • Tooth sensitivity.
  • Limited recovery.

Sources: