How do dentists match filling or crown color to your natural teeth?

If you’re getting a filling or crown in a spot people can see, it’s natural to wonder whether it will stand out. Dental providers usually compare your tooth with a shade guide under careful lighting. They may also use a digital color-measuring device for a second reading. A natural-looking match depends on more than choosing a shade of white. 

What you will learn in this article: 

• Dental providers compare a tooth’s lightness, color strength and basic color when choosing a shade.  

• A tooth should stay moist and be checked under controlled lighting.  

• Digital color tools can add an objective reading to a visual shade check.  

• The filling or crown material affects its color, strength and natural appearance.  

If you’re curious how a new crown or filling will look next to your other teeth, schedule an appointment with an Aspen Dental provider. Your care team can explain the material choices and what to expect from the color match. 

What is shade matching? 

Shade matching means choosing a filling or crown color that blends with the teeth around it. Your dental provider compares your tooth with sample shades and looks at details such as lightness, color strength and how light passes through it. The goal is a natural-looking match, not simply the whitest shade. 

How do dental providers pick the right shade? 

Your dental provider combines a visual check with steps that reduce changes caused by lighting, dryness and viewing conditions. A review in Cureus outlines the process below.¹ 

What order do they check color in? 

Color has three main parts: 

• Value means how light or dark the tooth is.  

• Chroma means how strong or rich the color is.  

• Hue means the basic color family, such as yellow or gray.  

Dental providers commonly check value first, followed by chroma and then hue. Getting these three parts close helps the filling or crown blend with the nearby teeth. 

What tools do they use? 

A shade guide is a common starting point. It contains small, tooth-shaped tabs in different shades. The dental provider holds the tabs next to your tooth to find a close match. Many guides use the Munsell color system, which sorts color by value, chroma and hue. 

Your dental provider may also use a digital color tool. A colorimeter measures color under set conditions. A spectrophotometer measures the light reflected by a tooth at different wavelengths. These tools provide a more objective reading to use along with the visual check. 

Do lighting and distance matter? 

Yes. Light can change how a color looks, so dental providers aim to use consistent lighting, such as natural daylight or a daylight-style light. 

The tooth should also stay moist. A dry tooth can appear lighter than it really is, so the shade is usually selected before dental work dries or isolates the tooth. For the visual check, the dental provider may view the tooth at eye level and from about 2 to 6 feet away. 

Why is shade matching sometimes inaccurate? 

Color can look different when the lighting, tooth moisture, background or viewing angle changes. People also do not always see color in exactly the same way. 

In one small study, three dental professionals chose shades for 26 teeth. All three chose the same shade for only one tooth. The consultant matched the spectrophotometer for 3 of the 26 teeth, which was the best result among the three examiners. Because the study involved only three examiners, it cannot show how every dental provider performs. It does show why a dental provider may combine visual judgment with controlled lighting and a digital measurement.² 

Which materials affect how well a restoration matches? 

The material affects color, strength and how much light passes through the restoration. The American Dental Association describes different tradeoffs for materials used in fillings and crowns. 

For fillings, resin composite can be matched to natural tooth color. Glass ionomer is also tooth-colored, but it does not copy enamel’s see-through look as well and has lower resistance to cracking. These differences help your dental provider choose a material based on where the filling will go, how much chewing force it will take and how it should look.³ 

Crowns can be made from ceramics, resin-based materials or a mix of ceramic and metal. Lithium disilicate comes in different levels of translucency and is stronger than many other glass-based ceramics. Zirconia is very strong, and more translucent versions are generally associated with higher fracture rates. Resin composite blocks may cause less wear to the teeth they bite against, but they have lower strength and are mainly used for inlays, onlays and single crowns.⁴ 

Choosing between a crown and a filling often depends on how much healthy tooth remains, where the tooth is and how much chewing force it takes. Your dental provider can explain which option fits your tooth and your goals. 

What can affect the final color result? 

Several things can affect how close the final match looks: 

• How moist the tooth was during the shade check

• The lighting used to select the shade

• The angle and distance used during the visual check

• Natural differences in how people see color

• The material and thickness of the filling or crown

• The color of the natural tooth beneath the restoration

A small difference under one type of light does not always mean the shade is wrong. However, if a new filling or crown looks noticeably different from the nearby teeth, contact your local dental provider. They can check the shade and explain what options may be available. 

How do dentists match filling or crown color to your natural teeth? FAQs 

Still have questions about shade matching? These answers cover a few common concerns. 

Can I pick my own tooth color? 

You can share your preferences with your dental provider. Your dental provider will compare the restoration with your natural teeth and explain which shades and materials may provide a close, lasting match. 

Will my crown or filling match perfectly forever? 

Not always. Natural teeth and restorations can change color at different rates over time. If you notice a new or growing difference, ask your dental provider to check it. 

Does insurance cover premium shade-matching materials? 

Coverage depends on your plan and the material used. Before treatment, ask the dental office for a cost estimate and help checking your benefits. 

Why did my dental provider use a special light to check my tooth color? 

Different types of light can make the same shade look different. Your dental provider may use a daylight-style light to make the shade check more consistent. They may also use a digital shade-measuring device for another reading. 

What if my new crown doesn’t match once it’s placed? 

If the color looks off, tell your dental provider as soon as possible. Depending on the material and stage of treatment, the crown may need to be adjusted or remade. If you notice the difference before it is permanently placed, speak up then so your dental provider can review it with you. 

Sources 

¹ National Institutes of Health, Cureus: “Shade Selection in Esthetic Dentistry: A Review.” https://pmc.ncbi.nlm.nih.gov/articles/PMC9015060/ 

² National Institutes of Health, Annals of Ibadan Postgraduate Medicine: “The Tooth Shade Matching Ability Among Dental Professionals: A Comparative Study.” https://pmc.ncbi.nlm.nih.gov/articles/PMC10061675/ 

³ American Dental Association, ADA Library and Archives: “Materials for Direct Restorations.” https://www.ada.org/resources/ada-library/oral-health-topics/materials-for-direct-restorations 

⁴ American Dental Association, ADA Library and Archives: “Materials for Indirect Restorations.” https://www.ada.org/resources/ada-library/oral-health-topics/materials-for-indirect-restorations