Crown or Filling? The Small Difference That Can Make a Big Difference to Your Tooth
They may look similar at first glance, but a small cavity and a badly weakened tooth can require very different procedures. A filling can replace lost tooth material and restore a relatively limited area. A crown can cover and protect a tooth that has lost more of its natural strength. And knowing the difference can help you to have a more educated conversation with your dentist.
Crowning teeth is a very easy subject to research, and one that can lead to the assumption that a crown is just a bigger filling. It is not. The two types of restorations are for different purposes and the selection depends on such things as the extent of remaining healthy tooth, the extent of the damage, previous dental work, and the forces exerted on the tooth with normal chewing.
What’s the Difference Between a Crown and a Filling?
A dental filling is generally used to repair a specific part of a tooth that is damaged or decayed. The dentist takes out the bad part and fills the missing material with a restorative material.
Crowns are different. It is a custom made cap that is placed over the prepared tooth and covers a large part of its structure. This makes it useful when a tooth needs wider protection or reinforcement.
So it is not such a simple choice. It is not just the choice of the bigger treatment. The dentist should choose the restoration that best suits the condition of the tooth while conserving as much healthy tooth structure as possible.
When Is a Filling Appropriate?
If enough tooth structure is left to keep the tooth stable after the damaged area is removed, a filling may be appropriate.
Such common situations are relatively small or moderate cavities, and some limited areas of damage to teeth. The dentist looks at the size and position of the defect and the strength of the remaining tooth.
But if too much of the structure has already been lost, another filling may not provide enough long-term support.
When Is a Crown Better?
You may consider a crown if a tooth has been severely weakened by decay, a large existing filling, fracture, significant wear or previous treatment.
Dental clinic specifically lists large fillings that have become loose, extensive tooth decay, cracks, heavy wear and certain root canal treated teeth as situations where a crown may be indicated.
The goal is to save the remaining tooth, not to simply fill a hole.
Why Does a Big Filling Cause a Different Problem?
A large filling may successfully restore a tooth, but can also leave relatively little natural structure surrounding the restoration.
Let’s say you have a tooth with a cavity that has taken out a good chunk of the tooth. Although the missing material has been replaced, the remaining walls may still be exposed to damage due to chewing pressure.
Repeated forces over time can cause further cracking or breakage in a structurally compromised tooth. A crown can support and cover a large filling when a tooth becomes loose.
But not all large fillings need to be replaced with a crown. The condition of the single tooth counts.
What Does a Dentist Think About Crown or Filling?
A dentist doesn’t just see the size of the visible cavity. Depending on the overall condition of the tooth, a filling, crown or other restoration may be the best option.
Number of Healthy Teeth Remaining
One of the most important factors is the amount of natural structure that remains.
If there is enough of the tooth remaining, a filling can be used to rebuild the damaged portion without needing too much coverage. If there is a lot of structure missing a crown might provide more complete protection.
Where the Damage Is
The site of the damage may influence the decision as to treatment.
The forces of mastication are large on the back teeth whilst the front teeth have other esthetic and functional requirements. The treatment plan depends on the size, position and depth of the damaged area.
Restorations in Situ
An older filling can sometimes crack, wear away or become loose. If decay develops around a previous restoration the dentist may have to remove it and reassess how much healthy structure remains.
Sometimes a new filling is appropriate. In some a crown might give more structural protection.
Fissures and Fractures
A cracked tooth is something that has to be looked at carefully, because merely filling the visible crack may not solve the structural problem that underlies it.
In some crack cases, a crown might be suggested to help safeguard the remaining tooth structure. However, the location and severity of the fracture must be evaluated before treatment is chosen.
5 Signs You Might Need More Than a Simple Filling
We are going to need to do a dental exam but there are times when a more extensive restoration may be worth discussing.
- A lot of the tooth is already gone.
- There is a big filling in the tooth.
- The tooth has developed a large crack or fracture.
- The tooth is extensively worn from grinding or other forces.
- The tooth has been root canal treated and needs further support through a crown.
These signs don’t automatically mean you need a crown. “More than just a simple filling is needed,” they suggest, and the tooth should be evaluated by a professional.
Why It’s Important to Choose the Right Restoration
The difference between a crown and a filling is more than cosmetic. This can impact the tooth’s function and the restoration’s ability to withstand the forces placed upon it.
If the wrong restoration is used it can be problematic, especially if the remaining tooth structure is not able to support it properly. In contrast, a crown might be indicated if a more conservative restoration would be adequate and removal of healthy tooth structure would not be justified.
The best medicine is a combination of restoration, protection and preservation.
Questions to Ask Your Dentist
Before you agree to treatment, you might want to ask:
- How much healthy tooth structure is left?
- Why do I need a crown rather than a filling?
- Could another conservative restoration work?
- Is there a crack or break already?
- What are the risks of delaying treatment?
These questions can help you understand the reasoning of the clinician behind the recommendation, instead of just deciding based on price or what it looks like.
What Happens in a Crown Procedure?
Crown treatment usually requires more prep work than a traditional filling because the tooth must be shaped to fit the restoration.
Dental clinic has explained that the process may include consultation, examination, X-rays or pulp testing, tooth preparation, digital scanning or impressions, temporary crown fitting and final restoration placement.
How this is done depends on the tooth, the material selected and whether any other treatment is required first.
What Is a Temporary Crown and Why Do I Need It?
A temporary crown may be placed over the prepared tooth to protect it while the permanent restoration is being made.
While wearing a temporary crown, patients may have to avoid hard or sticky foods. If the temporary restoration becomes loose or falls off, please contact the dental clinic as soon as possible.
What Is the Difference in Cost?
Of course, the price can be a factor in the decision of whether to get a filling or a crown, but just comparing prices can be misleading.
Fillings are usually smaller restorations, while crowns require lab or digital fabrication and a more involved preparation process. The final cost of a crown can also vary depending on the material and complexity of the treatment.
5 Things That May Affect Your Treatment Choice
Depending on a number of details specific to the tooth, the dentist may have a different recommendation.
- Structural strength: More remaining tooth structure may allow a more conservative restoration.
- How much decay is present: More or deeper decay may mean there is less support.
- Existing filling: A big restoration or one that is failing can affect whether wider protection is needed.
- Bite forces: Vulnerable teeth can be subject to additional stress from grinding, clenching and heavy chewing forces.
- Previous treatment: Previous root canal treatment or restorative work can change the structural demands of the tooth.
These factors explain why two teeth with cavities that appear similar could have completely different treatment recommendations.
Crown Alternatives?
A crown isn’t the only way to restore a damaged tooth.
Depending on the condition of the tooth, a dentist may consider a filling, an inlay, an onlay, bonding or another restorative step. The correct choice depends on how much tooth structure remains and what the restoration is intended to accomplish.
The goal should be to choose the best treatment for the tooth rather than defaulting to the most invasive option.
The Importance of Professional Assessment
You can read online about terminology, but that won’t tell you whether your particular tooth requires a filling or a crown.
The dentist can look at the tooth, see what restorations are already in place, determine the symptoms present and take diagnostic images if necessary. This gives information that cannot be gained from appearance alone.
How Crowns Are Treated
When researching restorative options in Singapore, Nuffield Dental explains how to choose a crown: The choice of crown depends on the condition of the patient’s tooth, functional requirements and expectations. Dental crown information covers different types of crown materials and the steps in treatment.
This is useful. The material is just one part of the decision. The dentist first has to determine whether a crown is indicated and what type of restoration is best suited to the tooth.
Patients should also ask about bite adjustment, maintenance, expected longevity, and what to do if the crown becomes damaged or loose.
Choosing the Right Tooth
To clarify, the distinction between a filling and a crown can sound trivial, but the difference can make a world of difference in the case of a compromised tooth.
A filling is a replacement for a damaged area. A crown is used to surround and protect a tooth that may need some extra structural support. Not necessarily better either. The right treatment will depend on how much healthy structure is left, what type of damage has occurred and what the long term demands on the tooth will be.
Ask your dentist why he or she wants to do a crown when you thought a filling was in the cards. Understanding the condition of your tooth, the purpose of the suggested reconstruction and the options available will allow you to make a confident and informed decision.
Bottom Line: Match Restoration to Tooth
A filling is a good solution when the tooth isn’t too badly damaged and there’s enough healthy tooth structure. If the tooth is very weakened, and needs to be covered more extensively, a crown may be more appropriate.
The real question is not whether a crown is larger than a filling. The issue is whether the restoration provides the right amount of protection while preserving the tooth as well as possible.
Knowing that difference makes it easier to evaluate a treatment recommendation. You can consider not just appearance and initial cost in your selection, but also the structural condition of the tooth, long term function and the reasoning behind your dentist’s recommendation.
