Composite Vs Amalgam Fillings – Pros, Cons & Which Is Better

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Key Takeaway

Composite and amalgam fillings are both safe and effective for treating tooth decay, but they serve different purposes. Composite fillings offer a natural appearance and are ideal for visible teeth, while amalgam fillings provide exceptional strength and durability, especially for back teeth. The best option depends on factors such as location, budget and long-term expectations.

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What Are Composite And Amalgam Fillings

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Dental tooth fillings are used to restore teeth damaged by decay, and the material chosen plays a key role in the outcome.

  • Composite fillings are made from tooth-coloured resin.
  • Amalgam fillings are manufactured from a varied mix of metals.
  • Both materials restore function and structure
  • Each has different strengths and limitations

Composite fillings are designed to blend in with natural teeth, while amalgam fillings are valued for their strength and longevity. Choosing between them depends on both clinical needs and personal preferences.

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Composite Vs Amalgam Fillings: A Comparison

FeatureComposite FillingsAmalgam Fillings
AppearanceTooth-coloured, blends naturallySilver/metallic, clearly visible
DurabilityModerate (5–10 years)High (10–15+ years)
StrengthGood for low to moderate pressureExcellent for heavy chewing forces
Best ForFront teeth and visible areasBack teeth (molars)
Tooth PreservationRequires less removal of natural toothRequires more removal of tooth structure
CostSlightly higher in some casesGenerally more cost-effective
Procedure TimeSlightly longer (layering required)Usually quicker to place
SensitivityMay cause temporary sensitivityLess post-treatment sensitivity
Aesthetic AppealHighLow
LongevityShorter lifespanLonger lifespan
Material CompositionResin-based, metal-freeMixture of metals (including mercury)
Popularity TodayMore commonly usedLess common, but still widely used

💡 The right dental filling depends on where the tooth is located and how much pressure it handles.

Pros And Cons Of Composite Fillings

Composite fillings are a popular modern choice, especially for patients concerned about aesthetics.

Advantages Of Composite Fillings

Composite materials offer several benefits that make them widely used in dentistry.

  • Natural tooth-like appearance
  • Bonds directly to the tooth structure
  • Requires less removal of healthy tooth
  • Suitable for front and visible teeth.

They are often preferred when appearance is a priority, particularly for teeth that are easily seen when smiling.

💡 Composite fillings are ideal when aesthetics matter most.

Disadvantages Of Composite Fillings

Despite their advantages, composite fillings also have some limitations.

  • Less durable under heavy pressure
  • May wear down faster over time.
  • Slightly higher cost in some cases
  • Can require replacement sooner

They may not always be the best choice for large cavities in molars where chewing forces are higher.

💡 Composite may not be ideal for high-pressure areas like back teeth.

Pros And Cons Of Amalgam Fillings

Amalgam fillings have been used for decades and remain known for their strength.

Advantages Of Amalgam Fillings

Amalgam is valued for its durability and ability to withstand heavy chewing forces.

  • Extremely strong and long-lasting
  • Resistant to wear and fracture
  • Cost-effective option
  • Suitable for back teeth.

They are particularly useful for molars where durability is more important than appearance.

💡 Amalgam is a reliable choice for long-term strength.

Disadvantages Of Amalgam Fillings

There are also drawbacks that may influence your decision.

  • Metallic appearance is noticeable.
  • Requires removal of more tooth structure.
  • May expand and contract with temperature changes.
  • Less commonly used for visible areas.

Many patients prefer alternatives due to cosmetic concerns.

💡 Amalgam is functional but not aesthetically pleasing.

Composite Vs Amalgam: Key Differences

Comparing both materials side by side highlights their main differences and helps guide decision-making.

  • Composite blends with natural teeth, amalgam does not
  • Amalgam lasts longer in high-pressure areas
  • Composite preserves more natural tooth structure
  • Amalgam is often more cost-effective

Each material has a specific role depending on the location and condition of the tooth.

Understanding these differences ensures the best outcome for your dental treatment.

💡 Choose based on function, visibility, and long-term goals.

Which Filling Material Is Better For You

There is no single answer to which tooth filling is better, as the choice depends on individual circumstances.

When Composite Fillings Are Preferred

Composite fillings are often recommended in situations where appearance is important.

  • Front teeth or visible areas.
  • Small to medium cavities.
  • Patients wanting a natural look
  • Situations requiring minimal tooth removal

They are commonly chosen for cosmetic reasons and modern dental treatments.

💡 Composite is best for visible teeth and aesthetic results.

When Amalgam Fillings Are Preferred

Amalgam fillings may be recommended for strength and durability.

  • Back teeth with heavy chewing pressure
  • Large cavities
  • Patients prioritising longevity.
  • Situations where cost is a concern.

They provide reliable performance in demanding conditions.

💡 Amalgam is best suited for durability over appearance.

Longevity And Performance Comparison

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The lifespan of dental tooth fillings is an important factor when choosing between materials.

  • Composite fillings last around 5–10 years
  • Amalgam fillings can last 10–15 years or more
  • Durability depends on oral hygiene
  • Bite pressure affects wear over time.

While amalgam generally lasts longer, proper care can significantly extend the life of composite fillings.

Regular dental check-ups help ensure both types remain in good condition.

💡 Good oral hygiene extends the lifespan of any filling material.

Safety Considerations For Both Filling Materials

Both composite and amalgam fillings are considered safe when used appropriately.

  • Composite is metal-free and widely accepted.
  • Amalgam has been used safely for decades.
  • Both materials are approved for dental use.
  • Dentists select materials based on patient needs

Concerns about safety are minimal, and both options are supported by modern dental research.

Patients can discuss preferences with their dentist to choose the most suitable option.

💡 Both materials are safe when placed by a qualified dentist.

How Whites Dental Can Assist With Dental Tooth Fillings In Central London

If you are deciding between composite and amalgam dental tooth fillings in London, professional guidance is essential. Whites Dental in London offers tailored treatment plans based on your needs.

With clinics in Waterloo and Marble Arch, patients receive expert advice and high-quality care.

  • Personalised material recommendations
  • Focus on both aesthetics and durability
  • Use of modern dental techniques
  • Clear explanation of treatment options

The team ensures you understand the benefits of each option before making a decision.

FAQs

Are Composite Fillings Better Than Amalgam

Composite fillings are better for appearance, while amalgam is better for durability in high-pressure areas.

Do Composite Fillings Last As Long As Amalgam

Composite fillings generally have a shorter lifespan compared to amalgam but can still last many years with proper care.

Are Amalgam Fillings Still Used

Yes, amalgam fillings are still used, especially for back teeth where strength is important.

Which Filling Is Safer

Both composite and amalgam fillings are considered safe when used appropriately by a dentist.

Can I Replace Amalgam With Composite

Yes, many patients choose to replace amalgam fillings with composite for aesthetic reasons.

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Author

Dr Deepa Chopra Author Of Whites Dental Blog

Dr Deepa Chopra
Principal Dentist & Clinic Founder
GDC registration number: 124489
Membership of the Faculty of Dental Surgery from the Royal College of Surgeons of Edinburgh
Membership of the British Dental Association
Restorative Dentistry from Tipton
Align Invisalign profile
LinkedIn profile
Areas of Expertise: 20+ Years Dentistry Experience. General Dentistry, Cosmetic Dentistry, Restorative Dentistry, Invisalign, Composite Bonding, Veneers, Root Canals, Crowns, Dentures, Gum Disease, Hygienist Services, Emergency Dental Services & Teeth Whitening.

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Privacy Overview

Whites Dental (“we”, “us” or “our”) are committed to protecting and respecting your privacy.

The practice respects your privacy and is committed to protecting your personal data. This Privacy Policy sets out how we will do this, taking into account data protection laws as well as our professional guidelines and requirements.

The data controller is Whites Dental; the Information Governance Lead is Deepa Chopra.

This Privacy Policy is available on the practice website at www.whitesdental.co.uk/privacy-policy, by email if you contact [email protected] or by calling the practice on 0204 527 3210.

This policy (together with our Cookies Policy) sets out the basis on which any personal data we collect, or that you provide to us, will be processed by us. It does not include data where the identity has been removed (i.e. anonymous data).

Please read the following carefully to understand our views and practices regarding your personal data and how we will treat it.

You will be asked to provide personal information when joining the practice. The purpose of us processing this data is to provide optimum health care to you by, for example, recommending the most relevant treatment and ensuring your safety by taking your medical history.

The categories of data we process

  • Contact data (such as name, address, email address, telephone number) for the purposes of corresponding with you, for example, regarding your appointments and treatment.
  • Contact data (such as name, address, email address, telephone number) for the purposes of direct mail/email/text/marketing.
  • Special category data concerning health (including health records, medical history, medication, your doctor’s name and address, warning cards or bracelets, alcohol and drug use) for the purposes of the delivery of safe health care.
  • Treatment data (such as photos, moulds, X-rays, clinical findings) for the purposes of providing you with the best treatment.
  • Financial data (such as credit card details, bank account information, credit history, employment status) for the purposes of processing your payment for treatment(s).
  • Usage data (such as information about how you use our website, products and services) for the purposes of improving the way we provide our treatment and services.

The ways we collect information about you

We may collect and process the following data about you in operating the website and performing any of our services and treatment(s):

Direct
  • Information you give us (including information you give to our Clinical Lead, Specialists, Dentists, Hygienists and Orthodontic Therapists who are contracted to work for us). You may give us information about you by filling in forms on our website www.whitesdental.co.uk or by corresponding with us by phone, email, in person or otherwise.
  • Personal data is obtained when a patient joins the practice, when a patient is referred to the practice and when a patient subscribes to an email list.
Automatic
  • Information we automatically collect about you. With regard to each of your visits to our website we may automatically collect the following information:
  • Technical information, including the internet protocol (IP) address used to connect your computer to the internet, your login information, browser type and version, time zone setting, browser plugin types and versions, operating system and platform; and
  • Information about your visit, including the full Uniform Resource Locators (URL) clickstream to, through and from our site (including date and time); products you viewed or searched for; page response times, download errors, length of visits to certain pages, page interaction information (such as scrolling, clicks, and mouseovers), and methods used to browse away from the page and any phone number used to call our customer service number.
From third parties
  • Our Clinical Lead, Specialists, Dentists, Hygienists and Orthodontic Therapists are third parties working for us as contractors, however, they are contractually bound to us with regard to obligations of confidentiality in the same way as our employees and by professional obligations of confidentiality.
  • You may have been referred to us for treatment from Invisalign and we will therefore receive contact data, special category data concerning health, treatment data and/or financial data from them.
  • Information we receive from other sources. We may receive information about you if you use any of the other websites we operate or the other services we provide.
  • We are also working closely with third parties (including, for example, business partners, subcontractors in technical, payment and delivery services, advertising networks, analytics providers, search information providers, credit reference agencies) and may receive information about you from them.
  • We use third-party analytics services (such as Google Analytics) to evaluate your use of the website, compile reports on activity, collect demographic data, analyze performance metrics, and collect and evaluate other information relating to our website and internet usage. These third parties use cookies and other technologies to help analyse and provide us with data.

How we share data with third parties

We may share your Contact data, special category of data relating to health, Financial data, Treatment data and/or Usage data with selected third parties including:

  • Our Clinical Lead, Specialists, Dentists, Hygienists and Orthodontic Therapists.
  • Private health insurance companies (at your request if you are using private health insurance).
  • Credit reference agencies.
  • Equipment providers and laboratories such as Align Tech, Nimrodental, and Ashford Orthodontics.
  • Professional compliance organisations such as BDA.
  • Data storage and transfer platforms such as Microsoft Sharepoint and Dropbox.
  • Our payment platform Natwest.
  • Our practice management and CRM software providers Pearl.
  • Our live chat provider Quriobot.
  • Advertisers and advertising networks that require the data to select and serve relevant adverts to you and others such as Facebook.
  • Analytics and search engine providers that assist us in the improvement and optimisation of our site such as Google.

This is a list of the main third parties with whom we share your personal data. If you would like a full list of third parties who process your data, and their contact details, please contact us using the details set out above.

We never pass your personal details to a third party unless we have a contract for them to process data on our behalf and will otherwise keep it confidential.

If we intend to refer a patient to another practitioner or to secondary care such as a hospital we will gain your consent before the referral is made and the personal data is shared.

The website may include links to third party websites, plugins and applications. Clicking on those links or enabling those connections may allow third parties to collect or share data about you. We do not control these third party websites and are not responsible for their privacy statements. When you leave our website, we encourage you to read the privacy notice of every website you visit.

Data transferred outside the EU

  • Personal data is stored in the EU whether in digital or hard copy format.
  • Personal data is stored in the US in digital format when the data storage company is certified with the EU-US Privacy Shield.

Lawful basis for processing personal data

The lawful bases for processing personal data (including providing your personal data to third parties) are:

  • Consent of the data subject for data relating to treatment, care, our services, processing payment, credit checks, marketing and reviews, improving our services and improving our website (including using data analytics). This will also apply to the storage of personal data for these purposes.
  • Processing is necessary for the performance of a contract with the data subject or to take steps to enter into a contract such as the provision of the services by us.
  • Processing is necessary to comply with a legal obligation such as financial, tax and contractual laws.

For consent relating to children and people who may not have mental capacity to give consent, please contact us using the details above for a copy of our Safeguarding and Mental Capacity policies.

The reason for processing special category data such as patients’ health data is:

  • The processing is necessary for the purposes of preventative or occupational medicine, for assessing the working capacity of the employee, medical diagnosis, the provision of health or social care or treatment or management of health or social care systems and services on the basis of Union or Member State law or a contract with a health professional; and
  • Data is processed by or under the responsibility of a professional subject to the obligation of professional secrecy under Union or Member State law or rules established by national competent bodies or by another person also subject to an obligation of secrecy under Union or Member State law or rules established by national competent bodies.

Purposes for processing personal data

We (and the third parties listed above) process your personal data for the following purposes:

  • To provide you with our services.
  • To discuss relevant treatments.
  • To provide a safe working environment for staff, contractors and patients.
  • To check your employment and financial status for payment plans.
  • To process payments.
  • To keep you informed of our latest offers, other services we provide and general marketing activities.
  • To obtain reviews and feedback on your experience of our services.
  • To store our data.

If you would like more information about how your data is processed please contact us by using the details set out above.

Data retention

The retention period for special category data in patient records is a minimum of 10 years and may be longer for complex records in order to meet our legal requirements. The retention periods for other personal data is two years after it was last processed.

You will receive marketing emails until you unsubscribe, either by contacting us or by clicking on the unsubscribe link at the bottom of the email. For details of other retention periods please contact us using the details set out above.

Your personal data rights

You have the following personal data rights:

  • The right to be informed.
  • The right of access to your personal data, which enables you to receive a copy of the personal data we hold about you and to check that we are lawfully processing it.
  • The right to rectification of your personal data that you consider to be inaccurate. This enables you to have any incomplete or inaccurate data we hold about you corrected.
  • The right to erasure. This enables you to ask us to delete or remove your personal data (however clinical records must be retained for a certain time period).
  • The right to restrict processing. This gives you the option to ask us to suspend the processing of your personal data e.g. if you want us to establish the data’s accuracy or you do not want us to erase it.
  • The right to data portability. If you request us to do so, we will provide to you, or a third party of your choice, your personal data in a commonly used, machine-readable format.
  • The right to object. This enables you to object to the processing of your personal data if you feel it impacts on your fundamental rights and freedoms, however, in some cases, we may have compelling legitimate grounds to process your information which can override your right to object.
  • The right to request confirmation as to whether or not your personal data is being processed.
  • The right to not have a decision made about you based solely on automated processing.

You have the right to withdraw consent at any time. If you request us to do so, we will no longer process your data. However, this will not affect the lawfulness of any processing carried out before you withdraw your consent. If you withdraw your consent, we will not be able to provide you with the services. You have the right to obtain a free copy of your patient records within one month of submitting a request.

If you are not a patient of the practice you have the right to withdraw consent for processing personal data, to have a free copy of it within one month of submitting a request, to correct errors in it or to ask us to delete it. You can also withdraw consent from communication methods such as telephone, email or text.

We have carried out a Privacy Impact Assessment and if you would like a copy please contact us using the details set out above.

If you wish to exercise any of the rights set out above, in the first instance, please contact us using the details set out above.

You will not have to pay a fee to access your personal data (or to exercise any of the other rights). However, we may charge a reasonable fee if your request is clearly unfounded, repetitive or excessive. Alternatively, we may refuse to comply with your request in these circumstances.

We may need to request specific information from you to help us confirm your identity and ensure your right to access your personal data (or to exercise any of your other rights). This is a security measure to ensure that personal data is not disclosed to any person who has no right to receive it. We may also contact you to ask you for further information in relation to your request to speed up our response.

Further details of these rights can be obtained on the Information Commissioner’s website.

Data security

We have put in place appropriate security measures to prevent your personal data from being lost, used or accessed in an unauthorised way, altered or disclosed. In addition, we limit access to your personal data to those employees, agents, contractors and other third parties who have a business need to know. They will only process your personal data on our instructions and they are subject to a duty of confidentiality.

We have put in place procedures to deal with any suspected personal data breach and will notify you and any applicable regulator of a breach where we are legally required to do so.

Unfortunately, the transmission of information via the internet is not completely secure. Although we will do our best to protect your personal data, we cannot guarantee the security of your data transmitted through our website; any transmission is at your own risk. Once we have received your information, we will use strict procedures and security features to try to prevent unauthorised access.

Comments, suggestions and complaints

Please contact the practice for a comment, suggestion or a complaint about your data processing at [email protected], or 0204 527 3210 or by writing to or visiting the practice. We take complaints very seriously.

If you are unhappy with our response or if you need any advice you should contact the Information Commissioner’s Office (ICO). Their telephone number is 0303 123 1113, you can also find other contact options here. The ICO can investigate your claim and take action against anyone who’s misused personal data. You can also visit their website for information on how to make a data protection complaint.

Marketing by us

We offer individuals real choice and control. Our consent procedures put individuals in charge to build customer trust and engagement.

Our consent for marketing requires a positive opt-in, we don’t use pre-ticked boxes or any other method of default consent. We make it easy for people to withdraw consent, tell you how to and keep contemporaneous evidence of consent. Consent to marketing is never a precondition of a service.

You will receive marketing communications from us if you have requested information from us or if you have signed up via our contact form on the website and, in each case, you have not opted out of receiving that marketing.

Marketing by third parties

We do not share your data with third parties for marketing purposes.

Opting out

Where you opt-out of receiving these marketing messages, this means that you may not receive messages relating to your appointments or treatment so please let us know by using the details set out above if you would like to continue to receive messages about your appointments and treatment.