{"id":6792,"date":"2025-09-19T11:09:09","date_gmt":"2025-09-19T10:09:09","guid":{"rendered":"https:\/\/www.drbobbychhoker.com.au\/blog\/?p=6792"},"modified":"2025-09-19T11:09:09","modified_gmt":"2025-09-19T10:09:09","slug":"types-of-dental-fillings","status":"publish","type":"post","link":"https:\/\/www.drbobbychhoker.com.au\/blog\/types-of-dental-fillings\/","title":{"rendered":"Types of dental fillings: which one is right for your smile?"},"content":{"rendered":"

You notice a zing when you sip cold water. Your tongue keeps catching on a rough edge. That is your tooth quietly asking for help. A filling can stop decay, restore strength and get you back to comfortable chewing. The right material depends on where the tooth sits, how big the cavity is, how hard you bite and how you want it to look.<\/span><\/p>\n

This guide explains the options with evidence where it matters, and practical examples you can picture clearly, not just read on a chart.<\/span><\/p>\n

Why dentists use different materials<\/b><\/h2>\n

\"Dentist<\/p>\n

Front teeth are showpieces; molars are workhorses. A front tooth needs a natural colour match so you can smile without thinking about it. A molar has to survive thousands of powerful bites every day. Your dentist weighs up durability, conservation of healthy tooth, appearance, longevity and cost to choose the best material for that exact tooth.<\/span><\/p>\n

For an overview of what fillings are and when you might need one, the national summary from <\/span>Healthdirect<\/span><\/a> is a helpful starting point. Victoria\u2019s <\/span>Better Health Channel overview of dental fillings<\/span><\/a> also explains the common materials and aftercare in simple terms.<\/span><\/p>\n

The main types of dental fillings<\/b><\/h2>\n

Composite resin<\/b><\/h3>\n

Best for:<\/b> Visible teeth and small to medium cavities<\/span>
\n<\/span>
\n<\/span>Typical lifespan:<\/b> About 5 to 10 years, depending on bite forces and oral hygiene<\/span>
\n<\/span>
\n<\/span>What it feels like:<\/b> Once polished, the surface feels glassy, and your tongue glides over it without snagging<\/span>
\n<\/span>
\n<\/span>Why people choose it:<\/b> Composite bonds to enamel and dentine, so the dentist often removes less healthy tooth tissue. It blends with your natural shade, is placed in one visit, and small chips can be repaired<\/span>
\n<\/span>
\n<\/span>Considerations:<\/b> Very large chewing surfaces can push composite to its limits. It can gradually pick up stains from coffee, tea, red wine or tobacco<\/span>
\n<\/span>Analogy:<\/b> Think of composite like a high-quality filler and paint for a wall. Ideal when you want a seamless finish that looks like the original surface<\/span><\/p>\n

Amalgam (silver)<\/b><\/h3>\n

Best for:<\/b> Larger back teeth where strength is the priority<\/span>
\n<\/span>
\n<\/span>Typical lifespan:<\/b> Commonly 10 to 15 years or more<\/span>
\n<\/span>
\n<\/span>What it feels like:<\/b> Firm and solid under the bite, sometimes slightly cool to the tongue at first<\/span>
\n<\/span>
\n<\/span>Why people choose it:<\/b> Amalgam is durable and cost-effective for big restorations. It is also more forgiving if the tooth cannot be kept perfectly dry during placement<\/span>
\n<\/span>
\n<\/span>Considerations:<\/b> It looks metallic and does not bond to tooth tissue, so the cavity shape often needs more mechanical retention. Decisions about replacing older metal fillings are best made tooth by tooth after a proper examination<\/span><\/p>\n

Analogy:<\/b> A sturdy metal patch on a toolbox. Not subtle, very reliable<\/span><\/p>\n

Glass ionomer cement (GIC)<\/b><\/h3>\n

Best for:<\/b> Children, small cavities near the gum line and situations where fluoride release is useful<\/span>
\n<\/span>
\n<\/span>Typical lifespan:<\/b> Generally 3 to 7 years<\/span>
\n<\/span>
\n<\/span>What it feels like:<\/b> Smooth but a little softer than composite in the first days<\/span>
\n<\/span>
\n<\/span>Why people choose it:<\/b> GIC bonds chemically to the tooth and releases fluoride, which can help reduce new decay around the edges. It suits cases where moisture control is tricky<\/span>
\n<\/span>
\n<\/span>Considerations:<\/b> Less resistant to wear and fracture, so it is not ideal for large load-bearing areas<\/span><\/p>\n

Analogy:<\/b> A protective undercoat that seals and safeguards, though not the toughest top layer<\/span><\/p>\n

Porcelain (ceramic) inlays and onlays<\/b><\/h3>\n

Best for:<\/b> Larger restorations where strength and a premium, tooth-like appearance matter<\/span>
\n<\/span>
\n<\/span>Typical lifespan:<\/b> About 10 to 15 years, often longer with excellent care<\/span>
\n<\/span>
\n<\/span>What it feels like:<\/b> Satin-smooth and hard, with a crisp fit that feels \u201cpart of the tooth\u201d<\/span>
\n<\/span>
\n<\/span>Why people choose it:<\/b> Porcelain is custom-made for a precise fit, resists staining and can reinforce weakened cusps<\/span>
\n<\/span>
\n<\/span>Considerations:<\/b> Usually involves laboratory work and a second visit unless your clinic offers same-day milling. The fee is higher than a direct filling<\/span><\/p>\n

Analogy:<\/b> A custom ceramic tile cut to slot perfectly into a floor, built to last under daily foot traffic<\/span><\/p>\n

Gold inlays and onlays<\/b><\/h3>\n

Best for:<\/b> People who value longevity and function over a tooth-coloured look<\/span>
\n<\/span>
\n<\/span>Typical lifespan:<\/b> Frequently 15 to 30 years<\/span>
\n<\/span>
\n<\/span>What it feels like:<\/b> Exceptionally smooth and gentle on the opposing tooth<\/span>
\n<\/span>
\n<\/span>Why people choose it:<\/b> Gold is extremely durable and kind to your bite over decades<\/span>
\n<\/span>
\n<\/span>Considerations:<\/b> Clearly visible and higher upfront cost<\/span><\/p>\n

Analogy:<\/b> A trusty spanner in the toolkit. Not pretty, incredibly dependable<\/span><\/p>\n

Side-by-side comparison<\/b><\/h2>\n\n\n\n\n\n\n\n\n
Material<\/b><\/td>\nBest use<\/b><\/td>\nTypical lifespan<\/b><\/td>\nKey advantage<\/b><\/td>\nPrimary limitation<\/b><\/td>\n<\/tr>\n
Composite resin<\/span><\/td>\nFront teeth, small to medium back fillings<\/span><\/td>\n5 to 10 yrs<\/span><\/td>\nNatural look, conservative on teeth<\/span><\/td>\nCan chip or stain on heavy loads<\/span><\/td>\n<\/tr>\n
Amalgam<\/span><\/td>\nLarge posterior restorations<\/span><\/td>\n10 to 15+ yrs<\/span><\/td>\nVery durable, economical<\/span><\/td>\nMetallic appearance, more tooth shaping<\/span><\/td>\n<\/tr>\n
Glass ionomer<\/span><\/td>\nChildren, gum line areas<\/span><\/td>\n3 to 7 yrs<\/span><\/td>\nBonds and releases fluoride<\/span><\/td>\nLower wear resistance<\/span><\/td>\n<\/tr>\n
Porcelain inlay or onlay<\/span><\/td>\nLarge aesthetic repairs<\/span><\/td>\n10 to 15+ yrs<\/span><\/td>\nLife-like and strong<\/span><\/td>\nCost, lab time<\/span><\/td>\n<\/tr>\n
Gold inlay or onlay<\/span><\/td>\nLong-term posterior repairs<\/span><\/td>\n15 to 30 yrs<\/span><\/td>\nExceptional longevity<\/span><\/td>\nCost, metal look<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

What to expect during a filling
\n<\/b><\/h2>\n

\"Dentist<\/p>\n

    \n
  1. Assessment and imaging<\/b>
    \n<\/b> Your dentist examines the tooth and may take an x-ray to gauge depth and spread. You will hear a clear explanation of the choices with pros and cons for your situation.<\/span><\/li>\n
  2. Local anaesthetic<\/b>
    \n<\/b> The area is numbed. Most people feel vibration, water spray and light pressure rather than pain.<\/span><\/li>\n
  3. Removal of decay<\/b>
    \n<\/b> Soft, decayed tissue is cleared, and the cavity is shaped for the chosen material. You may notice the clean, slightly medicinal scent of the disinfectant gel.<\/span><\/li>\n
  4. Preparation and isolation<\/b>
    \n<\/b> A rubber dam may be placed. It keeps the tooth dry and gives you a calmer, less splashy experience.<\/span><\/li>\n
  5. Placement<\/b>
    \n<\/b> Direct materials such as composite or GIC are placed, shaped and set in the chair. Indirect restorations such as porcelain or gold are fabricated, then bonded or cemented at a second visit.<\/span><\/li>\n
  6. Finishing and bite check<\/b>
    \n<\/b> The surface is polished so it feels silky to the tongue. Your dentist checks that your bite meets evenly on both sides.<\/span><\/li>\n<\/ol>\n

    What the evidence says about longevity<\/b><\/h2>\n

    Material choice is part science, part context. High-quality reviews show that in some back teeth, especially when the cavity is large or the bite is heavy, tooth-coloured composites can fail more often than amalgam. That does not make composite a poor choice. It means technique, moisture control and cavity size matter.<\/span><\/p>\n

    If you like to see the primary source, the <\/span>Cochrane review on composite versus amalgam in posterior teeth<\/span><\/a> summarises the research clearly.<\/span><\/p>\n

    Caring for fillings so they last<\/b><\/h2>\n