For decades, silver amalgam fillings were the standard for repairing cavities. Today, most patients in Aurora prefer tooth-coloured options that blend with natural enamel and support long-term tooth strength. If you have older silver fillings or you are choosing a new restoration, here is a clear comparison to help you decide what fits your mouth, goals, and budget.
What are silver amalgam fillings
Silver amalgam is a mixture of metals that includes silver, tin, copper, and elemental mercury bound into a stable alloy. These fillings are durable and have a long track record. Many people still have amalgams placed twenty or more years ago that are intact and serviceable.
Pros
- Strong and wear resistant on back teeth
- Less sensitive to moisture at placement than some white materials
- Historically cost effective
Cons
- Visible gray colour that can darken the tooth over time
- Does not bond to enamel, so more tooth structure is often removed to create mechanical retention
- Can expand and contract with temperature, which may contribute to tiny cracks at the margins over time
- May corrode and stain nearby enamel or gums
What are tooth-coloured restorations
Tooth-coloured options include composite resin fillings and ceramic restorations such as porcelain or zirconia inlays, onlays, and crowns. These materials are designed to match your enamel and bond directly to the tooth.
Composite resin
- A blend of glass and resin that bonds to enamel and dentin
- Ideal for small and medium cavities
- Completed in one visit
Ceramic inlays, onlays, and crowns
- High-strength materials that mimic natural translucency
- Best for larger fractures, heavy bite forces, or teeth with old, failing fillings
- Often designed digitally for precise fit and shade
Aesthetics and confidence
Colour matters in everyday life and in photos. Tooth-coloured restorations blend with your smile and avoid the gray shadows that older amalgams can create. On front teeth and premolars that show when you speak, composites and ceramics provide a natural look that boosts confidence. Even on back molars, many patients prefer restorations that do not show up as dark spots.
Tooth conservation and strength
Because composites bond to enamel, they often require less drilling than silver fillings. This conservative approach preserves healthy tooth structure. Bonding can also help reinforce thin areas of enamel. For larger damage, ceramic onlays and crowns restore strength by covering and supporting cusps that are at risk of cracking. The result is a tooth that functions well and is protected for the long term.
Sensitivity and comfort
Modern adhesive techniques reduce post-treatment sensitivity for most patients. Composites may feel slightly tender for a few days, especially with cold drinks, and this usually settles as the tooth adjusts. Ceramics are polished and glazed to a smooth finish that feels natural to the tongue and cheeks. If you clench or grind, we may recommend a night guard to protect any restoration from extra force.
Longevity in the real world
Any filling or crown will last longer with good brushing, flossing, and regular cleanings. As a general guide:
- Small to medium composite fillings often last 5 to 10 years or more
- Ceramic onlays and crowns commonly last 10 to 15 years or longer
- Older silver fillings can last many years but may fracture at the edges or stain over time
Daily habits and bite force influence these timelines. We design your restoration based on where the tooth sits, how you chew, and the size of the cavity or crack.
Safety and materials
Amalgam has been used for over a century. Health authorities consider it safe for most people. If you have concerns about metal sensitivity or you simply prefer a metal-free option, composites and ceramics are good choices. Our practice follows strict protocols when removing old restorations of any type, including high-volume suction and water spray to control debris. We discuss materials in plain language and help you choose what fits your values.
When should old silver fillings be replaced
A silver filling that is intact and does not leak can often be monitored. Replacement makes sense when we see:
- Cracks in the surrounding tooth
- Recurrent decay at the margin
- Chunks of amalgam breaking away
- Dark staining that affects appearance
- Pain with biting or temperature
- Gaps between the filling and tooth that trap food
We show you close-up photos from our intra-oral camera so you can see what we see. When replacement is needed, we explain whether a composite filling is enough or whether a ceramic onlay or crown will protect the tooth better.
Cost and insurance basics
Costs vary with size, materials, and the tooth involved. Composites are usually similar in price to amalgam for small restorations and slightly more for larger ones. Ceramics cost more than fillings but provide strength that can prevent fractures and future root canal treatment. Many plans cover tooth-coloured fillings and ceramic crowns based on a fee schedule. Our team checks benefits, submits estimates when needed, and offers direct billing where plans allow assignment of benefits. We can also phase treatment to match your budget and benefit year.
The appointment process at St. Andrew’s Dental Centre
- Assessment
We examine the tooth, review digital X-rays, and discuss your goals. You see detailed images on a chairside screen. - Comfort
We use gentle local anesthesia. Nitrous oxide is available if you feel anxious. - Removal and preparation
Old material and decay are removed carefully. For composites, we prepare a conservative shape that supports bonding. For ceramics, we scan the tooth digitally for a precise model. - Placement
Composites are layered and cured with light, then shaped and polished. Ceramics are bonded with strong dental cements and adjusted for a comfortable bite. - Aftercare
You receive simple home care steps. Most patients return to normal activities the same day.
Everyday maintenance for long-lasting results
- Brush twice daily with fluoride toothpaste
- Clean between teeth every day with floss or interdental brushes
- Wear a night guard if you clench or grind
- Limit frequent sipping of sugary or acidic drinks
- Keep six-month cleanings and ask us to check bite balance
These steps protect both natural enamel and any restoration.
Which option is right for you
If you value a natural look and conservative treatment, tooth-coloured restorations are often the best choice. If you have very large, deep fillings or cracked cusps, a ceramic onlay or crown can restore strength and prevent future emergencies. If an old silver filling is still sound and you like how it looks, monitoring is reasonable until signs of wear or leakage appear.
Ready to update old fillings or plan a new restoration
We are here to help you choose what fits your smile, budget, and lifestyle. Bring your questions and we will walk through photos, options, and clear estimates.
Call St. Andrew’s Dental Centre in Aurora at 905 727 4243 or visit us at 2 Orchard Heights Blvd, Suite 33. Book your consultation today and discover tooth-coloured options that are strong, natural, and built to last.