Catching Decay Before It Costs You a Crown
A dental filling repairs a tooth damaged by decay or a small chip: the decay is cleaned out and the space is rebuilt with tooth-coloured material, which is the only kind of filling we place at Alexandra Hills Dental. In a lot of Redlands households, the cavity cycle runs on a familiar loop. Saturday sport, a sports drink sipped through the game and the drive home, kids who “forgot” to floss again, and humid summers where everyone’s grazing on whatever’s in the fridge. Decay loves that routine, and it rarely hurts until it’s well established.
For families in Redland Bay, QLD, fillings are one of the most common general dental treatments used to repair early decay before it becomes a bigger problem. Our dentists can assess the area, explain whether a filling is the right treatment, and discuss how the rest of your oral health is tracking at the same visit. If you want to book ahead, contact Alexandra Hills Dental by phone or email and our team can help arrange an appointment.
For people around the bay and nearby QLD suburbs, regular general dentistry can make it easier to catch small problems before they become expensive ones. If you have questions before visiting, contact the practice by phone or email and one of our dentists can help with the next step.
A filling may be a small procedure, but it can have both a practical and cosmetic benefit when the damaged area is visible in your smile. Your dentist can explain how the filling will be shaped and matched to the surrounding dental structure before work begins.
The Acid Cycle That Creates a Hole
Every time you eat or drink something sugary or starchy, the bacteria in plaque feed on it and produce acid. That acid drops the pH around your teeth, and once it falls below roughly 5.5, enamel starts to lose minerals. Saliva then neutralises the acid and helps put some of those minerals back.
The problem isn’t one treat. It’s how often the acid attacks happen. Sipping a sports drink over an hour, grazing on snacks all afternoon, or keeping a lolly in your mouth gives the enamel no recovery time. Eventually, more mineral is lost than replaced, a weak spot forms, and it becomes a hole.
- Sugar or starchEvery time you eat or drink something sugary or starchy, the bacteria in plaque feed on it and produce acid.
- pH dropsOnce the pH around your teeth falls below roughly 5.5, enamel starts to lose minerals.
- Saliva repairsSaliva neutralises the acid and helps put some of those minerals back.
- Too many attacksSipping, grazing and lollies give enamel no recovery time, so a weak spot forms and becomes a hole.
This is why preventive dentistry matters just as much as repairing decay after it appears. Our dentists can look at diet, brushing, flossing, and other habits that affect long-term dental health. For people from Redland Bay and nearby Redland suburbs, regular general dentistry services can help identify small problems before more extensive treatment is needed.
If you’re unsure whether a dark spot or sensitivity needs attention, book a general dentistry check rather than waiting for pain. Early advice from our dentists can protect your oral health and potentially keep the repair smaller.
Your dentist can also explain whether several areas need attention and whether multiple dental treatments should be completed together or spread across separate visits.

Why Cavities Rarely Hurt Until They Are Deep
Enamel has no nerves. Decay can eat through it quietly without a twinge. You usually only start to feel something once it reaches the dentine underneath, which has tiny channels leading towards the nerve. Even then, it may just be a bit of sensitivity to sweet or cold.
| Where the decay is | What you feel | What it usually means |
|---|---|---|
| Enamel | Nothing. Enamel has no nerves | Caught at a check-up, a smaller, simpler and cheaper filling |
| Dentine | Maybe a bit of sensitivity to sweet or cold | Still often fixable with a filling |
| Close to the nerve | An actual ache | A higher chance of needing a root canal or crown |
By the time a tooth actually aches, the decay is often close to the nerve. We hear, “but it didn’t hurt!” all the time, and that’s exactly why small cavities get missed without regular check-ups and X-rays. Catching decay early means a smaller, simpler, and cheaper filling, and a much better chance of avoiding a root canal or crown later.
A routine dental check-up gives your dentist a chance to look for early decay before pain starts. That is especially useful for children, teenagers and adults who have had multiple fillings before. Early treatment is usually simpler, and in many cases it can help preserve more natural tooth structure.
If you live around Redland Bay or another nearby QLD suburb, you can book a check-up even when nothing hurts. General dentistry is often most useful before symptoms appear.
If you would like clarification before your visit, you can also email the practice with a general dental question. For pain or anything urgent, calling is still the better option.
White Composite Versus Old Amalgam
For decades, the standard filling was amalgam, the silver-coloured material many adults still have in their back teeth. Today, tooth-coloured composite resin is used far more often, and it’s what we use at Alexandra Hills Dental.
Composite is bonded to the tooth, so it often needs less healthy tooth removed than an amalgam filling. It can be shaded to match your teeth closely, so the result is barely noticeable when you smile. If you have old amalgam fillings that are still sound, there’s usually no need to replace them just because they’re silver. We’ll tell you if one is cracked or leaking and actually needs attention.
For visible areas, composite also has an obvious cosmetic advantage because it can be matched closely to your natural smile. Cosmetic appearance is not always the main reason for a filling, but it can matter when the repaired area shows when you speak or smile. Your dentist can explain what result is realistic before the dental treatment begins.
Our dentists can also check older fillings as part of routine dentistry. If one is still doing its job, there is usually no reason to replace it purely for appearance.
Where an old filling does need replacing, your dentist can discuss whether a tooth-coloured option offers both the required strength and the cosmetic result you want. For front areas in particular, shade and shape can make a noticeable difference to the finished smile.
Glass Ionomer and Where It Fits
Glass ionomer is another tooth-coloured material. It bonds chemically to the tooth and releases a small amount of fluoride over time, which can help protect the area against further decay. It’s not as strong or as polished-looking as composite, so it’s generally used where chewing forces are lighter, such as near the gum line, in baby teeth, or as a temporary filling.
| Material | Colour | Main strengths | Typically used for |
|---|---|---|---|
| Composite resin | Tooth-coloured | Natural look, bonds to tooth, conserves structure | Most front and back fillings |
| Glass ionomer | Tooth-coloured | Releases fluoride, bonds chemically | Gum-line areas, baby teeth, temporary fillings |
| Amalgam | Silver | Long track record, durable | Older fillings you may already have |
For children, glass ionomer can sometimes be useful where a temporary or lower-stress restoration is needed. Our dentists will choose materials according to the location, bite, and overall dental health, rather than using the same material for every case.
Different materials also have different cosmetic qualities. Your dentist will consider where the filling sits, how visible it is in your smile, and how much force the area takes before choosing the most appropriate dental material.
Numbing, Cleaning Out, Layering, Polishing
- Numb and clean outLocal anaesthetic first, then every bit of decay is removed, and the tooth is cleaned.
- Bond and layerA bonding agent is applied, then composite is built up in layers and set with a curing light.
- Shape and polishWe sculpt it to your bite, check how you close, and polish it smooth.
The whole process for a typical filling is straightforward, and for many people the injection is the part they notice most. If you’re nervous, we offer happy gas, and we’ll explain each step before it happens.
We also use composite to repair chipped or broken teeth, which can be a far less expensive option than removing a tooth and replacing it with an implant.
For people coming from Redland Bay, QLD, most routine filling treatments can be completed in a single visit. If several areas need attention, your dentist may recommend staging the work over more than one appointment.
If you want to know the likely fee before starting, contact the practice and ask about costs and payment options. Our team can explain the expected payment arrangements before you book.
If several dental treatments are being planned, your dentist can also explain which ones should be prioritised first. Cosmetic repairs that are not urgent can sometimes be organised separately from fillings needed to stop active decay.
Sensitivity After a Deep Filling
When decay has come close to the nerve, the tooth can be sensitive to hot, cold, or biting for a while after the filling. That’s the nerve settling down after being irritated, and it usually eases over days to a few weeks. Using a sensitive toothpaste can help.
Call us if
- The sensitivity is getting worse rather than better
- Pain lingers long after a hot or cold drink
- The tooth starts throbbing on its own
- Your bite feels high on the filled tooth

Call us if the sensitivity is getting worse rather than better, if you get pain that lingers long after a hot or cold drink, or if the tooth starts throbbing on its own. Those can be signs the nerve isn’t recovering. And if your bite feels high on the filled tooth, come back for a quick adjustment.
If something does not feel right after treatment, contact the practice rather than waiting for your next routine visit. A quick review by a dentist can determine whether the filling simply needs adjustment or whether further care is required.
You can also email the practice with a general question if the issue is not urgent. If the pain is significant or worsening, call instead so our dentists can advise you more quickly.
Your dentist may also ask how the filling feels when you bite and whether the area looks natural in your smile, particularly when the repair is near the front.
How Long a Filling Should Last
There’s no fixed expiry date. How long a filling lasts depends on its size, where it is, how hard you bite or grind, and how well you look after it. Small fillings in low-stress areas can last many years, while large fillings on back teeth work much harder. The edge where the filling meets the tooth is the weak point, so brushing, flossing, and regular check-ups are what keep it going.
Signs a filling may need attention
- A rough or chipped edge your tongue keeps finding
- Food catching in the same spot
- A dark line around the edge
- New sensitivity in a tooth that used to be fine
Signs a filling may need attention include a rough or chipped edge your tongue keeps finding, food catching in the same spot, a dark line around the edge, or new sensitivity in a tooth that used to be fine. None of these mean an emergency, but they’re worth mentioning at your next check-up. Often a small repair or a replacement filling is all that’s needed, as long as it’s picked up before decay gets underneath. We’ll show you what we’re seeing on the X-ray or with a photo, so you can make the call with all the facts.
Routine dentistry and preventive dental services are what help fillings last. Your dentist can also check whether grinding, diet, or cleaning habits are putting extra pressure on existing restorations.
Looking after your oral health between visits matters just as much as the filling itself. If you are due for a general dentistry check, book with our team before small changes become bigger problems.
If you have several older restorations, your dentist can review them together and let you know which dental treatments are genuinely needed and which fillings can simply continue to be monitored.
When Decay Has Gone Too Far for a Filling
A filling replaces lost tooth, but it doesn’t hold the walls of the tooth together. When decay has destroyed a large part of the tooth, a big filling can leave the remaining walls weak and prone to cracking, and that’s when a crown is often the better option. If decay has reached the nerve, root canal treatment may be needed first. In the worst cases, the tooth can’t be saved. That’s the whole point of early detection: a small filling now can save you a crown later.
| Treatment | When it comes into play |
|---|---|
| Filling | Decay caught early, while the tooth's walls are still strong |
| Crown | Decay has destroyed a large part of the tooth, leaving the walls weak and prone to cracking |
| Root canal treatment | Decay has reached the nerve |
| Extraction | In the worst cases, when the tooth can't be saved |
This is where your dentist will explain the difference between a simple filling and more involved dental treatments. The aim of good general dentistry is to use the least invasive option that is still likely to last.
Our dentists can also explain the likely costs of the different options and any payment arrangements available if more extensive work is required.
If a visible area needs more extensive repair, cosmetic considerations can also become part of the discussion. Your dentist can explain how different dental treatments may affect the finished appearance of your smile.
Kids, Sports Drinks, and the Weekend Sugar Load
Saturday sport is great for kids. The drinks that often come with it, less so. Most sports drinks are both sugary and acidic, and sipping them through a game and the drive home gives teeth a long acid bath.
A few easy swaps make a real difference
- Make water the default drink at training and games
- Save sports drinks for when they're genuinely needed, and drink them rather than sipping slowly
- Rinse with water after sweet drinks or snacks
- Wait a little while after acidic drinks before brushing, as enamel is softer straight afterwards
- Brush twice daily with fluoride toothpaste and help younger kids floss until they've got the hang of it
For children in Redland Bay and surrounding Redland suburbs, regular dental visits can help catch early decay before it becomes a larger problem. Our dentists can also talk with families about brushing, snacks, drinks and other habits that affect long-term oral health.
Families around the bay can often book siblings together, making general dentistry visits easier to fit around school and sport.
Keeping fillings small can also help preserve the appearance of a child’s smile. Your dentist can explain which dental materials are suitable for younger patients and when cosmetic appearance matters alongside function.

Free Fillings for Eligible Kids Under Medicare
The Medicare Child Dental Benefits Schedule (CDBS) covers basic dental services, including fillings, for eligible children. Not sure if your child is eligible? Check your Medicare online account or ask our team to help.
| CDBS at a glance | Details |
|---|---|
| Our offer | Free dental care for eligible children aged 2 to 17 |
| Benefit cap | Up to $1,158 per eligible child over two consecutive calendar years in 2026, according to Services Australia |
| What it covers | Basic dental services, including fillings |
| What it does not cover | Orthodontic or cosmetic work |
| Eligibility | Depends on Medicare and on the family receiving certain government payments, such as Family Tax Benefit Part A |
If you are unsure about eligibility, contact the practice by phone or email, and our team can explain what information you may need before the visit. For families who are not covered by the scheme, we can also explain available payment options and expected fees before treatment begins.
If you need a written estimate or want to clarify a payment question, email the practice or contact us before you book. That way you know what to expect before the appointment.
For general questions about children’s fillings or other dental treatments, email can be convenient when the issue is not urgent. If your child is in pain, call so a dentist can advise you sooner.
| Option | How it works |
|---|---|
| Health fund | Preferred provider for CBHS, Australian Unity, HCF, Medibank and Bupa, with claims on the spot through HICAPS |
| Payment plans | Three payment plan options, including AfterPay and Zip Pay |
| SuperCare | A superannuation-based option for funding dental treatment |
| Kids | Free for eligible children aged 2 to 17 under the Medicare Child Dental Benefits Schedule |

Book a Filling Appointment From Redland Bay
A sharp edge, a dark spot, a twinge when you bite into ice cream: none of them are emergencies, but all of them are cheaper to sort out this month than next year. Book online or call 07 3824 4488, and we can usually see the kids at the same visit.
If a filling has dropped out and the tooth is sore, ring before 10 am for a same-day appointment. The emergency check-up is $99, with an X-ray included where it’s needed.
Know a family whose Saturday routine sounds a lot like the one at the top of this page? Pass it on. The sports drink swaps alone can save a few fillings.
Alexandra Hills Dental provides general dentistry for people from Redland Bay, QLD, Victoria Point and surrounding Redland communities. Whether you need a routine filling, replacement filling, chipped-tooth repair or simply want to check your oral health, our dentists can explain your options clearly.
To book, contact the practice by phone or online. You can also email us with general questions before your visit. If cost is a concern, ask about fees, payment options and expected charges before the appointment.
For families around the bay, our dentists can also help organise general dentistry appointments for more than one family member where suitable. Keeping regular visits in the diary can make it easier to protect both your oral health and your smile.
If appearance is part of your concern, ask your dentist about the cosmetic side of tooth-coloured fillings and other dental treatments. Composite can often be shaped and polished so the repaired area blends naturally into your smile.
For non-urgent questions about fillings, cosmetic options or upcoming dental treatments, you can email Alexandra Hills Dental before your appointment.
Dental Fillings Redland Bay: Frequently Asked Questions
What kind of fillings do you use?
Tooth-coloured fillings only. We use composite resin for most front and back fillings, and glass ionomer where chewing forces are lighter, such as near the gum line, in baby teeth, or as a temporary filling.
Should I replace my old silver fillings?
If they're still sound, there's usually no need to replace them just because they're silver. We'll tell you if one is cracked or leaking and actually needs attention.
Why didn't my cavity hurt?
Enamel has no nerves, so decay can eat through it quietly. You usually only start to feel something once it reaches the dentine, and by the time a tooth aches, the decay is often close to the nerve.
How long does a filling take?
Most routine filling treatments can be completed in a single visit. If several areas need attention, your dentist may recommend staging the work.
Is sensitivity normal after a filling?
After a deep filling, sensitivity to hot, cold or biting is common and usually eases over days to a few weeks. Call us if it's getting worse rather than better.
How long do fillings last?
There's no fixed expiry date. It depends on the filling's size, where it is, how hard you bite or grind, and how well you look after it.
Are fillings free for children?
The Medicare Child Dental Benefits Schedule covers basic dental services, including fillings, for eligible children. At Alexandra Hills Dental, eligible children aged 2 to 17 can receive free dental care under the scheme.
What if a filling falls out?
If a filling has dropped out and the tooth is sore, ring before 10 am for a same-day appointment. The emergency check-up is $99, with an X-ray included where it's needed.