What can composite bonding do for my smile?

How tooth-coloured bonding can close gaps, cover discolouration and rebuild teeth, often without veneers.

Dr Bill Kalis — Saturday 14 November 2026

Composite bonding can close gaps, cover discolouration, repair chips and rebuild worn or uneven teeth, usually with little or no removal of your natural tooth. Many people come in believing they need porcelain veneers. Often, bonding does what they are hoping for in a more conservative way.

I am Dr Bill Kalis, principal dentist at Padstow Dental in Padstow, Sydney. We always look for the most conservative option that will achieve what you want, and composite bonding is frequently it.

What is composite bonding?

Composite bonding is a tooth-coloured resin that is applied to the tooth, shaped by hand and set with a light. It is matched to the colour of your teeth and polished so it blends in. Because it is added to the tooth, the natural tooth underneath is usually left intact.

What can composite bonding do?

• Close gaps between teeth, including a gap between the two front teeth (a diastema)

• Cover discolouration that whitening cannot change

• Repair chipped or broken edges

• Build up worn or short teeth

• Even out teeth that are slightly uneven in shape or length

• Reshape small or peg-shaped teeth

• Cover exposed root surfaces near the gum line

Do I need veneers, or will bonding do?

It depends on your teeth and what you want to change. Porcelain veneers are a good option in some cases, but they are not always the answer. A ceramic veneer usually needs some enamel removed from the front of the tooth, and that is permanent.

Bonding is worth considering first when the teeth are healthy and the changes are small to moderate, such as closing a gap, lengthening an edge or covering a mark. If bonding will achieve the result, you keep more of your own tooth, and other options remain open to you in the future.

How do bonding and porcelain veneers compare?

Composite bonding

• Added to the tooth, usually with little or no tooth removal

• Often completed in one visit

• Can be repaired, added to or re-polished

• Can pick up stains and chip over time, so it needs upkeep

• Generally does not last as long as porcelain

Porcelain veneers

• Usually need some enamel removed, which is permanent

• Made in a laboratory, over two visits

• Resist staining well and keep their polish

• Generally last longer

• A larger commitment in tooth structure and cost

Read more about veneers and crowns.

What happens at a bonding appointment?

1. We discuss what you would like to change and check that your teeth and gums are healthy

2. We choose the shade to match your teeth

3. The tooth surface is prepared so the resin will bond to it

4. The composite is applied in layers, shaped and set with a light

5. It is trimmed and polished, and we check your bite

For small changes this is often done in one visit, and frequently without an injection. We tell you beforehand what your case involves.

Should I whiten my teeth first?

Usually, yes, if you are considering whitening. Composite does not change colour with whitening, so we whiten first and then match the bonding to your new shade. Read about Zoom whitening at Padstow Dental.

How long does composite bonding last?

It varies with the size of the bonding, your bite and how you look after it. Composite can stain with tea, coffee, red wine and smoking, and it can chip, particularly on biting edges. It can be re-polished and repaired, which is one of its advantages. Results vary between patients.

When is bonding not the best choice?

Bonding is less suited to teeth that are heavily filled or cracked, to large changes in shape or colour across many teeth, and to people who grind or clench heavily. In those cases a crown, a veneer or another approach may serve you better, and we will say so.

How do I look after bonded teeth?

• Brush and clean between your teeth every day

• Avoid biting hard objects such as pens, ice and fingernails with bonded front teeth

• Wear a night guard if you grind

• Attend regular reviews, where bonding can be checked and re-polished

Common questions about composite bonding

Does composite bonding damage my teeth?

It is usually added to the tooth with little or no removal of enamel, which is why it is considered a conservative option.

Can bonding close the gap between my front teeth?

Often, yes. Closing a diastema is one of the most common uses for bonding.

Does it hurt?

Small additions are frequently done without an injection. We tell you what to expect for your case.

Can bonding be removed or changed later?

In most cases it can be repaired, added to or replaced, and it does not rule out veneers or other treatment in the future.

How much does it cost?

It depends on how many teeth are involved and how much is being added. We give you a written estimate after your assessment.

Thinking about veneers?

Come and talk to us first. Bonding may achieve what you are looking for while keeping more of your own teeth. Call Padstow Dental on 02 9773 4775 or send us an enquiry.

Fees are a guide only. Treatment costs are confirmed after your consultation.

Written by Dr Bill Kalis, Principal Dentist at Padstow Dental. BDS (Hons), University of Sydney, 1994. Graduate Certificate in Clinical Dentistry, University of Adelaide, 2007. Past State and Federal President of the Australian Society of Implant Dentistry. Dr Kalis is a general dentist with a focus on implant, surgical and IV sedation dentistry.