What is the difference between an inlay and an onlay?
An onlay covers vulnerable cusps; an inlay mainly restores within the tooth’s existing outline.
Before choosing treatment, start with what worries you
Cheonan dental inlays and onlaysWhy is a simple filling no longer being recommended?
You may expect a replacement filling and feel unsettled when an inlay, onlay or crown is suggested instead. The names can sound like different price levels rather than different ways to support the tooth. The useful question is which parts of your tooth remain strong and which need protection.
You can take time to understand your options before deciding.
01 / The questions behind the treatment name01 02 03
You deserve to understand what this means for your life.
Why not use another direct filling?
The remaining structure and bite may require a different restoration, but the reason should be explained.
Can the plan change after the old filling is removed?
Yes. Newly visible damage may affect the required protection.
02 / Benefits and burdens
Benefits and burdens
What may improve
A selected coverage design can restore damage while retaining suitable tooth structure.
What to weigh up
Preparation, bonding and later repair needs depend on the defect and material.
The question that helps you choose
Choose the coverage the tooth requires, rather than the smallest or most expensive label.
03 / Make sense of your own situation01 02 03
What changes the choice of treatment?
Understand the coverage difference
An inlay fits within a defect, while an onlay covers one or more cusps when that protection is needed. A crown covers more of the tooth. The appropriate boundary depends on the damage, cracks, remaining structure and bite. Ask to see which area needs support rather than choosing from the restoration name alone.
Compare materials and bonding conditions
Different materials have different handling, appearance and maintenance considerations. The location of the margin, moisture control and forces also matter. No material is automatically superior in every tooth. Discuss the rationale for the proposed material and whether a direct filling or another coverage design is a suitable alternative.
Allow for findings during preparation
Removing an old restoration can reveal damage that was not fully visible at the first examination. This may change the required coverage. Ask how such changes will be discussed before more treatment proceeds. Temporary protection, the final fit and review of the bite are also parts of the treatment plan.
Benefits and burdens
Potential benefits
An onlay can protect selected cusps where appropriate.
Restoration boundaries can be tailored to the remaining tooth and defect.
Benefits and burdens
Limitations and risks
Fracture, debonding, sensitivity and recurrent decay are possible.
An inlay alone may not protect a weakened or cracked cusp adequately.
Restoring a defect with an inlay
An inlay is made outside the mouth and fitted into a defect. Suitability depends on the defect and remaining tooth.
- 01
Prepare the defect
The area needing treatment is prepared with a defined shape and margin.
- 02
Record and fabricate
Tooth and bite records guide fabrication of a matching restoration.
- 03
Try in and bond
Fit and contacts are checked before material-appropriate bonding.
- 04
Finish and check
Excess cement is removed and bite and neighbouring contacts are checked.
Sources
Explore the treatment in video
Inlay treatment
The video shows preparation and recording of the cavity, followed by fitting, bonding, and finishing a custom inlay. The remaining tooth structure determines whether an inlay is suitable.
Inlay treatment
This video contains Korean text.
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Use the player controls to watch the treatment explanation.
04 / Treatment and everyday life
Plan for the time between appointments, too.
Follow instructions for any temporary restoration and report loosening.
Have a high bite, lasting sensitivity or food trapping checked after placement.
Costs, time and follow-up
Ask for a plan you can understand and manage.
What does the estimate include?
Ask which examinations, temporary stages, final treatment, retainers or maintenance, and repairs are included. The scope depends on your findings and chosen plan. A headline price cannot describe every person’s total cost. Ask how a change in the plan would be explained and agreed before it goes ahead.
Clinic fee information →How will visits fit into my life?
Bring previous records if you have them, your medication list and the practical limits on travel or time off work. Ask what each visit is for, what may change the timetable, and who to contact if something feels wrong. You do not need to promise to start treatment at the first conversation.
Location and visiting information →05 / Questions worth asking again
Uncertainty is a good reason to ask another question.
Is ceramic always better than another material?
No. The site, remaining tooth, bonding and bite should guide the choice.
Does an onlay always avoid a crown later?
No future treatment can be ruled out; the goal is suitable protection for the current condition.
Why might a crown become necessary?
The extent or position of newly identified damage may require broader coverage.
How do I compare estimates?
Check the proposed coverage, material, temporary stage and final fit rather than comparing names alone.
Take these questions to your consultation
After your questions, meet the people you may speak with
Choose a conversation that addresses your concerns.
Read about the clinicians and their areas of practice. In your consultation, ask how the proposed plan answers your own priorities and what remains uncertain. This guide does not establish your diagnosis or promise an individual result.
Further explanation
Videos to support the conversation
Existing clinic videos are in Korean; captions and language support vary. They are general explanations, not a prediction of your result. Ask about any point that differs from your personal treatment plan.
Read alongside this guide
Compare the options that matter to you.
Composite Dental Fillings →Dental Crowns →Tooth Decay Treatment →Find the guide closest to your concern →
The clinic is at 14 Buldang 34-gil, Seobuk-gu, Cheonan, South Korea. Ask about appointment arrangements and language support before travelling. This page does not indicate a branch in another city.
Sources you can check
Professional and public health information
These sources explain general clinical principles. They do not verify this clinic’s results or imply that a clinician has reviewed this page. Healthcare systems and fees in other countries differ from Korea.