The core difference
Minimal-prep involves a small amount of reduction to create room for the shell, while no-prep is an approach that may minimize or skip reduction under specific conditions. Both vary significantly by individual, and neither can be called universally better.
How tooth condition affects the choice
No-prep may be considered when teeth are already smaller or positioned inward, while minimal-prep may lead to a more natural result when tooth size is average or alignment is uneven. The final choice depends on mock-ups and exam findings.
| Minimal-prep | No-prep | |
|---|---|---|
| Candidacy | May be considered for average-sized or unevenly aligned teeth | May be considered for smaller or inward-positioned teeth |
| Enamel impact | A small amount of enamel reduction may be needed | Reduction may be minimized, but not guaranteed to be zero |
| Aesthetics | More flexible thickness control for shape correction | Can look bulky if tooth conditions aren't suitable |
| Long-term considerations | Requires monitoring of prepared areas and regular check-ups | Requires ongoing checks on bond integrity and fit with neighboring teeth |
- Candidacy
- May be considered for average-sized or unevenly aligned teeth
- Enamel impact
- A small amount of enamel reduction may be needed
- Aesthetics
- More flexible thickness control for shape correction
- Long-term considerations
- Requires monitoring of prepared areas and regular check-ups
- Candidacy
- May be considered for smaller or inward-positioned teeth
- Enamel impact
- Reduction may be minimized, but not guaranteed to be zero
- Aesthetics
- Can look bulky if tooth conditions aren't suitable
- Long-term considerations
- Requires ongoing checks on bond integrity and fit with neighboring teeth
Real cases reflecting different design approaches
In both approaches, the final decision is made by a dentist based on tooth condition, bite, and aesthetic goals combined. Neither option is always superior.
Frequently asked questions
This article is general information, not a diagnosis or a recommendation for treatment. Individual results vary, and any treatment plan requires an in-person examination at a Partner clinic.