Presenting Clinical Problem
- A distorted existing amalgam restoration compromising tooth structure
- Risk of further tooth fracture without a protective restoration
- Patient preference for a single-appointment treatment approach
- Clinical assessment indicated the tooth was suitable for a ceramic restoration
The primary objective was to restore structural integrity while minimising the number of treatment appointments.
Treatment Approach
Phase 1: Assessment and digital planning
- Examination of the existing restoration and remaining tooth structure
- Intraoral digital scanning to capture the tooth preparation and adjacent anatomy
- Computer-aided design of the restoration using CEREC software
- Shade selection to match the adjacent natural teeth
Phase 2: Same-visit crown fabrication
- Tooth preparation to remove compromised structure and create appropriate geometry
- Digital impression using the intraoral scanner
- CAD design of the crown customised to the individual anatomy
- In-office milling of a ceramic block to create the restoration
- Characterisation and glazing as required
Phase 3: Crown placement
- Trial fitting and occlusal (bite) adjustment
- Final cementation using appropriate bonding protocols
- Final polishing and bite verification
- Post-placement care instructions
Clinical Outcome
The CEREC same-day system allowed treatment to be completed in a single extended appointment. The digital workflow removed the need for traditional impression materials and laboratory fabrication time, though the single-visit approach requires longer chair time than a traditional two-visit crown procedure.
Individual responses to crown treatment vary and outcomes cannot be guaranteed. CEREC crowns have material properties similar to laboratory-fabricated ceramics but may have limitations in complex cases requiring extensive customisation. All ceramic crowns can fracture, debond or develop marginal discrepancies over time, and crowned teeth remain at risk of root canal complications, fracture or recurrent decay. Crown longevity typically ranges from 10 to 15 years but varies with individual factors. Suitability for a same-day crown needs to be confirmed at a clinical consultation.
Frequently Asked Questions for Greenvale Patients
How do CEREC same-day crowns compare to traditional laboratory crowns?
CEREC crowns offer single-visit completion and avoid the temporary crown phase. Material properties are comparable to many laboratory ceramics for back teeth. Traditional laboratory processes may offer advantages for complex aesthetic cases or certain material choices. Both approaches have similar longevity when properly executed.
What are the limitations of same-day crown treatment?
Same-visit treatment requires an extended appointment (typically 2 to 3 hours). Not all situations are suitable, particularly cases needing significant soft-tissue management, complex bite adjustments or extensive aesthetic customisation. Multiple crowns may require several appointments, and technology availability and practitioner experience affect outcomes.
Can CEREC crowns fracture or fail?
Yes. CEREC crowns have similar failure modes to traditional crowns, including fracture, debonding, marginal breakdown and recurrent decay. Failure rates are comparable to laboratory-fabricated crowns when case selection is appropriate. Factors affecting longevity include bite forces, grinding or clenching habits, oral hygiene and material properties.
To find out whether a same-day CEREC crown is suitable for your situation, you are welcome to book a consultation at Greenvale Dental House.
