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Digitally manufactured partial coverage restorations: is it time to down the impression trays or still a work in
Amandeep Singh Sarkaria1, Alice Duke2
1CT2 Restorative Dentistry, Aberdeen Dental Hospital and Institute of Dentistry, Aberdeen, Scotland, UK. amandeep.sarkaria@nhs.scot.
Evidence-Based Dentistry
|January 19, 2024
Summary
This systematic review found no consensus on whether digital or conventional workflows are superior for fabricating partial coverage restorations like inlays and onlays. Both methods showed comparable fracture strength and survival rates in limited studies.
Area of Science:
- Dental Materials Science
- Restorative Dentistry
- Digital Dentistry
Background:
- The fabrication of partial coverage restorations (inlays, onlays, overlays, endocrowns) traditionally relies on conventional workflows.
- Advancements in digital dentistry offer a fully digital workflow as an alternative.
- A direct comparison of these workflows is crucial for clinical decision-making.
Purpose of the Study:
- To systematically review and compare the outcomes of fully digital versus fully conventional workflows for partial coverage restorations.
- To evaluate key parameters including accuracy, fit, success, survival, complications, and patient-reported outcomes.
Main Methods:
- A systematic review was conducted using multiple databases (PubMed, EMBASE, Scopus, Web of Science, Cochrane Library).
- Studies were screened based on a PICOS framework, including both clinical and in vitro designs.
- Risk of bias was assessed using adapted checklists (CRIS, RoB2).
Main Results:
- Seventeen studies evaluated marginal and internal fit, with mixed results: eight favored conventional, nine favored digital.
- Fracture strength was similar between digital and conventional workflows in three studies.
- One study reported similar 7-year survival rates for pressed and CAD/CAM ceramic restorations; no data on patient-reported outcomes or endocrowns were found.
Conclusions:
- There is currently no consensus on the superiority of digital over conventional workflows for partial coverage restorations.
- Further research is needed, particularly on patient-reported outcomes and specific restoration types like endocrowns.
