Evidence map›Paper›PMID 39779583›Full record

ArticleClinical oral investigations2025

Fracture load of feldspar ceramic crowns: effects of surface treatments and aging.

Andrea Coldea, Bogna Stawarczyk, John Meinen, Valerie Lankes, Michael V Swain, Malgorzata Roos

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In one paragraph

Article in Clinical oral investigations, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

2 citing papers in PubMed.

  1. Article
  2. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors.

Andrea ColdeaDepartment of Prosthetic Dentistry, University Hospital, LMU Munich, Munich, Germany. andrea.coldea@med.uni-muenchen.de.
Bogna StawarczykDepartment of Prosthetic Dentistry, University Hospital, LMU Munich, Munich, Germany.
John MeinenDepartment of Prosthetic Dentistry, University Hospital, LMU Munich, Munich, Germany.
Valerie LankesDepartment of Prosthetic Dentistry, University Hospital, LMU Munich, Munich, Germany.
Michael V SwainSchool of Aerospace, Mechanical and Mechatronic Engineering, The University of Sydney, Sydney, Australia.
Malgorzata RoosEpidemiology, Biostatistics and Prevention Institute, University of Zurich, Zurich, Switzerland.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesTo compare the impact of intaglio surface treatments - airborne particle abrasion and hydrofluoric acid (HF) etching - of feldspar ceramic (FEL) crowns on the fracture load (FL) and to investigate the effects of abutment materials and artificial aging. The aim was to assess whether etching could be replaced by an alternative surface roughening method. MATERIALS AND

methodsFEL crowns had their intaglio surfaces either abraded (25 µm Al

resultsFor crowns bonded to CoCrMo abutments, aging affected the FL and Weibull modulus, but pretreatment methods did not. For initial specimens, airborne abraded and etched crowns were equivalent within a 400N bound, however, for aged specimens, equivalence was inconclusive. For crowns bonded to polymer-abutments, pretreatment and aging influenced the FL. Etching decreased the initial FL by over 420N compared to airborne abraded and untreated specimens. After aging, untreated crowns' FL decreased by 528N, while airborne abraded and etched specimens showed no aging effect.

conclusionsAirborne particle abrasion of FEL crowns' intaglio surfaces did not negatively impact FL and was comparable to etched crowns. Conclusions regarding pretreatment methods and aging differed between CoCrMo- and polymer-abutments. CLINICAL RELEVANCE: Airborne particle abrasion may be an alternative procedure for the intaglio surface treatment of FEL crowns prior bonding.

Indexed as

Aluminum SilicatesCrownsDental Restoration FailureDental Stress AnalysisMaterials TestingPotassium CompoundsSurface PropertiesAcid Etching, DentalCeramicsDental AbutmentsDental EtchingDental PorcelainHydrofluoric AcidAluminum SilicatesDental PorcelainfeldsparHydrofluoric AcidPotassium CompoundsAirborne particle abrasionEtchingFeldspar ceramicFracture load

Identifiers

PMID39779583
PMCPMC11711631

What OpenQuestion holds

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.