ReviewOdontology2026
Effect of layer thickness on the integrity of additively manufactured interim crowns: a systematic review and meta-analysis.
Review in Odontology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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.
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.
Who cites it
0 citing papers in PubMed.
No citing paper in PubMed yet.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
6 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Printing parameters such as layer thickness can influence the integrity of printed interim crowns and their clinical performance. Adjustments to the thickness of each printed layer can influence the mechanical strength and attributes such as aesthetics, marginal adaptation, and surface quality, ultimately impacting the durability of interim crowns. This systematic review aimed to compare the 50 μm layer thickness with other protocols and evaluate the effect of layer thickness on the physical and mechanical properties for additively manufactured interim crowns. Two researchers independently searched for relevant studies published from August 2019 to September 2025 using electronic databases (PubMed/MEDLINE, Scopus, Web of Science and LILACS). The PICO question was, "Does a layer thickness of 50 μm promote better physical properties for 3D printed interim crowns when compared to other thicknesses?" Studies that compared the properties of different printing layer thickness were included. Sixteen in-vitro studies were selected for qualitative analysis. Regarding flexural strength, marginal and internal fit and hardness, the meta-analysis indicated difference, with better results for the 50 μm layer thickness (flexural strength, p = 0,001; marginal fit, p < 0,00001; hardness, p = 0,05). When evaluating surface roughness and trueness the 25 μm, 20 μm and 50 μm thicknesses had similar performances. Compared to other thicknesses, the 50 μm layer presented better results for flexural strength, hardness and marginal and internal fit. When analyzing surface roughness and trueness, layers thinner than 50 μm yielded similarly satisfactory results.
Indexed as
Identifiers
41811403What OpenQuestion holds
Registered trials
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.