ArticleBMC oral health2026
Marginal adaptation and fracture resistance of recent 3D printed high-performance polymer and CAD/CAM hybrid ceramic endocrown restorations and designs.
Article in BMC oral health, 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
3 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
AIM (BACKGROUND): The purpose of the current in vitro study was to evaluate and compare the marginal adaptation and fracture resistance of CAD/CAM VITA ENAMIC hybrid ceramic and, 3D printed Nanoksa G-PLUS high-performance polymer endocrown composite restorations constructed for endodontically treated teeth “EET”; considering two distinct coronal preparation designs: standardized anatomic and butt joint. MATERIALS AND
methodsA total of 40 freshly extracted intact human permanent mandibular molars were endodontically treated to receive endocrowns. Specimens were randomly divided into two equal groups “n = 20 each”: Group1 “G1” received 3D printed Nanoksa G-PLUS high-performance polymer, and Group2 “G2” received CAD/CAM VITA ENAMIC hybrid ceramic endocrown restorations. Each main group was further subdivided into two equal subgroups “n = 10 each” based on the coronal preparation design: standardized anatomic “G1A, G2A” and butt joint “G1B, G2B”. All endocrowns were adhesively luted with their respective manufacturer-recommended resin cements. Subsequently, all specimens underwent simulated aging through a chewing simulator and thermo-cycling (CSTC device, CS-4, SD Mechatronik, Germany). Marginal adaptation was quantitatively assessed by measuring the marginal gap distance using a USB Digital stereomicroscope (U500x Digital Microscope, Guangdong, China). Fracture resistance was determined using a universal testing machine (Model 3345; Instron Industrial Products, Norwood, MA, USA). Statistical analysis was performed using IBM SPSS Statistics (version 26), employing a two-way ANOVA followed by Tukey’s post-hoc tests, with significance set at P < 0.05.
resultsVITA ENAMIC specimens exhibited significant higher fracture resistance values; (p < 0.0001) and significant lower marginal adaptation (higher marginal gap values) than those of Nanoksa G-PLUS.
conclusionsSuccessful serviceability of recent endocrown restorations “Nanoksa G-PLUS and VITA ENAMIC” seems critically influenced by the material of construction and the technology of its fabrication. VITA ENAMIC endocrowns combined with anatomic preparation designs yielded the highest fracture resistance, while the Nanoksa G-PLUS endocrowns with butt joint preparation design exhibited the least fracture resistance of all subgroups. CLINICAL SIGNIFICANCE: Understanding the performance characteristics of these advanced technology of restorative biomaterials, and adhesive bonding systems and preparation designs is crucial for optimizing the clinical outcomes and enhancing serviceability and longevity of endocrown restorations in posterior teeth.
Indexed as
Identifiers
What 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.