ArticleJournal of prosthodontics : official journal of the American College of Prosthodontists2026
Trueness, precision, and internal fit of additively and subtractively manufactured definitive resin-based crowns.
Article in Journal of prosthodontics : official journal of the American College of Prosthodontists, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
What it found
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The trial behind it
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Who cites it
3 citing papers in PubMed.
- Three-Dimensional Printed Materials for Definitive Ceramic and Resin Restorations: A Scoping Review.Materials (Basel, Switzerland) · 2026Review
- Dimensional Accuracy and Adaptation of Monolithic Zirconia Crowns Fabricated by a Novel Material Jetting Technique: An In Vitro Study Based on Clinical Laboratory Data.International dental journal · 2026Article
- Influence of repetitive diamond bur use on the trueness and surface roughness of subtractively manufactured PICN restorations.Biomaterial investigations in dentistry · 2026Article
Corrections and comments
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Authors and funding
4 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purposeTo assess the fabrication trueness, precision, and internal fit of additively manufactured (AM) and subtractively manufactured (SM) resin-based definitive crowns. MATERIALS AND
methodsA maxillary right first molar complete-coverage crown was designed and fabricated using 2 additively manufactured [Pro Resins Crown X (AM-S); Straumann USA LLC and Flexcera Smile Ultra+ (AM-F); Desktop Health] and 2 subtractively manufactured [Shofu HC (SM-S); SHOFU Dental Corp and Brilliant Crios (SM-C); Coltene/Whaledent AG] resins (n = 15). The crowns were scanned using an intraoral scanner (IOS) and then seated onto the abutment tooth and rescanned. Fabrication trueness was evaluated by superimposing test data (TD) over the reference crown and computing the root mean square (RMS, µm) error for overall, intaglio, and margin surfaces. Internal fit was evaluated by measuring the average gap distance between the crown and abutment tooth (µm) using a modified triple scan protocol (TSP) for overall, occlusal, and axial surfaces. One-way ANOVA followed by post hoc Tukey's comparison tests was used to analyze the data (α = 0.05).
resultsSignificant differences were observed among the resin-based crown materials for trueness (RMS), precision deviation, and internal fit (p < 0.001). AM-F had the lowest intaglio RMS value. Margin RMS values for AM-F and AM-S were significantly lower than those for SM-C and SM-S (p < 0.001). SM-C and SM-S showed superior occlusal fit compared to AM-F and AM-S (p < 0.001).
conclusionsThe type of CAD-CAM manufacturing method-additive or subtractive-significantly influenced the trueness and internal fit of resin-based definitive crowns.
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