Evidence map›Paper›PMID 42337692›Full record

ArticleHead & face medicine2026

Effect of build orientation on fracture load and surface roughness of three-unit provisional fixed partial dentures fabricated by digital light processing.

Mahnaz Arshad, Mahya Hasanzade, Dimah Haydar Al-Bahrani, Seyed Ali Mosaddad

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Article in Head & face medicine, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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4 · The record

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5 · Who and what money

Authors and funding

4 authors.

Mahnaz ArshadProsthodontic Department, Dental Research Center, Dentistry Research Institute, Tehran University of Medical Sciences, Tehran, Iran.
Mahya HasanzadeDepartment of Prosthodontics, Tehran University of Medical Sciences, Tehran, Iran. mahya_hasanzade@yahoo.com.
Dimah Haydar Al-BahraniStudent Research Committee, Tehran University of Medical Sciences, International Campus, Tehran, Iran.
Seyed Ali MosaddadDepartment of Research Analytics, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, India. semosadd@ucm.es.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveTo evaluate the effect of build orientation on the fracture load and surface roughness of three-unit provisional fixed partial dentures (FPDs) fabricated by digital light processing (DLP).

methodsIn this in vitro study, standardized three-unit FPDs were designed and fabricated using a DLP 3D printer at three buccolingual angulations (150°, 180°, and 210°) and three mesiodistal angulations (0°, 15°, and 45°) (n = 12 per group). Surface roughness (Ra, µm) was measured using a profilometer, and fracture load (N) was determined using a universal testing machine. Surface roughness data were analyzed using three-way repeated-measures ANOVA, while fracture load data were analyzed using two-way ANOVA, followed by Tukey post hoc tests (α = 0.05).

resultsBuccolingual and mesiodistal angulations significantly affected surface roughness (p < 0.001) and fracture load (p < 0.001). The lowest surface roughness was observed at 210° buccolingual and 45° mesiodistal angulation, whereas the highest fracture load was recorded at 210° buccolingual and 0° mesiodistal angulation. The effect of location on surface roughness was not significant (p = 0.309).

conclusionsBuild orientation significantly influences the surface and mechanical performance of 3D-printed provisional FPDs. The 210-degree buccolingual angulation showed favorable outcomes under specific mesiodistal conditions; however, the optimal mesiodistal angulation depended on the desired outcome, with 45 degrees improving surface smoothness and 0 degrees enhancing fracture resistance.

Indexed as

Computer-Aided DesignDental Restoration FailureDenture DesignDenture, Partial, FixedPrinting, Three-DimensionalDental Stress AnalysisHumansIn Vitro TechniquesSurface PropertiesDental prosthesis, temporaryPrinting, three-dimensionalProsthesis designStress, mechanicalSurface properties

Identifiers

PMID42337692
PMCPMC13555927

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