ArticleBMC oral health2026
Effect of saliva contamination and decontamination procedures on bond strength to framework materials.
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.
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5 authors.
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Abstract
backgroundThe proper and reliable functioning of the bonding mechanism in the presence of saliva is a challenging process. The aim of this study was to evaluate the effect of decontamination methods on surface roughness, contact angle, and shear bond strength of various framework materials bonded to composite resin cement.
methodsA total of 180 specimens were prepared, with 60 specimens each from zirconia and two different production methods of CoCr alloys. The specimens were randomly separated to 6 subgroups for each material; no saliva contamination served as a control group. Group CO: saliva contamination, group AW: saliva contamination + air dried and water rinsed, group S: saliva contamination + air abrasion, group K and group Z were treated with different cleaning solutions after saliva contamination. Prior to resin cement application, zirconia primer was applied to the zirconia specimens, while alloy primer was used for the CoCr alloys specimens. Shear bond strength test was measured with universal test machine (3340, Instron Corp., Wycombe, UK). Fracture analysis was evaluated with stereomicroscope. Water contact angle was measured using a goniometer, and surface roughness was assessed with a profilometer. Statistical analysis was conducted using ANCOVA and multiple comparison tests at a 0.05 significance level.
resultsAll decontamination methods enhanced SBS values compared to the saliva-contaminated groups. However, only sandblasting (Group S) revealed significantly higher SBS values than the other decontamination methods for all frameworks (p < 0.05). Decontamination methods altered the surface roughness and contact angle values of all framework materials.
conclusionsDecontamination process after saliva contamination enhanced the bond strength and wettability. Cleaning solution may be the alternative decontamination technique to sandblasting for framework materials.
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