The journal of adhesive dentistry最新文献

{"title":"Do Amelogenin Peptide-Based Nanohydrogels Prevent Artificially Induced White Spot Lesions?","authors":"Maryam Shakir, Harraa S Mohammed-Salih, Falah H Hussein, Jameel R Al-Obaidi","doi":"10.3290/j.jad.c_2843","DOIUrl":"https://doi.org/10.3290/j.jad.c_2843","url":null,"abstract":"<p><strong>Purpose: </strong>As one of the most undesirable side effects of fixed orthodontic treatment, the occurrence of white spot lesions should be prevented. In the present study, amelogenin peptide combined with hydroxyapatite nanoparticles within chitosan hydrogels was formulated to prevent enamel demineralization.</p><p><strong>Methods and materials: </strong>Three groups were evaluated for the evaluation of preventive effects. The first group received no treatment and was considered a control group, while the other groups were the experimental groups with the intervention. The first experimental group was treated with chitosan-based hydrogel including the peptide, while the other group was treated with the application of equal amounts of chitosan-based hydrogels loaded with either peptide or hydroxyapatite. pH cycling was carried out for two weeks. The preventive potential was evaluated through the estimation of enamel microhardness, fluorescence, and X-ray diffraction. The surface characteristics of sound and treated enamel were evaluated by scanning electron microscopy using different magnifications, and the chemical compositions were analyzed by an energy-dispersive X-ray spectroscopic analyzer.</p><p><strong>Results: </strong>The results revealed the preventive potential of amelogenin peptide combined with hydroxyapatite through the preservation and improvement of appearance, and mechanical and chemical characteristics of the enamel surface throughout pH cycling.</p><p><strong>Conclusion: </strong>This study concludes that the amelogenin peptide combined with hydroxyapatite nanoparticles within chitosan hydrogels provides a promising preventive strategy.</p>","PeriodicalId":94234,"journal":{"name":"The journal of adhesive dentistry","volume":"28 ","pages":"187-197"},"PeriodicalIF":2.7,"publicationDate":"2026-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149241010","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"EFCD Expert Non-Consensus on Material and Technique Use for Direct Class II Composites With Guidance on Restoring Complex Cavities.","authors":"Oliver Bailey, Frank Pfefferkorn, Thomas Attin, Roland Frankenberger, Bas Loomans, Anne-Katrin Lührs, Nicola Scotti, Diana Wolff, Reinhard Hickel, Niek Opdam","doi":"10.3290/j.jad.c_2836","DOIUrl":"10.3290/j.jad.c_2836","url":null,"abstract":"<p><strong>Purpose: </strong>There is confusion over the indications, techniques, and material choices for placing direct class II composite restorations among general dentists. This paper synthesizes new data on the general frequency of use of materials and techniques by experts, with a previous related paper that explored if and how experts restored specific class II cavities with varying complexities. It aimed to see if consensus on technique and material use when restoring class II cavities with composite could be pursued. These findings are used to inform an overview of various techniques and provide guidance on the management of more complex class II cavities.</p><p><strong>Methods: </strong>An international expert group (n = 9) developed an e-questionnaire. The first part of the questionnaire, reported here, covered the general frequency of material and technique use during cavity preparation, control of the operating field, soft tissue management, matrix selection, stabilization and peripheral seal, tooth separation, composite materials, application techniques, light curing, finishing, and polishing. It was distributed to 67 international clinicians with expertise in placing direct composite restorations (September 2024).</p><p><strong>Results: </strong>Response rate was 82%, with 95% of responders completing the first part of the survey. There was a wide variation in frequency of use of a broad variety of materials and techniques.</p><p><strong>Conclusions: </strong>International experts used a wide variety of materials and techniques for restoration of class II cavities with direct composite. Consensus was therefore not pursued. There are many potential techniques which can offer pragmatic solutions to directly restore complex class II cavities that are not beyond general practitioners.</p>","PeriodicalId":94234,"journal":{"name":"The journal of adhesive dentistry","volume":"28 ","pages":"171-185"},"PeriodicalIF":2.7,"publicationDate":"2026-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13650425/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149121394","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Debonding of Clear Aligner Attachments With Fluorescence-Aided Identification Technique (FIT): An In Vitro Study.","authors":"Inga Vanessa Bordihn, Cita Nottmeier, Henriette Ida Ulrike Stasche, Gina Marie Georgi, Ellen Schulz-Kornas, Tobias Meißner, Rainer Haak, Julian Petersen, Till Koehne","doi":"10.3290/j.jad.c_2806","DOIUrl":"10.3290/j.jad.c_2806","url":null,"abstract":"<p><strong>Purpose: </strong>The aim of this in vitro study was to investigate whether removing fluorescent clear aligner attachments under UV light improves the efficiency of attachment removal and reduces enamel loss and composite residue.</p><p><strong>Methods and materials: </strong>Clear aligner attachments were bonded to bovine teeth using fluorescent-modified composite (AlignerFlow LC, VOCO, Germany); 20 models were prepared. In a split-mouth design, attachments were removed either using a fluorescence-aided identification technique (FIT) under UV light, or with standard white light (non-FIT). Removal time was recorded for each attachment. Intraoral surface and optical coherence tomography (OCT) scans (T0, T1) were analyzed to quantify enamel loss and composite residue using Avizo Software, while OCT scans were assessed using a dichotomous scale for enamel loss and a four-point scale for composite residue.</p><p><strong>Results: </strong>Although there is a trend toward faster attachment removal with FIT, measurements of removal time did not differ significantly between the groups due to high inter-individual variability. Volumetric analysis revealed a significant reduction in composite residue with FIT, while no significant differences in enamel loss were detected between the groups. OCT measurements revealed no significant differences between groups, as composite residue and enamel loss occurred on a microscopic scale in most of the specimens, regardless of the debonding method.</p><p><strong>Conclusion: </strong>While neither debonding time nor enamel loss were affected, FIT significantly reduced residual composite after attachment removal, suggesting that FIT may contribute to more standardized clinical outcomes. Future in vivo studies with larger sample sizes, multiple operators, and different adhesive systems are needed to validate these findings.</p>","PeriodicalId":94234,"journal":{"name":"The journal of adhesive dentistry","volume":"28 ","pages":"163-170"},"PeriodicalIF":2.7,"publicationDate":"2026-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13598411/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149019328","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Influence of Tea-Induced Discoloration and Whitening Protocols on the Optical and Surface Properties of Resin Composites: An In Vitro Study.","authors":"Oyun-Erdene Batergel, Dalndushe Abdulai, Rafat Sasany","doi":"10.3290/j.jad.c_2824","DOIUrl":"10.3290/j.jad.c_2824","url":null,"abstract":"<p><strong>Purpose: </strong>Resin composites are susceptible to extrinsic discoloration and surface alterations from beverages such as tea, as well as subsequent whitening treatments. This study aimed to evaluate the color stability (ΔE00) and surface roughness (Ra) of four resin composites after exposure to tea and whitening using either a mouthwash or a toothpaste.</p><p><strong>Methods and materials: </strong>Eighty standardized A1-shade discs were fabricated from Filtek Z350 XT (FZ), Herculite Classic (HC), G-ænial Anterior (G), and Asteria (A) (n = 20/group). Specimens were polished, stored in distilled water for 24 h, and baseline measurements were recorded (T0). All samples were immersed in freshly prepared tea for 6 days (T1) and then randomized into two whitening groups: immersion in Listerine Total Care mouthwash (MW) or brushing with a Colgate Optic White slurry (TP) for 6 days (T2a-T2b). Color was measured using a spectrophotometer, and Ra was measured using a profilometer. Data were analyzed using two-way repeated-measures ANOVA, Tukey post hoc tests, and partial eta-squared effect sizes (α = 0.05).</p><p><strong>Results: </strong>All composites exhibited clinically unacceptable discoloration according to the contemporary CIEDE2000 acceptability thresholds (ΔE00 > 1.8), with HC and A reaching the extremely unacceptable category. Whitening resulted in partial color recovery, with MW outperforming TP (p 0.01). Surface roughness increased following whitening, especially in TP (ΔRa = 0.093 ± 0.024 µm). Large effect sizes were observed for both material and time factors.</p><p><strong>Conclusions: </strong>Tea staining significantly affected the color stability and surface roughness of all composite materials. FZ demonstrated the highest color stability, whereas HC showed the greatest discoloration and surface roughness. Whitening procedures partially reversed discoloration but did not restore baseline values. Overall, composites with finer filler structures exhibited better optical and surface properties compared with conventional hybrid composites.</p>","PeriodicalId":94234,"journal":{"name":"The journal of adhesive dentistry","volume":"28 ","pages":"153-162"},"PeriodicalIF":2.7,"publicationDate":"2026-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148946539","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Influence of Radiotherapy Timing on Sealer-Dentin Adhesion: A Confocal Microscopy and Push-Out Bond Strength Study.","authors":"Gamze Nalci Calik, Burcu Oglakci Ozkoc, Ceren Deger, Humeyra Capkin, Kerime Akdur, Alpaslan Mayadagli","doi":"10.3290/j.jad.c_2792","DOIUrl":"10.3290/j.jad.c_2792","url":null,"abstract":"<p><strong>Purpose: </strong>The purpose of this study was to evaluate the influence of radiotherapy timing on the dentinal tubule penetration and push-out bond strength of an epoxy resin-based sealer (AH Plus) and a bioceramic sealer (BioRoot RCS).</p><p><strong>Methods and materials: </strong>In total, 180 single-rooted sound human mandibular premolars were used and allocated to three main groups with different radiotherapy timings: Control (no irradiation), Before RT (irradiation prior to root canal obturation), and After RT (irradiation after root canal obturation). Subsequently, each group was subdivided into different sealer types: AH Plus and BioRoot RCS. For the Before RT and After RT groups, a cumulative dose of 60 Gy (6 weeks, 2 Gy per day, 5 days per week) was delivered. The dentinal tubule penetration depth was assessed using confocal laser scanning microscopy (n = 15), and the push-out bond strength was measured using a universal testing machine (n = 15). The data were analyzed using three-way ANOVA and Bonferroni tests (p 0.05).</p><p><strong>Results: </strong>In the coronal thirds, the After RT group showed significantly lower tubule penetration and bond strength compared with the Control group for both sealers. In the apical thirds, BioRoot RCS was predominantly affected. The After RT group also showed significantly lower bond strength and tubule penetration than the Before RT group. These results were confirmed by the higher frequency of adhesive failures in the After RT group compared to the others. Finally, in the coronal thirds, AH Plus exhibited significantly higher bond strength than BioRoot RCS despite having lower dentinal tubule penetration.</p><p><strong>Conclusion: </strong>Radiotherapy timing significantly influenced sealer-dentin adhesion, varying by root canal levels and material types. Radiotherapy applied after obturation adversely affected the sealer-dentin interaction, resulting in reduced tubule penetration and bond strength, especially for BioRoot RCS.</p>","PeriodicalId":94234,"journal":{"name":"The journal of adhesive dentistry","volume":"28 ","pages":"143-151"},"PeriodicalIF":2.7,"publicationDate":"2026-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13531763/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148868644","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Effect of Different Types of Adhesive Systems on Marginal Integrity of Class II Resin Composite Restoration.","authors":"Phattarasinee Phuntusuntorn, Kulapatch Engkatanachai, Weerachai Singhatanadgit, Yanee Tantilertanant","doi":"10.3290/j.jad.c_2789","DOIUrl":"10.3290/j.jad.c_2789","url":null,"abstract":"<p><strong>Purpose: </strong>To evaluate the marginal integrity of cervical margin relocation (CMR) or deep margin elevation (DME) restorations using a universal adhesive in etch-and-rinse and self-etch modes, compared to gold-standard systems after 6-month water aging.</p><p><strong>Methods and materials: </strong>Standardized mesial and distal Class II cavities were prepared in 32 human maxillary premolars. Specimens were assigned to four groups according to adhesive systems and modes: OFL (OptiBond FL), CSE (Clearfil SE Bond), UER (Single Bond Universal; etch-and-rinse), and USE (Single Bond Universal; self-etch) (n = 16 per group). After DME/CMR and final restoration, specimens were stored in 37°C distilled water for 6 months. Marginal integrity was assessed qualitatively via micro-CT by two calibrated observers and quantitatively via 0.5% methylene blue dye. Data were analyzed using weighted kappa coefficient, Wilcoxon signed-rank test, two-way repeated measures analysis of variance (ANOVA), and one-way ANOVA with Games-Howell post-hoc tests (α = 0.05).</p><p><strong>Results: </strong>Micro-CT showed high inter-examiner reliability (κ = 0.84) and stable interfacial adaptation across groups post-aging. However, dye penetration revealed that adhesive mode significantly affected microleakage (p 0.05), while proximal box concavity geometry had no significant effect (p > 0.05). The USE group exhibited the lowest mean microleakage (0.94 ± 0.62 mm), showing no significant differences from OFL and CSE. The UER group showed the highest mean microleakage (1.48 ± 0.09 mm), which was significantly higher than the USE group (p 0.05).</p><p><strong>Conclusion: </strong>Within the limitations of this study, the self-etch application of universal adhesives provided superior durability of marginal seals for DME compared to the etch-and-rinse mode. Optimizing matrix application also minimized the influence of concavity geometry.</p>","PeriodicalId":94234,"journal":{"name":"The journal of adhesive dentistry","volume":"28 ","pages":"133-142"},"PeriodicalIF":2.7,"publicationDate":"2026-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13500939/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148803938","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of Etching Protocols on the Bonding Performance of a HEMA-Free Two-Step Universal Adhesive to Caries-Affected Dentin.","authors":"Melike Bilce, Fatih Bedir, Günes Bulut Eyüboglu, Tugba Serin Kalay, Muhammet Karadas","doi":"10.3290/j.jad.c_2785","DOIUrl":"10.3290/j.jad.c_2785","url":null,"abstract":"<p><strong>Purpose: </strong>To assess the bonding performance of a two-step universal adhesive applied in etch-and-rinse and self-etch protocols to caries-affected dentin.</p><p><strong>Methods and materials: </strong>Mid-coronal dentin surfaces were obtained from extracted human molars and assigned to either sound or caries-affected dentin groups. Specimens were randomly distributed into 12 subgroups (n = 10) based on adhesive type (G2-Bond Universal, Gluma Bond Universal, Clearfil S3 Bond Universal), bonding protocol (self-etch or etch-and-rinse), and evaluation period (24 h or aging). Resin composite blocks were fabricated and subjected to shear bond strength testing after 24 h or 10,000 thermocycles. Fourier-transform infrared spectroscopy was employed to measure the degree of conversion of each adhesive. Statistical analyses included ANOVA, Weibull analysis, and Kruskal-Wallis tests (α = 0.05).</p><p><strong>Results: </strong>Adhesive type and bonding protocol significantly influenced bond strength (p 0.001), whereas substrate condition and thermocycling had no significant impact (p > 0.05). After aging, Clearfil S3 Bond Universal in the self-etch protocol presented considerably lower bond strength to caries-affected dentin compared with G2-Bond Universal and Gluma Bond Universal, with no significant difference between the latter two. After aging, Gluma Bond Universal and G2-Bond Universal revealed significantly greater bond strength to caries-affected dentin when applied in the self-etch protocol than in the etch-and-rinse protocol. No significant differences were detected among adhesives when the etch-and-rinse protocol was used, regardless of testing time and substrate.</p><p><strong>Conclusions: </strong>Phosphoric acid pre-etching negatively affected the bonding performance of Gluma Bond Universal and G2-Bond Universal to caries-affected dentin.</p>","PeriodicalId":94234,"journal":{"name":"The journal of adhesive dentistry","volume":"28 ","pages":"123-132"},"PeriodicalIF":2.7,"publicationDate":"2026-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13483063/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148803907","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Influence of Tooth Whitening After Resin Infiltration on the Shear Bond Strength of Orthodontic Brackets.","authors":"Christoph Matthias Schoppmeier, Li Sun, Malin Janson, Isabelle Graf, Bert Braumann, Max von Kohout, Anna Greta Barbe, Michael Jochen Wicht","doi":"10.3290/j.jad.c_2772","DOIUrl":"10.3290/j.jad.c_2772","url":null,"abstract":"<p><strong>Purpose: </strong>To determine the influence of different bleaching methods on the shear bond strength (SBS) of orthodontic brackets bonded to resin-infiltrated (Icon, DMG) extracted human enamel.</p><p><strong>Methods and materials: </strong>64 extracted wisdom teeth were randomized into four groups (n = 16): 1. (-)control (no treatment), 2. (+)control (RI), 3. RI followed by 25% H2O2 (IOB) and 4. RI followed by 10% carbamide peroxide bleaching (HB). After a standardized demineralization protocol, RI and bleaching were performed according to the manufacturer's instructions prior to storage for 14 days. Brackets (Mini Diamond Twin, Ormco) were bonded buccally and lingually (Transbond XT, 3M). SBS values (MPa, traverse speed 0.5 mm/min, Zwick Roell) and the Adhesive Remnant Index (ARI) were determined on the buccal side. Following 5000 thermal cycles (5-55°C; RC 20 CS Lauda), SBS and ARI values for the lingual brackets were determined analogously. Data were analyzed with mixed ANOVA and Kruskal-Wallis and Wilcoxon tests at a 0.05 significance level.</p><p><strong>Results: </strong>Differences in SBS were observed among groups (F(3, 64) = 8.01, P 0.001). HB exhibited the lowest SBS values (14.99 ± 6.42 MPa; 10.84 ± 3.61 MPa), differing significantly from the negative control (P = 0.041; P = 0.002 after thermocycling). No significant differences were noted between IOB and HB. Thermocycling reduced SBS values across all groups (F(3, 64) = 25.83, P 0.001).</p><p><strong>Conclusion: </strong>RI followed by bleaching negatively impacts bracket bonding strength, with a significant reduction observed after home bleaching, while in-office bleaching showed no such effect.</p>","PeriodicalId":94234,"journal":{"name":"The journal of adhesive dentistry","volume":"28 ","pages":"111-122"},"PeriodicalIF":2.7,"publicationDate":"2026-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13444693/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148674426","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Operator Experience Does Not Affect the Reliability of Universal Adhesives' Bond Strength; Adhesive Type Does.","authors":"Marwa Bawazir, Sibel A Antonson","doi":"10.3290/j.jad.c_2675","DOIUrl":"10.3290/j.jad.c_2675","url":null,"abstract":"<p><strong>Purpose: </strong>To determine the influence of operators' experience, dentin moisture condition (DMC), and adhesive type on shear bond strength, and evaluate the consistency of adhesive performance under these conditions to demonstrate clinical reliability.</p><p><strong>Methods and materials: </strong>Six hundred sound dentin surfaces were randomly divided by five dentists with at least 10 years of experience (n = 300/5 dentists) and five first-year dental students without dental experience (n = 300/5 students). Each operator applied universal (UA) (Adhese Universal, Ivoclar) and etch-and-rinse (ERA) (OptiBond FL, Kerr) adhesives (n = 60/adhesive type) before and after receiving demonstration on the manufacturers' recommended application techniques by the principal investigator (PI), on wet, moist, and dry dentin surfaces (n = 5/DMC). DMCs were obtained by the PI before the operators applied the adhesives. The PI applied composite restorations (Tetric EvoCeram Bulk Fill, Ivoclar) and polymerized for 20 s. Shear bond strength (SBS) test was conducted after 24 h storage at 37°C, in 100% humidity. Boxplot, Log Worth, and Tukey HSD were used for statistics.</p><p><strong>Results: </strong>The median SBS of ERA obtained by dentists was 17.79 MPa with an interquartile range (IQR) of 19.61, while students showed a lower median of 13.52 MPa with IQR of 15.81. The UA showed consistency in SBS and reduced variability across operators with median SBS by dentists and students (25.53 MPa and 24.96 MPa, respectively), with narrower IQRs of 10.6 and 7.3, respectively. SBS of UA was significantly higher than ERA (P 0.001). UA obtained 7.38 MPa ± 0.89 greater SBS than ERA. While no difference in SBS by operator was observed for UA, dentists obtained 1.65 MPa ± 0.73 greater SBS than students with ERA. Dry and moist dentin surface conditions yielded higher SBS values compared to wet surfaces (P 0.001 and P 0.002, respectively), with no significant differences observed between moist and dry surfaces.</p><p><strong>Conclusion: </strong>The tested UA provided reliable outcomes regardless of operator and DMC.</p>","PeriodicalId":94234,"journal":{"name":"The journal of adhesive dentistry","volume":"28 ","pages":"99-110"},"PeriodicalIF":2.7,"publicationDate":"2026-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13292752/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148304533","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of Different Specimen Preparation Methods on Dentin Shear Bond Strength: Polyethylene Tubes vs Jig System.","authors":"Sena Balaban Karakaş, Mert Karakaş, Asude Mürüvet Oğuz, Hacer Deniz Arısu","doi":"10.3290/j.jad.c_2707","DOIUrl":"10.3290/j.jad.c_2707","url":null,"abstract":"<p><strong>Purpose: </strong>This study evaluated the influence of different specimen preparation methods on the shear bond strength (SBS) of a universal adhesive to dentin, with the aim of identifying a more standardized and reliable protocol for SBS testing.</p><p><strong>Methods and materials: </strong>Thirty-three extracted molars were used to obtain 66 dentin surfaces. After surface preparation with 600-grit silicon carbide paper, specimens were randomly assigned to three groups (n = 22) according to the specimen preparation technique: tube-removed (polyethylene tubes removed before testing), tube-retained (tubes left in place during testing), and jig-based (Ultradent jig system, South Jordan, UT, USA). SBS testing was performed using a universal testing machine at 1 mm/min. Failure modes were analyzed under a stereomicroscope and representative specimens were examined by scanning electron microscopy (SEM). Data were analyzed using one-way ANOVA and Tamhane's T2 post-hoc test (α = 0.05).</p><p><strong>Results: </strong>Significant differences were found among the groups (P 0.001). The highest mean SBS values were obtained in the jig-based group, followed by the tube-removed and tube-retained groups. Adhesive failure was predominant across all groups, with 100% adhesive failures observed in the jig-based group. SEM analysis revealed a more clearly delineated bonding interface in the jig-based group, while tube-based groups exhibited minor polyethylene residues.</p><p><strong>Conclusion: </strong>These findings indicate that the specimen preparation method plays a critical role in the reliability and interpretation of SBS testing outcomes. The jig-based approach may provide more consistent and reproducible SBS results compared to tube-based methods, highlighting the importance of standardized specimen fabrication in adhesive dentistry research.</p>","PeriodicalId":94234,"journal":{"name":"The journal of adhesive dentistry","volume":"28 ","pages":"75-81"},"PeriodicalIF":2.7,"publicationDate":"2026-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13235578/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148159426","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}