Operative dentistry最新文献

{"title":"The Use of Intraoral Camera, Quantitative Light Fluorescence, and Visual Examinations for the Detection and Assessment of Enamel Fluorosis.","authors":"N Abogazalah, L Al Dehailan, A-E Soto-Rojas, M Ando, S Martignon, H Eggertsson, D Shone, E-A Martinez-Mier","doi":"10.2341/24-137-C","DOIUrl":"10.2341/24-137-C","url":null,"abstract":"<p><strong>Purpose: </strong>To evaluate the in vivo and in vitro performance of an intraoral camera (IC), visual examination using the Thylstrup and Fejerskov Index (TFI), and quantitative light-induced fluorescence (QLF) to detect and quantify enamel fluorosis (EF).</p><p><strong>Methods and materials: </strong>Calibrated examiners performed IC-qualitative (ICQual), TFI, IC-quantitative (ICQuant), and QLF (Area, Fluorescence loss [ΔF], and ΔQ: Area×ΔF) on 150 extracted teeth in vitro and 150 children in vivo. Polarized light microscopy (PLM) was the gold standard for the in vitro phase. Cross tabulation, agreement, correlation, comparison of means from quantitative measures, sensitivity, and specificity were calculated for TFI, QLF, ICQual, and ICQuant. For the in vivo phase, TFI scores were cross tabulated with ICQuant and ICQual, and Kendall's Tau was used to measure correlation.</p><p><strong>Results: </strong>Agreements of TFI and ICQual with PLM were 53.77% and 47.17%, respectively. Correlation coefficients for QLF (area, ΔF, ΔQ) and ICQuant with PLM scores were 0.47, 0.56, 0.51, 0.46, respectively. Sensitivity/specificity for TFI, ICQual, ICQuant, and ΔQ were 0.86/0.58, 0.86/0.62, 0.86/0.58, and 1.00/0.13, respectively. For the in vivo phase, correlations of ICQual and ICQuant with TFI were 0.55 and 0.52, respectively. Quantitative measurements of ICQuant by TFI scores showed consistent separation in means, while those for QLF were neither as clear nor as consistent.</p><p><strong>Conclusion: </strong>All methods were able to detect and quantify enamel fluorosis. However, there were consistent and significant differences among them.</p>","PeriodicalId":19502,"journal":{"name":"Operative dentistry","volume":" ","pages":"311-323"},"PeriodicalIF":1.4,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144248962","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Lest We Lose Sight: A Reprint with Foreword.","authors":"Kim Diefenderfer","doi":"10.2341/1559-2863-50-3-231","DOIUrl":"https://doi.org/10.2341/1559-2863-50-3-231","url":null,"abstract":"","PeriodicalId":19502,"journal":{"name":"Operative dentistry","volume":"50 3","pages":"231-232"},"PeriodicalIF":1.4,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144529048","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Posterior Cantilevered Single-Retainer All-Ceramic Resin-Bonded Fixed Dental Prostheses: A 12-Year Clinical Case and Proposed Clinical Recommendations.","authors":"J-P Attal, G Tirlet, M LeCorre, P Boitelle, E Dursun, A Benoit, L Valtaud, E Caussin, P François","doi":"10.2341/24-116-S","DOIUrl":"10.2341/24-116-S","url":null,"abstract":"<p><strong>Objective: </strong>To present a clinical case featuring a posterior cantilevered single-retainer all-ceramic resin-bonded fixed dental prosthesis (PC-RBFDP) with 12 years of follow-up. This FDP was used to restore a missing premolar using a single-retainer canine abutment. The aim was also to draw clinical recommendations based on current data and experience.</p><p><strong>Methods: </strong>To address the present case, the missing premolar was replaced with a stratified 3Y-TZP zirconia PC-RBFDP fabricated from a conventional impression using CAD-CAM technology. The prosthesis was bonded using a resin luting cement containing 10-methacryloyloxydecyl dihydrogen phosphate (10-MDP), and the patient was reevaluated semi-annually. Insights obtained from this case, along with advancements in scientific understanding based on current data, are further explored.</p><p><strong>Results: </strong>This clinical case, which occurred 12 years ago, was successful. Building on the insights gained from this case and subsequent ones, modifications to the preparation geometry have been implemented, informed by the in vitro biomechanical findings presented herein. Furthermore, a step-by-step clinical procedure is suggested, drawing from experience with other cases and the current literature on PC-RBFDPs.</p><p><strong>Conclusions: </strong>With a necessity of caution due to the limited evidence supporting this therapy, this clinical case shows promising results in the use of ceramic RBFDPs in the posterior region, providing an alternative to implants in contraindicated patients. The comprehensive approach shown in the step-by-step clinical case and the manuscript, including indication assessment, selection of bonding materials, ceramic choice, and preparation geometry, utilizes, to the best of our ability, the most current information and technology available. Continued research is needed to further validate this treatment modality.</p>","PeriodicalId":19502,"journal":{"name":"Operative dentistry","volume":" ","pages":"235-244"},"PeriodicalIF":1.4,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144209018","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Variations in Microstructural, Thermal, and Mechanical Properties of Different CAD/CAM Lithium Disilicate Reinforced Glass Ceramics.","authors":"L N Tavares, D C Ferraz, K K Dolenkei, K Zancopé, A C Almeida Silva, L H Raposo","doi":"10.2341/24-133-L","DOIUrl":"10.2341/24-133-L","url":null,"abstract":"<p><strong>Purpose: </strong>This study compared four CAD/CAM lithium disilicate-reinforced glass ceramic systems (IPS e.max CAD, Rosetta SM CAD, T-lithium CAD, and IRIS CAD) regarding their crystalline and microstructural characteristics, thermal properties, mechanical strength, and bonding to a resin cement.</p><p><strong>Methods and materials: </strong>The crystalline and morphological characteristics of the ceramic microstructure were investigated by X-ray diffraction (XRD) and scanning electron microscopy (SEM), thermal behavior was assessed via differential thermal analysis (DTA). Mechanical properties were evaluated using a biaxial flexural strength test, and bonding to a resin cement was measured with a microshear strength test at distinct storage times. Data were evaluated using analysis of variance and Tukey HSD tests (α = 0.05).</p><p><strong>Results: </strong>High peak positions corresponding to standard lithium metasilicate and lithium disilicate with similar intensities were observed for all ceramics in the XRD analysis. SEM morphological analysis showed differences in crystal characteristics among the ceramics after HF etching. The DTA thermograms showed a crystallization process ranging from 812-872°C among the different ceramic systems. The IRIS system showed the lowest flexural strength values, while bond strengths to resin cement remained comparable among materials, regardless of storage time.</p><p><strong>Conclusions: </strong>Most lithium disilicate ceramic systems demonstrated acceptable characteristics in the tests performed, except for IRIS, which showed shortcomings in crystal morphology and mechanical strength, along with inconsistent thermal behavior. These findings underscore the importance of careful material selection to ensure durable dental restorations.</p>","PeriodicalId":19502,"journal":{"name":"Operative dentistry","volume":" ","pages":"333-344"},"PeriodicalIF":1.4,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144209020","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Celebrating Excellence.","authors":"Kim Diefenderfer","doi":"10.2341/1559-2863-50-2-117","DOIUrl":"https://doi.org/10.2341/1559-2863-50-2-117","url":null,"abstract":"","PeriodicalId":19502,"journal":{"name":"Operative dentistry","volume":"50 2","pages":"117-118"},"PeriodicalIF":1.4,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143803858","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Cover II.","authors":"","doi":"10.2341/1559-2863-50.2.ii","DOIUrl":"https://doi.org/10.2341/1559-2863-50.2.ii","url":null,"abstract":"","PeriodicalId":19502,"journal":{"name":"Operative dentistry","volume":"50 2","pages":"i-v"},"PeriodicalIF":1.4,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143803861","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Fifty Years of Teaching Operative Dentistry - My Reflections.","authors":"Gerald Denehy","doi":"10.2341/1559-2863-50-2-119","DOIUrl":"https://doi.org/10.2341/1559-2863-50-2-119","url":null,"abstract":"","PeriodicalId":19502,"journal":{"name":"Operative dentistry","volume":"50 2","pages":"119-121"},"PeriodicalIF":1.4,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143803864","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of Cement Type on Marginal Microleakage of Zirconia Crowns with or without Cervical Margin Relocation: An In Vitro Study.","authors":"R I Farah","doi":"10.2341/24-096-L","DOIUrl":"10.2341/24-096-L","url":null,"abstract":"<p><p>This study evaluated the microleakage in zirconia crowns cemented with bioactive vs resin cements at two margin locations: cementum/dentin deep margin and composite-elevated margins. Standardized mesial box cavities were prepared in 30 molar teeth, with proximal cavosurface margins placed 1 mm below the cemento-enamel junction (CEJ) and restored with resin composite. The teeth were prepared for zirconia crowns, with mesial margins on the composite and distal margins on tooth structure 1 mm below the CEJ. Following digitization and zirconia crown fabrication, the specimens were randomly allocated into five groups based on the type of cement used: one multistep adhesive resin, one self-adhesive resin, one bioactive hybrid ionic resin, and two bioceramic cements. Microleakage was evaluated by measuring the percentage of dye penetration depth at the interfaces, with data analyzed using two-way ANOVA. The results revealed a significant interaction between cement type and margin location, with elevated margins exhibiting less leakage than deep ones across all cement types (p≤0.001). However, the effect of margin location on microleakage varied depending on the cement type, with variations in microleakage scores at each margin location ranging from statistically nonsignificant (p>0.05) to statistically significant (p≤0.05). Adhesive resin and hybrid bioactive cements significantly outperformed others in reducing microleakage at both margin interfaces.</p>","PeriodicalId":19502,"journal":{"name":"Operative dentistry","volume":" ","pages":"194-203"},"PeriodicalIF":1.4,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143190093","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Radiopacity and Filler Content of Dual-Cure Resin Core Material, Dual-Cure Resin Cement, and Bulk-Fill Resin Composites Used for Restoring Endodontically Treated Teeth.","authors":"Lcl Mendoza, T S Peres, Idg Estevão, H L Carlo, C J Soares","doi":"10.2341/24-068-L","DOIUrl":"10.2341/24-068-L","url":null,"abstract":"<p><strong>Objective.: </strong>This study evaluated the effect of filler content and composition on the radiopacity of different resin-based materials used to cement fiberglass posts (dual-cure resin cements or dual-cure resin core materials) and build the core (bulk-fill or dual-cure core resin composites) to restore endodontically treated teeth.</p><p><strong>Methods and materials.: </strong>Nine resin-based materials were tested: Four dual-cure resin core materials: Allcem Core, FGM; LuxaCore Z, DMG; Rebilda DC, VOCO; and Clearfil DC Core Plus, KURARAY; three dual-cure resin cements: RelyX Universal, 3M Oral Care; RelyX U200, 3M Oral Care; and Allcem Dual, FGM; and two bulk-fill resin composites: OPUS Bulk Fill APS, FGM; and Filtek One Bulk Fill, 3M Oral Care. Thermogravimetric analysis (TGA, %) was performed to determine the filler content. Scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDS) were used to evaluate the filler morphology and composition. Radiopacity was measured using digital radiographs (n=10) according to ISO 4049 standards. TGA and radiopacity data were subjected to a one-way analysis of variance (ANOVA) followed by a Tukey post hoc test (α=0.05).</p><p><strong>Results.: </strong>Except for Luxacore Z, the dual-cure resin core materials and bulk-fill resin composites had higher filler contents than the dual-cure resin cements (p<0.001). Allcem Core exhibited more homogeneous fillers without agglomerates, whereas RelyX Universal presented only nanoparticles. OPUS Bulk Fill APS, Allcem Dual, and Allcem Core, made by the same manufacturer, presented similar sizes, shapes, and distributions of filler content. EDS analysis revealed that oxygen O (8), Si (14), C (6), Al (13), and Ba (56) were the most prevalent elements. The radiopacity of the tested materials is related to the presence of high atomic number elements such as Yr (70), La, (57), Ba (56), Zr (40), Sr (38), and Br (35) in their filler composition. All materials satisfied the ISO 4049 radiopacity requirements.</p><p><strong>Conclusions.: </strong>Results were product-specific. Except for LuxaCore Z and Allcem Core, dual-cure resin core materials exhibited filler content similar to that of bulk-fill resin composites and higher than that of dual-cure resin cements. All materials exceeded the ISO 4049-2019 standard for radiopacity of restorative materials.</p>","PeriodicalId":19502,"journal":{"name":"Operative dentistry","volume":"50 2","pages":"175-184"},"PeriodicalIF":1.4,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143803338","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Combined Orthodontic, Orthognathic Surgical, and Prosthodontic Treatment for Severe Class III Malocclusion Using Digital Workflows.","authors":"L Szegedi, N K Rózsa, B Nemes, G Lőrincz, P Kreuter, D Végh, I Róth, S Bogdán, P Hermann, Z Géczi","doi":"10.2341/23-099-S","DOIUrl":"10.2341/23-099-S","url":null,"abstract":"<p><p>The patient underwent combined orthodonticorthognathic surgical treatment due to her skeletal Class III malocclusion. In the first phase, orthodontic decompensation was performed with maxillary and mandibular fixed appliances. The maxillary first premolars were extracted; the created space was closed by anterior retraction. The posterior anchorage was reinforced with interradicular temporary anchorage devices. In the second phase, a digital surgical treatment plan was made with intra- and extraoral simulation (including occlusion and profile). During the orthognathic surgery, a bilateral sagittal split osteotomy with mandibular setback was combined with maxillary movements, using 3D-printed surgical splints. In the third phase, the orthodontic treatment continued to finish and settle the occlusion. Spaces were created between the upper incisors for ceramic veneers to gain proper overjet and occlusion. The last phase was prosthetic and esthetic rehabilitation. During the planning, a 2Dand 3D-smile design was created and presented to the patient as a mock-up. After digital impression and design, four E-max veneers were milled and cemented using dual cement to finish the workflow. Retention splints were created to preserve the new status as a final step.</p>","PeriodicalId":19502,"journal":{"name":"Operative dentistry","volume":"50 2","pages":"123-131"},"PeriodicalIF":1.4,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143803860","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}