Journal of Esthetic and Restorative Dentistry最新文献

{"title":"The Influence of Abutment Selection in the Tridimensional Implant Position: Considerations for Predictable Implant Restorative Long-Term Outcomes.","authors":"A Lanis, S Akhondi, I Pedrinaci, L Tavelli, A Puisys","doi":"10.1111/jerd.13378","DOIUrl":"https://doi.org/10.1111/jerd.13378","url":null,"abstract":"<p><strong>Objective: </strong>To explore the influence of abutment selection on 3D implant positioning, emphasizing the synergy between surgical and prosthetic considerations for achieving predictable long-term outcomes in implant-supported restorations.</p><p><strong>Main considerations: </strong>Implant dentistry has transitioned from a purely surgical approach to a prosthetically driven methodology that prioritizes implant-supported restoration (ISR). This shift has been bolstered by advancements in digital technologies and abutment designs, which allow for more precise implant positioning and better management of biological, mechanical, and esthetic outcomes. The selection of appropriate abutments plays a pivotal role in optimizing the 3D implant position, influencing peri-implant tissue stability and the overall success of the restoration. This manuscript explores into the biorestorative concept, highlighting how virtual planning can preemptively assess abutment configurations and their interactions with surrounding tissues, guiding implant placement to achieve desired results.</p><p><strong>Clinical significance: </strong>The integration of digital planning and strategic abutment selection prior to implant placement ensures optimal 3D implant positioning respecting fundamental biological and prosthetic parameters. This approach minimizes complications, improves long-term tissue stability, and enhances patient outcomes by aligning surgical procedures with the specific prosthetic needs.</p>","PeriodicalId":15988,"journal":{"name":"Journal of Esthetic and Restorative Dentistry","volume":" ","pages":""},"PeriodicalIF":3.2,"publicationDate":"2024-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142769715","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Multilayer Ultratranslucent Monolithic Zirconia Crowns Treated With Multimode Universal Adhesive System Containing Zirconia Primer: A Clinical Report.","authors":"Larissa Mendonça de Miranda, Sarah Emille Gomes da Silva, João Vitor do Nascimento Santos, Rodrigo Othávio de Assunção E Souza","doi":"10.1111/jerd.13347","DOIUrl":"https://doi.org/10.1111/jerd.13347","url":null,"abstract":"<p><strong>Introduction: </strong>Ultratranslucent zirconia combines high mechanical strength and esthetics, making it ideal for monolithic restorations. This case report describes a total rehabilitation of the upper dental arch with single-unit crowns made of multilayer ultratranslucent zirconia (Prettau 4 Anterior, Zirkonzahn), as well as the use of a simplified adhesive cementation protocol for this type of ceramic.</p><p><strong>Materials and methods: </strong>A 64-year-old female patient sought rehabilitative treatment, after planning in a semi-adjustable articulator, interim prostheses, from tooth 2 to 15, were installed to restore occlusal vertical dimension and esthetics. After all surgical, periodontal, and endodontic procedures, impressions of the upper and lower arches were taken. In the maxilla, 14 zirconia crowns with a color gradient were fabricated and cemented, with their internal surface treated with a multimode adhesive system containing zirconia primer (Single Bond Universal, 3M ESPE). The same adhesive system was applied to the preparations, and the crowns were cemented with dual resin cement (RelyX Ultimate, 3M ESPE).</p><p><strong>Results: </strong>After the crowns exhibited excellent esthetic results, with only a minor fracture observed on the palatal cusps of the right first upper premolars.</p><p><strong>Conclusions: </strong>Thus, ultratranslucent zirconia appears to be a viable option for oral rehabilitation with single-unit crowns due to its excellent clinical performance.</p><p><strong>Clinical significance: </strong>Monolithic ultratranslucent zirconia crowns are able to reproduce the natural characteristics of dental elements. Additionally, the application of 10-methacryloyloxydecyl dihydrogen phosphate-based primer has proven to be an efficient surface treatment for adhesive cementation of UT zirconia.</p>","PeriodicalId":15988,"journal":{"name":"Journal of Esthetic and Restorative Dentistry","volume":" ","pages":""},"PeriodicalIF":3.2,"publicationDate":"2024-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142769714","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Vertical Versus Horizontal Finishing Lines for Dental Preparations: A Systematic Review With Meta-Analysis.","authors":"Monica Bonfanti-Gris, Guillermo Pradies, Belen Moron-Conejo, Alfonso Gil, Francisco Martinez-Rus","doi":"10.1111/jerd.13360","DOIUrl":"https://doi.org/10.1111/jerd.13360","url":null,"abstract":"<p><strong>Objectives: </strong>To evaluate the influence of horizontal and vertical dental preparation techniques on tooth-supported fixed restorations, with specific focus on survival and success rates, periodontal-related variables, and patient-reported outcome (PROs) measures.</p><p><strong>Methods: </strong>A comprehensive literature search of relevant randomized and controlled clinical trials (RCTs/CCTs), prospective/retrospective cohort studies, and case series with a minimum follow-up period of 3 years was performed across electronic databases (Medline, Embase, and Cochrane) up to January 2024. Primary outcomes included success and survival rates, and secondary outcomes included periodontal variables, both mechanical and biological complications, and PROs. Two reviewers independently conducted study selection, data extraction, and quality assessment. Of the 837 articles initially identified, 19 were included in the final analysis. A meta-analysis was conducted to compare the preparation techniques using survival and success rates as the main outcomes. Additionally, periodontal variables were analyzed.</p><p><strong>Results: </strong>The included studies varied in design, follow-up duration, restoration type, and materials used. Survival rates showed no significant differences between vertical and horizontal techniques (risk ratio (RR) 0.96-1.04, p = 0.95). Additionally, success rates (RR 0.93-1.14, p = 0.53) and periodontal variables also showed varied results with no clear preference for either technique.</p><p><strong>Conclusions: </strong>Both the horizontal and vertical preparation techniques exhibited comparable survival and success rates for dental restorations. Given that there was no significant difference in outcomes between the two, the choice of technique may depend on the clinician's preference and specific clinical scenarios.</p>","PeriodicalId":15988,"journal":{"name":"Journal of Esthetic and Restorative Dentistry","volume":" ","pages":""},"PeriodicalIF":3.2,"publicationDate":"2024-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142769716","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Introducing a novel approach to dental color reproduction using AI technology.","authors":"Marat Wartanovic Awdaljan, João Carlos Roque, James Choi, Luis Felipe Rondón","doi":"10.1111/jerd.13300","DOIUrl":"10.1111/jerd.13300","url":null,"abstract":"<p><strong>Objective: </strong>This article aims to describe a systematic method for tooth color reproduction with ceramics restorations employing artificial intelligence (AI) software named Matisse. It provides a comprehensive analysis of the entire process, beginning with shade-taking and extending to ceramic application in a complex clinical case in the anterior region-specifically, a single central restoration supported by an implant.</p><p><strong>Clinical considerations: </strong>The clinical case presented highlights the potential of Matisse software for generating ceramic (inSync-Jensen Dental, USA) and staining (Miyo-Jensen Dental, USA) recipes over a zirconia abutment (Katana-Noritake Dental, Japan). This approach achieves an optimal single central restoration utilizing CAD-CAM and layering techniques.</p><p><strong>Conclusions: </strong>The systematic method employing the Matisse software achieved accurate color reproduction for a single central restoration supported by an implant. This result was achieved by the dental ceramist within the first attempt and without seeing the patient in the entire process.</p><p><strong>Clinical significance: </strong>The Matisse AI-assisted protocol offers a systematic and scientifically grounded method for color reproduction in dentistry for indirect restorations.</p>","PeriodicalId":15988,"journal":{"name":"Journal of Esthetic and Restorative Dentistry","volume":" ","pages":"1623-1637"},"PeriodicalIF":3.2,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142000097","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Insights Into the Effects and Implications of Acidic Beverages on Resin Composite Materials in Dental Restorations: An In Vitro Study.","authors":"Kualsmita Das, Chethana S Murthy, Meena Naganath, Deepak Mehta, R Anitha Kumari, Mohmed Isaqali Karobari, Venkata Suresh Venkataiah","doi":"10.1111/jerd.13372","DOIUrl":"https://doi.org/10.1111/jerd.13372","url":null,"abstract":"<p><strong>Background: </strong>Dental composite resins are commonly used due to their excellent physical and mechanical properties. However, exposure to beverages like Coca-Cola, Apple juice, and Black coffee can negatively impact these materials. This study examined the effects of these drinks on the surface microhardness and surface roughness of Nanohybrid, Giomer, and Dual-Cure Bulk-fill resin composites.</p><p><strong>Methods: </strong>Seventy-two disc-shaped resin composite specimens were prepared and divided into four groups (n = 18) based on immersion liquid: Group 1 (Coca-Cola), Group 2 (Apple juice), Group 3 (Black coffee), and Group 4 (Distilled water). The composites were further categorized into NeoSpectra (Subgroup 1), Beautifil II (Subgroup 2), and Predicta (Subgroup 3). Specimens were immersed for 14 days, alternating 18 h in beverages and 6 h in distilled water daily. Microhardness was measured using a Vickers microhardness tester, and surface roughness was analyzed by atomic force microscopy. Data were assessed using one-way ANOVA and Tukey's post hoc test, with significance set at p < 0.05.</p><p><strong>Results: </strong>All groups experienced significant decrease in microhardness and surface roughness. Coca-Cola led to the highest roughness and hardness reduction. Among composites, the Nanohybrid resin (NeoSpectra) showed the least alteration.</p><p><strong>Conclusion: </strong>NeoSpectra ST, a nanohybrid composite, demonstrated superior resistance to acidic beverages compared to Giomer and Bulk-fill composites.</p><p><strong>Clinical significance: </strong>The study finds that out of three composite materials, nanohybrid composites are the most acid resistant which provides a suitable material for patients who consume acidic beverages more frequently. In this way, clinicians can use this information to help optimally increase the longevity of their restorations by selecting materials according to oral exposure levels of acids in their patients.</p>","PeriodicalId":15988,"journal":{"name":"Journal of Esthetic and Restorative Dentistry","volume":" ","pages":""},"PeriodicalIF":3.2,"publicationDate":"2024-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142769713","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of Abutment Tooth Geometry On The Accuracy of Fixed Prosthodontics Casts Obtained by Digital and Analog Workflows-In Vitro Study.","authors":"Hian Parize, Ana Paula Macedo, Bruno Frazão Gribel, Lauren Bohner, Mauricio Martins Provinciatti, Valdir Antonio Muglia","doi":"10.1111/jerd.13375","DOIUrl":"https://doi.org/10.1111/jerd.13375","url":null,"abstract":"&lt;p&gt;&lt;strong&gt;Objective: &lt;/strong&gt;Physical and digital casts are required for fixed dental prosthesis (FDP) fabrication. However, the effect of abutment tooth geometry on the accuracy of FDP casts obtained by digital and analog workflows remains unclear. This study evaluated the accuracy of obtaining dental casts for veneer and full crowns with digital and analog workflows.&lt;/p&gt;&lt;p&gt;&lt;strong&gt;Materials and methods: &lt;/strong&gt;A typodont model of the maxilla with unprepared teeth and veneer and full crown preparations was digitalized with intraoral scanning (TRIOS 3; 3Shape), digital model (DM) group, and the digital files were exported to two additive manufacturing technologies, resulting in the groups digital light processing (DLP) (Hunter; FlashForge) and polyjet (PLJ) (Eden 500 V; Stratasys). In addition, plaster casts (PCs) were obtained with polyvinyl siloxane (Express XT; 3M ESPE) double impressions and type IV plaster (FujiRock; GC America) as a control group. The sample size per group (n = 6) was defined in the pilot study. The digitization of the typodont and experimental casts was performed with a laboratory scanner (inEos X5; Dentsply Sirona). The measurement deviation (trueness and precision) to the reference model was performed with reverse engineering software (Geomagic Control X 2018; 3D Systems). Two-way ANOVA was used to assess the effect of manufacturing techniques and abutment tooth geometry on model accuracy (primary outcome). In addition, one-way ANOVA was used to assess significant differences between manufacturing techniques for complete arches, including abutments and unprepared teeth (secondary outcome). Tukey post hoc tests were used to compare means among groups. All statistical analyses considered a significant level of p ≤ 0.05.&lt;/p&gt;&lt;p&gt;&lt;strong&gt;Results: &lt;/strong&gt;Statistically significant interactions were observed between manufacturing technique and abutment tooth geometry, affecting both trueness (p &lt; 0.001) and precision (p &lt; 0.001). For trueness, DM exhibited the lowest RMS values (p &lt; 0.001), PC and DLP showed no significant difference (p = 0.056), and PLJ had significantly higher values than other techniques (p &lt; 0.001), while premolar and molar preparations displayed significantly lower discrepancies compared to other types (p &lt; 0.002). For precision, DM had the lowest values (p &lt; 0.001), with PC also showing low values (p &lt; 0.001), and no significant differences were observed between DLP and PLJ (p = 0.986). Veneer, premolar, and molar crown preparations demonstrated significantly lower RMS compared to anterior crowns.&lt;/p&gt;&lt;p&gt;&lt;strong&gt;Conclusion: &lt;/strong&gt;The design of the abutment tooth significantly influenced the trueness and precision of FDP casts obtained by digital and analog workflow. For trueness, DM exhibited the highest accuracy, outperforming PC, DLP, and PLJ and achieving better results with premolar and molar preparations compared to anterior crowns and veneers. For precision, DM was most accurate, followed by P","PeriodicalId":15988,"journal":{"name":"Journal of Esthetic and Restorative Dentistry","volume":" ","pages":""},"PeriodicalIF":3.2,"publicationDate":"2024-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142769701","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Digital Guides for Precise U-Shaped Splitting and Simultaneous Implant Placement With Minimal Surgical Trauma.","authors":"Xin Feng, Ziqianhong Wan, Xiaoxia Wang, Jin Wang, Xueqi Gan, Zhuoli Zhu","doi":"10.1111/jerd.13374","DOIUrl":"https://doi.org/10.1111/jerd.13374","url":null,"abstract":"<p><strong>Objective: </strong>The aim of this report is to present the workflow of a surgical procedure involving U-shaped splitting in an envelope flap with simultaneous implant placement using two digital guides for patients with insufficient bone width and labial concavity.</p><p><strong>Clinical consideration: </strong>Two digital guides and an envelope flap are proposed in this report. An implant drilling guide and an osteotomy guide guarantee the precise execution of surgical procedures. Using an envelope flap enhances the integrity of the labial mucoperiosteum, minimizing surgical trauma and improving the effect of bone augmentation.</p><p><strong>Conclusion: </strong>With the assistance of two digital guides, precise U-shaped splitting in an envelope flap can minimize surgical trauma and have a significant effect on horizontal bone augmentation.</p><p><strong>Clinical significance: </strong>This workflow considers the implant positions, the scope of osteotomy, and the kind of flap. It ensures minimal surgical trauma and excellent bone augmentation effect, which means predictable esthetic outcomes and stability in oral implantology, and provides a considerable solution for patients with insufficient bone width and labial concavity.</p>","PeriodicalId":15988,"journal":{"name":"Journal of Esthetic and Restorative Dentistry","volume":" ","pages":""},"PeriodicalIF":3.2,"publicationDate":"2024-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142729584","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Survival and Complications of Partial Coverage Restorations on Posterior Teeth-A Systematic Review and Meta-Analysis.","authors":"L S Prott, S Pieralli, P Klein, F A Spitznagel, F Ibrahim, M-I Metzendorf, A Carrasco-Labra, M B Blatz, P C Gierthmuehlen","doi":"10.1111/jerd.13353","DOIUrl":"10.1111/jerd.13353","url":null,"abstract":"<p><strong>Objective: </strong>To determine the clinical performance of partial coverage restorations (PCR) (onlays, occlusal veneers, and partial crowns) composed of different ceramic and ceramic-based materials to treat extended posterior defects.</p><p><strong>Materials and methods: </strong>MEDLINE, Scopus, CENTRAL, ClinicalTrials.gov, and the International Clinical Trials Registry Platform were searched (inception-February 2024) for randomized controlled trials (RCT) comparing posterior PCRs composed of different ceramic and ceramic-based materials with a minimum follow-up of 1 year.</p><p><strong>Results: </strong>Six RCTs were included. Resin matrix ceramic (RMC) and lithium disilicate (LDS) restorations had a 3-year survival rate of 89.3% (95% CI 76.4-95.3) and 93.7% (95% CI 83.7-97.7), respectively, and leucite-reinforced glass ceramic (LRGC) restorations a range between 96.1% (95% CI 90.1-98.9) compared with RMC and 98.3% (95% CI 90.8-100) compared with LDS. After 1-3 years of follow-up, LDS slightly outperformed RMC on restoration failure and loss of retention (1.56 more failures and 1.78 more loss of retentions for RMC per 100 restoration-years [low certainty evidence]). No statistically significant differences between ceramic and ceramic-based materials were detected in short-term follow-up (1-3 years of follow-up). The long-term performance of posterior PCRs is uncertain.</p><p><strong>Conclusion: </strong>The survival of LDS restorations may slightly outperform RMC restorations after 3 years of follow-up across outcomes, except for bulk fracture. RCTs providing medium to long-term data are needed.</p><p><strong>Clinical significance: </strong>Ceramic and ceramic-based PCRs are a reliable treatment option to restore extended posterior defects.</p>","PeriodicalId":15988,"journal":{"name":"Journal of Esthetic and Restorative Dentistry","volume":" ","pages":""},"PeriodicalIF":3.2,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142668282","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"B-Guide System: Improving the Predictability of Complete-Arch Implant and Prosthetic Placement Using Fixed Prosthesis Guides.","authors":"Luís Bessa, João Fonseca, Jorge André Cardoso, Maurice Salama, Irena Sailer, Luís Azevedo","doi":"10.1111/jerd.13369","DOIUrl":"https://doi.org/10.1111/jerd.13369","url":null,"abstract":"<p><strong>Objective: </strong>Computer-aided implant placement (CAIP) offers improved accuracy and reduced invasiveness. However, traditional static CAIP (sCAIP) protocols for complete-arch restorations often involve multiple guides and clinical steps, increasing the risk of soft tissue trauma and procedural complexity. This article introduces the B-guide technique, which integrates implant placement and interim prosthesis delivery into a single device to simplify the procedure and minimize tissue damage.</p><p><strong>Clinical considerations: </strong>The B-guide combines the implant osteotomy and placement guide with an abutment placement and prosthesis pick-up mechanism. The guide remains in place post-implantation, allowing immediate prosthesis conversion. A 55-year-old female patient underwent complete-arch rehabilitation using the B-guide, enabling immediate implant placement and loading. The B-guide minimized soft tissue trauma and eliminated the need for multiple guides, significantly reducing treatment complexity and time.</p><p><strong>Conclusions: </strong>The B-guide simplifies procedures and improves predictability compared with traditional systems by integrating prosthetic adaptation and implant placement, reducing cumulative errors. However, its success is heavily reliant on the operator's expertise, especially in preoperative planning and design.</p><p><strong>Clinical significance: </strong>By integrating implant and prosthesis placement into a single guide, the B-guide reduces surgical complexity, minimizes trauma, and enhances prosthetic outcomes, improving clinical efficiency.</p>","PeriodicalId":15988,"journal":{"name":"Journal of Esthetic and Restorative Dentistry","volume":" ","pages":""},"PeriodicalIF":3.2,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142675915","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Surface Roughness on Cementoenamel Junction After Rubber-Dam Clamp Application.","authors":"Ezgi Erden Kayalidere, Merve Sahin, Bora Korkut, Tangul Mudok, Funda Caliskan Yanikoglu","doi":"10.1111/jerd.13370","DOIUrl":"10.1111/jerd.13370","url":null,"abstract":"<p><strong>Objective: </strong>To investigate the surface roughness on cementoenamel junction after application of various rubber-dam retraction clamps for different durations.</p><p><strong>Materials and methods: </strong>Fifty-four extracted human molar teeth were used. Various retraction clamps were placed on the cementoenamel junction. There are three main examination groups in the study. Group 1 (n = 6) included a polymer clamp (SoftClamp, Kerr Hawe, Switzerland), Group 2 (n = 6) included a metal clamp with a flat edge (Black Line RDCM7X, Hu-Friedy Group, USA), and Group 3 (n = 6) included a metal clamp with a serrated edge (Fiesta Color Coded, Coltene, USA). All clamps were applied for 30 min, 1, and 2 h. Surface roughness measurements were performed using a profilometer before and after the clamp application and surface morphology was assessed through the SEM images. One-way ANOVA was used to compare three or more groups. Percentage changes were evaluated using the Kruskal-Wallis test, followed by Dunn's test for post hoc analyses. The deemed significance was set at p < 0.05.</p><p><strong>Results: </strong>Between the initial and the final roughness measurements, after 30 min of clamp application, only Group 3 showed significant increases in roughness (p = 0.001). After 1 and 2 h of clamp application, there were significant increases in roughness for all groups. No significant differences in percentage changes for all groups in 30 min and 2 h of application (p = 0.220 and p = 0.091, respectively). However, Group 1 presented significantly lower surface roughness in percentage after the 1 h of application (p = 0.040). No significant differences in the percentage changes in roughness were observed within the groups for 30 min, 1, and 2 h applications (p = 0.220, p = 0.884, and p = 0.755 for Groups 1, 2, and 3, respectively). In SEM analysis, deep point microstructure defects were seen as the clamp application time increased.</p><p><strong>Conclusions: </strong>Rubber-dam clamp application may cause damage to the cementoenamel junction area. However, the level of damage is clamp-type-dependent. Slight scratch-type damages were observed on teeth with plastic clamps, while metal clamps generally caused cracks. The increase in the duration of the same rubber-dam clamp application was not considered an effective factor regarding the damage.</p><p><strong>Clinical significance: </strong>During rubber-dam isolation, clamp type and duration of the application may cause damage to the tooth surface or progress an existing defect. Examining the teeth before selecting the clamp might be beneficial for minimizing dental tissue damage.</p>","PeriodicalId":15988,"journal":{"name":"Journal of Esthetic and Restorative Dentistry","volume":" ","pages":""},"PeriodicalIF":3.2,"publicationDate":"2024-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142668280","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}