Journal of Clinical and Experimental Dentistry最新文献

{"title":"Cost efficiency of calcium silicate and glass ionomer cements in pulpotomies of first mandibular primary molars.","authors":"Danilo Renato Valencia-Linares, Kilder Maynor Velasquez-Carhuapoma, Julissa Amparo Dulanto-Vargas, Kilder Maynor Carranza-Samanez","doi":"10.4317/jced.63481","DOIUrl":"10.4317/jced.63481","url":null,"abstract":"<p><strong>Background: </strong>Calcium silicate cements (CSCs) and glass ionomer cements (GICs) are widely used in pulpotomy procedures because of their favorable biocompatibility, adhesive properties, and mechanical performance. However, limited evidence is available regarding the economic implications of their clinical use. This study evaluated the cost efficiency of CSCs and GICs used in pulpotomies of mandibular primary first molars (MPFMs).</p><p><strong>Materials and methods: </strong>An in vitro experimental study was conducted using 72 MPFMs with standardized Class I cavities. The teeth were randomly allocated into six groups (n=12), combining two CSCs (mineral trioxide aggregate [MTA Angelus®] and Biodentine®) and three GICs (Vitremer®, Fuji IX® and Ketac Molar®). The cements were assessed according to commercial costs (per kit, per gram, and per dose), treatment-related costs (gross cost: material placed; actual cost: material prepared), and material utilization efficiency, defined as the gross-to-actual cost ratio. Data were analyzed using one-way ANOVA followed by Tukey's post hoc test (p<0.05).</p><p><strong>Results: </strong>Among the CSCs, Biodentine showed the highest actual cost, whereas MTA Angelus showed the highest gross cost and greater utilization efficiency. Among the GICs, Vitremer presented the highest gross and actual costs, while Fuji IX and Ketac Molar demonstrated the highest utilization efficiency. The highest actual cost was observed for the Biodentine + Vitremer combination (USD 25.0), and the lowest for MTA Angelus + Fuji IX (USD 18.6). The highest efficiency ratios were found for MTA Angelus combined with Ketac Molar (53.36%) and with Vitremer (41.89%), whereas the remaining combinations showed values ≤25.62% (p<0.001).</p><p><strong>Conclusions: </strong>Significant differences in cost efficiency were identified among the materials evaluated. Overall, MTA Angelus combined with Ketac Molar demonstrated the greatest cost efficiency for pulpotomy procedures. Optimization of material presentations and dose sizes may reduce material waste and overall treatment costs.</p>","PeriodicalId":15376,"journal":{"name":"Journal of Clinical and Experimental Dentistry","volume":"18 9","pages":"e1035-e1045"},"PeriodicalIF":0.0,"publicationDate":"2026-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13677096/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149220346","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 preheating on the degree of conversion, rheological behavior, and microhardness of resin composites: An in vitro ATR-FTIR and mechanical analysis.","authors":"Chinmay Dattatraya Bhat, Gowrish S Bhat, Vandana Sadananda","doi":"10.4317/jced.64273","DOIUrl":"10.4317/jced.64273","url":null,"abstract":"<p><strong>Background: </strong>Preheating of resin composites is recommended as a strategy to enhance flowability, curing efficiency, and mechanical characteristics during restorative procedures. However, the influence of preheating on different resin matrix systems remains variable and material dependent. This study aimed to assess the impact of preheating on the degree of conversion, rheological behavior, and Vickers microhardness of resin composites with different resin matrix systems.</p><p><strong>Materials and methods: </strong>Three light-cured resin composites comprising Bis-GMA-rich, UDMA-rich, and TEGDMA-rich formulations were evaluated under room temperature and preheated conditions. A total of 150 specimens were prepared and analyzed for degree of conversion using ATR-FTIR spectroscopy, rheological behavior using a rotational rheometer, and Vickers microhardness employing a microhardness indenter. Statistical comparisons were conducted with Student's t-test, one-way ANOVA, and Tukey HSD post hoc tests.</p><p><strong>Results: </strong>Preheating produced a statistically significant rise in the degree of conversion and Vickers microhardness values in all tested resin composite groups (p<0.05). TEGDMA-rich composites demonstrated the highest degree of conversion values, whereas UDMA-rich composites demonstrated the highest microhardness values. Rheological analysis demonstrated alterations in viscosity and flow behavior following preheating among the evaluated resin composites.</p><p><strong>Conclusions: </strong>Preheating improved the polymerization efficiency, flow characteristics, and microhardness of resin composites. Preheating may therefore be considered a beneficial clinical approach for improving the handling and mechanical performance of restorative composites.</p>","PeriodicalId":15376,"journal":{"name":"Journal of Clinical and Experimental Dentistry","volume":"18 9","pages":"e1060-e1067"},"PeriodicalIF":0.0,"publicationDate":"2026-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13677097/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149220473","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":"Curcumin in oral potentially malignant disorders and oral squamous cell carcinoma: Clinical and biological evidence from a systematic review.","authors":"Andrea Maturana-Ramírez, Gabriel Rojas-Zúñiga, Cristóbal Soza Cisternas, Juan Aitken-Saavedra","doi":"10.4317/jced.64298","DOIUrl":"10.4317/jced.64298","url":null,"abstract":"<p><strong>Background: </strong>Oral squamous cell carcinoma is associated with poor survival and frequently develops from oral potentially malignant disorders, particularly oral leukoplakia and oral lichen planus. Conventional management is mainly based on the removal of clinically altered areas; however, the risk of progression may persist. In this context, curcumin, a natural compound derived from turmeric with antioxidant, anti-inflammatory, and antineoplastic properties, has been investigated as a potential therapeutic alternative.</p><p><strong>Materials and methods: </strong>A qualitative systematic review was conducted following the Cochrane Handbook and PRISMA guidelines. Literature was searched in MEDLINE (PubMed), Web of Science, Scopus, and SciELO (September-December 2025), including human studies from the last 15 years in English, Spanish, or Portuguese. Studies on adult patients with oral leukoplakia, oral lichen planus, or oral squamous cell carcinoma treated with curcumin or Curcuma longa derivatives (oral or topical) were included. Outcomes assessed included clinical efficacy (lesion size and symptoms), anti-inflammatory effects, and molecular biomarkers.</p><p><strong>Results: </strong>A total of 1,527 articles were identified, of which 18 met the inclusion criteria, comprising 1,189 participants. Most studies were clinical trials. In oral leukoplakia, all studies reported clinical improvement, mainly reflected by lesion size reduction, although without consistent histopathological changes. In oral lichen planus, eight of ten studies showed reductions in pain and lesion size, with decreases in VAS scores and statistically significant differences (p<0.05). Relevant reductions in lesion size were also observed (p<0.05). In oral squamous cell carcinoma, a significant decrease in inflammatory cytokines (IL-1β, IL-8, TNF-α) was reported. Comparable efficacy to corticosteroids was observed in most comparative studies.</p><p><strong>Conclusions: </strong>The use of curcumin appears to provide favorable clinical effects and relevant anti-inflammatory benefits in oral leukoplakia, oral lichen planus, and oral squamous cell carcinoma, mainly reflected by reductions in pain and lesion size. However, further well-designed clinical trials are required to confirm its efficacy and to better define its role in clinical practice.</p>","PeriodicalId":15376,"journal":{"name":"Journal of Clinical and Experimental Dentistry","volume":"18 9","pages":"e1076-e1086"},"PeriodicalIF":0.0,"publicationDate":"2026-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13677102/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149220379","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":"Biomechanical stability and monitoring technologies of implant-supported prosthetic components.","authors":"Jefferson David Melo de Matos, Mário Alexandre Coelho Sinhoreti, Mauricio Schneider, Robert Dobrin, Daher Antonio Queiroz","doi":"10.4317/jced.64338","DOIUrl":"10.4317/jced.64338","url":null,"abstract":"<p><strong>Background: </strong>Mechanical stability is a critical factor for the long-term success of implant-supported rehabilitations. The maintenance of preload within the implant-abutment complex plays a fundamental role in preventing prosthetic complications, particularly screw loosening and loss of joint stability. Advances in monitoring technologies, including ultrasonic methods, piezoelectric sensors, and electromechanical impedance techniques, have introduced new possibilities for the early detection of biomechanical alterations in implant-supported prosthetic components.</p><p><strong>Materials and methods: </strong>A structured narrative review was performed through comprehensive literature searches in PubMed/MEDLINE, Scopus, Web of Science and SciELO databases. The retrieved literature was critically analyzed according to biomechanical principles, preload maintenance, screw loosening mechanisms and emerging monitoring technologies.</p><p><strong>Results: </strong>The reviewed studies demonstrated that preload maintenance is essential for the biomechanical stability and longevity of implant-supported rehabilitations. Prosthetic screw loosening was identified as a prevalent mechanical complication, especially under cyclic and non-axial loading conditions. Internal conical and Morse taper connections generally showed improved preload maintenance compared with external hexagon systems. Additionally, ultrasonic monitoring, piezoelectric sensors, and electromechanical impedance methods demonstrated potential for early detection of preload loss and biomechanical instability. Although promising, most monitoring technologies remain limited to experimental investigations.</p><p><strong>Conclusions: </strong>Mechanical stability in implant-supported rehabilitations is strongly associated with preload preservation and implant-abutment integrity. Advanced monitoring technologies show promising potential for improving the early diagnosis of biomechanical instability; however, further prospective clinical studies are required before routine clinical implementation can be recommended.</p>","PeriodicalId":15376,"journal":{"name":"Journal of Clinical and Experimental Dentistry","volume":"18 9","pages":"e1103-e1112"},"PeriodicalIF":0.0,"publicationDate":"2026-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13677092/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149220333","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":"Etidronate-enhanced sodium hypochlorite irrigation in root canal therapy: A scoping review of efficacy and safety.","authors":"María Mihaela Iuga, Tatiana Ramírez-Mora, Stefan Vasile Stefanescu, Fernando Mauricio Espada-Salgado","doi":"10.4317/jced.64364","DOIUrl":"10.4317/jced.64364","url":null,"abstract":"<p><strong>Background: </strong>Continuous chelation with sodium hypochlorite (NaOCl) and etidronic acid (HEDP) has been proposed for root canal irrigation. However, its efficacy and safety compared with sequential regimens remain unclear. To map evidence on the efficacy and safety of NaOCl + HEDP in root canal treatment.</p><p><strong>Materials and methods: </strong>A scoping review was conducted according to Joanna Briggs Institute guidance and reported following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses extension for Scoping Reviews. Web of Science, Scopus, PubMed/MEDLINE, Embase, and the Virtual Health Library were searched up to October 31, 2025. Of 576 records, 10 studies were included (6 in vitro, 3 ex vivo, and 1 clinical). Data were charted on study design, irrigation protocols, comparators, antimicrobial effects, cleaning outcomes, material compatibility, biomarkers, and postoperative pain.</p><p><strong>Results: </strong>Preclinical studies showed antimicrobial activity comparable to or greater than NaOCl alone or sequential NaOCl followed by ethylenediaminetetraacetic or citric acid. Continuous chelation was associated with improved apical smear layer removal and dentinal tubule patency, particularly with sonic or ultrasonic activation. Chemical and material compatibility was generally acceptable. The only randomized clinical trial reported higher pain during the first 48 hours, but no differences in analgesic intake or later pain.</p><p><strong>Conclusions: </strong>Preclinical evidence suggests that NaOCl + HEDP may improve apical cleaning while maintaining antimicrobial activity and acceptable compatibility. However, because the evidence is predominantly laboratory-based and only one clinical trial was identified, clinical superiority and safety cannot yet be established. Further randomized clinical trials are needed.</p>","PeriodicalId":15376,"journal":{"name":"Journal of Clinical and Experimental Dentistry","volume":"18 9","pages":"e1113-e1122"},"PeriodicalIF":0.0,"publicationDate":"2026-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13677099/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149220435","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":"Effects of elevated extrinsic-stain firing temperatures on the optical, surface, and mechanical properties of lithium disilicate ceramics.","authors":"Matheus Morcela de Souza, Cássia Cunha de Lima, José Vitor Quinelli Mazaro, Natália Almeida Bastos Bitencourt, Letícia Moretti, Sandy Gabrielle Giorgetti Pereira, Débora Novais da Silva, Ana Carolina da Conceição Sanches, Marcella Santos Januzzi, André Luíz de Melo Moreno, Marcelo Coelho Goiato, Daniela Micheline Dos Santos","doi":"10.4317/jced.64313","DOIUrl":"10.4317/jced.64313","url":null,"abstract":"<p><strong>Background: </strong>This study evaluated the effect of different firing temperatures of extrinsic staining, including temperatures higher than those recommended by the manufacturer, on the optical properties, surface roughness, and microhardness of lithium disilicate ceramics.</p><p><strong>Materials and methods: </strong>IPS e.max CAD blocks (Ivoclar) were sectioned and allocated into six groups (n=10) according to surface treatment: glaze only or glaze plus extrinsic staining, fired at 710°C, 770°C, or 820°C. A2 shade pigment paste (Ivoclar) was applied and fired according to manufacturer recommendations, followed by glazing at the same temperature. Color stability (ΔE00), translucency parameter (TP), and contrast ratio (CR) were assessed with a UV-visible spectrophotometer, surface roughness (Ra) was measured using contact profilometry and Vickers microhardness (MH) was obtained using a microdurometer. Data were analyzed with Shapiro-Wilk, Friedman or ANOVA, and Wilcoxon tests, with α=0.05.</p><p><strong>Results: </strong>For optical properties, firing at 770°C resulted in the lowest ΔE00 values, while 820°C yielded the highest TP values. CR differences before and after crystallization were significant in all groups except those fired at 820°C. Glazing significantly reduced surface roughness in all groups (p<0.001), with lower Ra values at 770°C and 820°C, independent of staining. Increased microhardness after stain+glaze was observed at 770°C.</p><p><strong>Conclusions: </strong>Firing at 770°C improved color stability and surface smoothness, while increased microhardness was observed when extrinsic stain and glaze were combined at this temperature. Firing temperature significantly influenced the optical properties and surface roughness of extrinsically stained lithium disilicate ceramics, with 770°C providing the most favorable balance between color stability and surface smoothness.</p>","PeriodicalId":15376,"journal":{"name":"Journal of Clinical and Experimental Dentistry","volume":"18 9","pages":"e1087-e1094"},"PeriodicalIF":0.0,"publicationDate":"2026-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13677098/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149220419","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 printing angle on the mechanical and surface properties of 3D-printed hybrid resins for indirect restorations: An in vitro study.","authors":"Laura Buarque Caminha Lins, Pedro Thiago de Oliveira Neves, Anny Caroline Rodrigues Acioli, Ana Luisa Cassiano Alves Bezerra, Bruno Gustavo da Silva Casado, Rafaella de Souza Leão","doi":"10.4317/jced.64422","DOIUrl":"10.4317/jced.64422","url":null,"abstract":"<p><strong>Background: </strong>3D-printed hybrid resins are promising. However, some parameters, such as the printing angle, may affect their performance, and the available evidence is still limited. The purpose of this study was to evaluate the influence of different printing angles (0º, 45º, and 90º) on the mechanical and surface properties of 3D-printed hybrid resins.</p><p><strong>Materials and methods: </strong>Groups were defined by printing angle (0°, 45°, 90°) and two resin types: VarseoSmile Crown Plus (VS) and PriZma Bio Crown (PB). Tests included flexural strength (n=10), surface roughness (n=12), microhardness (n=12), and contact angle (n=12). Statistical analyses compared materials (t-tests or Mann-Whitney) and printing angles (ANOVA or Kruskal-Wallis).</p><p><strong>Results: </strong>Flexural strength varied only in VS, with 90° showing the best results. Roughness was influenced in all groups, with 0° producing the lowest values. For microhardness, VS performed best at 90° and 45°, while PB performed best at 0° and 90°. Contact angle differences appeared only in VS, with 45° showing the greatest wettability.</p><p><strong>Conclusions: </strong>The printing angle affected most properties. A 0° angle yielded the best surface roughness for all materials and the best microhardness for PB. A 45° angle showed a favorable contact angle. A 90° angle was most suitable for flexural strength.</p>","PeriodicalId":15376,"journal":{"name":"Journal of Clinical and Experimental Dentistry","volume":"18 9","pages":"e1142-e1147"},"PeriodicalIF":0.0,"publicationDate":"2026-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13677100/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149220432","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 dentin depth and hemostatic contamination on microtensile bond strength of a universal adhesive: Effect of phosphoric acid re-etching as a rescue protocol.","authors":"Gaurav Patri, Debkant Jena, Prasanti Kumari Pradhan, Pratik Agrawal, Akansha Tilokani, Swadheena Patro","doi":"10.4317/jced.64286","DOIUrl":"10.4317/jced.64286","url":null,"abstract":"<p><strong>Background: </strong>This study evaluated the influence of dentin depth and surface treatment on the microtensile bond strength (µTBS) of a universal adhesive to dentin contaminated with an aluminum chloride hemostatic agent, and assessed the effectiveness of phosphoric acid re-etching as a contamination management strategy.</p><p><strong>Materials and methods: </strong>Sixty extracted human third molars were assigned to six groups (n=10) based on dentin depth (superficial or deep) and surface treatment (control, contamination, and contamination followed by phosphoric acid re-etching). A universal adhesive was applied in self-etch mode for control and contamination groups, and in etch-and-rinse mode following the rescue protocol. Composite build-up was performed and specimens were thermocycled (10,000 cycles). µTBS was measured using a universal testing machine. Data were analyzed using two-way ANOVA and Tukey's post hoc test (p<0.05). Failure modes were evaluated using stereomicroscopy and analyzed with Pearson's chi-square test.</p><p><strong>Results: </strong>Superficial dentin demonstrated significantly higher µTBS than deep dentin (p<0.001). Aluminum chloride contamination significantly reduced bond strength in both substrates (p<0.05). Phosphoric acid re-etching significantly improved bond strength in superficial dentin (p<0.05) but did not restore control values. In deep dentin, the rescue protocol did not significantly improve bond strength (p>0.05). A significant interaction between dentin depth and surface treatment was observed (p=0.001).</p><p><strong>Conclusions: </strong>Dentin depth significantly influences the effectiveness of contamination management strategies. Phosphoric acid re-etching partially restores bond strength in superficial dentin but is ineffective in deep dentin, indicating that contamination management is substrate-dependent.</p>","PeriodicalId":15376,"journal":{"name":"Journal of Clinical and Experimental Dentistry","volume":"18 9","pages":"e1068-e1075"},"PeriodicalIF":0.0,"publicationDate":"2026-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13677105/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149220490","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":"Factors associated with orthodontist's decision to indicated orthodontic camouflage or orthognathic surgery in skeletal class III malocclusions without growth.","authors":"Claudia Carranza-Buenaño, Mariano Ortiz-Pizarro, Marcos Jimmy Carruitero-Honores","doi":"10.4317/jced.64160","DOIUrl":"10.4317/jced.64160","url":null,"abstract":"<p><strong>Background: </strong>The therapeutic decision depends on a complex set of factors related to both the patient and the professional.</p><p><strong>Aim: </strong>To determine the factors associated with the orthodontist's decision to prescribe orthodontic camouflage or orthognathic surgery in skeletal Class III malocclusions without growth.</p><p><strong>Materials and methods: </strong>An online survey was conducted with 271 orthodontists. The validity and reliability of a 16-question questionnaire were determined, and submission links were generated using SurveyMonkey software. The instrument was distributed via social media and email, achieving an 80% response rate. Pearson's chi-squared test and binomial logistic regression was used.</p><p><strong>Results: </strong>All factors evaluated were considered important in the treatment decision (p<0.001). The gonial angle was a significant risk factor (OR:5.36; 95%CI:1.53-18.72; p=0.009), as was anterior crossbite (OR:49.14; 95%CI:2.61-92.59; p=0.009). Occlusal stability (OR:0.01; 95%CI:0.00-0.29; p=0.009), third molar position and space (OR:0.14; 95%CI: 0.07-0.30; p<0.001) were protective factors. The orthodontist's experience of up to 10 years (OR:0.12; 95%CI:0.04-0.36; p<0.001), up to 40 years (OR:0.22; 95%CI:0.08-0.60; p=0.003), along with training through courses or internships (OR:0.08; 95%CI:0.04-0.18; p<0.001) or a second specialty (OR:0.37; 95%CI:0.15-0.93; p=0.035), also acted as protective factors. The proposed model has a moderately good fit (p=0.400).</p><p><strong>Conclusions: </strong>Orthodontic camouflage is the most common treatment option for Class III malocclusion. The gonial angle and anterior crossbite predispose to orthognathic surgery; while occlusal stability, the presence and spacing of the lower third molar, along with greater professional experience and surgical training, are associated with a lower likelihood of indicating surgery.</p>","PeriodicalId":15376,"journal":{"name":"Journal of Clinical and Experimental Dentistry","volume":"18 9","pages":"e1052-e1059"},"PeriodicalIF":0.0,"publicationDate":"2026-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13677104/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149220438","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 cavity margin location and preparation technique on microleakage of Class V composite restorations: An in vitro study.","authors":"Mauricio Schneider, Jefferson David Melo de Matos, Leonardo Galeazzi Farina, Letícia Krummenauer, Mário Alexandre Coelho Sinhoreti, Robert Dobrin, Daher Antonio Queiroz","doi":"10.4317/jced.64365","DOIUrl":"10.4317/jced.64365","url":null,"abstract":"<p><strong>Background: </strong>The characteristics of the prepared dental substrate and the cavity preparation technique may influence the quality of the adhesive interface and the marginal sealing of composite restorations. Ultrasonic cavity preparation using Chemical Vapor Deposition (CVD) diamond tips has been proposed as a minimally invasive alternative to conventional rotary instrumentation. This study aimed to evaluate the influence of cavity preparation techniques and cavity margin location on the microleakage of Class V composite resin restorations.</p><p><strong>Materials and methods: </strong>Twenty-four sound human third molars were used to prepare 48 standardized Class V cavities located at the cemento-enamel junction. Cavities were prepared using either a conventional high-speed diamond bur (KG Sorensen®) or an ultrasonic CVD diamond tip (CVDentus®). All preparations were restored with a fifth-generation etch-and-rinse adhesive system and a microhybrid composite resin. Following storage in distilled water at 37°C for seven days, specimens were immersed in 0.5% rhodamine B solution for 24 h, sectioned longitudinally, and evaluated under stereomicroscopy (40×). Microleakage was scored using a four-point ordinal scale. Data were analyzed using the Friedman nonparametric test and multiple comparisons (α=0.05).</p><p><strong>Results: </strong>The highest microleakage scores were observed in cavities with dentin margins. Mean rank values were 3.46 for the conventional bur/dentin group, 1.69 for the conventional bur/enamel group, 3.10 for the ultrasonic CVD/dentin group, and 1.75 for the ultrasonic CVD/enamel group. Groups with dentin margins showed significantly greater microleakage than enamel margins (p<0.05), whereas no significant differences were observed between conventional and ultrasonic cavity preparation (p>0.05).</p><p><strong>Conclusions: </strong>Cavity margin location significantly influenced microleakage, whereas the cavity preparation technique did not. Dentin margins exhibited significantly greater dye penetration than enamel margins regardless of the preparation method. Ultrasonic cavity preparation using CVD diamond tips demonstrated marginal sealing comparable to conventional rotary instrumentation and may be considered a viable alternative for minimally invasive restorative procedures.</p>","PeriodicalId":15376,"journal":{"name":"Journal of Clinical and Experimental Dentistry","volume":"18 9","pages":"e1123-e1129"},"PeriodicalIF":0.0,"publicationDate":"2026-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13677095/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149220460","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}