Journal of Clinical and Experimental Dentistry最新文献

{"title":"Assessment of Color Stability and Translucency of Five High-Translucent Resin Composites.","authors":"José Giancarlo Tozo-Burgos, Marco Sánchez-Tito","doi":"10.4317/jced.64173","DOIUrl":"10.4317/jced.64173","url":null,"abstract":"<p><strong>Background: </strong>To evaluate and compare the color stability and translucency of high-translucent resin composites after exposure to distilled water and coffee.</p><p><strong>Materials and methods: </strong>Standardized disc-shaped specimens of five commercially available translucent resin composites (n = 60; 12 specimens per group) were fabricated and evaluated at three time points: baseline (T0), after 30 days in distilled water (T1), and after an additional 30 days in coffee (T2). Color was measured using a spectrophotometer and expressed as E00, while translucency was assessed using the translucency parameter (TP). Data were analyzed using non-parametric tests. The level of significance was set at 5%.</p><p><strong>Results: </strong>All materials showed a significant increase in color change after coffee exposure (p < 0.05). Beautifil II exhibited the highest discoloration at T2-T0 (17.76 [2.18]), followed by Forma Trans (14.93 [3.70]), whereas Opallis T Neutral showed the lowest values (8.31 [2.84]). At T1-T0, Opallis T Neutral also presented the lowest color change (1.42 [0.67]). Regarding translucency, Filtek Z350 XT Trans showed the highest TP values at T2 (15.38 [2.74]), while several materials, particularly Beautifil II (-4.08 [4.35]) and PALFIQUE LX5 (-4.60 [2.96]), exhibited reductions in TP after coffee immersion. Opallis T Neutral showed minimal variation in translucency (-0.19 [1.19]).</p><p><strong>Conclusions: </strong>High-translucent resin composites showed significant differences in optical stability. Coffee exposure increased discoloration and reduced translucency in most materials. Opallis T Neutral demonstrated the best overall performance.</p>","PeriodicalId":15376,"journal":{"name":"Journal of Clinical and Experimental Dentistry","volume":"18 8","pages":"e974-e981"},"PeriodicalIF":0.0,"publicationDate":"2026-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13428311/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148653987","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":"Analysis of the efficacy of photobiomodulation therapy in the treatment of oral lichen planus: A systematic review and meta-analysis of randomized and non-randomized clinical trials.","authors":"Lívia Maria Martins Aragão, Gabriella Alves Julião Costa, Janderson Fernando da Silva, Marcela Maria Fontes Borges Franco, Paulo Goberlânio de Barros Silva, Mário Rogério Lima Mota","doi":"10.4317/jced.63975","DOIUrl":"10.4317/jced.63975","url":null,"abstract":"<p><strong>Background: </strong>Oral lichen planus (OLP) is a chronic autoimmune disease that negatively affects patients' quality of life through symptoms such as pain, irritation, bleeding, and ulceration. Despite numerous therapeutic approaches, there is no definitive cure, and conventional corticosteroid therapy is often associated with prolonged use and adverse effects. Photobiomodulation therapy (PBMT) has emerged as a promising non-invasive alternative with no reported side effects. This systematic review aimed to evaluate the efficacy of PBMT in the treatment of OLP.</p><p><strong>Materials and methods: </strong>Electronic searches were conducted in PubMed, LILACS, Livivo, Scopus, Embase, Web of Science, and EBSCO up to March 1, 2025. Randomized and non-randomized clinical trials involving human participants were included, comparing PBMT with conventional pharmacological therapy. Risk of bias was assessed using the Cochrane tools, and the certainty of the evidence was evaluated using the GRADE approach.</p><p><strong>Results: </strong>A total of 4,118 studies were identified, and 15 met the inclusion criteria after screening. Meta-analysis showed that PBMT slightly reduced pain levels compared with conventional therapy but did not significantly affect disease severity or anxiety scores. However, PBMT was associated with higher rates of complete mucosal healing and lower recurrence rates in patients with erosive OLP.</p><p><strong>Conclusions: </strong>PBMT appears to be a safe and effective therapeutic alternative for the management of OLP, particularly by reducing pain, promoting mucosal healing, and decreasing lesion recurrence. These findings support its potential role in clinical practice, although further high-quality randomized clinical trials are warranted to strengthen the current evidence.</p>","PeriodicalId":15376,"journal":{"name":"Journal of Clinical and Experimental Dentistry","volume":"18 8","pages":"e1021-e1034"},"PeriodicalIF":0.0,"publicationDate":"2026-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13428310/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148653990","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":"Quantitative analysis of peri-implant collagen fiber orientation around external hexagon and Morse taper implant connections: A dog model study.","authors":"Daniel Sartorelli Marques de Castro, Jefferson David Melo de Matos, Jozely Francisca Mello Lima, Maria Angelica Rehder de Araujo, Mário Alexandre Coelho Sinhoreti, Daher Antonio Queiroz, Adriano Piattelli, Carlos Dos Reis Pereira de Araújo","doi":"10.4317/jced.64278","DOIUrl":"10.4317/jced.64278","url":null,"abstract":"<p><strong>Background: </strong>Peri-implant soft tissue stability depends on the implant-abutment interface and collagen fiber organization. Unlike natural teeth, peri-implant fibers exhibit a less favorable orientation, potentially weakening the biological seal. Implant connection design may influence this collagen arrangement and tissue integrity.</p><p><strong>Materials and methods: </strong>Eighteen immediately loaded implants (n = 9 per group) were placed in nine mongrel dogs. Group I received external hexagon implants, while Group II received Morse taper implants. After a 4-month healing period, animals were euthanized and specimens were processed for histological evaluation. Collagen fiber orientation was analyzed using polarized light microscopy and quantified with ImageJ software. Statistical analysis was performed using the Mann-Whitney U test ( = 0.05).</p><p><strong>Results: </strong>Group I exhibited predominantly parallel and parallel-oblique collagen fibers, with mean orientations of 19.88° (buccal) and 21.92° (lingual). In contrast, Group II showed mainly oblique and oblique-perpendicular fibers, with mean orientations of 70.20° (buccal) and 54.73° (lingual). No significant differences were observed between buccal and lingual aspects within each group (p > 0.05). However, a significant difference was observed between implant connection types, with Group II presenting a significantly higher proportion of oblique and oblique-perpendicular fibers compared with Group I (p = 0.004; r = 0.71).</p><p><strong>Conclusions: </strong>Morse taper implants were associated with a more perpendicular collagen fiber orientation, which may enhance the biological seal of peri-implant soft tissues.</p>","PeriodicalId":15376,"journal":{"name":"Journal of Clinical and Experimental Dentistry","volume":"18 8","pages":"e961-e967"},"PeriodicalIF":0.0,"publicationDate":"2026-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13428307/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148653709","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":"Digitally fabricated custom esthetic crowns for primary molars: A systematic review of in vitro and clinical evidence.","authors":"Mahrad Moradi, Mahtab Moradi, Maria Cruz Lorenzo-Luengo, Adrián Curto-Aguilera","doi":"10.4317/jced.64190","DOIUrl":"10.4317/jced.64190","url":null,"abstract":"<p><strong>Background: </strong>The use of digitally fabricated esthetic crowns for restoring primary molars has increased with the development of CAD/CAM systems, three-dimensional (3D) printing, and tooth-colored biomaterials. However, the available evidence remains heterogeneous, and the clinical role of customized digital crowns in comparison with conventional pediatric crowns is still unclear. This systematic review aimed to assess the available in vitro and clinical evidence on esthetic customized crowns fabricated using digital workflows for primary molars.</p><p><strong>Material and methods: </strong>A systematic literature search was conducted in PubMed, Scopus, and Web of Science to identify studies evaluating digitally fabricated esthetic crowns for primary molars. Eligible studies included in vitro investigations, clinical studies, randomized clinical trials, and finite element analyses assessing marginal or internal adaptation, fracture resistance, wear behavior, clinical performance, gingival health, or patient and parent satisfaction. Risk of bias was assessed using RoB 2 for clinical trials and the QUIN tool for in vitro studies. Due to heterogeneity in study designs, materials, comparators, and outcomes, a qualitative synthesis was performed.</p><p><strong>Results: </strong>Twenty-four studies were included, 17 in vitro studies, six clinical studies, and one finite element analysis. Most studies evaluated zirconia, 3D-printed resins, PMMA, CAD/CAM composites, or hybrid ceramics. In vitro findings suggested favorable marginal and internal adaptation for several customized digital crowns and material-dependent fracture resistance. Clinical studies reported acceptable short-term performance, although follow-up was generally limited and outcomes varied across materials. Stainless steel crowns remained a highly predictable comparator, while esthetic digital crowns showed potential advantages in esthetics and customization.</p><p><strong>Conclusions: </strong>Digitally fabricated esthetic crowns for primary molars represent a promising restorative alternative, but current evidence does not demonstrate consistent superiority over stainless steel crowns. Further well-designed clinical trials with longer follow-up and standardized outcomes are needed.</p>","PeriodicalId":15376,"journal":{"name":"Journal of Clinical and Experimental Dentistry","volume":"18 8","pages":"e952-e960"},"PeriodicalIF":0.0,"publicationDate":"2026-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13428314/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148653938","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":"Prediction of Orthodontic Extraction Decisions Using Machine Learning Algorithms: A Retrospective Study.","authors":"Alah Dawood Aldawoody, Shehab Ahmed Hamad","doi":"10.4317/jced.64288","DOIUrl":"10.4317/jced.64288","url":null,"abstract":"<p><strong>Background: </strong>Orthodontic extraction decision-making remains difficult and highly subjective, particularly in marginal cases where the clinicalcues are ambiguous. Objectives: To design machine learning (ML) models for prediction of extraction vs. non-extraction decision-making and estimate the influenceof key clinical predictors on such decisions.</p><p><strong>Material and methods: </strong>Retrospective analysis was performed on 120 patients with extraction and 80 patients without extraction from asample of pretreatment records over 2 years. Five ML models including Logistic Regression (LR), Random Forest (RF), Support VectorMachine (SVM), Decision Tree (DT) and XGBoost are employed in this research by applying Python's Scikit-learn. The datasetwas divided in two parts for training and testing at a ratio of 70:30. The sensitivity, specificity, accuracy and AUC-ROCwere used to evaluate and compare the performance of the models. In order to rank the most important features for decision-making, feature importance was calculated.</p><p><strong>Results: </strong>RF model provided the highest accuracy (93.5%) and AUC-ROC (0.95) values, whereas XGBoost was the second-bestmodel, with accuracy (90.2%) and AUC-ROC (0.92). Mandibular crowding (weight = 0.28) and IMPA (L1-MP angle,weight = 0.22) were the most influential predictors.</p><p><strong>Conclusions: </strong>Ensemble ML models, in particular RF, yield a promising objective methodology for clinical decision support in orthodontics topotentially lessen inter-clinician variation and enhance consistency in treatment planning.</p>","PeriodicalId":15376,"journal":{"name":"Journal of Clinical and Experimental Dentistry","volume":"18 8","pages":"e990-e997"},"PeriodicalIF":0.0,"publicationDate":"2026-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13428306/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148654006","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 water storage on the color stability and surface roughness of resin composites with S-PRG fillers subjected to additional polymerization for semidirect use.","authors":"Lilian Almeida Nascimento Rabêlo, Waldemir Francisco Vieira-Junior, Cecilia Pedroso Turssi, Fabiana Mantovani Gomes França, Roberta Tarkany Basting","doi":"10.4317/jced.64101","DOIUrl":"10.4317/jced.64101","url":null,"abstract":"<p><strong>Background: </strong>Additional polymerization in the semidirect technique improves the physicochemical properties of resin composites. However, the effects of long-term water storage on the color stability and surface roughness of resin composites containing S-PRG (Surface Pre-Reacted Glass) fillers remain unclear. This study evaluated the effect of autoclave polymerization on the color stability and surface roughness of a conventional nanohybrid resin composite and one containing S-PRG fillers after one year of water storage.</p><p><strong>Materials and methods: </strong>Disc-shaped specimens of Forma (Ultradent) and Beautifil II LS (Shofu; containing S-PRG fillers) were prepared (N = 48). Half of the specimens (n = 12) underwent additional autoclave polymerization. Color parameters (L*, a*, b*, Eab, E00) and surface roughness (Ra) were measured at baseline (24 h) and after 12 months of storage in distilled water. Scanning electron microscopy (SEM) was performed. Data were analyzed using generalized linear mixed models (=0.05).</p><p><strong>Results: </strong>Color variation (Eab and E00) was significantly greater for the resin composite containing S-PRG than for the conventional nanohybrid resin composite (p<0.05), whereas the polymerization method did not affect color variation (p>0.05). Ra values did not differ according to resin composite type or polymerization method (>0.05); however, all groups exhibited a significant increase after storage (<0.05). SEM revealed no differences attributable to the polymerization method.</p><p><strong>Conclusions: </strong>Additional autoclave polymerization did not influence the color stability or surface roughness of resin composites used in the semidirect technique. However, the resin composite containing S-PRG fillers exhibited lower long-term color stability, highlighting the influence of filler composition on esthetic durability.</p>","PeriodicalId":15376,"journal":{"name":"Journal of Clinical and Experimental Dentistry","volume":"18 8","pages":"e998-e1005"},"PeriodicalIF":0.0,"publicationDate":"2026-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13428313/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148653999","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":"Occupational diseases in dentistry: Prevention.","authors":"Carmen López-Carriches, Ricardo Taheri, Victoria Mateos-Moreno, Alán García-Marqués, Cristina Meniz-García, Cristina Madrigal-Martínez-Pereda, Isabel Leco-Berrocal","doi":"10.4317/jced.64047","DOIUrl":"10.4317/jced.64047","url":null,"abstract":"<p><strong>Background: </strong>Dentists, in the practice of their profession, are exposed to infectious diseases (most commonly hepatitis and HIV), biological accidents involving needles or sharp instruments and chemical intoxication from disinfectants, cements or dental resins. Also, they may suffer musculoskeletal disorders due to bad ergonomic postures, hearing loss and eye splashes or vision loss due to curing light, intense artificial lighting from dental units and constant visual strain in a limited space. Moreover, mental illnesses have been detected such as psychological issues like stress, fatigue, burnout, and depression. They are exposed to ionizing radiation and they may suffer from cancer more often than the general population.</p><p><strong>Materials and methods: </strong>A bibliographic search was carried out in the following electronic databases: PubMed/MEDLINE and the Cochrane Library Plus.</p><p><strong>Results: </strong>Musculoskeletal problems, infectious diseases, visual and hearing impairments, and psychological disorders are some of the occupational diseases dentists may develop during their careers. A series of preventive measures are analyzed and proposed.</p><p><strong>Conclusions: </strong>The practice of dentistry carries the risk of various types of occupational diseases, which must be understood and prevented.</p>","PeriodicalId":15376,"journal":{"name":"Journal of Clinical and Experimental Dentistry","volume":"18 7","pages":"e929-e933"},"PeriodicalIF":0.0,"publicationDate":"2026-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13386430/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148549352","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":"Comparative Evaluation of Different Teeth Whitening Agents on Extrinsic Stains: An In-Vitro Interventional Study.","authors":"Meghna Bhargava, Pallavi Vashisth, Sathyajith Naik N, Shivangi Sharma, Resham Payak, Shilpa Kumari","doi":"10.4317/jced.64122","DOIUrl":"10.4317/jced.64122","url":null,"abstract":"<p><strong>Background: </strong>Tooth discolouration caused by extrinsic factors such as medications and dietary chromogens is a common aesthetic concern. While various whitening agents are available, their effectiveness may vary depending on the type of stain and formulation. Natural alternatives are gaining attention due to their potential safety and cost-effectiveness.</p><p><strong>Materials and methods: </strong>60 extracted permanent maxillary incisors were randomly divided into two main groups based on staining agents: iron medication and pomegranate juice (n = 30 each). Each group was further subdivided into three subgroups (n = 10) based on the whitening modality used: whitening strips, whitening gel, and a customized herbal toothpaste containing banana peel extract. Staining procedures were carried out for 15 days, followed by a 14-day whitening protocol. Colour measurements were recorded at baseline, post-staining, and post-whitening using a spectrophotometer based on the CIE Lab* system. Colour change (E) was calculated and statistically analysed using paired t-test, unpaired t-test, and ANOVA.</p><p><strong>Results: </strong>Both staining agents produced significant tooth discolouration, with iron causing greater staining than pomegranate juice. All whitening modalities resulted in reduction of E values; however, the herbal formulation showed the highest improvement (p value = 0.00000878*), followed by whitening strips and whitening gel. Pomegranate-induced stains demonstrated greater reversibility compared to iron-induced stains. Statistical analysis revealed significant intra-group and inter-group differences (p &lt; 0.05).</p><p><strong>Conclusions: </strong>The effectiveness of tooth-whitening agents is influenced by both stain type and treatment modality. The banana peel-based herbal formulation demonstrated promising whitening potential and may serve as a safe and effective alternative to conventional agents. Further in vivo studies are recommended to confirm these findings.</p>","PeriodicalId":15376,"journal":{"name":"Journal of Clinical and Experimental Dentistry","volume":"18 7","pages":"e911-e920"},"PeriodicalIF":0.0,"publicationDate":"2026-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13386441/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148549276","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":"Prevalence of mandibular biradicular canines using cone-beam computed tomography. A cross-sectional study.","authors":"Carla Melani Mayan-Revollo, Jhoana Mercedes Llaguno-Rubio, Gustavo Adolf Fiori-Chíncharo, Luis Ernesto Arriola-Guillén","doi":"10.4317/jced.64125","DOIUrl":"10.4317/jced.64125","url":null,"abstract":"<p><strong>Background: </strong>Mandibular biradicular canines correspond to a rare anatomical variant. The objective of this study was to determine the prevalence of mandibular biradicular canines using cone-beam computed tomography (CBCT) in order to enable timely recognition of this clinically relevant condition, as it influences the planning and success of procedures in specialties such as endodontics, orthodontics, oral surgery, among others.</p><p><strong>Materials and methods: </strong>A cross-sectional and retrospective study was conducted analyzing 1130 CBCT volumes acquired with a Planmeca ProMax 3D MID scanner at a resolution of 200 µm, performed between October 2024 and October 2025 in a private imaging center in La Paz, Bolivia. The root morphology of mandibular canines was evaluated in patients older than 13 years in whom this area could be properly assessed. Three-dimensional evaluation was performed using Romexis 6 software in the multiplanar reconstruction window. Each canine was centered along its longitudinal axis, and a sweep was performed from crown to apex, in the coronal plane from buccal to lingual, and in the sagittal plane from mesial to distal, allowing visualization of root bifurcations. The presence of anatomical variants was then recorded. Fisher's exact test and Student's t-test were used, with a significance level of P &lt; 0.05.</p><p><strong>Results: </strong>The study revealed a prevalence of 1.7% for this condition. Women showed a higher incidence (2.3%) compared to men (0.8%). Most cases were unilateral, with a predominance of root bifurcation at the middle third. Notably, 100% of identified cases presented a buccolingual orientation of the roots, a finding of clinical importance due to the potential for structural superimposition.</p><p><strong>Conclusions: </strong>The results underscore the importance of considering this anatomical variant during the planning of dental treatments, particularly in endodontic, orthodontic, and surgical procedures, to avoid complications. Although its prevalence is low, recognizing this variant can contribute to improved treatment prognosis in affected patients.</p>","PeriodicalId":15376,"journal":{"name":"Journal of Clinical and Experimental Dentistry","volume":"18 7","pages":"e897-e902"},"PeriodicalIF":0.0,"publicationDate":"2026-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13386431/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148549301","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":"Impact of multi-step vs one-step finishing and polishing techniques on color stability of omnichroma composite restorations: In vitro spectrophotometric analysis.","authors":"Giorgia Lanzaretti, Khalil Fari, Thiago Oliveira-Gamba, Francesca Zotti","doi":"10.4317/jced.64171","DOIUrl":"10.4317/jced.64171","url":null,"abstract":"<p><strong>Background: </strong>This in vitro study aimed to analyze, using a spectrophotometer, the outcomes of two finishing and polishing techniques for composite restorations and to evaluate their color stability after exposure to a staining agent.</p><p><strong>Materials and methods: </strong>Standardized class V cavities were prepared on sixty extracted intact molars and restored with Omnichroma composite (Omnichroma, Tokuyama Dental Corporation Inc., Tokyo, Japan) . The samples were divided into two groups: Group 1, finished and polished with the multi-step Astropol technique (Ivoclar Vivadent, Liechtenstein), and Group 2, finished and polished with the one-step Enhance technique (Dentsply Sirona, USA). Color changes were evaluated using a spectrophotometer immediately after polishing with each technique (T1) and after two weeks of immersion in a staining agent (T2). Color differences (E) were calculated for intergroup and intragroup analyses.</p><p><strong>Results: </strong>No statistically significant differences were detected immediately after polishing (T1, p=0.059); however, significant variations emerged after immersion in the staining agent (T2, p&lt;0.001).</p><p><strong>Conclusions: </strong>Intragroup analysis showed significant E changes for the Enhance group (p&lt;0.001) but not for the Astropol group (p=0.724). Both groups, however, exhibited E &gt; 2, indicating a perceptible color difference between the restoration and sound dental tissue.</p>","PeriodicalId":15376,"journal":{"name":"Journal of Clinical and Experimental Dentistry","volume":"18 7","pages":"e872-e880"},"PeriodicalIF":0.0,"publicationDate":"2026-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13386451/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148549387","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}