International Journal of Dentistry最新文献

{"title":"Characteristics of Self-Rated Oral Health among Syrian Refugee Parents in Ontario.","authors":"Aseel Alzaghoul, Parmin Rahimpoor-Marnani, Khalid Yunis, Akm Alamgir, Baraa Alghalyini, Hala Tamim","doi":"10.1155/2023/4136520","DOIUrl":"10.1155/2023/4136520","url":null,"abstract":"<p><strong>Background: </strong>Canada has been hosting Syrian refugees since early 2015. Almost half of the Syrian refugee population lives in Ontario, with dental health being at the top of the list of important immediate needs. The objective of the study was to evaluate self-rated oral health and its associated factors among Syrian refugee parents residing in Ontario.</p><p><strong>Methods: </strong>This was a cross-sectional study where 540 Syrian refugee parents, residing in Ontario and with at least one child less than 18 years of age, were interviewed. Information about self-rated oral health was collected based on the question \"In general, how would you rate the health of your teeth and mouth?\" with answers ranging from 1 representing \"excellent\" and 5 representing \"very poor.\" Multiple linear regression analysis was performed to assess the independent relationship between each of the sociodemographic-, migration-, health-, dental-related factors, and self-rated oral health.</p><p><strong>Results: </strong>The overall prevalence of poor and very poor self-rated oral health was 43.5%. The results showed that the presence of dental health insurance, private sponsorship, improved physical and mental health, and regular visits to the dentist were factors related to improved oral health. <i>Discussion</i>. To achieve better oral health outcomes among refugee populations, including Syrian refugees, efforts should be focused on improving dental care and dental insurance for vulnerable populations.</p>","PeriodicalId":13947,"journal":{"name":"International Journal of Dentistry","volume":"2023 ","pages":"4136520"},"PeriodicalIF":2.1,"publicationDate":"2023-11-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10691882/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138477543","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 Intraoral Scanners, Operators, and Data Processing on Dimensional Accuracy of Dental Casts for Unsupervised Clinical Machine Learning: An In Vitro Comparative Study.","authors":"Taseef Hasan Farook, Saif Ahmed, Jamal Giri, Farah Rashid, Toby Hughes, James Dudley","doi":"10.1155/2023/7542813","DOIUrl":"10.1155/2023/7542813","url":null,"abstract":"<p><strong>Purpose: </strong>This study assessed the impact of intraoral scanner type, operator, and data augmentation on the dimensional accuracy of in vitro dental cast digital scans. It also evaluated the validation accuracy of an unsupervised machine-learning model trained with these scans.</p><p><strong>Methods: </strong>Twenty-two dental casts were scanned using two handheld intraoral scanners and one laboratory scanner, resulting in 110 3D cast scans across five independent groups. The scans underwent uniform augmentation and were validated using Hausdorff's distance (HD) and root mean squared error (RMSE), with the laboratory scanner as reference. A 3-factor analysis of variance examined interactions between scanners, operators, and augmentation methods. Scans were divided into training and validation sets and processed through a pretrained 3D visual transformer, and validation accuracy was assessed for each of the five groups.</p><p><strong>Results: </strong>No significant differences in HD and RMSE were found across handheld scanners and operators. However, significant changes in RMSE were observed between native and augmented scans with no specific interaction between scanner or operator. The 3D visual transformer achieved 96.2% validation accuracy for differentiating upper and lower scans in the augmented dataset. Native scans lacked volumetric depth, preventing their use for deep learning.</p><p><strong>Conclusion: </strong>Scanner, operator, and processing method did not significantly affect the dimensional accuracy of 3D scans for unsupervised deep learning. However, data augmentation was crucial for processing intraoral scans in deep learning algorithms, introducing structural differences in the 3D scans. <i>Clinical Significance</i>. The specific type of intraoral scanner or the operator has no substantial influence on the quality of the generated 3D scans, but controlled data augmentation of the native scans is necessary to obtain reliable results with unsupervised deep learning.</p>","PeriodicalId":13947,"journal":{"name":"International Journal of Dentistry","volume":"2023 ","pages":"7542813"},"PeriodicalIF":2.1,"publicationDate":"2023-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10686707/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138459788","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":"Antimicrobial Efficiency of Hypochlorous Acid and Its Effect on Some Properties of Alginate Impression Material","authors":"Bayan S. Khalaf, Shorouq M. Abass, Aseel Mohammed Al-Khafaji, Moamin I. Issa","doi":"10.1155/2023/8584875","DOIUrl":"https://doi.org/10.1155/2023/8584875","url":null,"abstract":"Dental clinicians and professionals need an affordable, nontoxic, and effective disinfectant against infectious microorganisms when dealing with the contaminated dental impressions. This study evaluated the efficiency of hypochlorous acid (HOCl) as an antimicrobial disinfectant by spraying technique for the alginate impression materials, compared with sodium hypochlorite, and its effect on dimensional stability and reproduction of details. HOCl with a concentration of 200 ppm for 5 and 10 min was compared with the control group (no treatment) as a negative control and with sodium hypochlorite (% 0.5) as a positive control. Candida albicans, Staphylococcus aureus, and Pseudomonas aeruginosa were selected to assess the antimicrobial activity with the colony forming unit test in addition to the dimensional stability and reproduction of details tests. The results revealed that HOCl had significant antimicrobial activity against all tested microorganisms and experimental time. Interestingly, HOCl showed no impact on the dimensional stability of alginate impression material. HOCl could be an effective antimicrobial agent for alginate impression material without interfering with their surface details and dimensional stability.","PeriodicalId":13947,"journal":{"name":"International Journal of Dentistry","volume":"5 6","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134956678","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Surface Roughness Evaluation of Resin Composites after Finishing and Polishing Using 3D-Profilometry","authors":"Alexandra Vinagre, Catarina Barros, Joana Gonçalves, Ana Messias, Filipe Oliveira, João Ramos","doi":"10.1155/2023/4078788","DOIUrl":"https://doi.org/10.1155/2023/4078788","url":null,"abstract":"The purpose of this study was to evaluate the effect of two finishing and polishing methods on the surface roughness of different resin composites. Twenty-two disk-shaped specimens of five resin composites Zirconfill® (ZF), Filtek™ Supreme XTE (FS), Brilliant EverGlow™ (BG), Ceram.X® Duo (CD), and Harmonize™ (HA) were prepared for each one using a silicon mold. Both surfaces of each specimen were first grinded with 600-grit silicon carbide paper in a moistened environment. The polishing methods used included the two-step Enhance® and PoGo® polishing system (E/P) or the four-step SwissFlex® discs (SFD). Surface roughness was evaluated using a noncontact 3D-optical profilometer. Surface morphology was examined by scanning electron microscopy. Data were analyzed using two-way analysis of variance and pairwise comparisons with Tukey’s test ( <math xmlns=\"http://www.w3.org/1998/Math/MathML\" id=\"M1\"> <mi>α</mi> <mo>=</mo> <mn>0.050</mn> </math> ). Surface roughness was affected by both the type of resin composite ( <math xmlns=\"http://www.w3.org/1998/Math/MathML\" id=\"M2\"> <mi>p</mi> <mo><</mo> <mn>0.001</mn> </math> ) and the finishing and polishing system ( <math xmlns=\"http://www.w3.org/1998/Math/MathML\" id=\"M3\"> <mi>p</mi> <mo><</mo> <mn>0.001</mn> </math> ), with a significant interaction between these two factors ( <math xmlns=\"http://www.w3.org/1998/Math/MathML\" id=\"M4\"> <mi>p</mi> <mo>=</mo> <mn>0.025</mn> </math> ). The E/P system produced smoother surfaces than the SFD system ( <math xmlns=\"http://www.w3.org/1998/Math/MathML\" id=\"M5\"> <mi>p</mi> <mo><</mo> <mn>0.001</mn> </math> ). For the E/P system, the highest mean roughness value was obtained with ZF and was statistically different from all other composites, whereas inhomogeneous results among resin composites could be found for the SFD system. Surface roughness was material-dependent, and the polishability of the resin composites was best accomplished using the E/P system. Within each F/P system studied, BG showed the lowest average surface roughness and ZF registered the highest.","PeriodicalId":13947,"journal":{"name":"International Journal of Dentistry","volume":"116 12","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134957468","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evaluation of the Effects of Different Types of Resin Cement Systems on the Push-Out Bond Strength of the Fiber Post to Intracanal Dentin in Anterior Primary Teeth","authors":"Ali Nozari, Boshra Rasoolzade, Zahra Jowkar, Seyed Ahmadreza Hamidi, Mohammad Jowkar","doi":"10.1155/2023/8645083","DOIUrl":"https://doi.org/10.1155/2023/8645083","url":null,"abstract":"Background. This study aimed to evaluate the effects of using three different resin cements on push-out bond strength (PBS) of fiber posts to root canal dentin of primary teeth. Methods. Fifty primary canines were randomly divided into five experimental groups according to the type of the luting agent used for fiber post cementation after endodontic treatment and post space preparation as the following: Group 1: glass ionomer cement (GIC), Group 2: flowable resin composite, Group 3: etch and rinse (E&amp;R) resin cement, Group 4: self-etch (SE) resin cement, Group 5: self-adhesive (SA) resin cement. The PBS values of the cemented fiber posts to root canals were measured. The data were statistically analyzed using a one-way analysis of variance, followed by Tukey’s post hoc test. Results. The highest mean PBS value was observed in Group 4 (SE resin cement), followed by Group 3 (E&amp;R resin cement), and the lowest PBS value belonged to Group 1 (GIC), followed by Group 5 (p-values < 0.05). The mean PBS of Group 3 (E&amp;R resin cement) was significantly higher than those of Groups 1 (GIC), 2 (flowable resin composite), and 5 (SA resin cement) (p-values < 0.05). However, no significant difference was found between the mean PBS of GIC and SA resin cement (p-value >0/05). Conclusion. Using SE resin cement for fiber post cementation in primary anterior teeth showed the best results, followed by E&amp;R resin cement. The lowest PBS was observed for GIC, followed by SA resin cement.","PeriodicalId":13947,"journal":{"name":"International Journal of Dentistry","volume":"55 19","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136282367","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evaluation of the Effect of Nanographene Oxide on Microleakage of Conventional and Resin-Modified Glass Ionomer","authors":"Farahnaz Sharafeddin, Parisa Ghodrati","doi":"10.1155/2023/8853495","DOIUrl":"https://doi.org/10.1155/2023/8853495","url":null,"abstract":"Objectives. One of the important features of the restorative materials is the ability to seal and prevent the microleakage. Glass ionomer cement (GIC) still exhibits some microleakage despite establishing a chemical bond to the tooth. The aim of this study was to evaluate the effect of nanographene oxide (nGO) on the microleakage of conventional (CGIC) and resin-modified glass ionomer cement (RMGIC). Methods. Thirty intact extracted molars were used. Class V cavities were prepared on their buccal and lingual surfaces. The samples randomly divided into two main groups of CGIC and RMGIC; each of them was randomly subdivided into three subgroups, including the group without nGO (control), the group with 1% nGO, and the group with 2% nGO. After restoring the cavities, they were subjected to thermocycling (1,000 cycles at 5/55°C). Two percent basic fuchsin solution was used to perform the microleakage test, and then the sectioned samples were examined by a stereomicroscope 40x. Kruskal–Wallis test, Dunn’s test, and Mann–Whitney U test were used to analyze the data ( <math xmlns=\"http://www.w3.org/1998/Math/MathML\" id=\"M1\"> <mi>P</mi> <mo><</mo> <mn>0.05</mn> </math> ). Results. Group CGIC + 1% nGO at the gingival margin and group RMGIC + 1% nGO at both gingival and occlusal margins had significantly less microleakage than their control groups ( <math xmlns=\"http://www.w3.org/1998/Math/MathML\" id=\"M2\"> <mi>P</mi> <mo>=</mo> <mn>0.008</mn> </math> , <math xmlns=\"http://www.w3.org/1998/Math/MathML\" id=\"M3\"> <mi>P</mi> <mo>=</mo> <mn>0.002</mn> </math> , <math xmlns=\"http://www.w3.org/1998/Math/MathML\" id=\"M4\"> <mi>P</mi> <mo>=</mo> <mn>0.023</mn> </math> , respectively). Also, in these two groups, there were no significant differences between the microleakage of the occlusal and gingival margins ( <math xmlns=\"http://www.w3.org/1998/Math/MathML\" id=\"M5\"> <mi>P</mi> <mo>=</mo> <mn>0.132</mn> </math> , <math xmlns=\"http://www.w3.org/1998/Math/MathML\" id=\"M6\"> <mi>P</mi> <mo>=</mo> <mn>0.511</mn> </math> , respectively), while in all other groups, the gingival microleakage was significantly higher than that of occlusal microleakage. Conclusions. The addition of 1% nGO significantly reduced the gingival microleakage of CGIC and the occlusal and the gingival microleakage of RMGIC, while the addition of 2% nGO did not cause a significant reduction in microleakage.","PeriodicalId":13947,"journal":{"name":"International Journal of Dentistry","volume":" 14","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135192702","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Frequency of Diplopia in Zygomatic Complex Fractures—A Cross-Sectional Descriptive Study","authors":"Maria Shabbir, Ruqaya Shah, Muhtada Ahmad, Rakhi Issrani, Zafar Khan, Salah Nazal Alotha, Basant Mousa Alsiyat, Mohammed Saad Alqarni, Ahmed Saleh Albalawi, Namdeo Prabhu, Mohammad Khursheed Alam, Zahid Qayyum","doi":"10.1155/2023/7631634","DOIUrl":"https://doi.org/10.1155/2023/7631634","url":null,"abstract":"Background. The zygomatic complex is the second most common fracture of the facial bones after the nasal bone. The prominent convex shape of the zygoma makes it vulnerable to traumatic injury. Diplopia is one of the serious complications of zygomatic complex fracture and is a common subjective complaint. Objective. To determine the frequency of diplopia in zygomatic complex fractures. Methodology. A cross-sectional descriptive study was conducted at the Oral and Maxillofacial Surgery Ward, Civil Hospital, Karachi, Pakistan. The duration of the study was 1 year (March 1, 2021 to February 28, 2022). A total of 126 patients having zygomatic complex fractures were included in this study. After recording the patient’s complete history, like demographic details and cause for fracture, diplopia was examined clinically. If, during the examination, the patient complained of double vision, this was labeled as diplopia positive (Yes) and negative (No) if the patient did not have any such complain. Data were statistically analyzed. Results. The mean (±SD) age of patients was 33.42 (±9.27), with 91 (72.2%) male patients and 35 (27.8%) female patients. The frequency of diplopia in zygomatic complex fractures was observed in 52 (41.3%) patients. The rate of diplopia was significantly high in patients aged between 31 and 40 years (P-value <math xmlns=\"http://www.w3.org/1998/Math/MathML\" id=\"M1\"> <mo>=</mo> <mn>0.0005</mn> </math> ). Conclusion. The frequency of diplopia among patients having zygomatic complex fractures was high in this study. Thus, forming a strategy to properly diagnose and treat it and to prevent persistent morbidity to improve patient’s quality of life is recommended.","PeriodicalId":13947,"journal":{"name":"International Journal of Dentistry","volume":" 45","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135341445","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"In Vitro Effect of Mouthrinses on the Microhardness of Three Different Nanohybrid Composite Resins","authors":"Jhonn Luis Bernaldo-Faustino, Julissa Amparo Dulanto-Vargas, Kilder Maynor Carranza-Samanez","doi":"10.1155/2023/9161639","DOIUrl":"https://doi.org/10.1155/2023/9161639","url":null,"abstract":"Introduction. Daily use of different mouthrinses at home or in the dental office can alter the properties of resin hardness. The present study aimed to compare Vickers microhardness (VHN) in vitro of nanohybrid composite resins (NCRs) immersed in mouthrinses. Materials and Methods. In total, 120 discs (10 ⨯ 2 mm) were prepared from three NCR shade A2 (n = 40/group) with FiltekTM Z350 XT (Z350XT), Tetric EvoCeram (TEC), and Polofil NHT (PNHT). The specimens were incubated in artificial saliva (37°C ⨯ 24 hr). Specimens were distributed into four mouthrinses (n = 10/group) of artificial saliva (control), chlorhexidine (CHX 0.12%, pH 5.6), cetylpyridine chloride (CPC 0.075%, pH 5.84), and CHX 0.12% + CPC 0.05% (pH 6.2) (2 times/day, 2’ ⨯ 12 hr). The VHN (300 gf/10”) was measured after 24 hr, 14, and 21 days. Data were analyzed by three-way analysis of variance, followed by post hoc Tukey analysis at 0.05 level of significance. Results. The results revealed a global effect of the interaction of the mouthrinses ⨯ time between NRC evaluated ( <math xmlns=\"http://www.w3.org/1998/Math/MathML\" id=\"M1\"> <mi>P</mi> <mo>=</mo> <mn>0.001</mn> </math> ). Baseline VHN in PNHT and Z350XT was higher than TEC. Within each group of NCR, VHN of CHX + CPC &gt; other mouthrinses (PNHT/14 days; Z350XT/21 days), and &gt;CPC (Z350XT/14 days). In mouthrinses-intragroups, VHN of PNHT and Z350XT decreased at 14 days (CHX, CPC) and was maintained over time in NCR (CHX + CPC). VHN-TEC was similar among groups. Conclusion. Microhardness showed differences due to the interaction of the type of NCR, the composition of the mouthrinses, and time. VHN decreased after 14 days and was more affected in composite resins with lower filler content and in mouthrinses with a lower pH.","PeriodicalId":13947,"journal":{"name":"International Journal of Dentistry","volume":"57 5","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135475247","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Introspection of the Etiopathological Mechanisms Underlying Noncarious Cervical Lesions: Analysis of the Different Theories and Their Impact on the Mineralized Structures of the Tooth.","authors":"Mario Dioguardi, Davide Polverari, Francesca Spirito, Giovanna Iacovelli, Diego Sovereto, Enrica Laneve, Giorgia Apollonia Caloro, Andrea Ballini, Lorenzo Lo Muzio","doi":"10.1155/2023/8838314","DOIUrl":"10.1155/2023/8838314","url":null,"abstract":"<p><p>The noncarious cervical lesions (NCCLs) recognize an etiological framework of onset very different from the carious processes with etiology whose bacteria aggregated in a biofilm play a predominant role, leading in this way to the loss of the mineralized structure of the tooth. The pathological picture of the NCCLs, which manifests itself with a clinical picture of dental wear, differs from caries because it mainly recognizes a series of pathological processes, such as erosion, through the action of generally acidic chemical agents and abrasion, which is basically expressed through repeated mechanical trauma characteristic of tooth brushing. However, in the literature, there is no unanimous agreement in identifying only these two mechanisms, but there are some who propose a more marked role of anomalous occlusal loads, which would be unloaded on some teeth which, in addition to both erosive and abrasive mechanisms, would give rise to abfraction. Therefore, the aim of this review was to collect literature etio-pathological information and discuss the mechanisms underlying NCCLs.</p>","PeriodicalId":13947,"journal":{"name":"International Journal of Dentistry","volume":"2023 ","pages":"8838314"},"PeriodicalIF":2.1,"publicationDate":"2023-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10643036/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"107591207","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 Sodium Ascorbate, Grape Seed Extract, and Aloe Vera Application after In-Office Bleaching on the Bond Strength of Enamel: A 3-Year Evaluation.","authors":"Alexandra Mena-Serrano, Eliana Aldás Fierro, Ximena Estrada, Alejandra Boada, Michel Wendlinger, Michael Willian Favoreto, Alessandro D Loguercio, Alessandra Reis","doi":"10.1155/2023/4625818","DOIUrl":"10.1155/2023/4625818","url":null,"abstract":"<p><strong>Introduction: </strong>Dental bleaching is the first choice to improve smile esthetics, but, in some cases, it needs to be associated with resin composite restoration to obtain a satisfactory result. Unfortunately, the bonding of resin-based materials can be impaired due to residual oxygen molecules, which can decrease the durability of the restoration.</p><p><strong>Objectives: </strong>To evaluate the effect of the antioxidant application on the bond strength of bleached enamel after 24 hr and 3 years of water storage.</p><p><strong>Methods: </strong>In total, 84 bovine teeth were used in this study. Of these, 77 were bleached with 35% hydrogen peroxide in a single session for three cycles of 15 min. Then, the specimens were divided into groups (<i>n</i> = 7 each): control (without bleaching), without antioxidant (WA) use; application of 10% sodium ascorbate (SA) gel, grape seed (GS) extract, and aloe vera (AV). The restorative procedure was performed immediately after bleaching, 7 and 14 days after bleaching. Specimens were sectioned and evaluated using microtensile bond strength (<i>μ</i>TBS). Half of the resin-enamel sticks were tested after 24 hr, and the remaining half after 3 years of water storage. <i>µ</i>TBS data were analyzed using a three-way analysis of variance, Tukey's test, and Dunnett's test.</p><p><strong>Results: </strong>The lowest <i>µ</i>TBS values were observed when the restoration was performed immediately after bleaching in the AV, GS, and WA groups when compared with the SA group (<i>p</i> < 0.005). However, no significant differences were observed among all groups after 3 years of water storage (<i>p</i> < 0.001).</p><p><strong>Conclusions: </strong>SA at 10% was the most effective antioxidant agent for improving the immediate bond strength. However, independent of the antioxidant agent used, the bond strength values were maintained or recovered after 3 years of water storage. SA at 10% could be used to avoid delayed bonding procedures after in-office whitening without compromising bond strength over time. <i>Clinical Significance</i>. The use of antioxidants after dental bleaching can be effective in improving the bonding durability of the adhesive restorations.</p>","PeriodicalId":13947,"journal":{"name":"International Journal of Dentistry","volume":"2023 ","pages":"4625818"},"PeriodicalIF":2.1,"publicationDate":"2023-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10640131/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89718165","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}