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A state-of-the-art review on interfacial behavior between asphalt binder and mineral aggregate 被引量:8
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作者 Meng GUO Yiqiu TAN +1 位作者 Linbing WANG Yue HOU 《Frontiers of Structural and Civil Engineering》 SCIE EI CSCD 2018年第2期248-259,共12页
The interface between asphalt binder and mineral aggregate directly affects the service life of pavement because the defects and stress concentration occur more easily there. The interaction between asphalt binder and... The interface between asphalt binder and mineral aggregate directly affects the service life of pavement because the defects and stress concentration occur more easily there. The interaction between asphalt binder and mineral aggregate is the main cause of forming the interface. This paper presents an extensive review on the test technologies and analysis methods of interfacial interaction, including molecular dynamics simulation, phase field approach, absorption tests, rheological methods and macro mechanical tests. All of the studies conducted on this topic clearly indicated that the interfacial interaction between asphalt binder and mineral aggregate is a physical-chemical process, and can be qualitatively characterized by microscopical technique (such as SEM and AFM), and also can be quantitatively evaluated by rheological methods and interfacial mechanical tests. Molecular dynamics simulation and phase field approach were also demonstrated to be effective methods to study the interfacial behavior and its mechanism. 展开更多
关键词 Asphalt binder mineral aggregate Interfacial behavior Multiscale
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Long-term observation of the mineral trioxide aggregate extrusion into the periapical lesion:a case series 被引量:5
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作者 Seok-Woo Chang Tae-Seok Oh +2 位作者 WooCheol Lee Gary Shun-Pan Cheung Hyeon-Cheol Kim 《International Journal of Oral Science》 SCIE CAS CSCD 2013年第1期54-57,共4页
One-step apexification using mineral trioxide aggregate(MTA) has been reported as an alternative treatment modality with more benefits than the use of long-term calcium hydroxide for teeth with open apex.However,ortho... One-step apexification using mineral trioxide aggregate(MTA) has been reported as an alternative treatment modality with more benefits than the use of long-term calcium hydroxide for teeth with open apex.However,orthograde placement of MTA is a challenging procedure in terms of length control.This case series describes the sequence of events following apical extrusion of MTA into the periapical area during a one-step apexification procedure for maxillary central incisor with an infected immature apex.Detailed long-term observation revealed complete resolution of the periapical radiolucent lesion around the extruded MTA.These cases revealed that direct contact with MTA had no negative effects on healing of the periapical tissues.However,intentional MTA overfilling into the periapical lesion is not to be recommended. 展开更多
关键词 EXTRUSION immature apex mineral trioxide aggregate one-step apexification open apex periapical healing
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Effect of acid etching on marginal adaptation of mineral trioxide aggregate to apical dentin:microcomputed tomography and scanning electron microscopy analysis 被引量:3
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作者 Khalid Al-Fouzan Ziad Al-Garawi +3 位作者 Khalid Al-Hezaimi Fawad Javed Thakib Al-Shalan Ilan Rotstein 《International Journal of Oral Science》 SCIE CAS CSCD 2012年第4期202-207,共6页
The present investigation assessed the effect of acid etching on marginal adaptation of white- and gray-colored mineral trioxide aggregate (MTA) to apical dentin using microcomputed tomography (micro-CT) and scann... The present investigation assessed the effect of acid etching on marginal adaptation of white- and gray-colored mineral trioxide aggregate (MTA) to apical dentin using microcomputed tomography (micro-CT) and scanning electron microscopy (SEM). Sixty-four extracted single-rooted human maxillary teeth were used. Following root-end resection and apical preparation, the teeth were equally divided into four groups according to the following root end filling materials: (i) white-colored MTA (WMTA), (ii) etched WMTA (EWMTA), (iii) gray-colored MTA (GMTA) and (iv) etched GMTA (EGMTA). After 48 h, the interface between root-end filling materials and the dentinal walls was assessed using micro-CT and SEM. Data were statistically analyzed using the KruskaI-Wallis and Dunn tests. Micro-CT analysis revealed gap volumes between the apical cavity dentin walls and EGMTA, GMTA, EWMTA and WMTA of (0.007 1±0.004) mm3, (0.053±0.002) mm3, (0.003 6±0.001) mm3 and (0.005 9±0.002) mm3 respectively. SEM analysis revealed gap sizes for EGMTA, WMTA, EWMTA and GMTA to be (492.3±13.8) μm, (594.5±17.12)μm, (543.1±15.33) μm and (910.7±26.2)μm respectively. A significant difference in gap size between root end preparations filled with GMTA and EGMTA was found (P〈O.05). No significance difference in gap size between WMTA and EWMTA were found in either SEM or micro-CT analysis. In conclusion, pre-etching of apical dentin can provide a better seal for GMTA but not for WMTA. 展开更多
关键词 acid etching BIOCOMPATIBILITY mineral trioxide aggregate root end filling
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Present status and future directions:Apexification
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作者 Sachin Chauhan Radha Chauhan +1 位作者 Prashant Bhasin Bhavna G Sharaf 《World Journal of Methodology》 2025年第1期26-32,共7页
The success rate of apexification is primarily determined by multiple factors,including the material used,the size of the open apex compared to the length of the root,and the technique used in each case.The main objec... The success rate of apexification is primarily determined by multiple factors,including the material used,the size of the open apex compared to the length of the root,and the technique used in each case.The main objective of this review was to provide an update on the present management of open apex to identify factors and circumstances that may influence the success of apexification using different materials and techniques.Future research on apexification should focus on how to treat open apices with wide periapical lesions without surgery.Previously,the predictability of these parameters with non-surgical procedures was uncertain,but now,with the use of a dental operating microscope,it has become more predictable.Another reason could be that extra visits are no longer required due to major advances in the armamentarium and materials used for apexification. 展开更多
关键词 BIOCERAMICS MAGNIFICATION Biodentine mineral trioxide aggregate APEXIFICATION Open apex
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Long-term follow-ups of revascularized immature necrotic teeth:three case reports 被引量:14
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作者 Duck-Su Kim Hae-Jin Park +5 位作者 Je-Ha Yeom Ji-Sung Seo Gil-Joo Ryu Ki-Ho Park Seung-Il Shin Sun-Young Kim 《International Journal of Oral Science》 SCIE CAS CSCD 2012年第2期109-113,共5页
Revascularization of immature necrotic teeth is a reliable treatment alternative to conventional apexogenesis or apexification. In case 1, a 12-year-old boy had his necrotic, immature mandibular left second premolar t... Revascularization of immature necrotic teeth is a reliable treatment alternative to conventional apexogenesis or apexification. In case 1, a 12-year-old boy had his necrotic, immature mandibular left second premolar treated with a revascularization technique. At a 24-month follow-up, periapical radiolucency had disappeared and thickening of the root wall was observed. In cases 2 and 3, a lO-year-old boy had his necrotic, immature, bilateral mandibular second premolars treated with the same modality. At 48-month (in case 2) and 42-month (in case 3) follow-ups, loss of periapical radiolucencies and increases in the root wall thickness were also observed. 展开更多
关键词 REVASCULARIZATION pulp necrosis mineral trioxide aggregate antibiotic mixture immature tooth
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An evaluation of the inflammatory response of lipopolysaccharide-treated primary dental pulp cells with regard to calcium silicate-based cements 被引量:4
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作者 Wei-Yun Lai Chia-Tze Kao +2 位作者 Chi-Jr Hung Tsui-Hsien Huang Ming-You Shie 《International Journal of Oral Science》 SCIE CAS CSCD 2014年第2期94-98,共5页
This study compared the biological changes of lipopolysaccharide (LPS)-treated dental pulp (DP) cells directly cultured on mineral trioxide aggregate (MTA) and calcium silicate (CS) cements. DP cells were trea... This study compared the biological changes of lipopolysaccharide (LPS)-treated dental pulp (DP) cells directly cultured on mineral trioxide aggregate (MTA) and calcium silicate (CS) cements. DP cells were treated with LPS for 24 h. Then, the LPS-treated DP cells were cultured on MTA or CS cements. Cell viability, cell death mechanism and interleukin (IL)-1β expressions were analysed. A one-way analysis of variance was used to evaluate the significance of the differences between the means. A significantly higher IL-1β expression (2.9-fold) was found for LPS-treated cells (P〈0.05) compared with DP cells without LPS treatment at 24 h. Absorbance values of LPS-treated cells cultured on CS cement were higher than a tissue culture plate. A significant difference (P〈0.05) in cell viability was observed between cells on CS and MTA cements 24 h after seeding. At 48 h, a high concentration of Si (5 mM) was released from MTA, which induced LPS-treated DP cell apoptosis. The present study demonstrates that CS cement is biocompatible with cultured LPS-treated DP cells. MTA stimulates inflammation in LPS-treated DP cells, which leads to greater IL-1β expression and apoptosis. 展开更多
关键词 calcium silicate cement dental pulp cell mineral trioxide aggregate immune response INTERLEUKIN-1Β
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Evaluation of the properties of Mineral Trioxide Aggregate mixed with Zinc Oxide exposed to different environmental conditions 被引量:1
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作者 B.Bolhari N.Meraji +1 位作者 M.Rezazadeh Sefideh P.Pedram 《Bioactive Materials》 SCIE 2020年第3期516-521,共6页
Addition of zinc oxide(ZnO)to Mineral Trioxide Aggregate(MTA)has been shown to rectify tooth discoloration caused by Angelus MTA.This study evaluated the microhardness,compressive strength,calcium ion release and crys... Addition of zinc oxide(ZnO)to Mineral Trioxide Aggregate(MTA)has been shown to rectify tooth discoloration caused by Angelus MTA.This study evaluated the microhardness,compressive strength,calcium ion release and crystalline structures of MTA mixed with ZnO in different environmental conditions.Molds with a diameter of 4 mm and a height of 6 mm were used for compressive strength,calcium ion release and X-ray diffraction(XRD)evaluations.Molds with 6 mm diameter and 4 mm height were used for surface microhardness evaluations.Cements evaluated include Angelus MTA(Angelus,Brail),Angelus MTA+ZnO,ProRoot MTA(Dentsply Tulsa Dental,OK),and ProRoot MTA+ZnO.Each group was divided into 3 subgroups according to exposure conditions:normal saline(NS),phosphate buffered saline(PBS)or blood.After 7 days incubation,surface microhardness,compressive strength and XRD analysis was performed.Calcium ion release was evaluated after 3,24 and 168h incubation using atomic absorption spectrophotometry.Data were analyzed by One Way Anova followed by the Tukey HSD Post hoc tests and T-Test.The significance level was set at 0.05.Addition of ZnO to Angelus and ProRoot MTA significantly decreased the compressive strength of these cements regardless of the environmental conditions(P<0.001);however,it had no significant effect on their microhardness or calcium ion release.In conclusion,adding ZnO to Angelus and ProRoot MTA can adversely affect the compressive strength of Angelus and ProRoot MTA. 展开更多
关键词 Compressive strength MICROHARDNESS mineral trioxide aggregate Zinc oxide
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The inflammatory response of the pulp after direct capping with platelet-rich plasma and enamel matrix derivative:A controlled animal study 被引量:1
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作者 Murat Maden Ekim Onur Orhan +1 位作者 Ihsan Furkan Ertugrul Burcu Sengüven 《Open Journal of Stomatology》 2014年第1期14-21,共8页
Aims: To evaluate the inflammatory response of the exposed pulp of incisor teeth in rats after direct pulp capping, using platelet rich plasma (PRP), enamel matrix derivate (EMD), mineral trioxide aggregate (MTA) and ... Aims: To evaluate the inflammatory response of the exposed pulp of incisor teeth in rats after direct pulp capping, using platelet rich plasma (PRP), enamel matrix derivate (EMD), mineral trioxide aggregate (MTA) and calcium hydroxide (Ca(OH)2). Methods: The study was conducted on 36 Wistar albino rats with a total of 144 incisor teeth. The pulps of 96 teeth of the rats were perforated and capped with different agents. Serving as the positive control group, the pulps of 24 teeth were only perforated and capped without capping agents, whereas the pulps of 24 teeth were used as the negative control group without being perforated (without any process). The research was ended with the extracting of the teeth on the 7th day-28th day. The teeth were taken to the routine and histological follows;cross sections were prepared and painted with hematoxylen & eosin. All of the sections were evaluated in terms of inflammatory reaction by histologic analysis taken by light microscope. Statistical analysis was used. The normal distribution of all data was tested with the Mann Whitney U and the differences between the groups were analyze dusing Kruskal Wallis test at 0.05 level. Results: There are no statistically significant differences in terms of inflammation type and necrosis among the treatment groups on 7 days’ post capping. However, improved inflammatory cell accumulation, hyperemia and lowest necrosis were observed from the samples treated with PRP (p < 0.05). Conversely, the EMD group indicated that the criteria of inflammation scores and hyper- emia were higher in the 28th day (p < 0.05). Conclusions: Most of cells accumulating in the PRP group and most necrosis were seen in the EMD group. These new PRP materials might serve as pulp capping biomaterials to induce initial healing response in the future. 展开更多
关键词 Enamel Matrix Derivate Platelet Rich Plasma mineral Trioxide aggregate Inflammatory Response Direct Pulp Capping
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Calcium Silicate Cements Application in Lateral Root Perforation Repair: A Case Report with 16-Month Follow-Up
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作者 Juan G. Robledo Pablo A. Rodríguez 《Open Journal of Stomatology》 2021年第8期317-324,共8页
Lateral root perforations are unfortunate procedures during endodontic treatment and often lead to tooth extraction. Conditioning factors such as time, size, location, inappropriate disinfection and sealing, are indis... Lateral root perforations are unfortunate procedures during endodontic treatment and often lead to tooth extraction. Conditioning factors such as time, size, location, inappropriate disinfection and sealing, are indispensable to achieve acceptable long-term outcomes. Calcium silicate cements are bioactive materials used for perforation repair. They can be set in moist environments such as blood, saliva and dentinal fluid making them a reliable material for clinical applications. This case report describes the treatment and repair after a 16-month follow-up of a lateral root perforation of the maxillary lateral incisor. 展开更多
关键词 ENDODONTICS Lateral Root Perforation Tri/Dicalcium Silicate Cements mineral Trioxide aggregate Bioactive Materials
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Utilization of inferior quality aggregates in asphalt mixes:A systematic review 被引量:1
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作者 Surya Narayanan Sakthivel Ankit Kathuria Bhupendra Singh 《Journal of Traffic and Transportation Engineering(English Edition)》 EI CSCD 2022年第5期864-879,共16页
Properties of aggregates are majorly influenced by parameters of source rocks viz.,formation process,chemical composition,impurities,volume of pores,and grain size.The study presents a review of aggregate treatment me... Properties of aggregates are majorly influenced by parameters of source rocks viz.,formation process,chemical composition,impurities,volume of pores,and grain size.The study presents a review of aggregate treatment methods and its efficacy to enhance the quality of aggregate.Various aspects of aggregate treatment methods like processing temperature,the dosage of additives,adaptability in the field is studied for three treatment methods viz.,polymer coating,cementitious coating,and chemical treatments.The paper also presents an insight to understand the effect of different treatment methods on mix properties and performance parameters of asphalt mixes.The review revealed that the shape properties of aggregates can be enhanced by the incorporating suitable crushing process(two-stage or three-stage).Whereas,physical and durability properties of aggregates can be improved by various treatment methods like polymer coating,Zycosoil treatment.It was further inferred from the review that treatment methods can have moderate effects on the mechanical properties of aggregates,since,it is mostly dependent on properties of source rocks. 展开更多
关键词 mineral aggregates Inferior quality aggregates Treatment methods Asphalt mixes Mix performance
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