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https://www.readbyqxmd.com/read/30411114/-effect-of-catalase-on-marginal-microleakage-of-resin-restoration-after-external-bleaching
#1
Yan-Yan Han, Tian Wu, Ya Zhu
PURPOSE: To investigate the effect of catalase on marginal microleakage of resin restoration after external tooth bleaching with 10% carbamide peroxide. METHODS: Forty extracted human premolars, both intact and health, were randomly divided into 4 groups: group 1, direct composite resin filling without bleaching; group 2, composite resin filling immediately after external bleaching; group 3, immersed in artificial saliva for 3 weeks after external bleaching ,then filling with composite resin; group 4 ,cavity treated with catalase after external bleaching and then filled with composite resin...
June 2018: Shanghai Kou Qiang Yi Xue, Shanghai Journal of Stomatology
https://www.readbyqxmd.com/read/30405733/evaluation-of-enamel-and-dentinal-microleakage-in-class-ii-silorane-based-and-methacrylate-based-resin-composite-restorations-using-specific-and-nonspecific-adhesives
#2
Sayed Mostafa Mousavinasab, Maede Ghasemi, Mitra Yadollahi
Objectives: The aim of this study was to evaluate enamel and dentinal microleakage in Class II cavities restored with silorane- and methacrylate-based resin composites using specific and nonspecific adhesives. Materials and Methods: Thirty-six caries-free human premolars were used. Two Class II cavities were prepared on each tooth. The gingival floor was set at 1 mm above (on the mesial surface) and at 1 mm below (on the distal surface) the cementoenamel junction (CEJ)...
July 2018: Journal of Dentistry of Tehran University of Medical Sciences
https://www.readbyqxmd.com/read/30405730/marginal-integrity-of-cervical-restorations-with-caries-affected-dentinal-walls-effect-of-contamination-with-hemostatic-agents
#3
Maryam Khoroush, Fatemeh Keshani, Mehdi Esmaeili, Moeen Hosseini Shirazi
Objectives: The aim of this study was to compare the microleakage in normal and caries-affected dentin (CAD) and to investigate the effect of three hemostatic agents on the microleakage of Class V composite resin restorations in CAD. Materials and Methods: Ninety-six Class V non-beveled cavities were prepared in 48 third molars at 1 mm below the cementoenamel junction (CEJ) in the cervical margin with the occlusogingival size of 2 mm, mesiodistal dimension of 3 mm, and a depth of 1...
July 2018: Journal of Dentistry of Tehran University of Medical Sciences
https://www.readbyqxmd.com/read/30405729/microleakage-of-an-enhanced-resin-modified-glass-ionomer-restorative-material-in-primary-molars
#4
Baharan Ranjbar Omidi, Fatemeh Ferdowsizadeh Naeini, Hajar Dehghan, Parvin Tamiz, Maryam Mohammadi Savadroodbari, Razieh Jabbarian
Objectives: Resin composites, glass ionomers (GIs), or a combination of these materials have gradually replaced silver amalgam in pediatric dentistry. The purpose of this study was to compare the microleakage of Class II (box only) cavity restorations with ACTIVA Bioactive Restorative Glass, resin-modified GI (RMGI), and composite in primary molars. Materials and Methods: A total of 65 primary molars with at least one intact proximal surface were selected in this in-vitro study...
July 2018: Journal of Dentistry of Tehran University of Medical Sciences
https://www.readbyqxmd.com/read/30363354/comparison-of-microleakage-between-bulk-fill-flowable-and-nanofilled-resin-based-composites
#5
Eman I AlSagob, David N Bardwell, Ala O Ali, Samer G Khayat, Paul C Stark
Aim: The objective was to compare the marginal leakage (silver nitrate uptake) of nanohybrid resin-based composite (RBC) and two bulk-fill flowable RBCs with specific clinical protocols. Methods: Four experimental groups of RBC were investigated including conventional composite Filtek™ Supreme in 2 mm increment (FS2), Filtek™ Supreme in 4 mm increment (FS4), Filtek™ Supreme Flowable (BFF), and SureFil® SDR® flow (SDR). Class II box preparation (4 × 4 × 3 mm) in extracted intact human molars was carried out and restored using the experimental groups, all according to the manufacturers' recommendations except FS4...
June 2018: Interventional Medicine & Applied Science
https://www.readbyqxmd.com/read/30328303/evaluating-the-microleakage-between-dentin-and-composite-materials
#6
Alper Özdoğan, Musa Şamil Akyıl, Zeynep Yeşil Duymuş
BACKGROUND: For successful restoration, it is necessary to minimize the microleakage between dentin and the composite material. OBJECTIVES: The purpose of this study was to evaluate the microleakage of 2 different resin cements (self-adhesive and conventional) on dentin treated with acid, sodium hypochlorite (NaOCl), the acid-NaOCl mixture, the erbium-doped yttrium aluminum garnet (Er:YAG) laser, and their combination. MATERIAL AND METHODS: Seventy dentin specimens were divided into 7 groups (n = 10) according to the surface treatment...
July 2018: Dental and medical problems
https://www.readbyqxmd.com/read/30305877/comparison-of-three-adhesive-systems-in-class-ii-composite-restorations-in-endodontically-treated-teeth-influence-of-er-yag-laser-conditioning-and-gingival-margin-levels-on-microleakage
#7
Emel-Olga Onay, Kivanc Yamanel, Yonca Korkmaz-Ceyhan, Kamran Gulsahi
Background: Dental surface conditioning by Er:YAG laser is currently being investigated, as not all of the mechanisms and effects of this technique have been clearly studied. Thus, the aim of the present study was to assess the cervical microleakage of Class II resin composite restorations in endodontically treated teeth following either the respective conventional conditioning or additional Er:YAG laser conditioning, in association with varied adhesives. Material and Methods: Standardized mesial-occlusal-distal cavities (two gingival walls positioned in dentin and enamel, respectively) were created in 60 extracted human premolar teeth...
August 2018: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/30294156/effect-of-preetching-on-microleakage-with-all-in-one-adhesives-using-calcium-based-desensitizers-an-in-vitro-study
#8
N Tulasi Priya, Harikumar Vemisetty, Keerthi Sudireddy, Jayaprada Reddy Surakanti, Amulya Vanapatla, Anil Kumar Maradi
Objectives: The aim of this study was to evaluate the effect of calcium-based desensitizers on the microleakage with and without preetching enamel in Class V cavities restored with all-in-one adhesives. Materials and Methods: Class V cavities were prepared on the buccal surfaces of 100 extracted human premolars. A total of 100 box-shaped cavities were divided into five groups ( n = 20). Group 1 - no desensitizer was applied and Groups 2 and 4 - desensitizer (CCP-ACP and Novamin) was applied, respectively, followed by the application of G-Bond and restored with composite restoration...
September 2018: Contemporary Clinical Dentistry
https://www.readbyqxmd.com/read/30287711/in-vitro-evaluation-and-comparison-of-microleakage-of-two-restorative-composite-resins-in-class-ii-situations-using-confocal-laser-scanning-microscopy
#9
Bibhu D Nanda, Pallavi Sharma, Munmun Moudgil, Vikas Sharma, Ajay K Gupta, Dhruv Gupta
AIM: The placement of composite in teeth is not an easy task and it poses many challenges. Microleakage is one of the factors that affects the success of any composite restoration. It influences the longevity of dental restorations. The present study was aimed to evaluate and compare microleakage of two restorative composites resins in class II cavities using confocal laser scanning microscopy (CLSM). MATERIALS AND METHODS: This was an in vitro study, which included 20 permanent mandibular first molar...
September 1, 2018: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/30287708/comparative-evaluation-of-shear-bond-strength-and-microleakage-of-two-self-adhering-composite-resins-an-in-vitro-study
#10
Priyanka C Panchal, Karthik Venkataraghavan, Chirag R Panchal
INTRODUCTION: A good dental cement used as repair material should possess chemical binding, easy handling characteristics, minimal marginal breakdown and minimal polymerization shrinkage, high resistance to wear, high cohesive strength, and good color stability. This study was undertaken to compare the in vitro microleakage and shear bond strength among the newly introduced Prime fill flow and Dyad flow. AIM: The aim of this study was to determine the effect on shear bond strength and microleakage of two self-adhesive composite resin...
September 1, 2018: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/30199889/impact-of-various-pressures-on-fracture-resistance-and-microleakage-of-amalgam-and-composite-restorations
#11
Elnaz Shafigh, Reza Fekrazad, Amir Reza Beglou
BACKGROUND: Pressure changes can influence dental restorations especially among divers. The aim of the current study was to evaluate the fracture resistance and microleakage of mesio-occluso-distal (MOD) amalgam and composite restorations undergoing pressure changes via diving and aviation simulation. METHODS: For the fracture resistance test, 60 sound maxillary premolar teeth were randomly allocated to two groups. Each group was then divided into three subgroups (n = 10) for simulating scuba-diving (pressure cycle to 203 kPa, 2 bar), flight (50...
September 30, 2018: Diving and Hyperbaric Medicine: the Journal of the South Pacific Underwater Medicine Society
https://www.readbyqxmd.com/read/30188252/comparison-of-er-cr-ysgg-laser-handpieces-for-class-ii-preparation-and-microleakage-of-silorane-or-methacrylate-based-composite-restorations
#12
Esra Ergin, Fatma Dilsad Oz, Sevil Gurgan
OBJECTIVE: The aim of this study was to evaluate the influence of cavity preparation with different Er,Cr:YSGG laser handpieces on microleakage of different posterior composite restorations. METHODS: Fifty-four extracted intact human premolars were randomly assigned to three groups according to cavity preparation method: Bur Group: high-speed diamond bur (Diatech), MD Group: Er,Cr:YSGG laser Waterlase MD handpiece (Biolase Millennium II), and Turbo Group: Er,Cr:YSGG laser Waterlase MD TURBO handpiece (Biolase Millennium II)...
September 2018: Photomedicine and Laser Surgery
https://www.readbyqxmd.com/read/30166827/evaluation-of-microleakage-under-orthodontic-brackets-bonded-with-nanocomposites
#13
Zohreh Hedayati, Amin Farjood
Background: The aim of this study was to evaluate the microleakage value under orthodontic brackets bonded with a nano-filled composite and to compare the results with a conventional adhesive using two different bonding systems. Materials and Methods: Forty human premolars were used in this cross-sectional study. The samples were randomly divided into four equal groups of ten: Group I: Acid etch plus Transbond XT primer and Transbond XT adhesive, Group II: Acid etch plus Transbond XT primer and nanocomposite (Filtek Z350), Group III: Scotchbond™ Universal primer plus Transbond XT, and Group IV: Scotchbond™ and nanocomposite...
July 2018: Contemporary Clinical Dentistry
https://www.readbyqxmd.com/read/30147401/micro-computed-tomography-evaluation-of-microleakage-of-class-ii-composite-restorations-an-in-vitro-study
#14
Angelo Zavattini, Manuele Mancini, James Higginson, Federico Foschi, Guido Pasquantonio, Francesco Mangani
Objective: The aim of this study is to investigate the microleakage attained with three resin-based material used to restore deep Class II cavities. A null hypothesis was chosen: there is no difference in microleakage among the tested materials. Materials and Methods: A total of 30 Class II cavities were prepared in freshly extracted molars with the proximal mesial and distal margins located, respectively, 1.5 mm apically and 1.5 mm coronally to the cementum-enamel junction...
July 2018: European Journal of Dentistry
https://www.readbyqxmd.com/read/30142038/influence-of-shrinkage-and-viscosity-of-flowable-composite-liners-on-cervical-microleakage-of-class-ii-restorations-a-micro-ct-analysis
#15
J Nie, A U Yap, X Y Wang
This study determined the influence of shrinkage and viscosity of flowable composite liners on the cervical microleakage of Class II restorations using micro-CT. Seven composites of varying viscosities were selected and included five giomers (Shofu Beautifil II [BF], Flow Plus F00 and F03 [F00 and F03], Flow F02 and F10 [F02 and F10]) and 2 nano-filled composites (3M-ESPE Filtek Z350 [Z350] and Filtek Z350 Flowable [Z350F]). Polymerization shrinkage (n=7) was assessed with the Acuvol volumetric shrinkage analyzer while complex viscosity was determined with the advanced rheometric expansion system at 25°C...
August 24, 2018: Operative Dentistry
https://www.readbyqxmd.com/read/30122814/evaluation-of-marginal-sealing-ability-of-self-adhesive-flowable-composite-resin-in-class-ii-composite-restoration-an-in-vitro-study
#16
Preeti Mishra, Shikha Jaiswal, Vineeta Nikhil, Sachin Gupta, Padmanabh Jha, Shalya Raj
Aim: The aim of this study is to evaluate the marginal sealing ability of self-adhesive flowable composite resin when used as a liner in Class II composite restoration with and without aging. Materials and Methods: A total of 120 standardized Class II tooth preparations with gingival margins 1 mm coronal and apical to cementenamel junction (CEJ) were prepared on 60 extracted permanent mandibular molars and were randomly divided into eight equal Groups: Group 1: cavities coronal to CEJ and restored with Dyad flow liner + Herculite ultra, Group 2: same as Group 1 but cavities margins apical to CEJ, Group 5: cavities coronal to CEJ and restored with only Herculite ultra, and Group 6: same as Group 5 but cavities apical to CEJ...
July 2018: Journal of Conservative Dentistry: JCD
https://www.readbyqxmd.com/read/30106395/effect-of-different-cavity-lining-techniques-on-marginal-sealing-of-class-ii-resin-composite-restorations-in-vitro
#17
Parham Pedram, Tabassom Hooshmand, Soolmaz Heidari
This study investigated the effect of different cavity lining techniques on the marginal sealing of Class II composite restorations. A total of 36 human molar teeth, free of caries and fillings, were each prepared with two proximal Class II boxes mesially and distally. In mesial boxes, cavity liners were applied as follows: in group 1, separately cured flowable composite; in group 2, co-cured flowable composite; and in group 3, resin-modified glass ionomer (RMGI). The remaining cavities were filled incrementally with a universal restorative composite...
November 2018: International Journal of Periodontics & Restorative Dentistry
https://www.readbyqxmd.com/read/30077649/influence-of-er-cr-ysgg-laser-on-adhesive-strength-and-microleakage-of-dentin-bonded-to-resin-composite-in-vitro-study
#18
Fahim Vohra, Abdullah Alghamdi, Mohammed Aldakkan, Sultan Alharthi, Osama Alturaigi, Mohammed Alrabiah, Khulud Abdulrahman Al-Aali, Ali Alrahlah, Mustafa Naseem, Tariq Abduljabbar
BACKGROUND: The aim of this study was to evaluate the surface treatment of dentin with phototherapy (ER-CR-YSGG laser) in the presence of different bonding systems on their shear bond strength and microleakage. MATERIALS AND METHODS: Eighty intact human third molars were divided into two groups. Forty teeth were treated with conventional flat wheel diamond bur and the remaining forty were treated with Er Cr YSGG laser (phototherapy). The two groups i.e. treated with laser (l) and group treated with abrasive bur (NL) were further divided into two subgroups of twenty samples each...
August 2, 2018: Photodiagnosis and Photodynamic Therapy
https://www.readbyqxmd.com/read/30074007/microleakage-of-glass-ionomer-based-restorative-materials-in-primary-teeth-an-in-vitro-study
#19
RANDOMIZED CONTROLLED TRIAL
B Ayna, S Celenk, O Atas, E C Tümen, E Uysal, I R Toptanci
Aim: Using AutoCAD, we examined the microleakage of dye at the edges of primary-teeth restorations using three glass ionomer-based restorative materials. Materials and Methods: A total of 30 extracted noncarious primary molars were used. Class V cavities were adjusted on the buccal surfaces. The teeth were randomly divided into three groups of 10 teeth each as follows: Group A (Ketac Molar), Group B (Photac Fil), and Group C (Dyract XP). All specimens were stored for 24 h at 37°C in distilled water...
August 2018: Nigerian Journal of Clinical Practice
https://www.readbyqxmd.com/read/30034008/evaluation-of-microleakage-in-zirconomer%C3%A2-a-zirconia-reinforced-glass-ionomer-cement
#20
Rawan Albeshti, Saroash Shahid
Objective: To evaluate the microleakage of four direct restorative materials. Materials and Methods: Sixteen sound bovine incisors were chosen and randomly divided into four groups; Group I-Zirconomer, Group II-KetacTM Silver, Group III-FiltekTM Z500 (composite) and Group IV-Dispersalloy ® (amalgam). Seven proximal (mesial & distal) cavities, for each material were prepared and restored. All restored samples were stored in 37o C distilled water for 24 hr and then subjected to thermo-cycling process at temperatures between 5-55o C...
June 2018: Acta Stomatologica Croatica
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