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composite, microleakage

Eeraveni Ranadheer, Utsav D Shah, Kiran Kumar Neelakantappa, Shoba Fernandes
Context Various restorative materials are introduced in dentistry to achieve adequate strength and restore aesthetics. Dental amalgam is a versatile material with self-sealing property, but is unaesthetic. Other restorative materials like composites require conservative preparation, but exhibit polymerisation shrinkage resulting in microleakage. To overcome these drawbacks, a high strength restorative material reinforced with ceramic and zirconia fillers known as Zirconomer (Shofu Inc., Japan) has been introduced...
December 3, 2018: Curēus
Wen Zhou, Shiyu Liu, Xuedong Zhou, Matthias Hannig, Stefan Rupf, Jin Feng, Xian Peng, Lei Cheng
Dental caries is a common disease on a global scale. Resin composites are the most popular materials to restore caries by bonding to tooth tissues via adhesives. However, multiple factors, such as microleakage and recurrent caries, impair the durability of resinous restorations. Various innovative methods have been applied to develop adhesives with particular functions to tackle these problems, such as incorporating matrix metalloproteinase inhibitors, antibacterial or remineralizing agents into bonding systems, as well as improving the mechanical/chemical properties of adhesives, even combining these methods...
February 8, 2019: International Journal of Molecular Sciences
Rebecca Essi, Mathias Spraul, Kirstin Vach, Petra Hahn
OBJECTIVE: The objective of this study was to evaluate the influence of delayed light curing on a dual-cured composite resin on cuspal deflection, microleakage, and enamel cracks. METHOD AND MATERIALS: Forty-eight standardized Class 2 cavities were prepared in maxillary third molars and restored with a dual-cure composite resin (Core-X Flow) in bulk-fill technique. The samples were divided into four groups (n = 12) and either self-cured (1) or light cured immediately (2), with 1 minute (3) or 2 minutes of delay (4) after placement...
2019: Quintessence International
Saud Abdulaziz Almojaly, Rana Sulaiman Al-Hamdan, Ali Alrahlah, Osama A Qutub, Sulaiman Alnajashi, Fahim Vohra, Tariq Abduljabbar
BACKGROUND: To explore the surface modification of dentin using Er,Cr:YSGG phototherapy and bonding system on the shear bond strength and microleakage scores at two different distances and times of laser irradiation. MATERIALS AND METHODS: Ninety disease-free third molars were collected for the experiment. The four laser groups were divided on the basis of non-contact mode distance and time of irradiation: Group-I: Distance of 1 mm with duration of 60 s; Group-II: Distance of 1 mm with duration of 120 s; Group-III: Distance of 2 mm with duration of 60 s and; Group-IV: Distance of 2 mm with duration of 120 s...
October 26, 2018: Photodiagnosis and Photodynamic Therapy
Haytham Behery, Omar El-Mowafy, Wafa El-Badrawy, Sameh Nabih, Belal Saleh
BACKGROUND: Bulk-fill composites were developed to simplify composite placement and minimize polymerization shrinkage stresses, which can improve gingival marginal adaptation in deep class II cavities. OBJECTIVES: The objective of this study was to compare the gingival microleakage of class II cavities restored with bulk-fill composites to that of incrementally restored ones with a conventional composite at 2 storage periods. MATERIAL AND METHODS: Forty freshly extracted intact molars were employed...
October 2018: Dental and medical problems
Mohammad Q Al Rifaiy, Fahim Vohra
AIM: To assess the efficacy of phototherapy on bond strength and microleakage of bulk fill composites in comparison to conventional dentin surface treatments. MATERIALS AND METHODS: Ninety human third molars were divided into 3 groups (n = 30 each) according to surface conditioning treatment. Group 1 (Etch and Bond) EB, group 2 was treated with Er,Cr: YSGG (ECL) and group 3 was treated with a diode laser (DL). Based on the type of bulk fill resin composite, samples were divided into six sub-groups...
December 29, 2018: Photodiagnosis and Photodynamic Therapy
Burak Gumustas, Soner Sismanoglu
Objectives: The specific objective of this in vitro study was to determine whether the current flowable resin composites can establish an effective seal in repairing noncarious amalgam margin defects. Material and Methods: A total of 30 freshly extracted caries-free human third molars were used for this investigation. Class I preparations with a standardized 160-μ marginal defect were made by condensing amalgam against a Mylar strip. Accelerated aging and corrosion protocols were then applied to simulate oral conditions...
November 2018: Journal of Conservative Dentistry: JCD
Sonia Luque Peralta, André Lindemann Dutra, Sávio Bisinoto de Leles, Juliana Silva Ribeiro, Fabricio Aulo Ogliari, Evandro Piva, Rafael Guerra Lund
OBJECTIVES: This study investigated the physical and mechanical properties, antibacterial effect and biocompatibility of novel elastomeric temporary resin-based filling materials (TFMs) containing zinc methacrylate (ZM). MATERIAL AND METHODS: Experimental TFMs were prepared by mixing the zinc methacrylate with monomer, co-monomer, photoinitiator and fillers. A ZM concentration of 0 (control), 0.5% (Z0.5); 1% (Z1), 2% (Z2), or 5% (ZM5) wt% was added to the TFMs. Fermit-N (F) was used for comparison with the experimental material...
December 10, 2018: Journal of Applied Oral Science: Revista FOB
Hazim Mohamed Rizk, Mohammed Al-Ruthea, Mohammed Ali Habibullah
Objectives: The objective of our in vitro investigation was to assess the effect of a layer of three lining materials; flowable composite, flowable compomer, and light-curing glass ionomer cement as a liner on microleakage with Class V packable composite restorations in young premolar teeth. Materials and Methods: A total of 40 premolars were assigned randomly into four groups of 10 teeth each (Groups 1, 2, 3, and 4). Class V cavities (3 mm × 2 mm × 1.5 mm) were prepared in a standardized technique on the buccal surface of every tooth with the cervical margin extending 0...
November 2018: International Journal of Health Sciences
Nurul Aqilah Salim, Nor Aidaniza Abdul Muttlib, Rabihah Alawi, Normastura Abd Rahman, Zaihan Ariffin
Objective: This study aimed to compare the difference in marginal dye penetration between everStick, Parapost XP, Parapost fiber white and control groups under gradual loading. Materials and Methods: Sixty-eight human maxillary permanent incisors were divided into four groups. Each specimen was endodontically treated with step-back technique and prepared for each post system according to experimental groups, subsequently cemented in the canal. Composite resin cores were built and laboratory fabricated metal crowns were cemented...
September 2018: Acta Stomatologica Croatica
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
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
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
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
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
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
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
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
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
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
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