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Microleakage

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https://www.readbyqxmd.com/read/28989130/evaluation-of-the-sealing-capability-of-the-internal-conical-connections-of-implants-with-titanium-and-zirconia-abutments
#1
Damian L Black, Ilser Turkyilmaz, Wen Lien, Chol H Chong
AIM: The purpose of this in vitro investigation was to evaluate the sealing capability of the conical implant-abutment interfaces under different abutment screw torque values using titanium and zirconia abutments with Morse taper designs. MATERIALS AND METHODS: A total of 42 dental implants (n = 21 for titanium abutments and n = 21 for zirconia abutments) were inoculated internally with three bacteria. These assemblies were divided into four test groups (n = 10) based on screw fixation torques of 35 or 20 Ncm and placed in sterile broth; the remaining abutments were used as positive controls and torqued to 10 Ncm...
October 1, 2017: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/28989122/comparison-of-microleakage-of-class-v-cavities-restored-with-the-embrace-wetbond-class-v-composite-resin-and-conventional-opallis-composite-resin
#2
Maryam Tavangar, Zahra Zohri, Hosein Sheikhnezhad, Shahrzad Shahbeig
PURPOSE: This study was undertaken to compare the micro-leakage of class V cavities restored with the newly introduced Embrace WetBond class V (EWC) composite resin and conventional Opallis composite resin. MATERIALS AND METHODS: In this in vitro study, class V cavities were prepared on 30 extracted bovine incisors, with the gingival floor and the coronal margin of the cavities 1 mm apical and coronal to the cementoenamel junction (CEJ) respectively. The cavities measured 3 mm in length, 2 mm in width, and 1...
October 1, 2017: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/28969288/storage-medium-affects-the-surface-porosity-of-dental-cements
#3
M Ali Saghiri, Asal Shabani, Armen Asatourian, Nader Sheibani
INTRODUCTION: Calcium silicate-based cements physical properties is influenced by environmental changes. AIM: Here, we intended to evaluate the effect of storage medium on surface porosity of root Mineral Trioxide Aggregate (MTA) and Biodentine cement. MATERIALS AND METHODS: A total of 40 polyethylene tubes were selected and divided into two groups: Group A (MTA) and Group B (Biodentine). Each group was subdivided into two subgroups (n=10)...
August 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28957407/semiconductor-laser-irradiation-improves-root-canal-sealing-during-routine-root-canal-therapy
#4
Dandan Su, Xingxue Hu, Dashan Wang, Ting Cui, Ruyong Yao, Huibin Sun
OBJECTIVE: To evaluate the effect of semiconductor laser irradiation on root canal sealing after routine root canal therapy (RCT). METHODS: Sixty freshly extracted single-rooted human teeth were randomly divided into six groups (n = 10). The anatomic crowns were sectioned at the cementoenamel junction and the remaining roots were prepared endodontically with conventional RCT methods. Groups A and B were irradiated with semiconductor laser at 1W for 20 seconds; Groups C and D were ultrasonically rinsed for 60 seconds as positive control groups; Groups E and F without treatment of root canal prior to RCT as negative control groups...
2017: PloS One
https://www.readbyqxmd.com/read/28938028/association-between-implant-abutment-microgap-and-implant-circularity-to-bacterial-leakage-an-in-vitro-study-using-tapered-connection-implants
#5
Eduardo Cláudio Lopes de Chaves E Mello Dias, Marcelo Sperandio, Marcelo Henrique Napimoga
PURPOSE: The aim of this study was to evaluate the microgap between the abutment and implant as well as the circularity of implant platforms and associating conformational errors with bacterial microleakage in tapered connection implant systems. MATERIALS AND METHODS: Four brands of implants with a tapered abutment connection were tested. Bacterial leakage was assessed using 0.3 μL of Escherichia coli suspension inoculated into the abutment screw chamber of the implants, which were then torqued and incubated at 37°C for 14 days...
September 22, 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/28928782/comparison-of-microleakage-of-scotchbond%C3%A2-universal-adhesive-with-methacrylate-resin-in-class-v-restorations-by-two-methods-swept-source-optical-coherence-tomography-and-dye-penetration
#6
Hamid Kermanshah, Hossein Khorsandian
BACKGROUND: One of the most important factors in restoration failure is microleakage at the restoration interface. Furthermore, a new generation of bonding, Scotchbond Universal (multi-mode adhesive), has been introduced to facilitate the bonding steps. The aim of this study was to compare the microleakage of Class V cavities restored using Scotchbond™ Universal with Scotchbond Multi-Purpose in two procedures. MATERIALS AND METHODS: Eighteen freshly extracted human molars were used in this study...
July 2017: Dental Research Journal
https://www.readbyqxmd.com/read/28891540/the-effect-of-calcium-phosphate-containing-desensitizing-agent-on-the-microtensile-bond-strength-of-multimode-adhesive-agent
#7
S H Siso, N Dönmez, D S Kahya, Y S Uslu
OBJECTIVE: The aim of this study was to investigate the effect of calcium phosphate containing desensitizing pretreatments on the microtensile bond strength (MTBS) and microleakage of the multimode adhesive agent to dentin. MATERIALS AND METHODS: In this study, twelve noncarious, freshly extracted human third molar teeth for MTBS and 20 premolar teeth for the microleakage test were used. The teeth were restored using Clearfil Universal Bond + Clearfil APX and Teeth mate Desensitizer (TMD)...
August 2017: Nigerian Journal of Clinical Practice
https://www.readbyqxmd.com/read/28890612/comparative-evaluation-of-sealing-ability-water-absorption-and-solubility-of-three-temporary-restorative-materials-an-in-vitro-study
#8
A R Prabhakar, N Shantha Rani, Saraswathi V Naik
BACKGROUND: The quality of the coronal seal of root canal filling material is important for periapical health. Absorption of water or saliva by the temporary restorative materials leads to dimensional changes, loss of retention, staining and breaking in margin contours. Hence this study was carried out to evaluate and compare the sealing properties, water absorption and solubility of IRM (intermediate restorative material), Cavit G and GC Caviton. STUDY DESIGN: Experimental, in vitro intergroup randomized control trial...
April 2017: International Journal of Clinical Pediatric Dentistry
https://www.readbyqxmd.com/read/28890608/coronal-sealing-capacity-of-temporary-restorative-materials-in-pediatric-dentistry-a-comparative-study
#9
Shabnam Milani, Bahman Seraj, Alireza Heidari, Atousa Mirdamadi, Mahdi Shahrabi
AIMS: The aim of this in vitro study is to compare the coronal microleakage of three common temporary restorative materials, namely Coltosol, Compoglass, and Zonalin, used in pediatric dentistry after endodontic treatment at different time intervals (1 week, 1, and 2 months) using dye penetration. MATERIALS AND METHODS: Access cavities were prepared in 72 intact extracted premolar teeth. The samples were divided into three groups (n = 24) and filled with Coltosol, Compoglass, or Zonalin...
April 2017: International Journal of Clinical Pediatric Dentistry
https://www.readbyqxmd.com/read/28883605/effect-of-a-hyperbaric-environment-diving-conditions-on-adhesive-restorations-an-in-vitro-study
#10
C Mocquot, A Cabrera, P Colon, J Bosco, B Grosgogeat, N Pradelle-Plasse
Objectives No recent study has addressed the effect of diving conditions (pressure increase) on adhesive restorations. We evaluated the impact of a simulated hyperbaric environment on microleakage of the dentine-composite resin interface. The ultimate aim was to propose recommendations for restorative dentistry for patients who are divers to limit barodontalgia (dental pain caused by pressure variations of the environment) and may lead to dangerous sequelae.Methods We bonded 20 dentine disks by using an adhesive system (Scothbond Universal) to ten intact composite cylinders and ten composite cylinders with porosity (Ceram X mono)...
September 8, 2017: British Dental Journal
https://www.readbyqxmd.com/read/28872986/effect-of-qmix-and-other-irrigants-on-dentin-adhesives-in-pulp-chambers-of-primary-teeth-sem-study
#11
Sidharth Kapoor, Naveen Manuja, Seema Chaudhary, Harsimran Kaur, Chaitra Tr, Ashish Amit Sinha
OBJECTIVE: To compare the effect of different endodontic irrigants on microleakage of adhesives used within pulp chamber of primary molars. STUDY DESIGN: 72 Primary molars were divided into 6 groups, according to 3 irrigants and 2 adhesives used. After de-roofing the pulp chamber, pulp was extirpated. In 36 samples, pulp chambers were bonded with Xeno V(+) after irrigation with either QMix (Group1); 17%EDTA+5%NaOCl (Group2) or normal saline (Group3) and in other half samples, pulp chambers were bonded with SinglebondUniversal after irrigation with either QMix (Group 4); 17%EDTA+5% NaOCl (Group5) or normal saline (Group 6)...
2017: Journal of Clinical Pediatric Dentistry
https://www.readbyqxmd.com/read/28872730/volumetric-evaluation-of-void-gap-formation-and-microleakage-cementing-fiber-posts-on-extracted-teeth-with-three-different-cements
#12
İhsan Yikilgan, Ozgur Uzun, Mügem Gürel, Oya Bala, Hüma Ömürlü, Guven Kayaoglu
PURPOSE: To evaluate microleakage in roots restored with fiber posts cemented using three different luting cements, to measure the volume of voids/gaps within the obturated/postcemented root canals, and to examine whether microleakage and the volume of voids/gaps were correlated. MATERIALS AND METHODS: Thirty-six extracted human mandibular incisors were decoronated, and the root canals were obturated using gutta-percha and sealer in the experimental groups (n = 30)...
September 5, 2017: Journal of Prosthodontics: Official Journal of the American College of Prosthodontists
https://www.readbyqxmd.com/read/28855753/comparative-evaluation-of-apical-microleakage-in-immediate-and-delayed-postspace-preparation-using-four-different-root-canal-sealers-an-in-vitro-study
#13
Prabeesh Padmanabhan, Joydeep Das, R Veena Kumari, P R Pradeep, Ankur Kumar, Sneha Agarwal
BACKGROUND: Endodontically treated teeth often lack sufficient support for a permanent restoration. During post space preparation, it is important not to disturb the integrity of the apical seal. AIM: This study compared the effect of immediate versus delayed post space preparation on the apical seal using four different sealers. MATERIALS AND METHODS: One hundred and thirty single rooted teeth were biomechanically prepared and obturated with single cone gutta-percha and 4 sealers: Endoflas FS, AH Plus, Gutta flow and MTA...
March 2017: Journal of Conservative Dentistry: JCD
https://www.readbyqxmd.com/read/28845033/microleakage-and-penetration-depth-of-different-fissure-sealant-materials-after-cyclic-thermo-mechanic-and-brushing-simulation
#14
Hüseyin Hatirli, Bilal Yasa, Elif Yasa
The aim of the study was to evaluate microleakage and the penetration-depths of different fissure-sealant materials applied with/without enameloplasty after cyclic aging. One-hundred-sixty mandibular molars were divided into non-invasive and enameloplasty preparation groups and eight material subgroups, including: flowable composites (microhyrid, nanohybrid, and nanofilled), three resin-based (unfilled, filled, and highly-filled), a giomer-based, and a glass-ionomer-based fissure sealant. Specimens were subjected to two-year cyclic chewing and brushing simulation...
August 25, 2017: Dental Materials Journal
https://www.readbyqxmd.com/read/28808700/effect-of-chlorhexidine-and-ethanol-on-microleakage-of-composite-resin-restoration-to-dentine
#15
Iman Ramezanian Nik, Ehsan Baradaran Naseri, Sara Majidinia, Sara Ramezanian Nik, Mohammad Jafari Giv
OBJECTIVE: To evaluate the effect of chlorhexidine and ethanol on microleakage of composite resin restoration to dentine. METHODS: Class II cavities with dentinal margin were prepared on 96 premolar teeth. All specimens were acid-etched, rinsed and dried. Then the samples were randomly divided into four groups according to pre-treatment of the dentine: no treatment (control group); treatment with 100% ethanol for 60 s (group 2); treatment with 2% chlorhexidine for 60 s (group 3); 100% ethanol for 60 s and then 2% chlorhexidine for 60 s (group 4)...
2017: Chinese Journal of Dental Research
https://www.readbyqxmd.com/read/28808466/apical-microleakage-in-root-canals-containing-broken-rotary-instruments
#16
Mostafa Godiny, Reza Hatam, Atefeh Khavid, Shahryar Khanlari
INTRODUCTION: Broken instruments in root canals complicate routine endodontic treatment. This study aimed to compare apical microleakage in root canals containing broken rotary instruments filled with mineral trioxide aggregate (MTA), calcium-enriched mixture (CEM) cement, laterally compacted gutta-percha and injected gutta-percha. METHODS AND MATERIALS: In this in vitro, experimental study, 80 extracted human premolars were decoronated and then the roots were randomly divided into four groups (n=20)...
2017: Iranian Endodontic Journal
https://www.readbyqxmd.com/read/28808460/the-effect-of-intracanal-medicaments-on-microleakage-of-mineral-trioxide-aggregate-apical-plugs
#17
Mohammadreza Nabavizadeh, Fariborz Moazzami, Mohsen Bahmani, Hossein Mirhadi
INTRODUCTION: The purpose of this in vitro study was to evaluate the effect of calcium hydroxide, double and triple antibiotic paste on the sealing ability of mineral trioxide aggregate (MTA) apical plugs. METHODS AND MATERIALS: A total of 90 extracted teeth with single canals were prepared and randomly divided into four experimental groups (n=20). Intra-canal medicaments were applied for 3 weeks. MTA was placed through the access opening and condensed to the apical area and then fluid filtration technique was utilized to evaluate sealing ability after 1, 7, 14 and 30 days...
2017: Iranian Endodontic Journal
https://www.readbyqxmd.com/read/28808458/effect-of-propylene-glycol-on-the-sealing-ability-of-mineral-trioxide-aggregate-and-calcium-enriched-mixture-cement-apical-barriers
#18
Alireza Adl, Fereshte Sobhnamayan, Nooshin Sadat Shojaee, Fateme Tahmasebi Azad, Mohsen Bahmani
INTRODUCTION: Propylene glycol (PG) improves the handling, physical, and chemical properties of mineral trioxide aggregate (MTA). This study aimed to evaluate the effect of PG on the sealing ability of MTA and calcium-enriched mixture (CEM) apical barriers. METHODS AND MATERIALS: A total of 70 extracted human maxillary single-rooted teeth were prepared using ProTaper rotary system. The apical 3 mm of the root tips were resected and the root canals were enlarged with Peeso reamers up to #4, to create open apex teeth...
2017: Iranian Endodontic Journal
https://www.readbyqxmd.com/read/28806428/antibacterial-effect-of-provisional-cements-with-incorporated-polyethyleneimine-nanoparticles-an-in-vivo-study
#19
Inbal Ivgi, Ami Smidt, Nathan Zaltsman, Gilad Ben-Gal, Nurit Beyth
PURPOSE: Provisional restorations exhibit various degrees of microleakage when cemented. Incorporation of quaternized polyethyleneimine nanoparticles (QPEI) into provisional cements may be effective against bacteria in vivo. MATERIALS AND METHODS: Nine polymethylmethacrylate provisional restorations in human volunteers were evaluated after cementation with and without QPEI nanoparticles. Bacterial load in the provisional cement was assessed after 1 week of cementation...
August 14, 2017: International Journal of Prosthodontics
https://www.readbyqxmd.com/read/28791970/leakage-testing-for-different-adhesive-systems-and-composites-to-permanent-teeth
#20
B S Bolgul, B Ayna, I Simsek, S Celenk, O Seker, G Kilinc
AIM: To explore the microleakage of different adhesive systems and flowable composites to permanent teeth. SUBJECTS AND METHODS: In this study, a total of 84 human premolar teeth were used. Class V cavities were prepared on the buccal surfaces. The teeth were randomly assigned to six groups of 14 teeth each as follows: The first group - etch-rinse adhesive applied and cavities filled with flowable composite, the second group - etch-rinse adhesive applied and cavities filled with bulk-fill resin composite, the third group - one-stage self-etch (SE) adhesive applied and cavities filled with flowable composite, the fourth group - one-stage SE adhesive applied and cavities filled with bulk-fill resin composite, the fifth group - two-stage SE adhesive applied and cavities filled with flowable composite, and the sixth group - two-stage SE adhesive applied and cavities filled with bulk-fill resin composite...
July 2017: Nigerian Journal of Clinical Practice
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