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https://www.readbyqxmd.com/read/28917087/evaluation-of-four-different-restorative-materials-for-restoration-of-the-periodontal-condition-of-wedge-shaped-defect-a-comparative-study
#1
Jian-Yong Ruan, Zheng-Lin Gong, Rui-Zhi Zhang, Zhe Zhang, Ran Xu, Da-Xu Li, Le Ren, Hong Tao
BACKGROUND This study aimed to conduct a clinical evaluation of four restorative materials for restoration of dental wedge-shaped defect (WSD) and their impacts on periodontal tissues. MATERIAL AND METHODS A total of 280 maxillary premolars with dental WSD were selected from 106 patients; the patient cases were divided into eight groups according to different combinations of restorative materials (flowable resin composites, Dyract compomers, glass ionomer cement (GIC), light-curing composite resin), and WSD positions (approaching gingival and subgingival positions)...
September 16, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28914251/clinical-and-radiographic-comparison-of-platelet-rich-fibrin-and-mineral-trioxide-aggregate-as-pulpotomy-agents-in-primary-molars
#2
Surendra Patidar, Namita Kalra, Amit Khatri, Rishi Tyagi
AIM: This study aimed to evaluate and compare the Platelet-rich fibrin (PRF) and Mineral trioxide aggregate (MTA) as a pulpotomy agent in primary molars. MATERIAL AND METHODS: In this study, 50 primary molars from 50 healthy children aged 5-9 years requiring pulpotomy were randomly allocated into two groups. In PRF group, after coronal pulp removal and hemostasis, remaining pulp tissue was covered with PRF preparation. In the MTA group, the pulp stumps were covered with MTA (Pro Root MTA-Root Canal Repair Material, Dentsply International Inc...
October 2017: Journal of the Indian Society of Pedodontics and Preventive Dentistry
https://www.readbyqxmd.com/read/28891873/hearing-outcome-with-the-use-of-glass-ionomer-cement-as-an-alternative-to-crimping-in-stapedotomy
#3
Saad Elzayat, Ahmed Younes, Ayman Fouad, Fatthe Erfan, Ali Mahrous
OBJECTIVE: To evaluate early hearing outcomes using glass ionomer cement to fix the Teflon piston prosthesis onto the long process of incus to minimize residual conductive hearing loss after stapedotomy. STUDY DESIGN: Original report of prospective randomized control study. SETTING: Tertiary referral center. PATIENTS: A total of 80 consecutive patients with otosclerosis were randomized into two groups. Group A is a control group in which 40 patients underwent small fenestra stapedotomy using the classic technique...
October 2017: Otology & Neurotology
https://www.readbyqxmd.com/read/28876472/economic-evaluation-of-dental-sealants-a-systematic-literature-review
#4
Marvellous Akinlotan, Bradley Chen, Tiana M Fontanilla, Annie Chen, Victoria Y Fan
OBJECTIVES: To systematically review the literature on economic evaluations of dental sealants and examine the costs and effectiveness of caries prevention using sealants. METHODS: Of 21 full-text articles examined, a total of 13 were included in this study. These studies are grouped by the type of intervention as follows: (i) sealants compared with no sealants; (ii) sealants compared with other forms of caries prevention; (iii) resin-based sealants compared with glass-ionomer sealants; (iv) different sealing strategies in primary teeth; (v) different sealing strategies in permanent teeth; and (vi) sealants based on school- or clinic-based setting of delivery...
September 6, 2017: Community Dentistry and Oral Epidemiology
https://www.readbyqxmd.com/read/28872994/comparison-of-cytotoxicity-of-new-nanohybrid-composite-giomer-glass-ionomer-and-silver-reinforced-glass-ionomer-using-human-gingival-fibroblast-cell-line
#5
Fatemeh Koohpeima, Mohammad Javad Mokhtari, Maryam Doozandeh, Zahra Jowkar, Fatemeh Yazdanshenas
AIM: The objective of this study was to investigate the cytotoxic effects of new nanohybrid composite, giomer, conventional and resin modified and silver reinforced glass ionomer cements and compare the biocompatibility of these dental materials in cell culture. STUDY DESIGN: Five cylindrical specimens were made of each material, using a mold (2mm. thick and 5 mm in diameter). For HGF, cells were cultured in RPMI-1640 medium. After attaining 80% confluence, cells were treated with different doses of five tested materials for 24h...
2017: Journal of Clinical Pediatric Dentistry
https://www.readbyqxmd.com/read/28872726/bond-strength-of-resin-cement-and-glass-ionomer-to-nd-yag-laser-treated-zirconia-ceramics
#6
Nafiseh Asadzadeh, Foojan Ghorbanian, Farzaneh Ahrary, Hamidreza Rajati Haghi, Reza Karamad, Amir Yari, Abdollah Javan
PURPOSE: To investigate the effect of neodymium-doped yttrium aluminum garnet (Nd:YAG) laser irradiation on the surface properties and bond strength of zirconia ceramics. MATERIALS AND METHODS: Forty-eight zirconia ceramic pieces (4 × 4 × 1 mm(3) ) were divided into four groups according to surface treatment as follows: two control groups (no treatment) for resin bonding (CRC) and glass ionomer (GI) bonding (CGC); two laser treatment groups (Nd:YAG irradiation, 3 W, 200 MJ, 10 Hz, 180 μs) for resin bonding (LRC) and GI bonding (LGC)...
September 5, 2017: Journal of Prosthodontics: Official Journal of the American College of Prosthodontists
https://www.readbyqxmd.com/read/28865819/does-evidence-support-a-combined-restorative-surgical-approach-for-the%C3%A2-treatment-of-gingival-recessions-associated-with-noncarious-cervical%C3%A2-lesions
#7
REVIEW
Kevimy Agossa, Guillaume Godel, Marie Dubar, Kadiatou S Y, Pascal Behin, Elisabeth Delcourt-Debruyne
OBJECTIVES: Gingival recessions are frequently associated with noncarious cervical lesions. Combined restorative surgical approaches have been suggested for the management of these combined defects. The aim of this review was to analyze the current evidence on the effectiveness of these combined restorative surgical approaches. METHODS: A systematic review of randomized controlled studies published from January 2006 to June 2016 was performed. RESULTS: Ten articles comparing combined restorative surgical approaches to surgery alone were included...
September 2017: Journal of Evidence-based Dental Practice
https://www.readbyqxmd.com/read/28863911/quantitative-analysis-of-enamel-on-debonded-orthodontic-brackets
#8
Nathan J Cochrane, Thomas W G Lo, Geoffrey G Adams, Paul M Schneider
INTRODUCTION: Iatrogenic damage to the tooth surface in the form of enamel tearouts can occur during removal of fixed orthodontic appliances. The aim of this study was to assess debonded metal and ceramic brackets attached with a variety of bonding materials to determine how frequently this type of damage occurs. METHODS: Eighty-one patients close to finishing fixed orthodontic treatment were recruited. They had metal brackets bonded with composite resin and a 2-step etch-and-bond technique or ceramic brackets bonded with composite resin and a 2-step etch-and- bond technique, and composite resin with a self-etching primer or resin-modified glass ionomer cement...
September 2017: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/28857710/microtensile-bond-strength-of-resin-modified-glass-ionomer-cement-to-sound-and-artificial-caries-affected-root-dentin-with-different-conditioning
#9
A Saad, G Inoue, T Nikaido, M Ikeda, M F Burrow, J Tagami
In this laboratory study, the microtensile bond strengths (μTBS) of resin-modified glass ionomer cement (RM-GIC) to sound and artificial caries-affected bovine root dentin (ACAD) using three different conditioning agents were evaluated after 24 hours and three months. The fractured interface was examined with a scanning electron microscope (SEM). Specimens were created on bovine root dentin that was embedded in epoxy resin. For the ACAD specimens, artificial carious lesions were created. The RM-GIC (Fuji II LC) was applied either directly (no treatment), after application of self conditioner, cavity conditioner, or 17% ethylenediamine tetraacetic acid (EDTA) applied for 60 seconds, on sound dentin and ACAD, then light cured...
August 31, 2017: Operative Dentistry
https://www.readbyqxmd.com/read/28853124/effect-of-smokeless-tobacco-on-surface-roughness-of-dental-restorations
#10
Shani O Thompson, Gerald D Griffin, Nicole Meyer, Manuel Pelaez
CLINICAL RELEVANCE: Surface alterations of dental restorations can result in increased plaque biofilm. This leads to increased risk of premature restoration failure. Smokeless tobacco, in common use by some US military personnel, represents a potential source for surface alteration. If smokeless tobacco causes an untoward effect, selection of a more resistant restorative material could increase restoration longevity, thus minimizing lost work time and costs associated with replacement of failed restorations...
July 2017: U.S. Army Medical Department Journal
https://www.readbyqxmd.com/read/28845035/comparative-fracture-behavior-of-monolithic-and-veneered-zirconia-posterior-fixed-dental-prostheses
#11
Carlos Lopez-Suarez, Veronica Rodriguez, Jesus Pelaez, Ruben Agustin-Panadero, Maria J Suarez
The purpose of this study was to evaluate and to compare the fracture load and the fracture pattern of monolithic and veneered zirconia posterior fixed dental prostheses (FDPs). Twenty standardized steel dies were prepared to receive posterior 3-unit FDPs. Specimens were randomly divided into 2 groups (n=10): (1) Lava Zirconia, and (2) Lava Plus. All FDPs were cemented using glass ionomer cement and subjected to thermal and mechanical cycling at 5-55ºC with a 30-s dwell time for 120,000 masticatory cycles...
August 25, 2017: Dental Materials Journal
https://www.readbyqxmd.com/read/28845033/microleakage-and-penetration-depth-of-different-fissure-sealant-materials-after-cyclic-thermo-mechanic-and-brushing-simulation
#12
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/28829938/fluoride-ion-release-of-self-adhesive-resin-cements-and-their-potential-to-inhibit-in-situ-enamel-and-dentin-demineralization
#13
V A Pellizzari, A C Michels, S T Luiz, E M de Souza, Cpm Tabchoury, R N Rached
OBJECTIVE: This study evaluated in situ the potential of a glass ionomer and self-adhesive resin cements to inhibit enamel and dentin demineralization around indirect restorations exposed to cariogenic challenge. The cumulative fluoride release (CFR) of materials was measured in water and acid. METHODS: Seventy blocks cut from human molars received two indirect composite restorations (one in enamel and another in dentin) luted with Ketac Cem EasyMix (GIC, positive control), SeT (SeT), Maxcem Elite (Max), Smart Cem2 (Smart), and RelyX Unicem 2 (Unicem2)...
September 2017: Operative Dentistry
https://www.readbyqxmd.com/read/28828160/comparison-of-the-effect-of-different-surface-treatments-on-the-bond-strength-of-different-cements-with-nickel-chromium-metal-alloy-an-in-vitro-study
#14
Saumya Kapoor, Nayana Prabhu, Dhanasekar Balakrishnan
BACKGROUND: For success of any indirect metal restoration, a strong bond between cement and the intaglio surface of metal is imperative. The aim of this study is to evaluate and compare the effect of different surface treatment on the tensile and shear bond strength of different cements with nickel-chromium alloy. MATERIAL AND METHODS: 120 premolars were sectioned horizontally parallel to the occlusal surface to expose the dentin. Wax patterns were fabricated for individual tooth followed by casting them in nickel chromium alloy...
July 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/28828147/effect-of-various-dentin-disinfection-protocols-on-the-bond-strength-of-resin-modified-glass-ionomer-restorative-material
#15
Anand Sekhar, Akansha Anil, Manuel S Thomas, Kishore Ginjupalli
BACKGROUND: Disinfection of dentin surface prior to any restorative therapy is important for the longevity of the treatment rendered. However, these dentin disinfection methods should itself not interfere with the adhesion of the restorative material. Therefore the aim of this study was to determine the effect of various dentin disinfection protocols on the shear bond strength (SBS) of resin modified glass ionomer cement (RMGIC). MATERIAL AND METHODS: The occlusal surface of 40 extracted premolars were trimmed to obtain a flat dentinal surface and was randomly divided into four groups...
July 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/28828013/retentive-strength-of-orthodontic-bands-cemented-with-amorphous-calcium-phosphate-modified-glass-ionomer-cement-an-in-vitro-study
#16
Farzin Heravi, Maryam Omidkhoda, Niloufar Koohestanian, Tabassom Hooshmand, Hossein Bagheri, Negin Ghaffari
OBJECTIVES: The aim of this study was to evaluate and compare the retentive strength of orthodontic bands cemented with amorphous calcium phosphate (ACP)-containing and conventional glass ionomer cements (GICs). MATERIALS AND METHODS: One-hundred-and-twenty mandibular third molars were embedded in acrylic resin blocks with the buccal surface of crowns perpendicular to the base of the mold. The teeth were randomly divided into four groups containing 30 teeth each...
January 2017: Journal of Dentistry of Tehran University of Medical Sciences
https://www.readbyqxmd.com/read/28827848/biocompatibility-evaluation-of-four-dentin-adhesives-used-as-indirect-pulp-capping-materials
#17
Olga Cortés, Antonia Alcaina, Antonia Bernabé
BACKGROUND: In many cases, the indirect pulp treatment (IPT) is an acceptable treatment for deciduous teeth with reversible pulp inflammation. Various medicaments have been used for IPT, ranging from calcium hydroxide and glass ionomers to dentin adhesives. OBJECTIVE: This in vitro trial aimed to measure cytotoxicity in a cell culture, comparing the following four adhesives: Xeno® V (XE), Excite® F DSC (EX), Adhese® OneF (AD) and Prime & Bond NT (PB). MATERIALS AND METHODS: The adhesives were prepared according to the manufacturer's instructions...
June 2017: Acta Stomatologica Croatica
https://www.readbyqxmd.com/read/28826984/in-vitro-evaluation-of-a-silica-whitening-toothpaste-containing-blue-covarine-on-the-colour-of-teeth-containing-anterior-restoration-materials
#18
Carole J Philpotts, Eufemia Cariddi, Paul S Spradbery, Andrew Joiner
OBJECTIVES: To investigate the effects of a silica-based whitening toothpaste containing blue covarine on the colour of restorations in extracted human teeth. METHODS: Human extracted teeth were mounted in acrylic resin. A cavity was cut into the enamel surface and the specimen restored with either glass ionomer or composite dental materials. Following 4 weeks storage in water, specimens were treated with either water, red wine or a toothpaste containing blue covarine (n=10) for 24h followed by brushing with a silica-based toothpaste...
August 18, 2017: Journal of Dentistry
https://www.readbyqxmd.com/read/28822566/human-pulp-responses-to-partial-pulpotomy-treatment-with-theracal-as-compared-with-biodentine-and-proroot-mta-a-clinical-trial
#19
Hengameh Bakhtiar, Mohammad Hossein Nekoofar, Pouyan Aminishakib, Fatemeh Abedi, Fereshteh Naghi Moosavi, Ehsan Esnaashari, Arash Azizi, Samar Esmailian, Mohammad Reza Ellini, Vahid Mesgarzadeh, Mehdi Sezavar, Imad About
INTRODUCTION: Questions exist regarding the efficacy of resin-containing materials such as TheraCal directly applied on the pulp. This study sought to investigate the clinical efficacy of TheraCal as compared with Biodentine and ProRoot mineral trioxide aggregate (MTA) for partial pulpotomy. METHODS: In this clinical trial, partial pulpotomy was performed for 27 sound human maxillary and mandibular third molars scheduled for extraction. The teeth were randomly divided into 3 groups (n = 9) and underwent partial pulpotomy with TheraCal, Biodentine, and ProRoot MTA...
August 16, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/28816187/comparison-of-film-thickness-of-two-commercial-brands-of-glass-lonomer-cement-and-one-dual-cured-composite-an-in-vitro-study
#20
Rajat R Khajuria, Rishav Singh, Pranamee Barua, Nausheen Hajira, Naveen Gupta, Rohit R Thakkar
AIM: The present study is undertaken to examine the film thickness of three most commonly used luting cements and to determine their usage as a luting agent. MATERIALS AND METHODS: This study was carried out strictly according to the guidelines of American Dental Association (ADS) specification no. 8. Two glass slabs of 5 cm in length and 2 cm in width were used. One glass slab was kept over the other glass slab and the space between the two glass slabs was measured using metallurgical microscope at the power of 10*...
August 1, 2017: Journal of Contemporary Dental Practice
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