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Journal of Dental Research, Dental Clinics, Dental Prospects

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https://www.readbyqxmd.com/read/27651887/fissure-sealant-materials-wear-resistance-of-flowable-composite-resins
#1
Sohrab Asefi, Solmaz Eskandarion, Shadi Hamidiaval
Background. Wear resistance of pit and fissure sealant materials can influence their retention. Wear characteristics of sealant materials may determine scheduling of check-up visits. The aim of this study was to compare wear resistance of two flowable composite resins with that of posterior composite resin materials. Methods. Thirty-five disk-shaped specimens were prepared in 5 groups, including two flowable composite resins (Estelite Flow Quick and Estelite Flow Quick High Flow), Filtek P90 and Filtek P60 and Tetric N-Ceram...
2016: Journal of Dental Research, Dental Clinics, Dental Prospects
https://www.readbyqxmd.com/read/27651886/the-sealing-ability-of-novel-kryptonite-adhesive-bone-cement-as-a-retrograde-filling-material
#2
İsmail Uzun, Cangül Keskin, Buğra Güler
Background. This study evaluated the ability of Kryptonite bone cement in sealing retrograde cavities. Methods. The root canals of one hundred extracted human maxillary incisor teeth were instrumented up to master apical file #40 using Mtwo rotary system and obturated with gutta-percha and AHPlus sealer by cold lateral compaction method. The specimens were assigned to one control group and four experimental groups based on the retrograde filling materials (n=20). The specimens were immersed in 0.5% Rhodamine B solution for 48h...
2016: Journal of Dental Research, Dental Clinics, Dental Prospects
https://www.readbyqxmd.com/read/27651885/effect-of-screw-access-hole-preparation-on-fracture-load-of-implant-supported-zirconia-based-crowns-an-in-vitro-study
#3
Hadi Mokhtarpour, Reza Eftekhar Ashtiani, Minoo Mahshid, Farhad Tabatabaian, Marzieh Alikhasi
Background. Fracture load of implant-supported restorations is an important factor in clinical success. This study evaluated the effect of two techniques for screw access hole preparation on the fracture load of cement-screw-retained implant-supported zirconia-based crowns. Methods. Thirty similar cement-screw-retained implant-supported zirconia-based maxillary central incisor crowns were evaluated in three groups of 10. Group NH: with no screw access holes for the control; Group HBS: with screw access holes prepared with a machine before zirconia sintering; Group HAS: with screw access holes prepared manually after zirconia sintering...
2016: Journal of Dental Research, Dental Clinics, Dental Prospects
https://www.readbyqxmd.com/read/27651884/antimicrobial-effect-of-chlorhexidine-on-aggregatibacter-actinomycetemcomitans-biofilms-associated-with-peri-implantitis
#4
Zeinab Kadkhoda, Zeinab Amarlu, Saeed Eshraghi, Nazanin Samiei
Background. This study aimed to assessthe antimicrobial effect of chlorhexidine (CHX) on Aggregatibacter actinomycetemcomitans biofilms isolated from subgingival plaque of peri-implantitis lesions. Methods. Thirteen patients requiring peri-implantitis treatment were consecutively selected and their subgingival biofilm was collected by inserting fine sterile paper points into peri-implant pockets for 15 seconds. A. actinomycetemcomitans was isolated from the subgingival biofilm and cultured. In this study, the standard strain of A...
2016: Journal of Dental Research, Dental Clinics, Dental Prospects
https://www.readbyqxmd.com/read/27651883/effect-of-non-surgical-periodontal-treatment-on-transferrin-serum-levels-in-patients-with-chronic-periodontitis
#5
Adileh Shirmohamadi, Mohamad Taghi Chitsazi, Masoumeh Faramarzi, Ashkan Salari, Fereshteh Naser Alavi, Nazila Pashazadeh
Background. Transferrin is a negative acute phase protein, which decreases during inflammation and infection. The aim of the present investigation was to evaluate changes in the transferrin serum levels subsequent to non-surgical treatment of chronic periodontal disease. Methods. Twenty patients with chronic periodontitis and 20 systemically healthy subjects without periodontal disease, who had referred to Tabriz Faculty of Dentistry, were selected. Transferrin serum levels and clinical periodontal parameters (pocket depth, clinical attachment level, gingival index, bleeding index and plaque index) were measured at baseline and 3 months after non-surgical periodontal treatment...
2016: Journal of Dental Research, Dental Clinics, Dental Prospects
https://www.readbyqxmd.com/read/27651882/clinical-comparison-of-coronally-advanced-flap-plus-amniotic-membrane-or-subepithelial-connective-tissue-in-the-treatment-of-miller-s-class-i-and-ii-gingival-recessions-a-split-mouth-study
#6
Ardeshir Lafzi, Nader Abolfazli, Masoumeh Faramarzi, Masoumeh Eyvazi, Amir Eskandari, Fariba Salehsaber
Background. The aim of the present study was to compare coronally advanced flap (CAF) plus amniotic membrane (AM) to CAF with connective tissue graft (CTG) in the treatment of Miller's class I and II gingival recessions. Methods. Eleven healthy subjects with thirty Miller's class І and ІІ gingival recessions ≥3 mm, were selevted for this research and randomly assigned to two groups in a split-mouth design. In the control group gingival recessions were treated with CAF and CTG; however, in the test group the lesions were treated with (AM) and CAF...
2016: Journal of Dental Research, Dental Clinics, Dental Prospects
https://www.readbyqxmd.com/read/27651881/the-effect-of-ameloblastoma-and-keratocystic-odontogenic-tumor-on-the-displacement-pattern-of-inferior-alveolar-canal-in-cbct-examinations
#7
Isa Abdi, Kourosh Taheri Talesh, Javad Yazdani, Sareh Keshavarz Meshkin Fam, Mohammad Ali Ghavimi, Seyed Ahmad Arta
Background. The inferior alveolar canal should be examined as a significant anatomical landmark, particularly in the posterior body and ramus of the mandible, for dental and surgical procedures. In the present study, the effects of two pathological lesions, ameloblastoma and keratocystic odontogenic tumor, on canal displacement were investigated. Methods. This study had a single-blinded design. Twenty-six patients with lesions in the mandible referred to Imam Reza Hospital, Tabriz, Iran, were studied in two equal groups (13 patients with a histopathological diagnosis of ameloblastoma and 13 with a histopathological diagnosis of odontogenic keratocyst)...
2016: Journal of Dental Research, Dental Clinics, Dental Prospects
https://www.readbyqxmd.com/read/27651880/comparison-of-multiple-rebond-shear-strengths-of-debonded-brackets-after-preparation-with-sandblasting-and-co2-laser
#8
Mojgan Kachoei, Amir Mohammadi, Maziar Esmaili Moghaddam, Sahand Rikhtegaran, Mahmoud Pourghaznein, Sajjad Shirazi
Background. Failure of orthodontic bracket bonds is a common occurrence during orthodontic treatment. Different techniques have been suggested in the literature to remove resin residues from the bracket bases and enamel surfaces to prepare the surfaces again after debonding. This study attempted to compare multiple rebond shear strengths (SBS) of debonded brackets following preparation with sandblasting and CO2 laser. Methods. The brackets were bonded on 30 human and bovine maxillary central incisors using self-curing composite resin...
2016: Journal of Dental Research, Dental Clinics, Dental Prospects
https://www.readbyqxmd.com/read/27651879/association-between-genetic-taste-sensitivity-2d-4d-ratio-dental-caries-prevalence-and-salivary-flow-rate-in-6-14-year-old-children-a-cross-sectional-study
#9
Chintamaneni Raja Lakshmi, Doppalapudi Radhika, Mpv Prabhat, Sujana Mulk Bhavana, Nallamilli Sai Madhavi
Background. The aim of this study was to assess the relationship between genetic taste sensitivity, dietary preferences and salivary flow rate in 6‒14-year-old children for identification of individuals at higher risk of developing dental caries. Methods. A total of 500 children 6‒14 years of age, of both genders, who reported to the Department of Oral Medicine and Radiology, were included. Propylthiouracil (PROP) sensitivity test was carried out and the subjects whose perception was bitter were grouped as tasters, whereas those who were unable to perceive any taste were grouped as non-tasters...
2016: Journal of Dental Research, Dental Clinics, Dental Prospects
https://www.readbyqxmd.com/read/27651878/culture-based-identification-of-pigmented-porphyromonas-and-prevotella-species-in-primary-endodontic-infections
#10
Anuradha Rajaram, Vijayalakshmi S Kotrashetti, Pradeep D Somannavar, Preeti Ingalagi, Kishore Bhat
Background. The most common species isolated from primary endodontic infections are black-pigmented bacteria. These species are implicated in apical abscess formation due to their proteolytic activity and are fastidious in nature. Therefore, the present study was carried out to evaluate the presence and identification of various pigmented Porphyromonas and Prevotella species in the infected root canal through culture-based techniques. Methods. Thirty-one patients with primary endodontic infections were selected...
2016: Journal of Dental Research, Dental Clinics, Dental Prospects
https://www.readbyqxmd.com/read/27651877/the-prevalence-of-dental-fluorosis-and-exposure-to-fluoride-in-drinking-water-a-systematic-review
#11
Fatemeh Goodarzi, Amir Hossein Mahvi, Mostafa Hosseini, Saharnaz Nedjat, Ramin Nabizadeh Nodehi, Mohammad Javad Kharazifard, Mina Parvizishad, Zahra Cheraghi
Background. Regarding the lack of comprehensive systematic review on the efficacy of water fluoridation and prevalence of dental fluorosis, the aim of the current research was to systematically study the prevalence of dental fluorosis at different levels of water fluoride in the world and lay emphasis on the amount of fluoride in drinking water. Methods. Studies were searched in PubMed, Scopus, SID, and IranMedex, with regard to inclusion criteria. Study validity was assessed with some checklists, and analyses were performed to ascertain the prevalence of dental fluorosis among individuals categorized in age groups...
2016: Journal of Dental Research, Dental Clinics, Dental Prospects
https://www.readbyqxmd.com/read/27429730/regarding-multiple-calcifying-hyperplastic-dental-follicle-mchdf-a-case-report
#12
Sonal Grover
No abstract text is available yet for this article.
2016: Journal of Dental Research, Dental Clinics, Dental Prospects
https://www.readbyqxmd.com/read/27429729/mercury-release-of-amalgams-with-various-silver-contents-after-exposure-to-bleaching-agent
#13
Mahmoud Bahari, Parnian Alizadeh Oskoee, Siavash Savadi Oskoee, Firoz Pouralibaba, Ali Morsali Ahari
Background. Since it is possible for carbamide peroxide (CP) bleaching agent to contact old amalgam restorations, the present in vitro study evaluated the amount of dissolved mercury released from amalgam restorations with various percent-ages of silver content subsequent to the use of 15% CP. Methods. Thirty ANA 2000 amalgam disks with 43.1% silver content and thirty ANA 70 amalgam disks with 69.3% silver content were prepared. In each group, 15 samples were randomly placed in glass tubes containing 15% CP (as experimental groups) and the remaining 15 samples were placed in buffered phosphate solution (as control groups) with the same 3-mL volume for 48 hours...
2016: Journal of Dental Research, Dental Clinics, Dental Prospects
https://www.readbyqxmd.com/read/27429728/the-effect-of-silica-nanoparticles-on-the-mechanical-properties-of-fiber-reinforced-composite-resins
#14
Mohammad Bagher Rezvani, Mohammad Atai, Faeze Hamze, Reihane Hajrezai
Background. Nanotechnology has introduced many nanoparticles in recent years, which can be incorporated for mechanical improvement of dental materials. However, the existing data are widely sparse. This study investigated the reinforcing effect of silica nanoparticles when incorporated into the matrix phase of an experimental dental fiber-reinforced compositeresin (FRC) through evaluation of its flexural properties. Methods. In this experimental study FRC samples were divided into two main groups (containing two or three bundles),either of whic consisted of five subgroups with 0, 0...
2016: Journal of Dental Research, Dental Clinics, Dental Prospects
https://www.readbyqxmd.com/read/27429727/the-effect-of-zno-nanoparticle-coating-on-the-frictional-resistance-between-orthodontic-wires-and-ceramic-brackets
#15
Ahmad Behroozian, Mojgan Kachoei, Masumeh Khatamian, Baharak Divband
Background. Any decrease in friction between orthodontic wire and bracket can accelerate tooth movement in the sliding technique and result in better control of anchorage. This study was carried out to evaluate frictional forces by coating orthodontic wires and porcelain brackets with zinc oxide nanoparticles (ZnO). Methods . In this in vitro study, we evaluated a combination of 120 samples of 0.019×0.025 stainless steel (SS) orthodonticwires and 22 mil system edgewise porcelain brackets with and without spherical zinc oxide nanoparticles...
2016: Journal of Dental Research, Dental Clinics, Dental Prospects
https://www.readbyqxmd.com/read/27429726/effects-of-orthokin-sensikin-and-persica-mouth-rinses-on-the-force-degradation-of-elastic-chains-and-niti-coil-springs
#16
Zahra Javanmardi, Parisa Salehi
Background. Elastomeric chains and NiTi coil springs are two major traction aids in orthodontic tooth movements. Force degradation occurs over time in both groups, with higher percentages in elastic chains. The effects of environmental factors and some mouth rinses on this force decay have been previously studied. No study has been performed to evaluate the effect of current popular mouth rinses such as Orthokin, Sensikin and Persica on this force degradation. Methods . Forty pieces of elastic chains consisting of 5 loops (Ortho Technology, USA) and 40 NiTi closed coil springs (3M Unitek, Germany) were divided into 4 groups: control (artificial saliva), Orthokin mouthwash, Sensikin mouthwash and Persica mouthwash...
2016: Journal of Dental Research, Dental Clinics, Dental Prospects
https://www.readbyqxmd.com/read/27429725/in-vitro-antifungal-activity-of-different-components-of-centratherum-anthelminticum-and-ocimum-sanctum-seed-oils-and-their-synergism-against-oral-pathogenic-fungi
#17
Aparna H Gopalkrishna, Seshagiri M, Sunil Muddaiah, Shashidara R
Background. Opportunistic fungal infections like candidiasis are common in the oral cavity. In recent years Candida species have shown resistance against a number of synthetic drugs. This study assessed the antifungal activity of Centratherum anthelminticum and Ocimum sanctum seed oils against six common pathogenic Candida strains. Synergistic activity of the major oil components was also studied. Methods. Antifungal activity of Centratherum anthelminticum and Ocimum sanctum seed oils were tested against six oral fungal pathogens, Candida albicans ATCC 90028, Candida krusei 6258, Candida tropicalis 13803, Candida parapsilosis22019, Candida glabrata 90030 and Candida dubliniensis MYA 646, by disc diffusion and broth microdilution methods to determine the diameter of inhibition zone (DIZ) and minimum inhibitory concentration (MIC), respectively...
2016: Journal of Dental Research, Dental Clinics, Dental Prospects
https://www.readbyqxmd.com/read/27429724/a-comparison-of-the-effect-of-triamcinolone-ointment-and-mouthwash-with-or-without-zinc-on-the-healing-process-of-aphthous-stomatitis-lesions
#18
Masoumeh Mehdipour, Ali Taghavi Zenooz, Azin Sohrabi, Narges Gholizadeh, Ayla Bahramian, Zahra Jamali
Background. Recurrent aphthous stomatitis (RAS) is one of the most common ulcerative diseases of the oral mucosa. Definitive etiology of RAS has not been conclusively established. There is no certain treatment for aphthous stomatitis but some drugs such as steroids are commonly used for the treatment of RAS. Regarding the effect of zinc on the healing process of epithelial layer and cell division, in this research the effect of triamcinolone (with orabase) in combination with a zinc-containing mouthwash and triamcinolone alone on the healing process of RAS lesions was assessed...
2016: Journal of Dental Research, Dental Clinics, Dental Prospects
https://www.readbyqxmd.com/read/27429723/efficacy-of-adding-a-supporting-implant-in-stress-distribution-of-long-span-fixed-partial-dentures-a-3d-finite-element-analysis
#19
Rami Shurbaji Mozayek, Mirza Allaf, Mohammad B Abuharb
Background. Long span is seen in many clinical situations. Treatmentplanning options of these cases are difficult and may require FPD, RPD or ISP. Each option has its own disadvantages, including mechanical problems, patient comfort and cost. This article will evaluate the stress distribution of a different treatment option, which consists of adding a single sup-porting implant to the FPD by using 3D finite element analysis. Methods. Three models, each consisting of 5 units, were created as follows: 1. Tooth Pontic Pontic Pontic Tooth; 2...
2016: Journal of Dental Research, Dental Clinics, Dental Prospects
https://www.readbyqxmd.com/read/27429722/cytotoxic-effects-of-mineral-trioxide-aggregate-calcium-enrichedmixture-cement-biodentine-and-octacalcium-pohosphate-onhuman-gingival-fibroblasts
#20
Eshagh A Saberi, Narges Farhadmollashahi, Faroogh Ghotbi, Hamed Karkeabadi, Roholla Havaei
Background. This in vitro study compared the effects of mineral trioxide aggregate (MTA), calcium enriched mixture(CEM) cement, Biodentine (BD) and octacalcium phosphate (OCP) on the viability of human gingival fibroblasts (HGFs). Methods. After completion of the setting time of the materials under study, fibroblasts were placed in 24-well insert platesand 1 mg of each material was added to the respective wells. The plates were then incubated at 37°C. The inserts were removedat 24, 48 and 168 hours and 2,5-diphenyltetrazolium bromide was added to assess cytotoxicity via the MTT colorimetricassay...
2016: Journal of Dental Research, Dental Clinics, Dental Prospects
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