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BTEX pollution caused by motorcycles in the megacity of HoChiMinh 2013 University of Science, Vietnam National University, 227 Nguyen Van Cu, HoChiMinh 70000, Vietnam. ttnlan@hcmus.edu.vn
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Print(0)
Ref Type
Journal Article
Periodical, Full
Journal of Environmental Sciences (China)
Periodical, Abbrev.
J.Environ.Sci.(China)
Pub Date Free Form
1-Feb
Volume
25
Issue
2
Start Page
348
Other Pages
356
Notes
LR: 20131121; JID: 100967627; 0 (Air Pollutants); 0 (Vehicle Emissions); 0 (Xylenes); 3FPU23BG52 (Toluene); J64922108F (Benzene); ppublish
Place of Publication
Netherlands
ISSN/ISBN
1001-0742; 1001-0742
Accession Number
PMID: 23596956
Language
eng
SubFile
Journal Article; Research Support, Non-U.S. Gov't; IM
DOI
Output Language
Unknown(0)
PMID
23596956
Abstract
Monitoring of benzene, toluene and xylenes (BTEX) was conducted along with traffic counts at 17 roadside sites in urban areas of HoChiMinh. Toluene was the most abundant substance, followed by p,m-xylenes, benzene, o-xylene and ethylbenzene. The maximum observed hour-average benzene concentration was 254 microg/m3. Motorcycles contributed to 91% of the traffic fleet. High correlations among BTEX species, between BTEX concentrations and the volume of on-road motorcycles, and between inter-species ratios in air and in gasoline indicate the motorcycle-exhaust origin of BTEX species. Daily concentrations of benzene, toluene, ethylbenzene, p,m-xylenes and o-xylene were 56, 121, 21, 64 and 23 microg/m3, respectively, p,m-xylenes possess the highest ozone formation potential among the BTEX family.
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Database
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Data Source
Authors
Lan,T.T., Minh,P.A.
Original/Translated Title
URL
Date of Electronic
PMCID
Editors
Self-etch bonding agent beneath sealant: Bond strength for laser-irradiated enamel 2013 Department of Pediatric Clinics, Preventive and Community Dentistry, Dental School of Ribeirao Preto, University of Sao Paulo, Ribeirao Preto, SP, 14040-904, Brazil.; Department of Pediatric Clinics, Preventive and Community Dentistry, Dental School of Ri
Source Type
Print(0)
Ref Type
Journal Article
Periodical, Full
European journal of dentistry
Periodical, Abbrev.
Eur.J.Dent.
Pub Date Free Form
Jul
Volume
7
Issue
3
Start Page
289
Other Pages
295
Notes
LR: 20140616; JID: 101303672; OID: NLM: PMC4053617; OTO: NOTNLM; ppublish
Place of Publication
India
ISSN/ISBN
1305-7456
Accession Number
PMID: 24926208
Language
eng
SubFile
Journal Article
DOI
10.4103/1305-7456.115412 [doi]
Output Language
Unknown(0)
PMID
24926208
Abstract
OBJECTIVES: This study evaluated the in vitro shear bond strength (SBS) of a resin-based pit-and-fissure sealant (Fluroshield [F], Dentsply/Caulk) associated with either an etch-and-rinse (Adper Single Bond 2 [SB], 3M/ESPE) or a two-step self-etch adhesive system (Adper SE Plus [SE], 3M/ESPE) on Er: YAG laser-irradiated enamel. MATERIALS AND METHODS: Seventeen sound third molar crowns were embedded in acrylic resin, and the mesial-distal enamel surfaces were flattened. The enamel sites were irradiated with a 2.94-mum wavelength Er: YAG laser (120 mJ, 4 Hz, noncontact mode/17 mm, 20 s). The specimens were randomly assigned to three groups according to the bonding technique: I - 37% phosphoric acid etching + SB + F; II - SE + F and III - F applied to acid-etched enamel, without an intermediate layer of bonding agent. In all of the groups, a 3-mm diameter enamel-bonding site was demarcated and the sealant cylinders were bonded. After 24 hours in distilled water, the shear bond strength was tested at a crosshead speed of 0.5 mm/minute. The data were analyzed by one-way ANOVA and Tukey's test. The debonded specimens were examined with a stereomicroscope to assess the failure modes. RESULTS: The mean SBS values in MPa were I = 6.39 (+/-1.44); II = 9.50 (+/-2.79); and III = 5.26 (+/-1.82). No statistically significant differences were observed between groups I and III; SE/F presented a significantly higher SBS than that of the other groups (P = 0.001). With regard to the failure mode, groups I (65%) and II (75%) presented adhesive failures, while group III showed 50% adhesive failure. Cohesive failure did not occur. CONCLUSION: The application of the two-step self-etch bonding agent (Adper SE Plus) beneath the resin pit-and-fissure sealant placement resulted in a significantly higher bond strength for the Er:YAG laser-irradiated enamel.
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Database
Publisher
Data Source
Authors
Borsatto,M.C., Giuntini Jde,L., Contente,M.M., Gomes-Silva,J.M., Torres,C.P., Galo,R.
Original/Translated Title
URL
Date of Electronic
PMCID
PMC4053617
Editors
Meta-analysis of Barrett's esophagus in China 2013 Ying Dong, Xiao-Ying Feng, Chun-Meng Jiang, Department of Gastroenterology, the Second Affiliated Hospital of Dalian Medical University, Dalian 116023, Liaoning Province, China.; Ying Dong, Xiao-Ying Feng, Chun-Meng Jiang, Department of Gastroenterology,
Source Type
Print(0)
Ref Type
Journal Article
Periodical, Full
World journal of gastroenterology
Periodical, Abbrev.
World J.Gastroenterol.
Pub Date Free Form
14-Dec
Volume
19
Issue
46
Start Page
8770
Other Pages
8779
Notes
LR: 20151022; JID: 100883448; OID: NLM: PMC3870527; OTO: NOTNLM; 2013/08/14 [received]; 2013/09/23 [revised]; 2013/09/29 [accepted]; ppublish
Place of Publication
China
ISSN/ISBN
2219-2840; 1007-9327
Accession Number
PMID: 24379599
Language
eng
SubFile
Journal Article; Meta-Analysis; Review; IM
DOI
10.3748/wjg.v19.i46.8770 [doi]
Output Language
Unknown(0)
PMID
24379599
Abstract
AIM: To investigate the epidemiology and characteristics of Barrett's esophagus (BE) in China and compare with cases in the west. METHODS: Studies were retrieved from the China National Knowledge Infrastructure and PubMed databases using the terms "Barrett" and "Barrett AND China", respectively, as well as published studies about BE in China from 2000 to 2011. The researchers reviewed the titles and abstracts of all search results to determine whether or not the literature was relevant to the current topic of this research. The references listed in the studies were also searched. Inclusion and exclusion criteria for the literature were appropriately established, and the data reported in the selected studies were analyzed. Finally, a meta-analysis was performed. RESULTS: The current research included 3873 cases of BE from 69 studies. The endoscopic detection rate of BE in China was 1%. The ratio of male to female cases was 1.781 to 1, and the average age of BE patients was 49.07 +/- 5.09 years. Island-type and short-segment BE were the most common endoscopic manifestations, accounting for 4.48% and 80.3%, respectively, of all cases studied. Cardiac-type BE was observed in 40.0% of the cases, representing the most common histological characteristic of the condition. Cancer incidence was 1.418 per 1000 person-years. CONCLUSION: Average age of BE patients in China is lower than in Western countries. Endoscopic detection and cancer incidence were also lower in China.
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Links
Book Title
Database
Publisher
Data Source
Authors
Dong,Y., Qi,B., Feng,X.Y., Jiang,C.M.
Original/Translated Title
URL
Date of Electronic
PMCID
PMC3870527
Editors
Behavioral and environmental influences on fishing rewards and the outcomes of alternative management scenarios for large tropical rivers 2013 PPG/Dept. of Ecology, Federal University of Rio Grande do Sul, CP 15007, 91501-970 Porto Alegre, RS, Brazil. gustavo.hallwass@gmail.com
Source Type
Print(0)
Ref Type
Journal Article
Periodical, Full
Journal of environmental management
Periodical, Abbrev.
J.Environ.Manage.
Pub Date Free Form
15-Oct
Volume
128
Issue
Start Page
274
Other Pages
282
Notes
CI: Copyright (c) 2013; JID: 0401664; OTO: NOTNLM; 2012/10/14 [received]; 2013/05/13 [revised]; 2013/05/17 [accepted]; 2013/06/10 [aheadofprint]; ppublish
Place of Publication
England
ISSN/ISBN
1095-8630; 0301-4797
Accession Number
PMID: 23764509
Language
eng
SubFile
Journal Article; Research Support, Non-U.S. Gov't; IM
DOI
10.1016/j.jenvman.2013.05.037 [doi]
Output Language
Unknown(0)
PMID
23764509
Abstract
Identifying the factors that influence the amount of fish caught, and thus the fishers' income, is important for proposing or improving management plans. Some of these factors influencing fishing rewards may be related to fishers' behavior, which is driven by economic motivations. Therefore, those management rules that have less of an impact on fishers' income could achieve better acceptance and compliance from fishers. We analyzed the relative influence of environmental and socioeconomic factors on fish catches (biomass) in fishing communities of a large tropical river. We then used the results from this analysis to propose alternative management scenarios in which we predicted potential fishers' compliance (high, moderate and low) based on the extent to which management proposals would affect fish catches and fishers' income. We used a General Linear Model (GLM) to analyze the influence of environmental (fishing community, season and habitat) and socioeconomic factors (number of fishers in the crew, time spent fishing, fishing gear used, type of canoe, distance traveled to fishing grounds) on fish catches (dependent variable) in 572 fishing trips by small-scale fishers in the Lower Tocantins River, Brazilian Amazon. According to the GLM, all factors together accounted for 43% of the variation in the biomass of the fish that were caught. The behaviors of fishers' that are linked to fishing effort, such as time spent fishing (42% of the total explained by GLM), distance traveled to the fishing ground (12%) and number of fishers (10%), were all positively related to the biomass of fish caught and could explain most of the variation on it. The environmental factor of the fishing habitat accounted for 10% of the variation in fish caught. These results, when applied to management scenarios, indicated that some combinations of the management measures, such as selected lakes as no-take areas, restrictions on the use of gillnets (especially during the high-water season) and individual quotas larger than fishers' usual catches, would most likely have less impact on fishers' income. The proposed scenarios help to identify feasible management options, which could promote the conservation of fish, potentially achieving higher fishers' compliance.
Descriptors
Links
Book Title
Database
Publisher
Elsevier Ltd
Data Source
Authors
Hallwass,G., Lopes,P.F., Juras,A.A., Silvano,R.A.
Original/Translated Title
URL
Date of Electronic
20130610
PMCID
Editors
Predictors of adherence to behavioral counseling and medication among female prisoners enrolled in a smoking cessation trial 2013 1Department of Behavioral Sciences and Health Education, Emory University School of Public Health, Atlanta, GA, USA.
Source Type
Print(0)
Ref Type
Journal Article
Periodical, Full
Journal of correctional health care : the official journal of the National Commission on Correctional Health Care
Periodical, Abbrev.
J.Correct.Health.Care.
Pub Date Free Form
Oct
Volume
19
Issue
4
Start Page
236
Other Pages
247
Notes
GR: K23DA15774/DA/NIDA NIH HHS/United States; JID: 9503759; OTO: NOTNLM; 2013/08/15 [aheadofprint]; ppublish
Place of Publication
United States
ISSN/ISBN
1940-5200; 1078-3458
Accession Number
PMID: 23955055
Language
eng
SubFile
Journal Article; Research Support, N.I.H., Extramural; Research Support, Non-U.S. Gov't; IM
DOI
10.1177/1078345813499307 [doi]
Output Language
Unknown(0)
PMID
23955055
Abstract
Smoking is highly prevalent among prison populations. Adherence to counseling and nicotine replacement therapy predicts successful cessation. The authors examined predictors of >/= 80% adherence to counseling and nicotine patch in a cessation trial targeting female prisoners. Of the 202 participants included in these analyses, 66.8% were adherent to the patch, 51.2% were adherent to counseling, 16.3% were nonadherent to both, and 45.0% were adherent to both. Older age of smoking initiation (p = .01), higher baseline smoking (p = .03), and prior substance abuse treatment (p = .04) predicted counseling adherence. Predictors of patch adherence included greater prior smoking level (p = .07) and more quit attempts (p = .09). The predictors of adherence to both was more prior quit attempts (p = .04). Understanding adherence-related factors may increase effectiveness of cessation interventions.
Descriptors
Links
Book Title
Database
Publisher
Data Source
Authors
Berg,C.J., Ahluwalia,J.S., Cropsey,K.
Original/Translated Title
URL
Date of Electronic
20130815
PMCID
Editors
Tobacco use among Asian Americans, Native Hawaiians/Pacific Islanders, and mixed-race individuals: 2002-2010 2013 Department of Psychiatry and Behavioral Sciences, Duke University Medical Center, Durham, NC 27710, United States. litzy.wu@duke.edu
Source Type
Print(0)
Ref Type
Journal Article
Periodical, Full
Drug and alcohol dependence
Periodical, Abbrev.
Drug Alcohol Depend.
Pub Date Free Form
1-Sep
Volume
132
Issue
2-Jan
Start Page
87
Other Pages
94
Notes
LR: 20150219; CI: Copyright (c) 2013; GR: HHSN271200900499P/PHS HHS/United States; GR: R01 DA019623/DA/NIDA NIH HHS/United States; GR: R01DA019623/DA/NIDA NIH HHS/United States; GR: R33 DA027503/DA/NIDA NIH HHS/United States; GR: R33DA027503/DA/NIDA NIH H
Place of Publication
Ireland
ISSN/ISBN
1879-0046; 0376-8716
Accession Number
PMID: 23394689
Language
eng
SubFile
Journal Article; Research Support, N.I.H., Extramural; IM
DOI
10.1016/j.drugalcdep.2013.01.008 [doi]
Output Language
Unknown(0)
PMID
23394689
Abstract
BACKGROUND: Non-Hispanic Asian Americans, Native Hawaiians/Pacific Islanders (NHs/PIs), and mixed-race individuals are the fastest growing segments of the US population. We examined prevalences and correlates of tobacco use among these understudied groups. Prevalences among whites were included as a comparison. METHODS: Data were drawn from the 2002-2010 National Surveys on Drug Use and Health. Respondents aged >/=12 years were assessed for current (past-month) use of cigarettes, cigars, smokeless tobacco (chewing tobacco, snuff), and pipe tobacco. Respondents' race/ethnicity, age, sex, household income, government assistance, urbanicity of residence, residential stability, self-rated health, alcohol use, and drug use were examined as correlates. RESULTS: Between 2002 and 2010, there was a decline in the prevalence of cigarette smoking among whites (26.9% in 2002; 24.3% in 2010) and Asian Americans (18.0% in 2002; 11.1% in 2010). Prevalence of pipe tobacco use among mixed-race individuals increased from 0.2% in 2002 to 1.6% in 2010; there was little change in the prevalence of cigar and smokeless tobacco use in these racial/ethnic groups. Adjusted analyses showed that, compared with Asian Americans, mixed-race individuals had greater odds of using four tobacco products, and NHs/PIs had greater odds of using cigarettes, cigars, and smokeless tobacco. Regardless of race/ethnicity, male sex was a correlate of use of cigars, smokeless tobacco, and pipe tobacco; alcohol and drug use increased the odds of cigarette and cigar smoking. CONCLUSIONS: These new findings show prevalent tobacco use among NHs/PIs and mixed-race individuals, and highlight the importance of including these populations in future research and reporting.
Descriptors
Links
Book Title
Database
Publisher
Elsevier Ireland Ltd
Data Source
Authors
Wu,L.T., Swartz,M.S., Burchett,B., NIDA AAPI Workgroup, Blazer,D.G.
Original/Translated Title
URL
Date of Electronic
20130206
PMCID
PMC3659196
Editors
Solvent-impregnated agarose gel liquid phase microextraction of polycyclic aromatic hydrocarbons in water 2013 Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia.
Source Type
Print(0)
Ref Type
Journal Article
Periodical, Full
Journal of chromatography.A
Periodical, Abbrev.
J.Chromatogr.A
Pub Date Free Form
9-Aug
Volume
1302
Issue
Start Page
14
Other Pages
19
Notes
LR: 20131121; CI: Copyright (c) 2013; JID: 9318488; 0 (Polycyclic Hydrocarbons, Aromatic); 059QF0KO0R (Water); 9012-36-6 (Sepharose); OTO: NOTNLM; 2013/01/02 [received]; 2013/06/01 [revised]; 2013/06/03 [accepted]; 2013/06/14 [aheadofprint]; ppublish
Place of Publication
Netherlands
ISSN/ISBN
1873-3778; 0021-9673
Accession Number
PMID: 23809804
Language
eng
SubFile
Journal Article; Research Support, Non-U.S. Gov't; IM
DOI
10.1016/j.chroma.2013.06.010 [doi]
Output Language
Unknown(0)
PMID
23809804
Abstract
A new microextraction procedure termed agarose gel liquid phase microextraction (AG-LPME) combined with gas chromatography-mass spectrometry (GC-MS) was developed for the determination of selected polycyclic aromatic hydrocarbons (PAHs) in water. The technique utilized an agarose gel disc impregnated with the acceptor phase (1-octanol). The extraction procedure was performed by allowing the solvent-impregnated agarose gel disc to tumble freely in the stirred sample solution. After extraction, the agarose gel disc was removed and subjected to centrifugation to disrupt its framework and to release the impregnated solvent, which was subsequently withdrawn and injected into the GC-MS for analysis. Under optimized extraction conditions, the new method offered high enrichment factors (89-177), trace level LODs (9-14ngL(-1)) and efficient extraction with good relative recoveries in the range of 93.3-108.2% for spiked drinking water samples. AG-LPME did not exhibit any problems related to solvent dissolution, and it provided high extraction efficiencies that were comparable to those of hollow fiber liquid phase microextraction (HF-LPME) and significantly higher than those of agarose film liquid phase microextraction (AF-LPME). This technique employed a microextraction format and utilized an environmentally compatible solvent holder that supported the green chemistry concept.
Descriptors
Links
Book Title
Database
Publisher
Elsevier B.V
Data Source
Authors
Loh,S.H., Sanagi,M.M., Wan Ibrahim,W.A., Hasan,M.N.
Original/Translated Title
URL
Date of Electronic
20130614
PMCID
Editors
Shear strength of composite bonded to Er:YAG laser-prepared enamel: an in vitro comparative study 2013 Aachen University, Aachen, Germany, frankyung@rogers.com.
Source Type
Print(0)
Ref Type
Journal Article
Periodical, Full
Lasers in medical science
Periodical, Abbrev.
Lasers Med.Sci.
Pub Date Free Form
May
Volume
28
Issue
3
Start Page
879
Other Pages
889
Notes
LR: 20141120; JID: 8611515; 0 (Composite Resins); 2011/10/22 [received]; 2012/07/16 [accepted]; 2012/08/02 [aheadofprint]; ppublish
Place of Publication
England
ISSN/ISBN
1435-604X; 0268-8921
Accession Number
PMID: 22855382
Language
eng
SubFile
Comparative Study; Journal Article; IM
DOI
10.1007/s10103-012-1169-1 [doi]
Output Language
Unknown(0)
PMID
22855382
Abstract
The primary objective of this study is to investigate the adhesion properties between four current generations of bonding systems and enamel surface conditioned by Er:YAG laser, using an energy density comparable to the ablation threshold of enamel. By including an energy density comparable to published adhesion studies, the secondary objective is to compare the adhesion effects of these selected laser conditioning parameters on enamel with other similar published studies. MATERIAL AND METHODS: Buccal sides of randomly selected human molars (N=117) were prepared and divided into nine experimental groups depending on the generations of bonding system represented by the corresponding number (G4, G5, G6, G7) and the additional laser conditioning on the enamel surface represented by laser etch (LE) and laser etch with a higher pulse energy, followed by acid etch (AE), if required. The bonding resin systems and their specific requirements were applied after the enamel surfaces were laser conditioned following a specific set of laser parameters. Composite posts of 1.6 mm in diameter and approximately 6 mm in length were then restored on each of the sample surfaces. After 48 h, the composite assemblies were tested to failure under compression using a knife edge loading head at a cross head speed of 1 mm/min until the composite cylinders were separated from the surface. The data collected were then analyzed using one-way analysis of variance and SAS software program (9.1, TS1M3). RESULTS: No significant difference was found among these groups: AE+G4/LEAE+G4, G6/LE+G6, and G7/LE+G7. Significant differences were found in the remaining groups: AE+G5/LEAE+G5, AE+G5/LEAE-H+G5, and LEAE+G5/LEAE-H+G5. The bond strength results were compared among similar published data and possible influences from different laser parameters, bonding systems, and their combined impact on the enamel surface and its adhesion properties were analyzed. CONCLUSION: Under our specific settings, additional laser conditioning after phosphoric acid etch is beneficial to one generation of bonding resin (G5). There is no significant change or detrimental effect to the other three groups (G4, G6, and G7) of bonding resins with respect to their final bond strength. The published reports of lower bond strength after additional laser conditioning may be related to thermal damage or unfavorable alteration to the enamel surface by excessive laser energy and the chemistry of bonding systems studied. These factors will affect the overall wettability and the subsequent adhesion properties of the enamel surface.
Descriptors
Links
Book Title
Database
Publisher
Data Source
Authors
Yung,F.Y., Gutknecht,N., Franzen,R., Fischer,H.
Original/Translated Title
URL
Date of Electronic
20120802
PMCID
Editors
Alternative tobacco product use and smoking cessation: a national study 2013 Center for Tobacco Control Research and Education, University of California, San Francisco, CA 94143-1390, USA.
Source Type
Print(0)
Ref Type
Journal Article
Periodical, Full
American Journal of Public Health
Periodical, Abbrev.
Am.J.Public Health
Pub Date Free Form
May
Volume
103
Issue
5
Start Page
923
Other Pages
930
Notes
LR: 20151119; GR: R01 CA141661/CA/NCI NIH HHS/United States; GR: R01-CA141661/CA/NCI NIH HHS/United States; JID: 1254074; 0 (Nicotinic Agonists); 6M3C89ZY6R (Nicotine); NIHMS456593; OID: NLM: NIHMS456593; OID: NLM: PMC3661190; 2013/03/14 [aheadofprint]; p
Place of Publication
United States
ISSN/ISBN
1541-0048; 0090-0036
Accession Number
PMID: 23488521
Language
eng
SubFile
Journal Article; Research Support, N.I.H., Extramural; AIM; IM
DOI
10.2105/AJPH.2012.301070 [doi]
Output Language
Unknown(0)
PMID
23488521
Abstract
OBJECTIVES: We investigated the frequency of alternative tobacco product use (loose leaf, moist snuff, snus, dissolvables, electronic cigarettes [e-cigarettes]) among smokers and the association with quit attempts and intentions. METHODS: A nationally representative probability-based cross-sectional survey of 1836 current or recently former adult smokers was completed in November 2011. Multivariate logistic regressions evaluated associations between alternative tobacco product use and smoking cessation behaviors. RESULTS: Of the smokers, 38% had tried an alternative tobacco product, most frequently e-cigarettes. Alternative tobacco product use was associated with having made a quit attempt, and those intending to quit were significantly more likely to have tried and to currently use the products than were smokers with no intentions to quit. Use was not associated with successful quit attempts. Interest in future use of alternative tobacco products was low, except for e-cigarettes. CONCLUSIONS: Alternative tobacco products are attractive to smokers who want to quit smoking, but these data did not indicate that alternative tobacco products promote cessation. Unsubstantiated overt and implied claims that alternative tobacco products aid smoking cessation should be prohibited.
Descriptors
Links
Book Title
Database
Publisher
Data Source
Authors
Popova,L., Ling,P.M.
Original/Translated Title
URL
Date of Electronic
20130314
PMCID
PMC3661190
Editors
Shear Bond Strength of an Etch-and-rinse Adhesive to Er:YAG Laser- and/or Phosphoric Acid-treated Dentin 2013 Associate Professor, Department of Restorative Dentistry, Faculty of Dentistry, Shahid Sadoughi University of Medical Sciences, Yazd, Iran.
Source Type
Print(0)
Ref Type
Journal Article
Periodical, Full
Journal of dental research, dental clinics, dental prospects
Periodical, Abbrev.
J.Dent.Res.Dent.Clin.Dent.Prospects
Pub Date Free Form
Volume
7
Issue
2
Start Page
67
Other Pages
73
Notes
LR: 20130724; JID: 101576035; OID: NLM: PMC3713863; OTO: NOTNLM; 2012/09/04 [received]; 2013/02/24 [accepted]; 2013/05/30 [epublish]; ppublish
Place of Publication
Iran
ISSN/ISBN
2008-210X; 2008-210X
Accession Number
PMID: 23875083
Language
eng
SubFile
Journal Article
DOI
10.5681/joddd.2013.012 [doi]
Output Language
Unknown(0)
PMID
23875083
Abstract
Background and aims. Er:YAG laser irradiation has been claimed to improve the adhesive properties of dentin; therefore, it has been proposed as an alternative to acid etching. The aim of this in vitro study was to investigate the shear bond strength of an etch-and-rinse adhesive system to dentin surfaces following Er:YAG laser and/or phosphoric acid etching. Materials and methods. The roots of 75 sound maxillary premolars were sectioned below the CEJ and the crowns were embedded in auto-polymerizing acrylic resin with the buccal surfaces facing up. The buccal surfaces were ground using a diamond bur and polished until the dentin was exposed; the samples were randomly divided into five groups (n=15) according to the surface treatment: (1) acid etching; (2) laser etching; (3) laser etching followed by acid etching; (4) acid etching followed by laser etching and (5) no acid etching and no laser etching (control group). Composite resin rods (Point 4, Kerr Co) were bonded to treated dentin surfaces with an etch-and-rise adhesive system (Optibond FL, Kerr Co) and light-cured.After storage for two weeks at 37 degrees C and 100% humidity and then thermocycling, bond strength was measured with a Zwick Universal Testing Machine at a crosshead speed of 1 mm/min. Data was analyzed using parametric and non-parametric tests (P
Descriptors
Links
Book Title
Database
Publisher
Data Source
Authors
Davari,A., Sadeghi,M., Bakhshi,H.
Original/Translated Title
URL
Date of Electronic
20130530
PMCID
PMC3713863
Editors