WTS database

Title	Pub Year	Author	SearchLink Sort descending
Effects of environment and lifestyle on gastroesophageal reflux disease	2011	Portland VA Medical Center, Oregon Health & Science University, Portland, Oreg., USA. sonnenbe@ohsu.edu	Read more...
Source Type Print(0) Ref Type Journal Article Periodical, Full Digestive diseases (Basel, Switzerland) Periodical, Abbrev. Dig.Dis. Pub Date Free Form Volume 29 Issue 2 Start Page 229 Other Pages 234 Notes LR: 20130715; CI: Copyright (c) 2011; JID: 8701186; 2011/07/05 [aheadofprint]; ppublish Place of Publication Switzerland ISSN/ISBN 1421-9875; 0257-2753 Accession Number PMID: 21734389 Language eng SubFile Journal Article; Review; IM DOI 10.1159/000323927 [doi] Output Language Unknown(0) PMID 21734389 Abstract BACKGROUND: Gastroesophageal reflux disease (GERD) is comprised of a spectrum of related disorders, including hiatal hernia, reflux disease with its associated symptoms, erosive esophagitis, peptic stricture, Barrett's esophagus, and esophageal adenocarcinoma. Besides multiple pathophysiological associations among these disorders, they are also characterized by their comorbid occurrence in identical patients and by their similar epidemiologic behavior. The occurrence of GERD is shaped by marked temporal and geographic variations, suggesting the influence of environmental risk factors in the etiology of these diseases. VARIATIONS BY TIME, GEOGRAPHY, AND RACE: Between 1975 and 2005, the incidence of GERD and esophageal adenocarcinoma increased fivefold in most Western countries. The incidence of GERD also appears to be rising in the most developed countries of Asia. All severe forms of GERD, such as erosive esophagitis, peptic stricture, Barrett's metaplasia, and esophageal adenocarcinoma, are more common among whites than other ethnic groups. AFFLUENCE AND OBESITY AS RISK FACTORS: Barrett's esophagus and esophageal adenocarcinoma tend to occur slightly more often in subjects with higher income. Overweight and obesity contribute to the development of hiatal hernia, increase intra-abdominal pressure, and promote gastroesophageal reflux. Weight gain increases reflux symptoms, whereas weight loss decreases such symptoms. Other risk factors, such as smoking, alcohol, dietary fat, or drugs, play only a minor role in shaping the epidemiologic patterns of GERD. PROTECTION THROUGH HELICOBACTER PYLORI: On a population level, a high prevalence of H. pylori infection is likely to reduce levels of acid secretion and protect some carriers of the infection against reflux disease and its associated complications. Several studies have confirmed a lesser prevalence of H. pylori among subjects with than without GERD. Until recently, populations in Africa and Asia may have been protected against the development of GERD and esophageal adenocarcinoma by their higher prevalence of H. pylori infection. CONCLUSION: The study of environmental risk factors may provide an opportunity to better understand GERD and develop a means of its prevention. Descriptors Links Book Title Database Publisher S. Karger AG, Basel Data Source Authors Sonnenberg,A. Original/Translated Title URL Date of Electronic 20110705 PMCID Editors
College students and use of K2: an emerging drug of abuse in young persons	2011	Department of Epidemiology, University of Florida, Gainesville, Florida, USA. qmshjwhx@phhp.ufl.edu	Read more...
Source Type Print(0) Ref Type Journal Article Periodical, Full Substance abuse treatment, prevention, and policy Periodical, Abbrev. Subst.Abuse Treat.Prev.Policy. Pub Date Free Form 11-Jul Volume 6 Issue Start Page 16 Other Pages 597X-6-16 Notes LR: 20150204; CI: (c) 2011; GR: K07 CA114315/CA/NCI NIH HHS/United States; GR: R01 CA140150/CA/NCI NIH HHS/United States; GR: R01-CA140150/CA/NCI NIH HHS/United States; JID: 101258060; 0 (Cannabinoids); 0 (Street Drugs); OID: NLM: PMC3142218; 2011/04/12 [ Place of Publication England ISSN/ISBN 1747-597X; 1747-597X Accession Number PMID: 21745369 Language eng SubFile Journal Article; Research Support, N.I.H., Extramural; Research Support, Non-U.S. Gov't; IM DOI 10.1186/1747-597X-6-16 [doi] Output Language Unknown(0) PMID 21745369 Abstract BACKGROUND: K2 or "spice" has emerged as a popular legal alternative to marijuana among adolescents and young adults. However, no data has been published assessing prevalence of and associations with ever K2 use in any population. This study's aims were to examine prevalence of ever K2 use among a sample of college students, to determine characteristics of persons who use K2, and to access the association between K2 and other drug use. FINDINGS: Ever use of K2 was reported by 69 (8%) of the sample of 852 college students. Response rate was 36%. Bivariate and multivariate analyses assessed whether sociodemographic characteristics and other drug use were associated with ever use of K2. Ever use of K2 was reported by 69 (8%) of the sample. Among these 69 individuals, 61 (88%) had used a cigarette and 25 (36%) had used a hookah to smoke K2. In multivariate analyses, K2 use was more common in males (vs. females, adjusted Odds Ratio (aOR)=2.0, 95% Confidence Interval (CI)=1.2-3.5, p=0.01) and 1st or 2nd year college students (vs. 3rd year or above, aOR=2.4, 95% CI=1.2-5.0, p=0.02). CONCLUSIONS: Ever use of K2 in this sample was higher than ever use of many other drugs of abuse that are commonly monitored in adolescents and young adults. Although DEA had banned five synthetic cannabinoids recently, clinicians and public health officials concerned with substance abuse in youth should be aware of and monitor the use of this drug in college students over time. Descriptors Links Book Title Database Publisher Hu et al; licensee BioMed Central Ltd Data Source Authors Hu,X., Primack,B.A., Barnett,T.E., Cook,R.L. Original/Translated Title URL Date of Electronic 20110711 PMCID PMC3142218 Editors
Secondhand smoke exposure and neurobehavioral disorders among children in the United States	2011	Tobacco Free Research Institute, Dublin, Ireland. halpert@hsph.harvard.edu	Read more...
Source Type Print(0) Ref Type Journal Article Periodical, Full Pediatrics Periodical, Abbrev. Pediatrics Pub Date Free Form Aug Volume 128 Issue 2 Start Page 263 Other Pages 270 Notes JID: 0376422; 0 (Tobacco Smoke Pollution); 2011/07/11 [aheadofprint]; ppublish Place of Publication United States ISSN/ISBN 1098-4275; 0031-4005 Accession Number PMID: 21746720 Language eng SubFile Comparative Study; Journal Article; Research Support, Non-U.S. Gov't; AIM; IM DOI 10.1542/peds.2011-0023 [doi] Output Language Unknown(0) PMID 21746720 Abstract OBJECTIVES: The association between parent-reported postnatal secondhand tobacco smoke exposure in the home and neurobehavioral disorders (attention-deficit/hyperactivity disorder, learning disabilities, and conduct disorders) among children younger than 12 years in the United States was examined using the 2007 National Survey on Children's Health. Excess neurobehavioral disorders attributable to secondhand smoke (SHS) exposure in the home in 2007 were further investigated. METHODS: The methods used in this study were multivariable logistic regression models that accounted for potential confounders and complex survey designs to evaluate associations. RESULTS: A total of 6% of 55 358 children (aged /=2 childhood neurobehavioral disorders compared with children who were not exposed to SHS. Boys had a significantly higher risk. Older children, especially those aged 9 to 11 years, and those living in households with the highest poverty levels were at greater risk. In absolute terms, 274 100 excess cases in total of these 3 disorders could have been prevented if children had not been exposed to SHS in their homes. CONCLUSIONS: The findings of the study, which are associational and not necessarily causal, underscore the health burden of childhood neurobehavioral disorders that may be attributable to SHS exposure in homes in the United States. Descriptors Links Book Title Database Publisher Data Source Authors Kabir,Z., Connolly,G.N., Alpert,H.R. Original/Translated Title URL Date of Electronic 20110711 PMCID Editors
Young adult smokers' perceptions of plain packaging: a pilot naturalistic study	2011	Institute for Social Marketing, University of Stirling, Stirling FK9 4LA, Scotland, UK. c.s.moodie@stir.ac.uk	Read more...
Source Type Print(0) Ref Type Journal Article Periodical, Full Tobacco control Periodical, Abbrev. Tob.Control Pub Date Free Form Sep Volume 20 Issue 5 Start Page 367 Other Pages 373 Notes LR: 20120529; GR: Cancer Research UK/United Kingdom; JID: 9209612; EIN: Tob Control. 2012 May;21(3):329; 2011/07/12 [aheadofprint]; ppublish Place of Publication England ISSN/ISBN 1468-3318; 0964-4563 Accession Number PMID: 21752795 Language eng SubFile Journal Article; Research Support, Non-U.S. Gov't; IM DOI 10.1136/tc.2011.042911 [doi] Output Language Unknown(0) PMID 21752795 Abstract AIMS: To explore the impact, if any, that using plain (non-branded) cigarette packs in real-life settings has on young adult smokers. METHODS: Naturalistic-type research was employed, where smokers used brown 'plain' packs for 2 weeks and their regular packs for 2 weeks, in real-life settings. Participants were recruited in Glasgow, Scotland. Of the 140 smokers aged 18-35 years who participated in the naturalistic study, 48 correctly completed and returned all questionnaires. Over the 4-week study period, participants completed a questionnaire twice a week assessing pack perceptions and feelings, feelings about smoking, salience of health warnings and smoking-related behaviours. A subsample of 18 participated in a post-study interview, which employed a semistructured topic guide to assess perceptions and experiences of using plain packs. RESULTS: Trends in the data show that in comparison with branded packaging, plain packaging increased negative perceptions and feelings about the pack and about smoking. Plain packaging also increased avoidant behaviour (hiding the pack, covering the pack), certain smoking cessation behaviours, such as smoking less around others and forgoing cigarettes, and thinking about quitting. Almost half (n=8) of those in the post-study interview, predominantly women (n=6), reported that the use of plain packs had either increased avoidant behaviour or reduced consumption. CONCLUSIONS: This pilot naturalistic study suggests that plain packaging could potentially help reduce tobacco consumption among some young adult smokers, and women in particular. Employing an innovative research methodology, the findings of this study are consistent with, and indeed support, past plain packaging research. Descriptors Links Book Title Database Publisher Data Source Authors Moodie,C., Mackintosh,A.M., Hastings,G., Ford,A. Original/Translated Title URL Date of Electronic 20110712 PMCID Editors
Gastroesophageal reflux disease symptom severity, proton pump inhibitor use, and esophageal carcinogenesis	2011	Division of Thoracic and Foregut Surgery, Universty of Pittsburgh, Pittsburgh, PA 15232, USA.	Read more...
Source Type Print(0) Ref Type Journal Article Periodical, Full Archives of surgery (Chicago, Ill.: 1960) Periodical, Abbrev. Arch.Surg. Pub Date Free Form Jul Volume 146 Issue 7 Start Page 851 Other Pages 858 Notes LR: 20151119; GR: K08 DK074397/DK/NIDDK NIH HHS/United States; GR: K23 DK066165/DK/NIDDK NIH HHS/United States; GR: K23 DK066165-01/DK/NIDDK NIH HHS/United States; GR: R21 DK081161/DK/NIDDK NIH HHS/United States; GR: R21 DK081161/DK/NIDDK NIH HHS/United S Place of Publication United States ISSN/ISBN 1538-3644; 0004-0010 Accession Number PMID: 21768433 Language eng SubFile Comparative Study; Journal Article; Research Support, N.I.H., Extramural; Research Support, Non-U.S. Gov't; AIM; IM DOI 10.1001/archsurg.2011.174 [doi] Output Language Unknown(0) PMID 21768433 Abstract HYPOTHESIS: Screening for esophageal adenocarcinoma has focused on identifying Barrett esophagus (BE) in patients with severe, long-standing symptoms of gastroesophageal reflux disease (GERD). Unfortunately, 95% of patients who develop esophageal adenocarcinoma are unaware of the presence of BE before their cancer diagnosis, which means they never had been selected for screening. One possible explanation is that no correlation exists between the severity of GERD symptoms and cancer risk. We hypothesize that severe GERD symptoms are not associated with an increase in the prevalence of BE, dysplasia, or cancer in patients undergoing primary endoscopic screening. DESIGN: Cross-sectional study. SETTING: University hospital. PATIENTS: A total of 769 patients with GERD. INTERVENTIONS: Primary screening endoscopy performed from November 1, 2004, through June 7, 2007. MAIN OUTCOMES MEASURES: Symptom severity, proton pump inhibitor therapy, and esophageal adenocarcinogenesis (ie, BE, dysplasia, or cancer). RESULTS: Endoscopy revealed adenocarcinogenesis in 122 patients. An increasing number of severe GERD symptoms correlated positively with endoscopic findings of esophagitis (odds ratio, 1.05; 95% confidence interval, 1.01-1.09). Conversely, an increasing number of severe GERD symptoms were associated with decreased odds of adenocarcinogenesis (odds ratio, 0.94; 95% confidence interval, 0.89-0.98). Patients taking proton pump inhibitors were 61.3% and 81.5% more likely to have adenocarcinogenesis if they reported no severe typical or atypical GERD symptoms, respectively, compared with patients taking proton pump inhibitors, who reported that all symptoms were severe. CONCLUSIONS: Medically treated patients with mild or absent GERD symptoms have significantly higher odds of adenocarcinogenesis compared with medically treated patients with severe GERD symptoms. This finding may explain the failure of the current screening paradigm in which the threshold for primary endoscopic examination is based on symptom severity. Descriptors Links Book Title Database Publisher Data Source Authors Nason,K.S., Wichienkuer,P.P., Awais,O., Schuchert,M.J., Luketich,J.D., O'Rourke,R.W., Hunter,J.G., Morris,C.D., Jobe,B.A. Original/Translated Title URL Date of Electronic PMCID PMC4086744 Editors
A novel solid-phase microextraction using coated fiber based sol-gel technique using poly(ethylene glycol) grafted multi-walled carbon nanotubes for determination of benzene, toluene, ethylbenzene and o-xylene in water samples with gas chromatography-flam	2011	Department of Chemistry, Faculty of Sciences, Ferdowsi University of Mashhad, Iran. asyazdi@um.ac.ir	Read more...
Source Type Print(0) Ref Type Journal Article Periodical, Full Journal of chromatography.A Periodical, Abbrev. J.Chromatogr.A Pub Date Free Form 26-Aug Volume 1218 Issue 34 Start Page 5757 Other Pages 5764 Notes LR: 20151119; CI: Copyright (c) 2011; JID: 9318488; 0 (Benzene Derivatives); 0 (Nanotubes, Carbon); 0 (Water Pollutants, Chemical); 0 (Xylenes); 30IQX730WE (Polyethylene Glycols); 3FPU23BG52 (Toluene); J64922108F (Benzene); L5I45M5G0O (ethylbenzene); Z247 Place of Publication Netherlands ISSN/ISBN 1873-3778; 0021-9673 Accession Number PMID: 21782185 Language eng SubFile Evaluation Studies; Journal Article; Research Support, Non-U.S. Gov't; IM DOI 10.1016/j.chroma.2011.06.099 [doi] Output Language Unknown(0) PMID 21782185 Abstract In this study, poly(ethylene glycol) (PEG) grafted onto multi-walled carbon nanotubes (PEG-g-MWCNTs) were synthesized by the covalent functionalization of MWCNTs with hydroxyl-terminated PEG chains. For the first time, functionalized product of PEG-g-MWCNTs was used as selective stationary phase to prepare the sol-gel solid-phase microextraction (SPME) fiber in combination with gas chromatography-flame ionization detector (GC-FID) for the determination of ultra-trace levels of benzene, toluene, ethylbenzene and o-xylene (BTEX) in real water samples. The PEG-g-MWCNTs were characterized by Fourier transform infrared spectra and also thermo-gravimetric analysis, which verified that PEG chains were grafted onto the surface of the MWCNTs. The scanning electron micrographs of the fiber surface revealed a highly porous structure which greatly increases the surface area for PEG-g-MWCNTs sol-gel coating. This fiber demonstrated many inherent advantages, the main being the strong anchoring of the coating to the fused silica resulting from chemical bonding with the silanol groups on the fused-silica fiber surface. The new PEG-g-MWCNTs sol-gel fiber is simple to prepare, robust, with high thermal stability and long lifetime, up to 200 extractions. Important parameters influencing the extraction efficiency such as desorption temperature and time, extraction temperature, extraction time, stirring speed and salt effect were investigated and optimized. Under the optimal conditions, the method detection limits (S/N=3) were in the range of 0.6-3 pg mL(-1) and the limits of quantification (S/N=10) between 2 and 10 pg mL(-1). The relative standard deviations (RSDs) for one fiber (repeatability) (n=5) were obtained from 4.40 up to 5.75% and between fibers or batch to batch (n=3) (reproducibility) in the range of 4.31-6.55%. The developed method was successfully applied to real water samples while the relative recovery percentages obtained for the spiked water samples at 20 pg mL(-1) were from 90.21 to 101.90%. Descriptors Links Book Title Database Publisher Elsevier B.V Data Source Authors Sarafraz-Yazdi,A., Amiri,A., Rounaghi,G., Hosseini,H.E. Original/Translated Title URL Date of Electronic 20110703 PMCID Editors
Analysis and modeling of airborne BTEX concentrations from the Deepwater Horizon oil spill	2011	ChemRisk LLC, 4840 Pearl East Circle, Suite 300 West, Boulder, Colorado 80301, United States. havens@chemrisk.com	Read more...
Source Type Print(0) Ref Type Journal Article Periodical, Full Environmental science & technology Periodical, Abbrev. Environ.Sci.Technol. Pub Date Free Form 1-Sep Volume 45 Issue 17 Start Page 7372 Other Pages 7379 Notes LR: 20131121; JID: 0213155; 0 (Air Pollutants); 0 (Benzene Derivatives); 0 (Vehicle Emissions); 0 (Xylenes); 3FPU23BG52 (Toluene); J64922108F (Benzene); L5I45M5G0O (ethylbenzene); 2011/08/11 [aheadofprint]; ppublish Place of Publication United States ISSN/ISBN 1520-5851; 0013-936X Accession Number PMID: 21797246 Language eng SubFile Journal Article; IM DOI 10.1021/es200963x [doi] Output Language Unknown(0) PMID 21797246 Abstract Concerns have been raised about whether the Deepwater Horizon oil spill cleanup workers experienced adverse health effects from exposure to airborne benzene, toluene, ethylbenzene, and xylene (BTEX) which volatilized from surfaced oil. Thus, we analyzed the nearly 20 000 BTEX measurements of breathing zone air samples of offshore cleanup workers taken during the six months following the incident (made publicly available by British Petroleum). The measurements indicate that 99% of the measurements taken prior to capping the well were 32-, 510-, 360-, and 77-fold lower than the U.S. Occupational Safety and Health Administration's Permissible Exposure Limits (PELs) for BTEX, respectively. BTEX measurements did not decrease appreciably during the three months after the well was capped. Moreover, the magnitudes of these data were similar to measurements from ships not involved in oil slick remediation, suggesting that the BTEX measurements were primarily due to engine exhaust rather than the oil slick. To supplement the data analysis, two modeling approaches were employed to estimate airborne BTEX concentrations under a variety of conditions (e.g., oil slick thickness, wind velocity). The modeling results corroborated that BTEX concentrations from the oil were well below PELs and that the oil was not the primary contributor to the measured BTEX. Descriptors Links Book Title Database Publisher Data Source Authors Avens,H.J., Unice,K.M., Sahmel,J., Gross,S.A., Keenan,J.J., Paustenbach,D.J. Original/Translated Title URL Date of Electronic 20110811 PMCID Editors
Diversity of lactic acid bacteria in sian-sianzih (fermented clams), a traditional fermented food in Taiwan	2012	Department of Biotechnology, Ming Chuan University, Taoyuan 333, Taiwan. yisheng@mail.mcu.edu.tw	Read more...
Source Type Print(0) Ref Type Journal Article Periodical, Full Journal of the science of food and agriculture Periodical, Abbrev. J.Sci.Food Agric. Pub Date Free Form 30-Jan Volume 92 Issue 2 Start Page 321 Other Pages 327 Notes LR: 20151119; CI: Copyright (c) 2011; JID: 0376334; 33X04XA5AT (Lactic Acid); 451W47IQ8X (Sodium Chloride); 2011/04/07 [received]; 2011/06/07 [revised]; 2011/06/23 [accepted]; 2011/07/28 [aheadofprint]; ppublish Place of Publication England ISSN/ISBN 1097-0010; 0022-5142 Accession Number PMID: 21800326 Language eng SubFile Journal Article; IM DOI 10.1002/jsfa.4578 [doi] Output Language Unknown(0) PMID 21800326 Abstract BACKGROUND: Sian-sianzih (fermented clams) is a popular traditional fermented food in Taiwan. The lactic acid bacteria (LAB) microflora in sian-sianzih have not been studied in detail. In this study, LAB from sian-sianzih were isolated, characterized and identified. RESULTS: A total of 186 cultures of LAB were isolated from seven sian-sianzih samples and 29 cultures were isolated from its main raw substrate: clams. The identification results revealed up to 11 distinct bacterial species belonging to five genera in sian-sianzih, and three species belonging to two genera in clams. The most common bacterial genera in sian-sianzih were Lactobacillus and Weissella, followed by Leuconostoc, Pediococcus and Lactococcus. A regional similarity in LAB, with differences in diversity, was observed in the current study. On the other hand, Lactococcus lactis subsp. lactis was the most common species found in raw clam samples. The results also suggested that greater LAB diversity could be observed in wild clams than in cultured ones. Furthermore, antibacterial activities of the isolates were determined, and one Weisella hellenica strain showed inhibitory activity against the indicator strain Lactobacilluas sakei JCM 1157(T) . A sensory assessment of seven sian-sianzih samples was also performed and the results indicated that diversity of LAB has a great effect on its aroma and taste formation. CONCLUSION: The results demonstrate that various LAB species are distributed in sian-sianzih and have a great effect on the flavor of sian-sianzih. Descriptors Links Book Title Database Publisher Society of Chemical Industry Data Source Authors Chen,Y.S., Wu,H.C., Li,Y.H., Leong,K.H., Pua,X.H., Weng,M.K., Yanagida,F. Original/Translated Title URL Date of Electronic 20110728 PMCID Editors
Hookah use among college students from a Midwest University	2012	Department of Health and Sport Sciences, Otterbein University, 1 South Grove Street, Westerville, OH 43081, USA. rbraun@otterbein.edu	Read more...
Source Type Print(0) Ref Type Journal Article Periodical, Full Journal of community health Periodical, Abbrev. J.Community Health Pub Date Free Form Apr Volume 37 Issue 2 Start Page 294 Other Pages 298 Notes JID: 7600747; ppublish Place of Publication Netherlands ISSN/ISBN 1573-3610; 0094-5145 Accession Number PMID: 21805373 Language eng SubFile Journal Article; IM DOI 10.1007/s10900-011-9444-9 [doi] Output Language Unknown(0) PMID 21805373 Abstract National data indicate nearly a quarter of college students smoked from a hookah at some point in their lifetime regardless of gender. To address this issue, researchers assessed the perceptions, knowledge, beliefs of hookah users at a large Midwestern University and also determined what other drug related high-risk behaviors were associated with this behavior. An anonymous, online survey was sent to 2,000 randomly selected undergraduate students from a large Midwestern University. Researchers used a cross sectional research design to determine the prevalence and motivating factors associated with hookah use. Respondents included 438 individuals (60% female) with an average age of 23.1 (SD = 12.32), yielding a response rate of 22%. Approximately 15.4% of the sample had previously smoked hookah, while 6% used hookah within the past 30 days. Common motivating factors associated with smoking hookah included socializing/partying (29%), peer influence (27%), and for relaxation (25%). Correlations were calculated comparing hookah use to other high risk behaviors with the two highest correlations consisted of 30-day tobacco use (r = 0.67) and marijuana (r = 0.39). The results from this study suggest hookah use is limited to a small percentage of students. Students appear to smoke hookah for social reasons and underestimate the addictive properties associated with the product. Researchers and practitioners need to develop and evaluate specific interventions to educate college students about the health hazards associated with hookah use. Descriptors Links Book Title Database Publisher Data Source Authors Braun,R.E., Glassman,T., Wohlwend,J., Whewell,A., Reindl,D.M. Original/Translated Title URL Date of Electronic PMCID Editors
The effect of an Er,Cr:YSGG laser on the micro-shear bond strength of composite to the enamel and dentin of human permanent teeth	2012	Iran Center for Dental Research, Dental School of Shahid Beheshti University of Medical Sciences, Tehran, Iran.	Read more...
Source Type Print(0) Ref Type Journal Article Periodical, Full Lasers in medical science Periodical, Abbrev. Lasers Med.Sci. Pub Date Free Form Jul Volume 27 Issue 4 Start Page 761 Other Pages 765 Notes JID: 8611515; 0 (Acrylic Resins); 0 (Composite Dental Resin); 0 (Composite Resins); 0 (Dentin-Bonding Agents); 0 (Polyurethanes); 2010/11/30 [received]; 2011/06/29 [accepted]; 2011/08/02 [aheadofprint]; ppublish Place of Publication England ISSN/ISBN 1435-604X; 0268-8921 Accession Number PMID: 21809070 Language eng SubFile Journal Article; IM DOI 10.1007/s10103-011-0961-7 [doi] Output Language Unknown(0) PMID 21809070 Abstract The bond strength of resin composite to Er,Cr:YSGG laser-irradiated enamel and dentin has been evaluated in only a few studies. Therefore, we measured and compared the micro-shear bond strength of composite restorations to enamel and dentin using two different cavity-preparation tools and conditioning methods. One hundred and seventy-five caries-free human third molars were sectioned longitudinally into two different thicknesses and randomly assigned to seven subgroups (n = 25). Enamel groups included laser-cut without etching (LO), laser-cut and laser-etched (LL), laser-cut and acid-etched (LA), bur-cut and laser-etched (BL1), and bur-cut and acid-etched (BA1-comparison group). Dentinal groups included bur-cut and laser-etched (BL2) and bur-cut and acid-etched (BA2-comparison group). The specimens were bonded by Single Bond and Tygon tubes and were restored with Z100 composite. Failure patterns were evaluated using a stereomicroscope, and a shear bond test was performed at 0.5 mm/min. The mean shear bond strength values (MPa) for the LO, LL, LA, BL1 and BA1 enamel groups were 23.14, 23.77, 23.51, 19.30, and 28.99, respectively, whereas for the BL and BA dentinal groups, these values were 22.44 and 26.15, respectively. In enamel specimens, BA1 and LL groups presented the highest shear bond strength values, and the bur-cut and laser-etched (BL1) group showed the lowest values. In the laser-etched groups, bond strength values for bur-cut surfaces were significantly higher than those for laser-cut surfaces. Moreover, there was a significant difference between the BL2 and BA2 dentinal groups. The results of this study indicate that re-etching with acid phosphoric would be recommended if an Er,Cr:YSGG laser is used for tooth preparation or surface treatment. Descriptors Links Book Title Database Publisher Data Source Authors Jaberi Ansari,Z., Fekrazad,R., Feizi,S., Younessian,F., Kalhori,K.A., Gutknecht,N. Original/Translated Title URL Date of Electronic 20110802 PMCID Editors

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