WTS database

Title	Pub Year	Author Sort descending	SearchLink
Acid-etch interval and shear bond strength of Er,Cr:YSGG laser-prepared enamel and dentin	2010	Department of Comprehensive Dentistry, School of Dentistry, University of Alabama at Birmingham, South Birmingham, Birmingham, AL 35294-0007, USA. drali@uab.edu	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 May Volume 25 Issue 3 Start Page 363 Other Pages 369 Notes LR: 20141120; JID: 8611515; 2008/07/02 [received]; 2009/01/29 [accepted]; 2009/03/14 [aheadofprint]; ppublish Place of Publication England ISSN/ISBN 1435-604X; 0268-8921 Accession Number PMID: 19288054 Language eng SubFile Evaluation Studies; Journal Article; Research Support, Non-U.S. Gov't; IM DOI 10.1007/s10103-009-0652-9 [doi] Output Language Unknown(0) PMID 19288054 Abstract The formation of a superficial layer of tiny flakes has been observed on teeth prepared by Erbium lasers. It has been suggested that removing this layer (mechanically or chemically) may increase the bond strength of the resin composite. The purpose of this study is to evaluate the effect of various etching times on bond strength of resin composite to enamel and dentin prepared by Er,Cr:YSGG laser. Sixty previously flattened human molars were irradiated for 10 s by an Er,Cr:YSGG laser. Enamel (E) specimens were etched with 37% H(3)PO(4) for 20, 40 or 60 s and dentin (D) specimens were etched for 15 or 30 s. All specimens were prepared for a standard shear bond strength (SBS) test (1 mm/min). Data were analyzed [ANOVA, Tukey post-hoc, a < 0.05)] and the failure mode was studied under SEM. Mean SBS+/-sd (MPa) for each group was 16.97 +/- 7.77 (E20s), 21.34 +/- 3.55 (E40s), 14.08 +/- 4.77 (E60s), 13.62 +/- 7.28 (D15s) and 13.15 +/- 6.25 (D30s). SBS for E40s was significantly higher than E60s (p = 0.023). No difference was noted between the dentin groups. SEM evaluation showed predominantly cohesive failure. Within the limits of this study, etching time significantly influenced the SBS of composite resin to laser-prepared enamel. SEM showed subsurface cracks, fissures, and deformities leading to predominantly cohesive failure in both enamel and dentin. Descriptors Acid Etching, Dental/methods, Dental Bonding, Dental Enamel/physiology/radiation effects/ultrastructure, Dentin/physiology/radiation effects/ultrastructure, Humans, In Vitro Techniques, Lasers, Solid-State/therapeutic use, Microscopy, Electron, Scanning, Molar/physiology/radiation effects/ultrastructure, Shear Strength Links Book Title Database Publisher Data Source Authors Obeidi,A., Liu,P. R., Ramp,L. C., Beck,P., Gutknecht,N. Original/Translated Title URL Date of Electronic 20090314 PMCID Editors
Review article: Barrett's oesophagus and carcinoma in Japan	2004	Department of Comprehensive Medicine and Psychosomatic Medicine, Tohoku University School of Medicine, Sendai 980-8574, Japan. m-hongo@mail.tains.tohoku.ac.jp	Read more...
Source Type Print(0) Ref Type Journal Article Periodical, Full Alimentary Pharmacology & Therapeutics Periodical, Abbrev. Aliment.Pharmacol.Ther. Pub Date Free Form Dec Volume 20 Suppl 8 Issue Start Page 50 Other Pages 54 Notes LR: 20051116; JID: 8707234; RF: 31; ppublish Place of Publication England ISSN/ISBN 0269-2813; 0269-2813 Accession Number PMID: 15575874 Language eng SubFile Journal Article; Review; IM DOI APT2230 [pii] Output Language Unknown(0) PMID 15575874 Abstract In Asia, oesophageal diseases, such as Barrett's oesophagus and oesophageal carcinoma, have traditionally been less common than in America and Europe. In recent years, however, the number of reported cases of these conditions in Japan has increased. Two large prospective studies, the Sendai Barrett's Esophagus Study (S-BEST) and the Far East Study (FEST), on the geographic prevalence of Barrett's oesophagus, have recently investigated the epidemiology of Barrett's oesophagus in Japan. Results from both studies showed that overall prevalence of the condition is lower than in the West: 0.9-1.2% in Japan compared with 1-4% in Europe and 5-12% in USA. Similar to the situation in the West, the condition was shown to be most prevalent in elderly male patients and least prevalent in patients with Helicobacter pylori. Adenocarcinoma of the oesophagus is still rare in this region, although there has been an increase in the annual death rate from 3.7 (1960) to 6.9 (1995) per 100,000 population. Risk factors for oesophageal carcinoma include a strong association with the prevalence of gastro-oesophageal reflux disease (GERD). With the increasing prevalence of GERD in the Japanese population, continued surveillance of changes in the epidemiology of columnar-lined oesophagus (a precursor of Barrett's oesophagus), Barrett's oesophagus and adenocarcinoma of the oesophagus is strongly recommended. Descriptors Adenocarcinoma/epidemiology/pathology, Barrett Esophagus/epidemiology/pathology, Esophageal Neoplasms/epidemiology/pathology, Gastroesophageal Reflux/epidemiology/pathology, Humans, Japan/epidemiology, Prevalence Links Book Title Database Publisher Data Source Authors Hongo,M. Original/Translated Title URL Date of Electronic PMCID Editors
Comparison of shear bond strength of composite resin to enamel surface with laser etching versus acid etching: An in vitro evaluation	2014	Department of Conservative Dentistry and Endodontics, Vasantdada Patil Dental College and Hospital, Kavalapur, Sangli, Maharashtra, India.; Department of Conservative Dentistry and Endodontics, Vasantdada Patil Dental College and Hospital, Kavalapur, Sang	Read more...
Source Type Print(0) Ref Type Journal Article Periodical, Full Journal of conservative dentistry : JCD Periodical, Abbrev. J.Conserv.Dent. Pub Date Free Form Jul Volume 17 Issue 4 Start Page 320 Other Pages 324 Notes LR: 20140818; JID: 101147009; OID: NLM: PMC4127688; OTO: NOTNLM; 2014/05/25 [received]; 2014/03/01 [revised]; 2014/05/27 [accepted]; ppublish Place of Publication India ISSN/ISBN 0972-0707; 0972-0707 Accession Number PMID: 25125842 Language eng SubFile Journal Article DOI 10.4103/0972-0707.136438 [doi] Output Language Unknown(0) PMID 25125842 Abstract INTRODUCTION: The aim of the study is in vitro evaluation of the shear bond strength of composite resin bonded to enamel which is pretreated using acid etchant and Er,Cr:Ysgg. MATERIALS AND METHODS: 40 extracted human teeth were divided in two groups of 20 each (Groups A and B). In Group A, prepared surface of enamel was etched using 37% phosphoric acid (Scotchbond, 3M). In Group B, enamel was surface treated by a an Er, Cr: YSGG laser system (Waterlase MD, Biolase Technology Inc., San Clemente, CA, USA) operating at a wavelength of 2,780 nm and having a pulse duration of 140-200 microsecond with a repetition rate of 20 Hz and 40 Hz. Bonding agent ((Scotchbond Multipurpose, 3M) was applied over the test areas on 20 samples of Groups A and B each, and light cured. Composite resin (Ceram X duo Nanoceramic restorative, Densply) was applied onto the test areas as a 3 x 3 mm diameter bid, and light cured. The samples were tested for shear bond strength. RESULTS: Mean shear bond strength for acid-etched enamel (26.41 +/- 0.66MPa, range 25.155 to 27.150 MPa) was significantly higher (P Descriptors Links Book Title Database Publisher Data Source Authors Hoshing,U.A., Patil,S., Medha,A., Bandekar,S.D. Original/Translated Title URL Date of Electronic PMCID PMC4127688 Editors
Morphology of resin-dentin interfaces after Er,Cr:YSGG laser and acid etching preparation and application of different bonding systems	2012	Department of Conservative Dentistry, Dental School, Bernhard Gottlieb University Clinic of Dentistry, Vienna, Austria. dr.beer@med.at	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 835 Other Pages 841 Notes JID: 8611515; 0 (Adhesives); 0 (Composite Resins); 0 (Dentin-Bonding Agents); 0 (Phosphoric Acids); E4GA8884NN (phosphoric acid); 2011/02/22 [received]; 2011/07/25 [accepted]; 2011/08/26 [aheadofprint]; ppublish Place of Publication England ISSN/ISBN 1435-604X; 0268-8921 Accession Number PMID: 21948398 Language eng SubFile Journal Article; IM DOI 10.1007/s10103-011-0979-x [doi] Output Language Unknown(0) PMID 21948398 Abstract The goal of this study was to show the modifications in the ultrastructure of the dentin surface morphology following different surface treatments. The stability of the adhesive compound with dentin after laser preparation compared with conventional preparation using different bonding agents was evaluated. An Er,Cr:YSGG laser and 36% phosphoric acid in combination with various bonding systems were used. A total of 100 caries-free human third molars were used in this study. Immediately after surgical removal teeth were cut using a band saw and 1-mm thick dentin slices were created starting at a distance of 4 mm from the cusp plane to ensure complete removal of the enamel. The discs were polished with silicon carbide paper into rectangular shapes to a size of 6 x 4 mm (+/-0,2 mm).The discs as well as the remaining teeth stumps were stored in 0.9% NaCl at room temperature. The specimens were divided into three main groups (group I laser group, group II etch group, group III laser and etch group) and each group was subdivided into three subgroups which were allocated to the different bonding systems (subgroup A Excite, subgroup B Scotchbond, subgroup C Syntac). Each disc and the corresponding tooth stump were treated in the same way. After preparation the bonding composite material was applied according to the manufacturers' guidelines in a hollow tube of 2 mm diameter to the disc as well as to the corresponding tooth stump. Shear bond strength testing and environmental scanning electron microscopy were used to assess the morphology and stability of the resin-dentin interface. The self-etching bonding system showed the highest and the most constant shear values in all three main groups, thus enabling etching with phosphoric acid after laser preparation to be avoided. Thus we conclude that laser preparation creates a surface texture that allows prediction of the quality of the restoration without the risk of negative influences during the following treatment steps. This can easily and repeatedly be achieved. Descriptors Links Book Title Database Publisher Data Source Authors Beer,F., Buchmair,A., Korpert,W., Marvastian,L., Wernisch,J., Moritz,A. Original/Translated Title URL Date of Electronic 20110826 PMCID Editors
In vitro shear bond strength of adhesive to normal and fluoridated enamel under various contaminated conditions	1999	Department of Conservative Dentistry, Istanbul University, Faculty of Dentistry, Capa, Turkey. benderli@istanbul.edu.tr	Read more...
Source Type Print(0) Ref Type Journal Article Periodical, Full Quintessence international (Berlin, Germany : 1985) Periodical, Abbrev. Quintessence Int. Pub Date Free Form Aug Volume 30 Issue 8 Start Page 570 Other Pages 575 Notes LR: 20131121; JID: 0342677; 0 (Composite Resins); 0 (Dentin-Bonding Agents); 0 (Maleates); 0 (Phosphoric Acids); 0 (Resin Cements); 0 (Saliva, Artificial); 0 (Scotchbond Multi-Purpose); 0 (Z100 composite resin); 059QF0KO0R (Water); 7631-86-9 (Silicon Diox Place of Publication ENGLAND ISSN/ISBN 0033-6572; 0033-6572 Accession Number PMID: 10635272 Language eng SubFile Comparative Study; Journal Article; D DOI Output Language Unknown(0) PMID 10635272 Abstract OBJECTIVE: This study examined the shear bond strength of bonding agents to normal or fluoridated enamel following use of weak or strong acids to prepare enamel surfaces and after contamination with a measured amount of saliva at various stages of the bonding procedure. METHOD AND MATERIALS: One hundred extracted human third molar teeth were randomly separated into 2 basic groups (normal or fluoridated teeth), then divided into 5 subgroups. Group A specimens were not contaminated. After etching, enamel surfaces were dry and clean. Group B was left with wet surfaces after etching. Group C specimens were contaminated with artificial saliva and then dried. Group D specimens were contaminated with artificial saliva, rinsed, and then dried. In group E, all enamel surfaces were left contaminated with saliva after the etching procedures (with maleic acid or phosphoric acids). Adhesive resins were applied to all enamel surfaces according to the manufacturer's instructions. The specimens were then mounted and tested to determine shear bond strength. RESULTS: If normal enamel surfaces were rinsed and dried immediately after contamination, there was no significant reduction of shear bond strength of adhesive to enamel. Specimens in group E and group C had significantly lower bond strengths than did control specimens (group A). In the fluoridated groups etched with the phosphoric acid, statistically significant reductions in bond strengths were obtained in all contamination groups and in the control group. In the fluoridated specimens, there were no statistically significant differences between any of the contamination groups and the control group when maleic acid was used. CONCLUSION: Saliva contamination may not be a risk factor for successful bonding between bonding agent and dental tissues for normal or fluoridated enamel surfaces if they are rinsed and dried immediately after contamination. Etching of normal enamel surfaces with phosphoric acid in the presence of contamination may provide higher shear bond strength than etching with maleic acid. Descriptors Acid Etching, Dental/methods, Composite Resins, Dental Bonding, Dental Enamel/chemistry, Dentin-Bonding Agents, Desiccation, Fluorides/chemistry, Humans, Maleates, Materials Testing, Molar, Phosphoric Acids, Random Allocation, Resin Cements, Saliva, Artificial, Silicon Dioxide, Statistics, Nonparametric, Tensile Strength, Water/chemistry, Zirconium Links Book Title Database Publisher Data Source Authors Benderli,Y., Gokce,K., Buyukgokcesu,S. Original/Translated Title URL Date of Electronic PMCID Editors
Bacterial biodiversity of traditional Zabady fermented milk	2008	Department of Dairy Science and Technology, Faculty of Agriculture, Alexandria University, Aflaton street, El-Shatby, Alexandria, Egypt. elbaradeig@yahoo.fr	Read more...
Source Type Print(0) Ref Type Journal Article Periodical, Full International journal of food microbiology Periodical, Abbrev. Int.J.Food Microbiol. Pub Date Free Form 10-Feb Volume 121 Issue 3 Start Page 295 Other Pages 301 Notes JID: 8412849; 0 (DNA, Bacterial); 2006/11/09 [received]; 2007/04/11 [revised]; 2007/11/06 [accepted]; 2007/11/17 [aheadofprint]; ppublish Place of Publication Netherlands ISSN/ISBN 0168-1605; 0168-1605 Accession Number PMID: 18077039 Language eng SubFile Journal Article; IM DOI S0168-1605(07)00587-9 [pii] Output Language Unknown(0) PMID 18077039 Abstract The aim of this work was to identify the bacterial biodiversity of traditional Zabady fermented milk using PCR-temporal temperature gel electrophoresis (PCR-TTGE) and PCR-denaturing gradient gel electrophoresis (PCR-DGGE). Most of the identified bacterial species in Zabady samples belonged to lactic acid bacteria (LAB), e.g., Streptococcus thermophilus, Lactococcus garvieae, Lactococcus raffinolactis, Lactococcus lactis, Leuconostoc citreum, Lactobacillus delbrueckii subsp. bulgaricus and Lactobacillus johnsonii. Using the culture-dependent and independent methods, the streptococcal and lactococcal groups appeared to be the major bacterial species in Zabady fermented milk, whereas the lactobacilli were the minor ones. The main dominant species was St. thermophilus followed by Lc. garvieae. Other molecular tools, e.g., species-specific PCR assay and cloning and sequencing strategy were used to confirm the TTGE and DGGE results. Lc. garvieae, Lc. raffinolactis, Ln. citreum, and Lb. johnsonii were identified for the first time in this type of Egyptian fermented milk. Descriptors Biodiversity, Colony Count, Microbial, Cultured Milk Products/microbiology, DNA, Bacterial/analysis, Egypt, Electrophoresis, Gel, Pulsed-Field/methods, Food Microbiology, Lactobacillus/classification/isolation & purification, Lactococcus/classification/isolation & purification, Leuconostoc/classification/isolation & purification, Phylogeny, Polymerase Chain Reaction/methods, Species Specificity, Streptococcus/classification/isolation & purification Links Book Title Database Publisher Data Source Authors El-Baradei,G., Delacroix-Buchet,A., Ogier,J. C. Original/Translated Title URL Date of Electronic 20071117 PMCID Editors
The effect of thermocycling on the adhesion of self-etching adhesives on dental enamel and dentin	2007	Department of Dental Biomaterials, Faculty of Dentistry, Alexandria University, Alexandria, Egypt.	Read more...
Source Type Print(0) Ref Type Journal Article Periodical, Full The journal of contemporary dental practice Periodical, Abbrev. J.Contemp.Dent.Pract. Pub Date Free Form 1-Feb Volume 8 Issue 2 Start Page 17 Other Pages 24 Notes LR: 20100826; JID: 101090552; 0 (Composite Resins); 0 (Dentin-Bonding Agents); 0 (Polymethacrylic Acids); 0 (Prime and Bond NT); 0 (Prompt L-Pop); 0 (Resin Cements); 0 (Xeno III); epublish Place of Publication United States ISSN/ISBN 1526-3711; 1526-3711 Accession Number PMID: 17277823 Language eng SubFile Comparative Study; Journal Article; Research Support, Non-U.S. Gov't; D; IM DOI 1526-3711-372 [pii] Output Language Unknown(0) PMID 17277823 Abstract AIM: The aim of the present study was to investigate the effectiveness of one total-etch self-priming adhesive and two one-step self-etching adhesive systems on the adhesion of a resin composite to both dentin and enamel. The effect of thermocycling on the adhesion was also investigated. The null hypothesis tested was thermocycling would not affect bond strengths to enamel and dentin treated with self-etching adhesives or a total-etch adhesive. METHODS AND MATERIALS: Two single-step self-etching adhesives [Xeno III (XE3) and Prompt L-Pop (PP)] and one two-step total-etch adhesive system (Prime & Bond NT) (P&B NT) were used in this study. Thirty caries-free unrestored human third molars were used to make specimens of enamel and dentin. Different adhesives were applied on enamel and dentin surfaces according to the manufacturer's instructions then hybrid composite restorative material was condensed on the surface using a mold. The bonded specimens were stored in distilled water at 37 masculineC for 24 hours before being tested. Half of the bonded specimens were tested for shear bond strength without thermocycling. The other half of the test specimens were thermocycled using a thermocycling apparatus in water baths held at 5 masculineC and 55 masculineC with a dwell time of one minute each for 10,000 cycles prior to shear testing. The mean shear bond strength before and after thermocycling was calculated, and the results were subjected to two-way analysis of variance (ANOVA) and repeated measure design to show the interaction between different materials and different times. RESULTS: The results showed shear bond strength on both enamel and dentin of the total-etch adhesive and the self-etching adhesives decreased after the specimens were subjected to thermocycling. CONCLUSIONS: The null hypothesis tested "thermocycling would not affect bond strengths treated with self-etching adhesives" was rejected. Furthermore, the study revealed the following: 1. The shear bond strength to both enamel and dentin of the total-etch adhesive and the self-etching adhesives decreased after the specimens were subjected to thermocycling. 2. XE3 achieved the highest bond strength to both enamel and dentin (26.994+/-1.17 and 25.22+/-1.26, respectively). 3. XE3 showed even better bonding after thermocycling to enamel and dentin than the total-etching system or PP. 4. Although PP bonded to enamel showed lower shear bond strength value than XE3, it has durable bond strength even after thermocycling. Descriptors Composite Resins, Dental Bonding, Dental Enamel, Dental Etching/methods, Dental Stress Analysis, Dentin, Dentin-Bonding Agents, Hot Temperature, Humans, Polymethacrylic Acids, Resin Cements, Shear Strength, Smear Layer Links Book Title Database Publisher Data Source Authors El-Araby,A. M., Talic,Y. F. Original/Translated Title URL Date of Electronic 20070201 PMCID Editors
Risk indicators for increased periodontal probing depth in subjects attending a public dental school in Brazil	2011	Department of Dental Clinics, Federal University of Rio de Janeiro, Brazil. carinabogho@hotmail.com	Read more...
Source Type Print(0) Ref Type Journal Article Periodical, Full Oral health & preventive dentistry Periodical, Abbrev. Oral Health.Prev.Dent. Pub Date Free Form Volume 9 Issue 3 Start Page 289 Other Pages 299 Notes JID: 101167768; ppublish Place of Publication England ISSN/ISBN 1602-1622; 1602-1622 Accession Number PMID: 22068186 Language eng SubFile Journal Article; Research Support, Non-U.S. Gov't; D; IM DOI 22338 [pii] Output Language Unknown(0) PMID 22068186 Abstract PURPOSE: To assess the prevalence, extent and severity of periodontal probing depth (PD) and their association with sociodemographic and behavioural parameters in subjects attending a public dental school in Brazil. MATERIALS AND METHODS: Five hundred and fifty-nine consenting participants (18 to 77 years of age) were submitted to full-mouth periodontal clinical examination and anamnesis questionnaires. The data were analysed by multivariable models using logistic regression analyses. The dependent variables were moderate (>/= 5 mm in >/= 10% of sites) and deep (>/= 7 mm in at least one site) PD. RESULTS: The prevalence of individuals with at least one site with PD >/= 5 mm or >/= 7 mm was 69% and 54%, respectively. Mean PD ranged from 2.86 to 3.08 mm, and the mean frequency of sites with moderate and deep PD ranged from 10.74% to 14.99%, and from 4.60% to 5.36%, respectively, according to age. Multivariate analyses identified a higher risk for having PD >/= 5 in >/= 10% of sites and 7 mm in at least one site in smokers (odds ratio [OR] = 10.56 and 9.10, respectively), and the presence of >10% of sites with bleeding on probing (BOP) (OR = 6.37 to 20.91, and 6.94 to 26.19, respectively). Age 36 to 50 years (OR = 1.95) and >50 years (OR = 3.15), presence of >30% of sites with supragingival biofilm (SB) (OR = 2.80), and >/= 4 missing teeth (OR = 2.26) were risk indicators for PD >/= 7 mm in at least one site. CONCLUSION: This particular Brazilian population presented high prevalence and extent of increased periodontal probing depth. Age, smoking, BOP, SB, and tooth loss were risk indicators associated with probing depth in these individuals. Descriptors Links Book Title Database Publisher Data Source Authors Silva-Boghossian,C.M., Luiz,R., Colombo,A.P. Original/Translated Title URL Date of Electronic PMCID Editors
Effects of phosphoric acid pretreatment and substitution of bonding resin on bonding effectiveness of self-etching systems to enamel	2007	Department of Dental Materials and Operative Dentistry, University of Oeste de Santa Catarina, Joacaba, SC, Brazil.	Read more...
Source Type Print(0) Ref Type Journal Article Periodical, Full The journal of adhesive dentistry Periodical, Abbrev. J.Adhes.Dent. Pub Date Free Form Dec Volume 9 Issue 6 Start Page 537 Other Pages 545 Notes LR: 20121115; JID: 100888552; 0 (Clearfil SE Bond); 0 (Composite Resins); 0 (Dentin-Bonding Agents); 0 (Filtek Z250); 0 (Phosphoric Acids); 0 (Prompt L-Pop); 0 (Resin Cements); 0 (Scotchbond Multi-Purpose); 0 (Tyrian SPE); E4GA8884NN (phosphoric acid); pp Place of Publication England ISSN/ISBN 1461-5185; 1461-5185 Accession Number PMID: 18265711 Language eng SubFile Journal Article; Research Support, Non-U.S. Gov't; D DOI Output Language Unknown(0) PMID 18265711 Abstract PURPOSE: To examine the etching efficacy of three self-etching systems to unconditioned enamel and to phosphoric-acid conditioned enamel using scanning electron microscopy (SEM), and to investigate the microtensile bond strength (muTBS) of three self-etching adhesives to unconditioned enamel used according to the manufacturers' instructions, on phosphoric-acid conditioned enamel, and when their different adhesives were replaced with a control resin after etching. MATERIALS AND METHODS: Clearfil SE Bond (CSE), Tyrian SPE/One-Step Plus (TY), and Adper Prompt L-Pop (AD) were employed. Scotchbond Multi-Purpose Plus (SBMP), an etch-and-rinse adhesive, was used as control. For muTBS evaluation, the buccal or lingual mid-coronal enamel of 30 molars was used. In the first group, self-etching adhesives were applied conventionally, according to manufacturers' directions (group C). A second group of specimens was etched with 35% phosphoric acid before application of the self-etching adhesives (group PA), and the third group of specimens was etched with the self-etching adhesives, rinsed, but bonded using a control bonding resin (group CR). Following restoration with Z250, they were sectioned into beams (0.8 mm2), and stressed to failure. Data were subjected to two-way ANOVA and Tukey's test. The etching efficacy of the self-etching adhesives, phosphoric acid, and prior phosphoric acid + SE application was evaluated under SEM. RESULTS: All self-etching adhesives applied as recommended by the manufacturers showed lower muTBS values than those obtained in PA and CR groups, although this difference was only significant for TY and AD. The means of all self-etching adhesives under PA and CR groups were similar to SBMP. The enamel conditioned with self-etching adhesive showed a less distinct pattern. CSE exhibited the mildest etching pattern. All self-etching adhesives applied after phosphoric acid exhibited a more retentive etching pattern. CONCLUSION: The bond strength values of low-pH self-etching adhesives can be improved by the adjunctive use of phosphoric acid or replacement of the bonding resin. Descriptors Acid Etching, Dental, Composite Resins/chemistry, Dental Bonding, Dental Enamel/ultrastructure, Dentin-Bonding Agents/chemistry, Humans, Materials Testing, Microscopy, Electron, Scanning, Phosphoric Acids/chemistry, Resin Cements/chemistry, Stress, Mechanical, Surface Properties, Tensile Strength Links Book Title Database Publisher Data Source Authors Rotta,M., Bresciani,P., Moura,S. K., Grande,R. H., Hilgert,L. A., Baratieri,L. N., Loguercio,A. D., Reis,A. Original/Translated Title URL Date of Electronic PMCID Editors
A comparison of surface roughness and composite/enamel bond strength of human enamel following the application of the Nd:YAG laser and etching with phosphoric acid	1997	Department of Dental Medicine and Surgery, University Dental Hospital, Manchester, United Kingdom.	Read more...
Source Type Print(0) Ref Type Journal Article Periodical, Full Dental materials : official publication of the Academy of Dental Materials Periodical, Abbrev. Dent.Mater. Pub Date Free Form Jan Volume 13 Issue 1 Start Page 51 Other Pages 55 Notes LR: 20131121; JID: 8508040; 0 (Composite Resins); 0 (Phosphoric Acids); 0 (Resin Cements); 129037-92-9 (Brilliant Dentin resin); 130037-96-6 (Pekalux); 2I87U3734A (Neodymium); E4GA8884NN (phosphoric acid); ppublish Place of Publication UNITED STATES ISSN/ISBN 0109-5641; 0109-5641 Accession Number PMID: 9467323 Language eng SubFile Comparative Study; Journal Article; D DOI Output Language Unknown(0) PMID 9467323 Abstract OBJECTIVES: This study was conducted to evaluate enamel morphology after laser etching and acid etching and to determine the shear bond strength of composite to acid-etched and laser-treated enamel. METHODS: Enamel from freshly extracted permanent molar teeth was subjected to either laser treatment with an Nd:YAG laser in different laser parameters or was exposed to 37% phosphoric acid for 60 s (Gluma Gel, Bayer Dental). Surface profile analysis of the enamel was undertaken with a Perthometer (S8P, Feinpruif). The results were analyzed by SPSS/PC multiple range test and Student-Newman Keuls procedure. Specimens were examined in a scanning electron microscope (SEM). Shear bond strengths of acid-etched and laser-etched enamel/composite (Brilliant Dentin, Coltene AG and Pekalux, Bayer Dental) were also determined. These results were compared by SPSS/PC multiple range test. RESULTS: The acid-etched specimens exhibited a qualitatively different type of enamel surface morphology when compared with the laser-treated specimens. Laser treatment at higher exposures resulted in the formation of microcracks and fissures. No significant difference in surface roughness was observed between laser-treated enamel in three different parameters (10 pps, 0.8 W; 15 pps, 1.0 W; 20 pps, 1.25 W) and acid-etched specimens. However, the mean bond strengths of all laser-treated specimens, regardless of the test parameters, were significantly lower (p < 0.05) than the acid-etched enamel specimens. SIGNIFICANCE: Although the laser roughened the surface of the enamel, it did not provide a surface as retentive as a surface treated with conventional acid etching. It is concluded from this study that the Nd:YAG laser operated under the conditions described cannot be recommended as a viable alternative to acid etching. Descriptors Acid Etching, Dental, Composite Resins, Dental Bonding/methods, Dental Enamel/drug effects/radiation effects/ultrastructure, Evaluation Studies as Topic, Humans, Lasers/adverse effects, Materials Testing, Microscopy, Electron, Scanning, Neodymium, Phosphoric Acids/pharmacology, Resin Cements, Surface Properties/drug effects/radiation effects, Tensile Strength Links Book Title Database Publisher Data Source Authors Ariyaratnam,M. T., Wilson,M. A., Mackie,I. C., Blinkhorn,A. S. Original/Translated Title URL Date of Electronic PMCID Editors

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