bluuebunny/crossref_metadata_2025_split huggingface dataset:
The Effect of Ultrasound on Bone Dimensional Changes Following Extraction: A Pilot Study
Authors: Kerr Eric N. , Mealey Brian L. , Noujeim Marcel E. , Lasho David J. , Nummikoski Pirkka V. , Mellonig James T. 
Published: February 2008

Background: Because of bone resorption following tooth extraction, preservation of adequate bony dimension is performed often for subsequent treatment with dental implants. This study evaluated a novel, non‐invasive treatment using ultrasound to accelerate healing following extraction to minimize alveolar bone loss. The objective of this study was to evaluate the effect of ultrasound on the dimensional healing changes of alveolar bone following tooth extraction using cone‐beam volumetric tomography (CBVT).Methods: This randomized, split‐mouth trial involved 12 subjects requiring extraction of two contralateral erupted permanent teeth. Baseline CBVT scans were captured 7 to 10 days following extraction, after which time ultrasound therapy commenced in test sites. Ultrasound therapy was delivered for 20 minutes using a piezoelectric transducer for 10 sessions over the subsequent 4 weeks. Follow‐up radiographic scans were obtained at 4 weeks and 3 months postextraction. Analyses of variance and covariance were performed to assess dimensional changes over the 3‐month healing period.Results: Analysis of dimensional changes in all measures of vertical height and horizontal width demonstrated no statistically significant differences between the ultrasound and control groups from baseline to 3 months postextraction. Evaluation of correlations between dimensional changes demonstrated a moderately strong correlation (r = 0.67; P = 0.023) in the ultrasound group between the change in buccal vertical height and the baseline crestal ridge width. Analysis of the change in buccal vertical height relative to baseline crestal width demonstrated a statistically significant benefit to ultrasound compared to control (P = 0.016). This benefit was more pronounced in wider sockets compared to narrow sockets.Conclusions: In this pilot study, there was no significant benefit to ultrasound in absolute bony dimensional changes following tooth extraction. There was a significant interaction between the treatment rendered (ultrasound versus control) and the change in buccal ridge height relative to baseline ridge width at the crest and 3 mm apical to the crest. This benefit was apparent in wide sockets compared to narrow sockets; however, the clinical importance of these relative dimensional changes in the ultrasound group are difficult to determine given the inclusion of all tooth types in a pilot study with a small sample size.
Effect of Meloxicam and Diclofenac Sodium on Peri‐Implant Bone Healing in Rats
Authors: Pablos Alethéia B. , Ramalho Saturnino A. , König Bruno , Furuse Cristiane , de Araújo Vera C. , Cury Patricia R. 
Published: February 2008

Background:This study evaluated the effects of diclofenac sodium and meloxicam on peri‐implant bone healing.Methods:Thirty male rats were divided into three groups: the control group (CG) received no drug; the diclofenac sodium group (DSG) received 1.07 mg/kg twice a day for 5 days; and the meloxicam group (MG) received 0.2 mg/kg daily for 5 days. A screw‐shaped titanium implant was placed in the tibia. Fluorochromes, oxytetracycline (OxT), calcein (CA), and alizarin (AL), were injected at 7, 14, and 21 days, respectively, after implantation, and the animals were sacrificed 28 days after implant placement. The percentages of OxT‐, CA‐, and AL‐labeled bone as well as the percentages of bone‐to‐implant contact (BIC), cortical bone area (CBA), and trabecular bone area (TBA) within the implant threads were evaluated.Results:Bone healing was delayed in the DSG during the first 14 days after implant placement (OxT‐labeled bone: DSG: 5.3% ± 7.3% versus CG: 13.2% ± 9.8%,P= 0.002, and versus MG:14.4% ± 13.1%,P= 0.05). The percentages of BIC (DSG: 49.6% ± 21.9%; MG: 67.1% ± 22.8%; and CG: 68.1% ± 22.8%) and CBA (DSG: 63.7% ± 21.2%; MG: 82.7% ± 12.4%; CG: 84.9% ± 10.6%) were lower in the DSG compared to the MG and CG (P<0.001). The percentage of TBA was significantly greater in the DSG compared to the MG and CG (DSG: 36.3% ± 21.2% versus MG: 17.3% ± 12.7% and versus CG: 15.1% ± 10.6%;P<0.001).Conclusion:Diclofenac sodium seemed to delay peri‐implant bone healing and to decrease BIC, whereas meloxicam had no negative effect on peri‐implant bone healing.
Root Cementum May Modulate Gene Expression During Periodontal Regeneration: A Preliminary Study in Humans
Authors: Gonçalves Patricia F. , Lima Liana L. , Sallum Enilson A. , Casati Márcio Z. , Nociti Francisco H. 
Published: February 2008

Background: Previous data demonstrated that root cementum may affect periodontal regeneration. As such, this study aimed to explore further possible mechanisms involved in this process by investigating in humans whether root cementum modulates gene expression in the regenerating tissue formed under membrane‐protected intrabony defects.Methods: Thirty subjects with deep intrabony defects (≥5 mm; 2‐ or 3‐wall) were selected and assigned to the control or test group. The control group received scaling and root planing with the removal of granulation tissue and root cementum; the test group underwent removal of granulation tissue and soft microbial deposits by cleaning the root surface with a microbrush and saline solution, aiming at cementum preservation. Guided tissue regeneration (GTR) was applied to both groups. Twenty‐one days later, the newly formed tissue under the membrane was assessed for the expression of the following genes: alkaline phosphatase (ALP), osteopontin (OPN), osteocalcin (OCN), platelet‐derived growth factor‐alpha (PDGFA), bone sialoprotein (BSP), and basic fibroblast growth factor (bFGF).Results: Data analysis demonstrated that mRNA levels for PDGFA, BSP, and bFGF were higher in the sites where root cementum was kept in place compared to the sites where root cementum was removed completely as part of the periodontal therapy (P <0.05); in contrast, OCN levels were lower (P <0.05). No difference for ALP or OPN was observed between the control and test groups (P >0.05).Conclusion: Root cementum may modulate the expression of growth and mineral‐associated factors during periodontal regeneration.
Implant Placement at the Time of Maxillary Molar Extraction: Treatment Protocols and Report of Results
Authors: Fugazzotto Paul A. 
Published: February 2008

Background: Implant placement at the time of maxillary molar extraction presents a number of potential benefits to patients. A technique to predictably attain implant placement in ideal positions was reported previously.Methods: A total of 391 rough‐surface implants were placed in 386 patients at the time of maxillary molar extraction. Concomitant regenerative therapy was performed as necessary. Implants were followed for up to 75 months with a mean follow‐up of 40.3 months.Results: A total of 389 of 391 implants were functioning successfully for up to 75 months with a cumulative survival rate of 99.5%. Criteria for determining implant morphology and dimension are presented.Conclusion: Implant placement at the time of maxillary molar extraction with concomitant regenerative therapy as needed and subsequent restoration is a predictable treatment modality.
Periodontal Health, Quality of Life, and Smiling Patterns – An Exploration
Authors: Patel Ruchir R. , Richards Philip S. , Inglehart Marita R. 
Published: February 2008

Background: This study explored whether periodontal health/disease affects psychosocial outcomes in smiling patterns of particular subjects and their smile‐related quality of life.Methods: We collected data from 21 regularly scheduled patients in a periodontal graduate student clinic (four males and 17 females; average age: 50.38 years; age range: 24 to 82 years). The subjects were videotaped while watching a funny television (TV) program. Two independent raters rated each videotape at 31 predetermined time points to assess four aspects of the objective smiling patterns of the subjects. In addition, the subjects responded to a questionnaire to assess their smile‐related quality of life. Provider ratings and chart review data were used to assess the clinically assessed oral health status of the subjects.Results: The smile‐related quality of life of the subjects correlated significantly with indicators of the periodontal health of the subjects, such as the number of mobile teeth (r = 0.681; P =0.000), missing teeth (r = 0.784; P = 0.001), and gingival recession in the esthetic zone (r = 0.718; P = 0.001). Periodontal health and smiling patterns also were correlated. The more teeth with probing depths between 4 and 6 mm the subjects had, the less widely they opened their mouths when they smiled (r = −0.468; P = 0.032); the more hypermobile teeth the subjects had, the less open their smiles were (r = −0.442; P = 0.045) and the more likely they were to cover their mouths when they smiled (r = 0.517; P = 0.017); and the more sites of gingival recession in the esthetic zone the subjects had, the fewer teeth they showed when they smiled (r = −0.491; P = 0.028).Conclusions: The periodontal health of the subjects affects their smiling patterns and their smile‐related quality of life. Poor periodontal health may prevent adults from expressing positive emotions which, in turn, can impact their self‐concept as well as their social interactions.
Job satisfaction in Serbian health care workers who work with disabled patients
Authors: Jovic-Vranes Aleksandra , Vesna Bjegovic , Boris Vranes , Natasa Milic 
Published: February 2008

AbstractThe study was undertaken to assess job satisfaction among health care workers (HCWs) who work with disabled patients and to identify the factors that contribute to their job satisfaction. This was a cross-sectional study conducted at nine rehabilitation centers in Serbia. The study sample consisted of doctors, nurses, physiotherapists, and other HCWs (social workers, work and speech therapists, and psychologists). A self-administrated questionnaire was distributed to 170 HCWs. Chi square testing and multivariate logistic regression analyses were applied. The response rate was 97.1% (165/170). Overall job satisfaction was reported by 22.4% of the respondents and was associated with hospital politics (odds ratio [OR], 4.16; 95% confidence interval [CI], 1.13–15.30], personal relationships (OR, 13.96; 95% CI, 4.07–47.92) and the feeling of being able to provide a good quality of care (OR, 5.24; 95% CI, 1.62–16.99). Profession, age, and gender did not affect job satisfaction. In conclusion, the results show very low job satisfaction among HCWs. Improving contributing factors may lead to higher job satisfaction and a better quality of health care.
Risk factors in a patient with fungemia caused by fluconazole-resistant Candida albicans
Authors: Kaya Ayse , Yucel Muhterem , Yucel Istemi 
Published: February 2008

Abstract
Blood stream infections due to Candida species are becoming increasingly important causes of morbidity and mortality in hospitalized patients. Risk factors that predispose patients to developing invasive Candida infections have been documented as, iatrogenic and/or nosocomial conditions and immunosuppression. In the present report, we want to emphasize the risk factors that predispose individuals to the development of candidemia, particularly those that are relevant to our patient. We describe a female patient with diabetes mellitus who had been receiving glucocorticoids for 20 years as replacement therapy for hypopituitarism resulting from hypophysis adenoma surgery. The patient received antibiotic therapy for recurrent wound infections and was hospitalized for a long time, including a period in the intensive care unit and instrumented. The patient eventually succumbed to fungemia caused by a fluconazole-resistant strain of C. albicans strain.
Retroperitoneal giant schwannoma eroding lumbal vertebra: A case report with a literature review
Authors: Sakalauskaite Marija , Stanaitis Juozas , Cepkus Saulius , Pleckaitis Mindaugas , Lunevicius Raimundas 
Published: February 2008

AbstractA huge schwannoma, located in the retroperitoneal space, is found very rarely. The main purpose of this paper is to present the case of a giant retroperitoneal schwannoma which partly invaded L4 vertebral body. The secondary purpose is to summarize the case-report articles on retroperitoneal schwannomas. A circumscribed heterogenic tumour was revealed on transabdominal sonography. It extended into the right retroperitoneal space. CT and MRI revealed a paravertebral tumour in the size of 11 cm × 9 cm, which is causing a partial lysis of L4 vertebral body (15% of vertebral capacity), expanding intravertebral foramen and filling the right retroperitoneal space. A preoperative core needle biopsy was performed and a benign schwannoma was diagnosed. A complete surgical excision of the tumour was achieved by a two-step operation. During the first step, the neurosurgeons made L4 hemilaminectomy, facetectomy and a transverse process resection by posterior extended approach. The general surgeons excised the residual retroperitoneal part of the tumour by midline transabdominal approach 10 days later. The diagnosis of benign schwannoma was verified histochemically. There were no sign of tumour recurrence or spine destabilization at the six-month follow-up. In conclusion, although majority of giant retroperitoneal schwannomas can be completely removed performing one-step operation, a preoperative consideration about rationality of two-step operation should be mandatory when tumour destructs a part of vertebral body. Our case shows that the combined two stage complete surgical excision of a giant retroperitoneal schwannoma, eroding 15% of L4 vertebra’s osseous capacity, is effective and does not have any negative influence on spinal stability.
Effects of a Single Session of Posterior-to-Anterior Spinal Mobilization and Press-up Exercise on Pain Response and Lumbar Spine Extension in People With Nonspecific Low Back Pain
Authors: Powers Christopher M , Beneck George J , Kulig Kornelia , Landel Robert F , Fredericson Michael 
Published: February 2008

Background and PurposePosterior-to-anterior (PA) mobilization and press-up exercises are common physical therapy interventions used to treat low back pain. The purpose of this study was to examine the immediate effects of PA mobilization and a press-up exercise on pain with standing extension and lumbar extension in people with nonspecific low back pain.SubjectsThe study participants were 30 adults (19 women and 11 men) who were 18 to 45 years of age and had a diagnosis of nonspecific low back pain.MethodsLumbar segmental extension during a press-up maneuver was measured by dynamic magnetic resonance imaging prior to and immediately following a single session of either PA spinal mobilization or a press-up exercise. Pain scores before and after intervention were recorded with a visual analog scale. Differences between the treatment groups in pain and total lumbar extension were compared over time by use of a 2-way analysis of variance.ResultsFollowing both interventions, there was a significant reduction in the average pain scores for both groups (significant main effect for time, no interaction). Similarly, total lumbar extension significantly increased in both the PA mobilization group and the press-up group (significant main effect for time, no interaction). No significant differences between the 2 interventions in pain or lumbar extension were found.Discussion and ConclusionThe findings of this study support the use of PA mobilization and a press-up exercise for improving lumbar extension in people with nonspecific low back pain. Although statistically significant within-group changes in pain were detected, the clinical meaningfulness of these changes is questionable.
A New Washback Model of Students’ Learning
Authors: Shih Chih-Min 
Published: February 2008

Abstract: This study investigated the washback of the General English Proficiency Test on English learning in Taiwan. The research sites were the applied foreign language departments of a university of technology and an institute of technology. The latter required day-division students to pass the first stage of the test's intermediate level or the school-administered make-up examination, whereas the former did not prescribe any General English Proficiency Test requirement. Department documents and records were reviewed, and the department chair, teachers, students, and parents or spouses of participating students were interviewed. One of the courses taught by each interviewed teacher, as well as activities in the self-study centre, were observed. Findings indicated that existing theories did not fully explain the washback of this test on educational context, so a new, tentative washback model is proposed.
Cover Picture: Direct Growth of Flexible Carbon Nanotube Electrodes (Adv. Mater. 3/2008)
Authors: Chen J. , Minett A. I. , Liu Y. , Lynam C. , Sherrell P. , Wang C. , Wallace G. G. 
Published: February 2008

AbstractEntangled networks of multiwalled carbon nanotubes (CNTs) integrated into a highly conducting carbon layer can be grown on a range of substrates including glassy carbon and metal foils. On p. 566, Gordon Wallace and co‐workers report the fabrication of a continuous flexible CNT electrode with high surface area and conductivity. The electrode demonstrates a stable battery capacity of 572 mAh g–1. This discovery provides a direct route for the generation of large‐scale flexible CNT electrode materials.
Inside Front Cover: Enzyme‐Based Multi‐Component Optical Nanoprobes for Sequence‐Specific Detection of DNA Hybridization (Adv. Mater. 3/2008)
Authors: Li J. , Song S. , Liu X. , Wang L. , Pan D. , Huang Q. , Zhao Y. , Fan C. 
Published: February 2008

AbstractA novel multicomponent gold nanoparticle (AuNP)‐based nanoprobe can be assembled from a thiolated DNA detection probe, horseradish peroxidase (HRP), and bovine serum albumin (BSA), report Shiping Song, Yun Zhao, Chunhui Fan, and co‐workers on p. 497. The DNA detection probe is employed to construct a complex for “sandwich”‐based DNA detection, the HRP translates the hybridization event into an enzymatic catalysis‐based optical signal, and BSA serves as a non‐specific blocker.
Cadmium(II)‐Catalyzed CN Cross‐Coupling of Amines with Aryl Iodides
Authors: Rout Laxmidhar , Saha Prasenjit , Jammi Suribabu , Punniyamurthy Tharmalingam 
Published: February 2008

AbstractCadmium diacetate dihydrate [Cd(OAc)2⋅2 H2O] in combination with ethylene glycol catalyzes efficiently the CN cross‐coupling of amines with aryl iodides by a benzyne mechanism. Alkyl, aryl and heterocyclic amines are compatible with this system affording the aminated products in high to excellent yield.
Expeditious and Practical Synthesis of Lycopene
Authors: Choi Eunho , Yeo Jung Eun , Koo Sangho 
Published: February 2008

AbstractOur lycopene synthesis highlights the expeditious assembly of the carbon skeleton by the use of a readily available ten‐carbon unit, geraniol, rather than the original natural five‐carbon building block, isopentenyl pyrophosphate. Furthermore, four oxidation steps by the enzyme desaturases to produce the conjugated carbon‐carbon double bonds of lycopene are merged into one‐pot double elimination reactions in our synthesis. These accomplished the highly efficient synthesis of all‐(E)‐lycopene from geraniol through a seven‐step sequence in 51% overall yield.
Efficient Preparation of the Isoindoline Framework via a Six Component, Tandem Double A3‐Coupling and [2+2+2] Cycloaddition Reaction
Authors: Bonfield E. Ryan , Li Chao‐Jun 
Published: February 2008

AbstractThe preparation of tetrasubstituted isoindolines from three alkyne units, two aldehyde units and a primary amine via three consecutive reactions, two aldehyde‐amine‐alkyne couplings (A3‐couplings) and a final [2+2+2] cycloaddition, in a single synthetic operation, is described. The A3‐couplings are catalyzed by copper bromide and the cycloaddition is catalyzed by Wilkinson’s catalyst. It was found that many catalysts known to be efficient at the cycloaddition step were not suitable when this step was part of the tandem reaction sequence. Wilkinson’s catalyst was found to be unique in its suitability for the overall domino reaction sequence.
Iron‐Catalyzed CN Cross‐Coupling of Sulfoximines with Aryl Iodides
Authors: Correa Arkaitz , Bolm Carsten 
Published: February 2008

AbstractAn inexpensive and experimentally simple, iron‐catalyzed N‐arylation reaction of NH‐sulfoximines with aryl iodides is reported. This complementary method to the known palladium‐ and copper‐catalyzed ones features the use of a combination of environmentally friendly FeCl3 and N,N′‐dimethylethylenediamine (DMEDA) as catalytic system and allows the efficient preparation of various N‐arylsulfoximines in high yields.
Vinylogous Mannich‐Type Reaction Catalyzed by an Iodine‐Substituted Chiral Phosphoric Acid
Authors: Akiyama Takahiko , Honma Yasuhiro , Itoh Junji , Fuchibe Kohei 
Published: February 2008

Abstract2‐Trimethylsiloxyfuran underwent a vinylogous Mannich‐type reaction with aldimines under the action of a new chiral phosphoric acid, bearing iodine on the 6,6′‐positions of the binaphthyl group, as a chiral Brønsted acid to give γ‐butenolide derivatives bearing an amino functionality with high diastereo‐ and enantioselectivity.
FTIR and SEM analysis of polyester‐ and epoxy‐based composites manufactured by VARTM process
Authors: Cecen Volkan , Seki Yoldaş , Sarikanat Mehmet , Tavman Ismail H. 
Published: February 2008

AbstractPolyester‐ and epoxy‐based composites containing glass and carbon fibers were manufactured using a vacuum‐assisted resin transfer molding (VARTM) process. Fourier transform infrared (FTIR) spectroscopy analyses were conducted to determine the interaction between fibers and matrix material. The results indicate that strong interaction was observed between carbon fiber and epoxy resin. However, weak interactions between remaining fiber‐matrix occur. Scanning electron microscopy (SEM) analysis was also performed to take some information about strength of interaction between fibers and matrix material. From SEM micrographs, it is concluded that the findings in SEM analysis support to that obtained in FTIR analysis. Another aim of the present work was to investigate the influence of matrix on composite properties. Hence, the strengths of composites having same reinforcement but different matrix systems in axial tension and transverse tension were compared. Short beam shear test has been conducted to characterize the interfacial strength in the composites. © 2008 Wiley Periodicals, Inc. J Appl Polym Sci, 2008