bluuebunny/crossref_metadata_2025_split huggingface dataset:
A systematic review of prospective studies on attention problems and academic achievement
Authors: Polderman T. J. C. , Boomsma D. I. , Bartels M. , Verhulst F. C. , Huizink A. C. 
Published: May 2010

Polderman TJC, Boomsma DI, Bartels M, Verhulst FC, Huizink AC. A systematic review of prospective studies on attention problems and academic achievement.Objective:  Our aim was to provide an overview of prospective studies that have addressed the association between attention problems (AP, i.e. symptoms of hyperactivity and inattentiveness) and academic achievement (AA).Method:  We conducted a systematic search in the literature. Normal population studies and clinical studies were included. The methodological quality of each study was evaluated by objective criteria. A best evidence synthesis was used to determine the strengths of the association.Results:  Sixteen studies were included. We found convincing evidence for a negative association between AP and AA. After controlling for intelligence, comorbidity, and socioeconomic status (SES), the association between the hyperactive symptoms of AP and AA was non‐significant in two studies.Conclusion:  Children with AP are at risk for lower AA and subsequent adverse outcomes later in life. Interventions in affected children should focus on their behavioural and educational development.
Are multi family groups appropriate for patients with first episode psychosis? A 5‐year naturalistic follow‐up study
Authors: Rossberg J. I. , Johannessen J. O. , Klungsoyr O. , Opjordsmoen S. , Evensen J. , Fjell A. , Haahr U. , Joa I. , Langeveld J. , Larsen T. K. , Melle I. , Rund B. R. , Simonsen E. , Ten Velden W. , Vaglum P. , Friis S. , McGlashan T. 
Published: May 2010

Rossberg JI, Johannessen JO, Klungsoyr O, Opjordsmoen S, Evensen J, Fjell A, Haahr U, Joa I, Langeveld J, Larsen TK, Melle I, Rund BR, Simonsen E, ten Velden W, Vaglum P, Friis S, McGlashan T. Are multi family groups appropriate for patients with first episode psychosis? A 5‐year naturalistic follow‐up study.Objective:  To compare outcome over 5 years for patients who participated in multi family groups (MFGs) to those who refused or were not offered participation.Method:  Of 301 first episode psychotic patients aged 15–65 years, 147 participated in MFGs. Outcome was measured by drop‐out rates, positive and negative syndrome scale (PANSS) symptom scores, and duration of psychotic episodes during the follow‐up period.Results:  Multi family group participants had a significantly lower drop‐out rates at 5‐year follow‐up than patients who did not participate. However, the MFG participants had significantly less improvement in PANSS positive and excitative symptoms and had significantly longer duration of psychotic symptoms during the follow‐up period.Conclusion:  Multi family groups appear to increase the chance of retaining patients in a follow‐up study, but adjustment of the programme may be necessary with first episode psychosis patients to meet their needs better.
Metameric effect between natural teeth and the shade tabs of a shade guide
Authors: Corcodel Nicoleta , Helling Stephan , Rammelsberg Peter , Hassel Alexander J. 
Published: May 2010

Corcodel N, Helling S, Rammelsberg P, Hassel AJ. Metameric effect between natural teeth and the shade tabs of a shade guide. Eur J Oral Sci 2010; 118: 311–316. © 2010 The Authors. Journal compilation©2010 Eur J Oral SciThe objective of this study was to evaluate metameric effects, that is, the dependence of the colours of teeth and shade tabs on the illuminant used. The colours of 49 teeth of 37 participants and of the corresponding shade tabs of the 3D‐Master (VITA Zahnfabrik; colour match ΔEab< 2) were measured using an intra‐oral spectrophotometer (VITA Easyshade). Spectral reflectance data (from 400 to 700 nm) were recorded. Commission Internationale de l’Éclairage (CIE) L*a*b* values were calculated for D65 (reference daylight), A (incandescent light), and TL84 (store/office light) as reference illuminants. A modified metamerism index (Mod‐M) and hue‐angle ratios were calculated to express differences between tooth and tab colour relative to the difference observed under D65 illumination. The Mod‐M for teeth and tabs was greater than unity (indicating a greater colour difference relative to D65) by 57.1% for A and by 49.3% for TL84. Hue‐angle ratios of teeth and tabs using the test illuminants were different from those obtained using the standard illuminant D65. If teeth and shade tab matching is conducted using daylight illumination, the colour difference may not be the same under other lighting conditions, leading to perceptible, or even unacceptable, colour differences under these conditions.
Treatment of deep caries lesions in adults: randomized clinical trials comparing stepwise vs. direct complete excavation, and direct pulp capping vs. partial pulpotomy
Authors: Bjørndal Lars , Reit Claes , Bruun Gitte , Markvart Merete , Kjældgaard Marianne , Näsman Peggy , Thordrup Marianne , Dige Irene , Nyvad Bente , Fransson Helena , Lager Anders , Ericson Dan , Petersson Kerstin , Olsson Jadranka , Santimano Eva M. , Wennström Anette , Winkel Per , Gluud Christian 
Published: May 2010

Bjørndal L, Reit C, Bruun G, Markvart M, Kjældgaard M, Näsman P, Thordrup M, Dige I, Nyvad B, Fransson H, Lager A, Ericson D, Petersson K, Olsson J, Santimano EM, Wennström A, Winkel P, Gluud C. Treatment of deep caries lesions in adults: randomized clinical trials comparing stepwise vs. direct complete excavation, and direct pulp capping vs. partial pulpotomy. Eur J Oral Sci 2010; 118: 290–297. © 2010 The Authors. Journal compilation©2010 Eur J Oral SciLess invasive excavation methods have been suggested for deep caries lesions. We tested the effects of stepwise vs. direct complete excavation, 1 yr after the procedure had been carried out, in 314 adults (from six centres) who had received treatment of a tooth with deep caries. The teeth had caries lesions involving 75% or more of the dentin and were centrally randomized to stepwise or direct complete excavation. Stepwise excavation resulted in fewer pulp exposures compared with direct complete excavation [difference: 11.4%, 95% confidence interval (CI) (1.2; 21.3)]. At 1 yr of follow‐up, there was a statistically significantly higher success rate with stepwise excavation, with success being defined as an unexposed pulp with sustained pulp vitality without apical radiolucency [difference: 11.7%, 95% CI (0.5; 22.5)]. In a subsequent nested trial, 58 patients with exposed pulps were randomized to direct capping or partial pulpotomy. We found no significant difference in pulp vitality without apical radiolucency between the two capping procedures after more than 1 yr [31.8% and 34.5%; difference: 2.7%, 95% CI (−22.7; 26.6)]. In conclusion, stepwise excavation decreases the risk of pulp exposure compared with direct complete excavation. In view of the poor prognosis of vital pulp treatment, a stepwise excavation approach for managing deep caries lesions is recommended.
Caries outcomes after orthodontic treatment with fixed appliances: do lingual brackets make a difference?
Authors: Van Der Veen M. H. , Attin R. , Schwestka‐Polly R. , Wiechmann D. 
Published: May 2010

van der Veen MH, Attin R, Schwestka‐Polly R, Wiechmann D. Caries outcomes after orthodontic treatment with fixed appliances: do lingual brackets make a difference? Eur J Oral Sci 2010; 118: 298–303.©2010 The Authors. Journal compilation © 2010 Eur J Oral SciOrthodontic treatment with fixed appliances is considered a risk factor for the development of white spot caries lesions (WSL). Traditionally, brackets are bonded to the buccal surfaces. Lingual brackets are developing rapidly and have become more readily available. Buccal surfaces are considered to be more caries prone than lingual surfaces. Furthermore, lingual brackets are shaped to fit the morphology of the teeth and seal almost the entire surface. In the present study we tested the hypothesis that lingual brackets result in a lower caries incidence than buccal brackets. We tested this hypothesis using a split‐mouth design where subjects were allocated randomly to a group receiving either buccal or lingual brackets on the maxillary teeth and the alternative bracket type in the mandible. The results indicate that buccal surfaces are more prone to WSL development, especially when WSL existed before treatment. The number of WSL that developed or progressed on buccal surfaces was 4.8 times higher than the number of WSL that developed or progressed on lingual surfaces. When measured using quantitative light‐induced fluorescence (QLF), the increase in integrated fluorescence loss was 10.6 times higher buccally than lingually. We conclude that lingual brackets make a difference when caries lesion incidence is concerned.
Intracellular Ca2+ responses and cell volume regulation upon cholinergic and purinergic stimulation in an immortalized salivary cell line
Authors: Aure Marit H. , Røed Asbjørn , Galtung Hilde Kanli 
Published: May 2010

Aure MH, Røed A, Kanli Galtung H. Intracellular Ca

2+

responses and cell volume regulation upon cholinergic and purinergic stimulation in an immortalized salivary cell line. Eur J Oral Sci 2010; 118: 237–244. © 2010 The Authors. Journal compilation © 2010 Eur J Oral Sci The water channel aquaporin 5 (AQP5) seems to play a key role in salivary fluid secretion and appears to be critical in the cell volume regulation of acinar cells. Recently, the cation channel transient potential vanilloid receptor 4 (TRPV4) was shown to be functionally connected to AQP5 and also to cell volume regulation in salivary glands. We used the Simian virus 40 (SV40) immortalized cell line SMG C10 from the rat submandibular salivary gland to investigate the effect of ATP and the neurotransmitter analogue carbachol on Ca2+ signalling and cell volume regulation, as well as the involvement of TRPV4 in the responses. We used fura‐2‐AM imaging, cell volume measurements, and western blotting. Both carbachol and ATP increased the concentration of intracellular Ca2+, but no volume changes could be measured. Inhibition of TRPV4 with ruthenium red impaired both ATP‐ and carbachol‐stimulated Ca2+ signals. Peak Ca2+ signalling during hyposmotic exposure was significantly decreased following inhibition of TRPV4, while the cells’ ability to volume regulate appeared to be unaffected. These results show that in the SMG C10 cells, simulation of nervous stimulation did not induce cell swelling, although the cells had intact volume regulatory mechanisms. Furthermore, even though Ca2+ signals were not needed for this volume regulation, TRPV4 seems to play a role during ATP and carbachol stimulation.
Towards a better understanding of dental anxiety and fear: cognitions vs. experiences
Authors: Armfield Jason M. 
Published: May 2010

Armfield JM. Towards a better understanding of dental anxiety and fear: cognitions vs. experiences. Eur J Oral Sci 2010; 118: 259–264. © 2010 The Author. Journal compilation © 2010 Eur J Oral Sci Traumatic dental experiences are associated with dental anxiety and fear. However, many people with no dental fear have had negative dental experiences, and some people with considerable fear fail to recall any traumatic incidents. This study aimed to determine whether dental fear was better explained by experiences or by cognitive perceptions of going to the dentist as being uncontrollable, unpredictable, dangerous, and disgusting. A random sample of 1,084 Australian adults (response rate = 71.7%) completed a mailed questionnaire with measures of dental fear, perceptions of going to the dentist, and dental experiences. Perceptions of uncontrollability, unpredictability, dangerousness, and disgustingness had strong bivariate associations with scores on the Index of Dental Anxiety and Fear (IDAF‐4C). Vulnerability‐related perceptions accounted for 46.3% of the variance in IDAF‐4C scores beyond that accounted for by demographic variables and five possible dental experiences comprising intense pain, considerable discomfort, gagging, fainting, and having a personal problem with the dentist. In contrast, dental experiences accounted for < 1% of the variance in IDAF‐4C scores beyond that accounted for by the four cognitive perceptions. Perceptions of uncontrollability, unpredictability, dangerousness, and disgustingness were superior predictors of dental fear compared with negative dental experiences.
Susceptibility locus for non‐syndromic cleft lip with or without cleft palate on chromosome 10q25 confers risk in Estonian patients
Authors: Nikopensius Tiit , Birnbaum Stefanie , Ludwig Kerstin U. , Jagomägi Triin , Saag Mare , Herms Stefan , Knapp Michael , Hoffmann Per , Nöthen Markus M. , Metspalu Andres , Mangold Elisabeth 
Published: May 2010

Nikopensius T, Birnbaum S, Ludwig KU, Jagomägi T, Saag M, Herms S, Knapp M, Hoffmann P, Nöthen MM, Metspalu A, Mangold E. Susceptibility locus for non‐syndromic cleft lip with or without cleft palate on chromosome 10q25 confers risk in Estonian patients. Eur J Oral Sci 2010; 118: 317–319. © 2010 The Authors. Journal compilation © 2010 Eur J Oral Sci Non‐syndromic cleft lip with or without cleft palate (NSCL/P) is one of the most common birth defects and has a multifactorial etiology that includes both genetic and environmental factors. Recently, two novel susceptibility loci and three suggestive loci for NSCL/P were identified by a genome‐wide association scan (GWAS) in a German population with subsequent independent replication in a mixed European population. The aim of the present study was to investigate whether these newly detected loci confer similar effects in the North‐East European Baltic population. A total of 101 NSCL/P patients and 254 controls from Estonia were included. A significant association was observed for rs7078160 (P = 0.0016) at chromosome 10q25, which confirms the association of this locus with NSCL/P in the Baltic population. No significant association was found for the other four loci, a result that may have been attributable to the limited power of the sample.
Accuracy of Virtually Planned and Template Guided Implant Surgery on Edentate Patients
Authors: Pettersson Andreas , Komiyama Ai , Hultin Margareta , Näsström Karin , Klinge Björn 
Published: May 2010

ABSTRACTPurpose: Scientific evidence regarding the accuracy of implants placed into patients by the aid of a surgical template is limited. The objective of the present study was to verify if any variation exists between virtually planned implants' position using a computer, compared with the subsequently clinically placed implants with the aid of a surgical template in the mandible and the maxilla.Material and Methods: A total number of 25 edentate jaws were treated with the aid of a surgical template. In total, 139 implants were inserted. Fifty implants were inserted in the mandible and 89 in the maxilla. A voxel‐based registration method was used to match two separate cone‐beam computed tomography scans of the patients. The implant positions were calculated and compared between the planned implants and the implants' clinical position after more than 1 year after surgery. The results included the linear differences in distance at the level of the hex, the apex, and the depth. The angular differences were presented in degrees.Results: Statistical results indicated some factors with significant deviations. The greatest errors were found when comparing between patients moving during the computed tomography scans and those that did not move. The results showed significant divergence at the level of the hex and apex of the implants.Conclusion: The hypothesis was rejected, as the statistical results indicated that there were significant differences between virtually planned implants' position and the final position of implants placed clinically.
Cone Beam Computed Tomographic Measurement of Maxillary Central Incisors to Determine Prevalence of Facial Alveolar Bone Width ≥2 mm
Authors: Nowzari Hessam , Molayem Shervin , Chiu Ching Hsiu Ketty , Rich Sandra K. 
Published: May 2010

ABSTRACTBackground: The initial thickness of maxillary bone has significant impact on the responding level of facial bone and soft tissue after extraction and immediate implant placement. A prevailing notion is that following implant placement in fresh extraction sites, at least 2 mm of facial bone is needed to prevent soft tissue recession, fenestration, and dehiscence.Purpose: The purpose of this study was to use cone beam computed tomography (CBCT) to measure horizontal width of facial alveolar bone overlying healthy maxillary central incisors and to determine prevalence of bone thickness ≥2 mm.Materials and Methods: Tomographic data from 101 randomly selected patients were evaluated by two independent observers. Assessments were made of facial bone width at levels 1.0 to 10.0 mm apical to the bone crest.Results: Healthy maxillary central incisors (n = 202) were measured from 101 patient scans. The percent of teeth with facial bone ≥2 mm at levels 1, 2, 3, 4, and 5 mm from the bone crest was 0, 1.5, 2.0, 3.0, and 2.5%, respectively. Overall mean thickness of the bone was 1.05 mm for right and left central incisors combined. The range of individual measurements for all levels was 0 to 5.1 mm. The occurrence of ≥2 mm thickness bone measurements increased with increasing depth. However, mean widths observed at levels 6 to 10 mm from the crest ranged only 1.0 to 1.3 mm because of apparent fenestration occurrence (0 mm bone) in approximately 12% of teeth. Overall, no significant differences in bone thickness were found between ethnic, gender, age, or scan groups.Conclusions: Using CBCT, occurrences of ≥2 mm maxillary facial alveolar bone were found on no more than 3% of root surfaces 1.0 to 5.0 mm apical to the bone crest in this sample of maxillary central incisors. The study evidenced prevalence of a thin facial alveolar bone (<2 mm) that may contribute to risk of facial bone fenestration, dehiscence, and soft tissue recession after immediate implant therapy.
Long‐distance Dispersal of Invasive Grasses by Logging Vehicles in a Tropical Dry Forest
Authors: Veldman Joseph W. , Putz Francis E. 
Published: May 2010

ABSTRACTPredicting responses of vegetation to environmental factors in human‐altered tropical ecosystems requires an understanding of the controls on plant population expansion across landscapes (i.e., long‐distance dispersal) as well as of factors affecting recruitment at local scales (i.e., microsite conditions). We studied the roles of light availability, habitat type, soil disturbance, and seed dispersal in a selectively logged forest in lowland Bolivia where the exotic forage grass Urochloa (Panicum) maxima is abundant on roads and log landings but does not invade felling gaps or unlogged forest. Shade‐house trials and seed addition experiments with U. maxima revealed that this C4 grass thrives in high light but also grows in partial shade (10% full sun, but not 1% full sun), and that felling gaps, but not undisturbed forest, are suitable for grass establishment. To determine if seed dispersal by logging vehicles explains the discrepancy between actual and potential grass recruitment sites, we collected grass seeds that fell from trucks onto log landings located long distances (>500 m) from established grass populations. Trucks dispersed an estimated 1800 alien grass seeds per log landing during the early dry season; automobiles also transported seeds of grass (135 seeds/vehicle). The seeds collected (and relative abundances) were the exotics U. (Panicum) maxima (97%) and Urochloa (Brachiaria) brizantha (2%), and the pan‐tropical weeds Sorghum halapense (1%) and Rottboellia cochinchinensis (0.2%). Grasses invade this forest where disturbance coincides with seed dispersal by motor vehicles, while dispersal limitation apparently prevents invasion of many sites otherwise suitable for grass recruitment (i.e., felling and natural gaps).
Evaluation of microleakage of root canal fillings irradiated with different output powers of erbium, chromium:yttrium‐scandium‐gallium‐garnet laser
Authors: Özer Senem Yiğit , Basaran Emine 
Published: May 2010

AbstractThis study evaluated the root canal seal achieved by irradiation with an erbium, chromium:yttrium‐scandium‐gallium‐garnet laser, and the optimal output power to remove debris and the smear layer were determined. One hundred mandibular premolar teeth were prepared and divided into four groups. Group 1 was not lased but was irrigated with 5 mL of 5.25% NaOCl and 5 mL of 17% ethylenediaminetetraacetic acid. Group 2 was irradiated at a panel setting of 1 W, group 3 at 2 W and group 4 at 2.5 W, with a 50% water level and 48% air‐cooling level. Root canals were obturated by cold lateral compaction, and apical microleakage was measured using a fluid filtration model. The remaining debris and smear layer were evaluated via scanning electron microscopy. Statistically significant differences were detected between groups. Irradiation at 1 and 2 W using an erbium, chromium:yttrium‐scandium‐gallium‐garnet laser produced a seal superior to that of the other treatments.
Monozygotic twins with idiopathic internal root resorption: A case report
Authors: Urban Daniel , Mincik Jozef 
Published: May 2010

AbstractThis study presents the first case of internal root resorption in monozygotic twins. Genetic factors have been implicated in the development of root resorption lesions. The link between interleukin (IL)‐1 gene polymorphism and root resorption had been reported. However, these studies have involved external root resorption. Twin healthy 17 year old Caucasian sisters were diagnosed with internal root resorption in their upper left central incisor. Neither had a history of orofacial trauma and neither had received orthodontic treatment. The presence of IL‐1β+C3953 allele is the sign of predisposed susceptibility to an exaggerated inflammatory response, including a limited feedback mechanism as a consequence of IL‐1RN mutation. Most investigators agree that the listed polymorphism presents a significantly higher risk for development of pathological resorption. These were thought to be cases of true idiopathic resorption as none of the other factors related to root resorption was found.
Disposal of heavy metal‐contaminated sediment from Ulsan Bay, South Korea: treatment processes and legal framework
Authors: Oh Seok‐Young , Cha Soo‐Won , Kim Ick‐Hyun , Lee Hyun‐Woo , Kang Seung‐Goo , Choi Sol‐Ji 
Published: May 2010

AbstractThe effectiveness of two different management schemes to dispose of heavy metal‐contaminated sediments from Ulsan Bay, South Korea, soil washing and solidification/stabilization, were evaluated through a series of analyses. NaOH proved to be an effective washing reagent for As, extracting 75% of the As in sediment samples. EDTA was found to significantly enhance the extraction of Cu, Pb and Zn. However, complete removal of any metals was not achieved even after application of 100 mM concentrations of washing reagents. Therefore, a solidification/stabilization technique was applied to dredged sediment samples using ordinary Portland cement (1–40%) and fly ash (∼20%). Solidified sediments did not release meaningful amount of the metals via leaching tests. Our results suggest that solidification/stabilization is a better option for effective disposal of heavy metal‐contaminated sediments than soil washing. A legal framework for the treatment of hazardous wastes and contaminated soils in Korea is discussed.