ABSTRACT
OBJECTIVES@#To coat a zirconia surface with silica-zirconia using a dip-coating technique and evaluate its effect on resin-zirconia shear bond strength (SBS).@*METHODS@#A silica-zirconia suspension was prepared and used to coat a zirconia surface using a dip-coating technique. One hundred and eighty-nine zirconia disks were divided into three groups according to their different surface treatments (polishing, sandblasting, and silica-zirconia coating). Scanning electron microscopy (SEM), energy dispersive X-ray (EDX), and X-ray diffraction (XRD) were used to analyze the differently treated zirconia surfaces. Different primer treatments (Monobond N, Z-PRIME Plus, and no primer) were also applied to the zirconia surfaces. Subsequently, 180 composite resin cylinders (Filtek Z350) were cemented onto the zirconia disks with resin cement (RelyX Ultimate). The SBS was measured after water storage for 24 h or 6 months. The data were analyzed by two-way analysis of variance (ANOVA).@*RESULTS@#SEM and EDX showed that the silica-zirconia coating produced a porous layer with additional Si, and XRD showed that only tetragonal zirconia was on the silica-zirconia-coating surface. Compared with the control group, the resin-zirconia SBSs of the sandblasting group and silica-zirconia-coating group were significantly increased (@*CONCLUSIONS@#Dip-coating with silica-zirconia might be a feasible way to improve resin-zirconia bonding.
ABSTRACT
PURPOSE: To investigate the effect of non-thermal atmospheric pressure plasma (NTAPP) treatment on shear bond strength (SBS) between resin cement and colored zirconia made with metal chlorides. MATERIALS AND METHODS: 60 zirconia specimens were divided into 3 groups using coloring liquid. Each group was divided again into 2 sub-groups using plasma treatment; the experimental group was treated with plasma, and the control group was untreated. The sub-groups were: N (non-colored), C (0.1 wt% aqueous chromium chloride solution), M (0.1 wt% aqueous molybdenum chloride solution), NP (non-colored with plasma), CP (0.1 wt% aqueous chromium chloride solution with plasma), and MP (0.1 wt% aqueous molybdenum chloride solution with plasma). Composite resin cylinders were bonded to zirconia specimens with MDP-based resin cement, and SBS was measured using a universal testing machine. All data was analyzed statistically using a 2-way ANOVA test and a Tukey test. RESULTS: SBS significantly increased when specimens were treated with NTAPP regardless of coloring (P<.001). Colored zirconia containing molybdenum showed the highest value of SBS, regardless of NTAPP. The molybdenum group showed the highest SBS, whereas the chromium group showed the lowest. CONCLUSION: NTAPP may increase the SBS of colored zirconia and resin cement. The NTAPP effect on SBS is not influenced by the presence of zirconia coloring.
Subject(s)
Chlorides , Chromium , Molybdenum , Plasma Gases , Plasma , Resin CementsABSTRACT
Este estudo transversal objetiva aferir, por meio da análise dos dados sugeridos pela escala SBS distinguindo de forma quantitativa e qualitativa, as limitações de convívio social apresentadas por usuários de serviços substitutivos. Foram analisados 385 instrumentos aplicados a usuários de Serviços Residenciais Terapêuticos (SRT) e de Centros de Atenção Psicossocial (CAPS). Foram utilizados os 21 itens da Social Behaviour Schedule (SBS-BR). Os dados nos indicam que os indivíduos estudados apresentavam de nenhum a 15 problemas de comportamento social entre os identificados pela escala. Apresentando uma média de 2,5 problemas por usuário com um desvio padrão de 2,84. A maior parte da amostra pareceu apresentar de 1 a 2 problemas entre os passíveis de serem identificados pela escala, estando os comportamentos inespecíficos em maior proporção em ambos serviços, seguido de ataques de pânico em usuários de CAPS e problemas com aparência pessoal e de higiene em usuários de SRT. Nesse sentido, o uso de instrumentos que nos permitam aferir os dados a cerca dos aspectos sociais do indivíduo em sofrimento psíquico merece ser estimulado como forma de continuar a pesquisa nessa área, e repensar modos de efetivar a reinserção social desses sujeitos.
This cross-sectional study aims to assess through analysis of data suggested by the Social Behavior Schedule (SBS) quantitatively and qualitatively distinguishing between the limitations of social interaction presented by users of substitute services. Analyses were performed of 385 instruments applied to users of Therapeutic Residential Services (SRT) and the Centers for Psychosocial Care (CAPS). Twenty-one items from the Social Behaviour Schedule (SBS, BR). The data indicate that the individuals studied had from zero to 15 social behavior problems, with an average of 2.5 problems per service user with a standard deviation of 2.84. The majority of the sample appeared to have 1-2 problems among those identified by the scale, and the nonspecific behaviors are present in greater proportion in both services, followed by panic attacks among CAPS users and problems with personal appearance and hygiene in SRT users. In this way, the use of tools that make it possible to assess the data on the social aspects of the psychological distress deserves to be encouraged as a way to further research in this area, and rethink ways of effecting social reintegration of these individuals.
Subject(s)
Social Behavior , Community Mental Health Services , Socioeconomic Factors , Brazil , Cross-Sectional StudiesABSTRACT
We present a patient with short bowel syndrome (SBS), successfully treated with the Kampo medicine, shigyakuto-kagen. The patient was a 74 year old female complaining of severe diarrhea, abdominal distention, and abdominal pain. She was diagnosed as having tuberculous peritonitis when she 23 years of age. A partial resection of the small bowel and colon was performed for ileus, secondary to her tuberculous peritonitis, eventually causing her short bowel syndrome (SBS). Severe abdominal distention and pain had persisted even after the resection surgery. She consulted our clinic at 60 years of age in order to receive Kampo therapy. Bukuryoshigyakuto was prescribed, and her condition markedly improved. Zanthoxylum piperitum was added to bukuryoshigyakuto, and the regimen had the reactivity of daikenchuto. She regained her pre-operation body weight. It is significant that this case was followed for 14 years with therapy based on Kampo diagnosis, without remarkable complications, although patients with SBS often tend to have poor prognosis.
Subject(s)
Short Bowel Syndrome , Medicine, Kampo , PeritonitisABSTRACT
A reappraisal was made with respect to a classical observation of the mode of instrumental phase reversals on inter-ictal EEG of seemingly bilateral synchronous spike-wave discharges in patients with either idiopathic generalized epilepsies (IGE) or symptomatic localization-related frontal lobe epilepsies (FLE). It was pointed out in the original observation by Tukel and Jasper that one phase reversal at midline or near the midline on the side of the parasagittal epileptogenic lesion designated as secondary bilateral synchrony (SBS) was found in patients with frontal lobe epilepsy (FLE), whereas a double phase reversal was found over the homologous frontal electrodes (F3 and F4) designated as primary bilateral synchrony (PBS) in patients with IGE. Twenty-three patients (IGE: 15, and FLE: 8) revealing bursts of seemingly bisynchronous spike-wave discharges in interictal EEGs were retrospectively studied. Discharge patterns were defined as stable phase reversal pattern if the site of phase-reversal was consistent, and as unstable pattern if the site of phase-reversal was not consistent but shifting in the same patient. Stable one phase-reversal pattern was found more frequently in FLE (50%) than in IGE patients (26.7%), and stable double phase-reversal pattern more frequently in the IGE (33.3%) than in the FLE group (12.5%). Notably, unstable pattern was found almost equally in both IGE and FLE patients (40% and 37.5%, respectively). Recognition of SBS or PBS in accordance with original observation was found not to clearly differentiate FLE from IGE in patients showing seemingly bisynchronous spike-wave complexes. The variability of instrumental phase-reversals can be accounted for by the fact that the localization of maxima of negative spike of the spike-and-wave complexes varies considerably.
Subject(s)
Immunoglobulin E , Tidal WavesABSTRACT
This paper is toevaluate the shear bond strength(SBS)of six new dental adhesives tohuman enamel and dentin.120extracted human premaxillary teeth are randomly divided into12groups with10teeth in each.After24-hours immersion in water at37℃,all specimens are loaded in a shear mode in a tensile testing machine with a crosshead speed of10mm/min.The SBSof six adhesives toenamel are24.6?2.7,17.6?3.5,16.5?3.2,12.8?2.9,10.1?1.8and10.0?2.8Mpa for Clearfil SE Bond,Prompt L-Pop Single Bond,All Bond2,Prime&Bond and Opti Bond Sold respectively.Their SBStodentin are16.8?3.7,10.1?1.4,10.0?2.1,18.6?3.3,10.5?2.5and8.2?1.7Mpa respectively.Toenamel Clearfil SE Bond shows the highest mean SBSand Opti Bond Sold shows the lowest.Todentin the SBSof All Bond2is the highest and Opti Bond Sold is the lowest.
ABSTRACT
Objective:To compare shear bond strength(SBS)of bonded and rebonded orthodontic brackets and influence of rebonded orthodontic brackets using different treatment methods on SBS.Methods:60 extracted premolars were evenly divided into three groups.Brackets were debonded with conventional techniques and then removed of residual adhesives from the base mesh using three different treatments.In groupⅠ,rebond a new bracket at the second,third bonding times.In group Ⅱ,remove residual adhesives from the base mesh with fire at the second,third times,then rebond the same bracket.In group Ⅲ,remove that using a tungsten carbide bur at the second,third times,then rebond the same bracket.Shear test was performed to compare the SBS and adhesive remnant indexes(ARI)among different groups.Results:The SBS of three groups at the first bonding sequence were(10.00?2.95)MPa,(9.57?2.45)MPa and(9.09?2.58)MPa.The SBS at the second,third debonding sequence in group I,group II,and group III were(9.55?2.84)MPa and(10.32?2.59)MPa,(7.30?2.15)MPa and(7.14?1.93)MPa,(12.13?2.93)MPa and(12.86?3.08)MPa,respectively.In group Ⅱ,the SBS was significantly lower,however,in group Ⅲ,the SBS was significantly higher,and the results showed significant differences(P
ABSTRACT
Objective To investigate the prevalence of sick building syndrome (SBS) and explore the related risk factors in the people working in office environment in Beijing. Methods A cross-sectional study design was made in the present paper in April 2009. One hundred and two employees in 16 small and moderate offices in three different buildings in Beijing were investigated with the questionnaire for their subjective symptoms, environmental perceptions, psychosocial information and health situation. The indoor environmental factors of the buildings were monitored based on the standardized procedures at the same time. Generalized linear model and multilevel model were used for the data analysis. Results The prevalence rate of symptoms for sick building syndrome was 67.4%. The prevalence rate of SBS symptoms was positively associated with the self-feelings of the subject to high temperature, insufficient ventilation indoors, work stress, satisfaction for job and health complains, as well as with using photocopier in office by ANOVA(P