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Sökning: swepub > Malmö universitet > Engelska > Göteborgs universitet > (2001-2004)

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  • Petersson, Gunnel H, et al. (författare)
  • Comparing caries risk factors and risk profiles between children and elderly.
  • 2004
  • Ingår i: Swedish dental journal. - 0347-9994. ; 28:3, s. 119-28
  • Tidskriftsartikel (refereegranskat)abstract
    • The aims of this study were to compare the caries risk profiles of children and elderly, the actual annual caries increment and the impact of some selected caries related factors. Another aim was to find out if there were gender differences among the participants. The risk profiles were created by a computerised risk assessment program, the Cariogram, which evaluates data and presents the weighted and summarized result as one figure, illustrating the ‘percent chance of avoiding caries’ in the future. Methods: The Cariogram was earlier evaluated in two longitudinal studies for its capacity to assess caries risk. One study comprised about 400 children, 10-11 years of age and the other study included about 150 elderly (age 55, 65 and 75). At baseline, information on past caries experience, diet, oral hygiene and use of fluoride was obtained. Saliva analyses included mutans streptococci and lactobacilli, buffering capacity and secretion rate. The caries risk was assessed and the participants were divided into five groups according to the calculated Cariogram risk profiles. After two and five years, respectively, caries was re-evaluated and the incidence was compared with the predictions. Results: The Cariogram risk predictions were statistically in agreement with the actual caries increment. Fifty percent of the children, but only two percent of the elderly appeared in the lowest caries risk group. Of the elderly, 26.4% belonged to the highest caries risk group versus 3.1% of the children. The median value ‘chance of avoiding caries’ was 44% for the elderly and 80% for the children. The main Cariogram sectors contributing to the observed higher caries risk among elderly was the bacterial components in combination with higher susceptibility. Individual factors contributing significantly to the higher risk profiles for the adults compared to the children were higher plaque scores, higher counts of mutans streptococci and lower buffering capacity. Conclusion: comparing the risk profiles of the children and the elderly showed that the elderly were at a higher risk developing caries lesions. Overall one may say that the risk for caries, as assessed by the Cariogram, was twice as high for the elderly.
  • Stenport, Victoria Franke, et al. (författare)
  • Failure to induce supracrestal bone growth between and around partially inserted titanium implants using bone morphogenetic protein (BMP): an experimental study in dogs.
  • 2003
  • Ingår i: Clinical oral implants research. - 0905-7161. ; 14:2, s. 219-25
  • Tidskriftsartikel (refereegranskat)abstract
    • The effect of bone morphogenetic protein on supracrestal bone growth around partially inserted implants in a dog model is described. The lower premolar teeth (P1, P2, P3 and P4) were extracted on both sides of the mandible in six dogs. At a surgical exposure 12 weeks later, two 10-mm turned titanium implants were partially inserted, approximately 15 mm apart, in the areas of the P1 and P3 in each side of the mandible, allowing five threads to protrude from the bone crest. A titanium mesh was fastened to the coronal aspect of the two fixtures and the space beneath the mesh was filled with bone morphogenetic protein (S300 BMP) in combination with an insoluble bone matrix carrier, or with the carrier alone. The mesh was covered with an ePTFE membrane. Thus, a space for potential bone formation was created between the two implants. The surgical flaps were coronally positioned and secured with vertical mattress sutures. After 16 weeks of healing, biopsy specimens were retrieved and examined histologically. Bone was not formed around the protruding implants or in the created space between the implants in any case. The carrier was incompletely resorbed. We conclude that supracrestal bone growth beyond the crestal limit with or without BMP in such a large space as in this experimental design may not be possible.
  • Hammerlid, Eva, et al. (författare)
  • A prospective study of quality of life in head and neck cancer patients. Part I: at diagnosis
  • 2001
  • Ingår i: Laryngoscope. - Lippincott Williams & Wilkins. - 1531-4995. ; 111:4 Pt 1, s. 669-680
  • Tidskriftsartikel (refereegranskat)abstract
    • PURPOSE: A Swedish and Norwegian study was designed to examine health-related quality of life (HQL) in patients with head and neck cancer (head and neck) at diagnosis and during treatment and rehabilitation. The overall aim was to examine the impact on HQL at diagnosis depending on tumor location, stage, sex, and age (part I) and to describe HQL longitudinally and determine for which patients and during which period HQL deteriorated most (part II). This article presents the results at diagnosis. METHOD: Patients with head and neck cancer at five hospitals in Sweden and Norway were consecutively requested to participate. They were asked to answer the EORTC QLQ-C30 and QLQ-H&N35 (the European Organization for Research and Treatment of Cancer, Core 30 questionnaire and head and neck cancer module) repeatedly during 1 year. A total of 357 patients (mean age, 63 y; 72% males) were included. RESULTS: Patients with different tumor locations all had their special problems at diagnosis, for example, those with tumors in the larynx with communication, those with oral tumors with pain, and those with pharyngeal tumors with nutrition and pain. The patients with hypopharyngeal cancer reported the worst HQL. Stage appeared to have the strongest impact on HQL. Patients with a more advanced tumor stage reported significantly worse HQL scores for 24 of 32 variables reflecting functioning or problems. The females scored worse than the males for some areas, in particular, emotional functioning. The older patients scored significantly better for emotional and social functioning than patients <65 years but worse for physical functioning and various symptoms. The traditional way of grouping the tumor locations into oral, pharyngeal, laryngeal, and "other" tumors (salivary gland, sinus and nose, and unknown primary) was tested from a HQL point of view and found to be consistent. CONCLUSIONS: The chosen questionnaires differentiated between different sites of head and neck cancer at diagnosis. Tumor stage had the most powerful impact on HQL score.
  • Arvidsson, Anna, 1973-, et al. (författare)
  • Characterisation of structures in salivary secretion film formation. An experimental study with atomic force microscopy
  • 2004
  • Ingår i: Biofouling. ; 20:3, s. 181-8
  • Tidskriftsartikel (refereegranskat)abstract
    • The purpose of the present study was to characterise the structure dynamics of pure salivary secretions retained on controlled surfaces with different surface energies in the early stage of salivary film formation. Germanium prisms prepared to have either low surface energy of medium surface energy were incubated in fresh secretions of either human parotid saliva (HPS) or human submandibular/sublingual saliva (HSMSLS) for 15,90 and 180 min. After controlled rinsing with distilled water, the surfaces were air dried and thereafter imaged with atomic force microscopy (AFM). The amount of adsorbed material and the size of the structures detected increased with increased saliva exposure time. the film thicknesses varied from 10 to 160 nm, and both HPS and HSMSLS films contained structures with diameters varying from 40 nm to 2 microm. Some of these were clustered into special formations. The HPS films exhibited a more granular morphology than the HSMSLS films. Furthermore, branched lines were detected on the low surface energy germanium prisms incubated in saliva. the results indicate that exposure time, surface energy, and type of salivary secretion all are factors affecting the adsorption characteristics of salivary films.
  • Cooper, Al, et al. (författare)
  • ). Predicting the future of internet sex: Online sexual activities in Sweden
  • 2003
  • Ingår i: Sexual and Relationship Therapy. ; 18, s. 277-291
  • Tidskriftsartikel (refereegranskat)abstract
    • This is the first large-scale study of Internet sexuality conducted outside the USA. The questionnaire was administered in the Swedish language and utilized responses from one of the most popular portals (Passagen) in Sweden. Responses from 3,614 people were analysed, with a gender distribution of 55% males and 45% females. This is exactly the same percentages as found in the overall use of the Internet in Sweden (Nielsen/Net Ratings, January, 2002) and participation by females allowed for a more detailed examination of their involvement in online sexual activities. A factor analysis found that there were two major and coherent factors that accounted for over one-third of the variance for all participants. These were called 'Seeking partners', and 'Accessing erotica'. The article details several ways these factors were influenced by gender and age. These results also provided corroboration for several important patterns of OSA reported in earlier studies. Sweden might be an especially fortuitous place to do this type of research as the pervasiveness and acceptance of Internet usage is higher than in the USA, and among the highest in the world. It was postulated that these findings might provide an indication of how OSA might evolve in other societies as their populations increasingly spend time online.
  • Götrick, B, et al. (författare)
  • Oral pilocarpine for treatment of opioid-induced oral dryness in healthy adults.
  • 2004
  • Ingår i: Journal of dental research. - 0022-0345. ; 83:5, s. 393-7
  • Tidskriftsartikel (refereegranskat)abstract
    • Pilocarpine induces a profuse flow of saliva when administered orally, but effects on drug-induced oral dryness have not been examined. The aim of this trial was to investigate if pilocarpine increases production of saliva in individuals suffering from dry mouth due to treatment with opioids. Sixtyfive individuals were enrolled in a randomized, double-blind, placebo-controlled trial. The subjects received tramadol (50 mg t.d.s.) to induce oral dryness, and were thereafter assigned to one of three groups. Secretion rate of saliva was measured before and after tramadol, and after the oral administration of pilocarpine (5 mg), placebo, or no treatment. Baseline characteristics did not differ among the groups (mean ± SEM: 0.37 ± 0.06 mL/min), and tramadol lowered the secretion at the same level in all groups (0.15 ± 0.02 mL/min). Pilocarpine increased the flow above that observed with placebo (0.66 ± 0.19 vs. 0.15 ± 0.02 mL/min). Thus, pilocarpine re-establishes the flow of saliva in the state of tramadol-induced oral dryness.
  • Götrick, Bengt, et al. (författare)
  • The xerogenic potency and mechanism of action of tramadol inhibition of salivary secretion in rats.
  • 2004
  • Ingår i: Archives of oral biology. - 0003-9969. ; 49:12, s. 969-73
  • Tidskriftsartikel (refereegranskat)abstract
    • Tramadol is a centrally acting analgesic with weak opioid agonist properties, which also has monoaminergic activity, exerted via inhibition of neuronal uptake of serotonin and norepinephrine. Tramadol is generally well tolerated and the most common adverse events are nausea, dizziness, drowsiness, sweating, vomiting and dry mouth. Currently it was examined by which principal mechanism tramadol induces oral dryness. The effects of intravenous administration (+/-)-tramadol were studied in rats on the flow of saliva in response to a peripheral cholinergic stimulus or to reflex activation involving the relay of impulses in the central nervous system. In pentobarbitone-anaesthetized rats, the salivary secretion to acetylcholine (0.1-10 micromol/kg IV) was increased by up to 110% by tramadol (1-5 mg/kg IV) and the protein concentration therein by up to 400%. The administration alpha- and beta-adrenoceptor antagonists resulted in almost identical acetylcholine-evoked responses as in the absence of tramadol. The secretory response to the application of citric acid on the tongue of the rat was reduced by 38% and by 64%, respectively, at 5 and 10 mg/kg IV of tramadol (p < 0.05-0.01). Thus, tramadol exerts its principal xerogenic effect by activating inhibitory pathways in the central nervous system and has no anticholinergic effect on the salivary glands at dosages that may be clinically relevant. Furthermore, the tramadol-induced increase of the acetylcholine-evoked secretion occurred at a glandular level and depended most likely on a release of noradrenaline from glandular nerve terminals.
  • Johansson, Anders, et al. (författare)
  • Associations between social and general health factors and symptoms related to temporomandibular disorders and bruxism in a population of 50-year-old subjects.
  • 2004
  • Ingår i: Acta odontologica Scandinavica. - 0001-6357. ; 62:4, s. 231-7
  • Tidskriftsartikel (refereegranskat)abstract
    • The aim of this epidemiological study was to examine associations between temporomandibular (TMD)-related problems and variables from three domains: (1) socio-economic attributes, (2) general health and health-related lifestyle, and (3) dental attitudes and behaviors. The overall response rate to a questionnaire mailed to the total population of 50-year-old subjects in two Swedish counties (8,888 individuals) was 71 %. Among the 53 questions in the questionnaire, those related to social, general health, and health-related factors were used as independent variables in logistic regression models. Three TMD-related symptoms and reported bruxism were used as dependent variables. Impaired general health was the strongest risk factor for reported TMD symptoms. Along with female gender and dissatisfaction with dental care, impaired general health was significantly associated with all three TMD symptoms. A few more factors were associated with pain from the TMJ only. In comparison, reported bruxism showed more significant associations with the independent variables. In addition to the variables associated with TMD symptoms, being single, college/university education, and daily tobacco use were also significantly correlated with bruxism. Besides female gender, impaired general health, dissatisfaction with dental care, and a few social and health-related factors demonstrated significant associations with TMD symptoms and reported bruxism.
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