| 1. |
- Afshari, Mariam, 1989-, et al.
(författare)
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Development of an oral health-related quality of life questionnaire on neurosensory disturbances after orthognathic surgery - a pilot study.
- 2022
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Ingår i: Acta odontologica Scandinavica. - : Informa UK Limited. - 1502-3850 .- 0001-6357. ; 80:8, s. 635-640
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Tidskriftsartikel (refereegranskat)abstract
- Development of a new questionnaire, Oral Health-Related Quality of Life - Neurosensory Disturbances after Orthognathic Surgery (OHRQL-NDO), designed to measure the effects of neurosensory disturbance (NSD) on patients' oral health-related quality of life (OHRQL) and to evaluate reliability and validity of this questionnaire.A questionnaire including 11 items was constructed. Thirty patients with NSD affecting the lower lip and/or chin following orthognathic surgery were included. Convergent validity was assessed by comparing OHRQL-NDO with OHIP-14 and two global questions. Test-retest reliability was assessed by asking the patients to complete OHRQL-NDO at two different occasions with an interval of two to threeweeks.The internal consistency, measured with Cronbach's alpha, was 0.84. The test-retest reliability, measured with ICC, was 0.89 (95% CI 0.77-0.95). The correlation between the mean sum score for the OHRQL-NDO and the mean sum score for the OHIP-14 was r=0.75, using Pearson correlation coefficient. The correlations between the mean total score for the OHRQL-NDO and the global questions 1 and 2 were r=0.74 and r=0.72, respectively.The current instrument OHRQL-NDO is a promising test, but needs further development to better capture the different aspects of OHRQL. Further tests of the questionnaire must follow in other samples to finalize the instrument.
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| 2. |
- Hilon, Jack, et al.
(författare)
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Phenotype of Crohn's disease according to the Montreal classification in relation to dental health status.
- 2022
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Ingår i: Scandinavian journal of gastroenterology. - : Informa UK Limited. - 1502-7708 .- 0036-5521. ; 57:2, s. 183-189
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Tidskriftsartikel (refereegranskat)abstract
- The relationship between oral health and Crohn's disease is uncertain. Previous studies have yielded contradictory results, reflecting perhaps the different phenotypes of the disease. The aim of the present study was to describe and analyse the dental status of a group of patients with Crohn's disease (CD), considering the positions of the inflammatory loci and disease phenotype.In total, 47 patients with Crohn's disease (18 males and 30 females; mean age. 48.7years; range, 23-61years) were consecutively recruited to this study. Interviews and clinical examinations were performed to assess dental status, medication, smoking history, heredity of inflammatory bowel disease (IBD), duration of disease, oral mucosal manifestations of Crohn's disease. Furthermore, data on subjective health assessments and family status, along with medical histories from the patients were obtained through questionnaires. The disease phenotypes were assessed and classified according to the Montreal classification. The data on oral health status were first correlated with the Montreal classifications of IBD, and, thereafter, all the collected data were included in a multivariate generalised linear model.The dental status of the patients was comparable to that of the Swedish average. No statistically significant associations were found between oral status and the different CD phenotypes. However, within the Montreal classification, there were significantly fewer teeth in those patients with perianal lesions than in those without such lesions, and there was a significant correlation between deeper pocket depth and problems with strictures and penetrations. No significant differences (p=.074) between the patients with CD (N=47) and controls (N=38) were found regarding the presence of oral mucosal lesions.Dental health may be adversely affected in severe cases of CD whereas most of the remaining patients with CD appear to have a level of dental health that is comparable to that in the general population.
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| 3. |
- Kashani, Amir Hossein Navidi, et al.
(författare)
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Morphology, mechanical properties, and oxidation behavior of stoichiometric Ti0.33-xAlxB0.67 coatings (x=0.04, 0.15, 0.21, and 0.28)
- 2024
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Ingår i: Acta Materialia. - : Elsevier. - 1359-6454 .- 1873-2453. ; 270
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Tidskriftsartikel (refereegranskat)abstract
- Stoichiometric Ti0.33-xAlxB0.67 coatings with x = 0.04, 0.15, 0.21, and 0.28 were synthesized by magnetron sputtering and characterized regarding phase formation, mechanical properties, and oxidation behavior. By increasing the Al concentration from 4 to 28 at.%, the measured elastic modulus (496±19 GPa) and unit cell volume (25.646 Å3 ) decreased by 33 and 0.8 %, respectively. The Al concentration induced changes in measured elastic modulus and unit cell volume are in very good agreement with ab initio predictions, as the maximum deviations between experiment and theory, observed here, are 12 and 1.1 %, respectively. The corresponding hardness values decreased by 45 % from 22±1 to 12±1 GPa. The oxidation experiments were performed in ambient air at 700, 800, and 900 °C for 1, 4, and 8 h. Analysis by scanning transmission electron microscopy (STEM) revealed a bimodal, strongly Al concentration-dependent oxidation behavior where films containing ≤15 at.% of Al form a porous, non-passivating crystalline oxide scale containing Ti -rich as well as Al -rich oxide regions, while the formation of a passivating, dense, X-ray amorphous oxide scale was observed for films containing ≥ 21 at.% of Al. Coincident with the passive scale formation for Al concentrations ≥ 21 at.%, the elastic modulus decreases by ≥ 32.6 % compared to TiB2 and can be rationalized based on Al concentration induced bond weakening as revealed by the concomitant cohesive energy reduction of ≥ 22 %.
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| 4. |
- Kashani, Amir Hossein Navidi, et al.
(författare)
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Synthesis and oxidation behavior of Ti0.35Al0.65By (y=1.7-2.4) coatings
- 2022
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Ingår i: Surface & Coatings Technology. - : Elsevier. - 0257-8972 .- 1879-3347. ; 442
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Tidskriftsartikel (refereegranskat)abstract
- The effect of B concentration on phase formation and oxidation resistance of (Ti0.35Al0.65)By coatings with y = 1.7, 2.0, 2.4 was investigated. Elemental B targets in radio frequency mode and a compound Ti0.4Al0.6 target in direct current mode were sputtered. The B concentration was varied systematically by adjusting the applied power to the respective magnetrons, while keeping the power supplied to the magnetron with the Ti0.4Al0.6 target constant. Measured lattice parameters and elastic properties are consistent with ab initio predictions. The oxidation resistance at 700 degrees C in air for up to 8 h was compared to a cathodic arc evaporated (Ti0.37Al0.63)0.49N0.51 coating with an Al/Ti ratio of 1.69 +/- 0.20 which is very similar to 1.84 +/- 0.40 for the boride coatings. Scanning transmission electron microscopy imaging revealed oxide scale thicknesses of 39 +/- 7 and 101 +/- 25 nm for (Ti0.35Al0.65)B2.0 and (Ti0.37Al0.63)0.49N0.51 after 8 h, respectively. Hence, the close to stoichiometric diboride outperforms the nitride coating. This behavior can be understood based on composition and structure analysis of the oxide scales: While the protective layer on the diboride is primarily composed of Al and O, the porous oxide layer on the nitride coating contains Ti, Al and O.
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| 5. |
- Kashani, Amir Hossein Navidi, et al.
(författare)
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Temporally-resolved decomposition of Ti0.12Al0.21B0.67 thin films at 1000°C
- 2024
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Ingår i: Surface & Coatings Technology. - : Elsevier. - 0257-8972 .- 1879-3347. ; 487
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Tidskriftsartikel (refereegranskat)abstract
- The thermal stability of stoichiometric Ti0.12Al0.21B0.67 thin films synthesized by magnetron sputtering was investigated by vacuum annealing at 1000°C for 1 and 3 h. The as-deposited and post-annealed films were compared regarding changes in chemical composition, phase formation, and morphology. X-ray diffraction (XRD) data indicate the formation of a single-phase solid solution in the as-deposited Ti0.12Al0.21B0.67 thin film. After annealing for 1 h, scanning transmission electron microscopy (STEM), energy-dispersive X-ray mapping (EDX), and atom probe tomography (APT) investigations reveal segregation into Al- and Ti-rich (Ti,Al)B2 domains, consistent with spinodal decomposition. Furthermore, the formation of AlB12 with a concomitant reduction in Al concentration from 20.9 to 16.8 at. %, likely by evaporation, indicate the decomposition of Al-rich (Ti,Al)B2 domains during annealing for 1 h. Analysis of the film after annealing for 3 h shows evidence for continued spinodal decomposition as well as for further decomposition of Al-rich (Ti,Al)B2 domains, leading besides the formation of AlB12 to a reduction in Al concentration to 12.5 at. % by Al evaporation. The observed phase formation trend during in situ transmission electron microscopy (TEM) studies at 1100 degrees C is consistent with the above discussed decomposition processes. The here identified thermal stability limit, revealed with spatially resolved structure and composition probes, confines the application temperature range of Ti0.12Al0.21B0.67 in vacuum to temperatures <1000°C and underlines that thermal stability investigations solely based on XRD data result in an overestimated thermal stability.
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| 6. |
- Kashani, Hossein, et al.
(författare)
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Implant Rehabilitation of Alveolar Ridge Defects (Chapter 14)
- 2020
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Ingår i: Advanced Oral and Maxillofacial Implatology. Mohammad Hosein Kalantar Motamedi (Editor). - New York : Nova Science Publishers Inc. - 9781536169317
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Bokkapitel (övrigt vetenskapligt/konstnärligt)
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| 7. |
- Rasmusson, Lars, 1962, et al.
(författare)
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Orthognathic Surgery (Chapter 25a)
- 2021
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Ingår i: Nordic Textbook of Oral and Maxillofacial Surgery. - Copenhagen : Munksgaard. - 9788762820128
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Bokkapitel (övrigt vetenskapligt/konstnärligt)
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