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- Abrahamsson, Cecilia, et al.
(författare)
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TMD in consecutive patients referred for orthognathic surgery
- 2009
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Ingår i: Angle orthodontist. - : The Angle Orthodontist (EH Angle Education & Research Foundation). - 0003-3219 .- 1945-7103. ; 33:4, s. 201-226
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Tidskriftsartikel (refereegranskat)abstract
- OBJECTIVE: To answer the question whether temporomandibular disorders (TMD) were more common in a group of individuals referred for orthognathic surgery than in a control group. The null hypothesis was that neither the frequency of signs and symptoms of TMD or diagnosed TMD would differ between the patient group and a control group. MATERIALS AND METHODS: A sample of 121 consecutive patients referred for orthognathic surgery at the Department of Oral Maxillofacial Surgery, Malmö University Hospital, Sweden, was interviewed and examined regarding signs and symptoms of TMD and headaches. A control group was formed by 56 age- and gender-matched individuals attending the Department of Oral Diagnosis, Faculty of Odontology, Malmö University, Sweden, and Public Dental Health Clinic in Oxie, County of Skane, Sweden. TMD diagnoses were used according to Research Diagnostic Criteria for Temporomandibular Disorders (RDC/TMD). RESULTS: The patient group showed more myofascial pain without limited opening, disc displacement with reduction, and arthralgia according to RDC/TMD than the control group. The patient group also had more symptoms and signs of TMD in general. CONCLUSIONS: The null hypothesis was rejected because patients who were to be treated with orthognathic surgery had more signs and symptoms of TMD and higher frequency of diagnosed TMD compared with the matched control group.
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| 2. |
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| 3. |
- Al-Harthy, Mohammad, et al.
(författare)
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Temporomandibular disorder pain in adult Saudi Arabians referred for specialised dental treatment
- 2010
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Ingår i: Swedish Dental Journal. - 0347-9994. ; 34:3, s. 149-158
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Tidskriftsartikel (refereegranskat)abstract
- The aim of this study was to determine the frequency of Temporomandibular Disorders (TMD) pain in Saudi Arabians,aged 20-40, who were referred to the Specialist Dental Centre in Makkah. The material included 325 patients (135 males,190 females) who answered a history questionnaire. Patients reportingTMD pain in the last month were offered a clinical examination. History questionnaires and clinical examinations were done according to the Arabic version of the Research Diagnostic Criteria for TMD (RDC/TMD). Fifty-eight patients (18%) reported TMD pain; 46 were clinically examined. Mean age of clinically examined TMD pain patients was 30 +/- 7 years with a male-female ratio of 1:6 (P < 0.001). All TMD pain patients had a diagnosis of myofascial pain, and 65% had diagnoses of arthralgia or osteoarthritis. Headaches or migraines in the last 6 months and headaches in the last month were reported in high frequencies in the TMD pain group, 93% and 71% respectively, with differences (P < 0.001) between the TMD pain and non-TMD pain groups. Graded Chronic Pain Scale assessments classified 45% of the TMD pain patients in grade 1, 53% in grade II, 2% in grade III, and 0% in grade IV. Severe depression scores were found in 38% of the TMD pain patients and severe somatisation scores in 60% with differences (P < 0.001) between the TMD pain and non-TMD pain groups. In conclusion, the study found a frequency of TMD pain in this Saudi Arabian cohort of 18%. The TMD pain group presented high scores of depression and somatisation but low disability grades on the Graded Chronic Pain Scale.
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| 5. |
- Andersson, Gunilla, et al.
(författare)
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The effect of Swedish and American smokeless tobacco extract on periodontal ligament fibroblasts in vitro
- 2006
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Ingår i: Swedish Dental Journal. - 0347-9994. ; 30:3, s. 89-97
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Tidskriftsartikel (refereegranskat)abstract
- Use of moist snuff is widespread in Sweden. In 2004 approximately 8oo,ooo Swedes were daily users which corresponds to 22% of the male population and 3% of the female population. The aim of the present study was to evaluate the effect of Swedish moist snuff extract on PDLfibroblast growth and hard tissue production and compare with moist snuff extract from USA. Periodontal ligament cells (PDL-cells) were obtained from 3 healthy subjects (1 female 14 years, 2 males 14 and 17 years) from the root surface of premolars extracted for orthodontic reasons. The cells were isolated from explants and grown in Dulbecco's Modified Eagle's Medium (DMEM) supplemented with 10% fetal calf serum (FBS) and cultivated in 37 degrees C with 5% CO2 in air. Snuff extract in concentrations 0.3%, 1% and 3% (in DMEM with 1% FBS) was tested. Cells from each individual were tested three times, each time in triplicate. Photographs were taken at o and 24 hours with a digital camera and analysed in terms of growth and morphology. Then the cell suspension was frozen and later thawed for examination of the production of alkaline phosphatase after exposure to different snuff concentrations. This in vitro study has shown that PDL cells from 3 different subjects demonstrated a reduced number of cells at exposure to 3% of both Swedish and American snuff extract.The production of alkaline phosphatase after 2 hours was similarly reduced from cells exposed to 3% snuff extract. Further studies have to be made to understand the effect of smokeless tobacco on periodontal tissues. However, from this study can be concluded that smokeless tobacco has biological effects in terms of reduced PDL cell growth and production of alkaline phosphatase
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| 6. |
- Andersson, Gunilla, et al.
(författare)
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The Influence of pH and Nicotine Concentration In Oral Moist Snuff on Mucosal Changes and Salivary pH in Swedish Snuff
- 2003
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Ingår i: Swedish Dental Journal. - 0347-9994. ; 27:2, s. 67-75
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- The use of Swedish oral moist snuff is a widespread habit in Sweden. In 1999, 25% of the adult male population and 3.1% of the female population were users of snuff. The aim of the present study was to evaluate how variations in pH and nicotine concentrations of snuff affect the oral mucosa, clinically and histologically, salivary pH and daily nicotine intake in 20 habitual users of loose snuff. The subjects were studied during use of their usual brand, after 12 weeks use of a snuff with lower pH and after another 12 weeks use of a snuff with both lower pH and lower nicotine concentration. Consumption data, oral soft tissue changes, salivary pH and nicotine intake were meas-ured. Further, biopsies were taken from the central part of the clinically observed lesions and histological changes were analysed. The subjects maintained their snuff consumption during the observation periods. The average salivary pH was higher during snuff use than in the morning. Further, it was higher shortly after the snuff was removed than during snuff use. After having switched to the snuff with both lower pH and lower nicotine concentrations, they showed a significant reduction in daily nicotine intake and developed significantly less pronounced clinical and histological changes. These results indicate that nicotine is one of the substances in snuff that has a biological effect on the oral mucosa. However, there also seems to be a synergistic effect between the pH and nicotine concentration in the snuff.
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| 7. |
- Arneryd, Philip, et al.
(författare)
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Fracture strength of low translucent and high translucent monolithic zirconia crowns with different thicknesses
- 2014
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Ingår i: Swedish Dental Journal. - : Swedish Dental Association. - 0347-9994. ; 38:4, s. 195-195
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- Objective. The aim of the study was to examine the fracture strength of fully anatomical monolithic high translucent Y-TZP, yttria-stabilized tetragonal zirconia polycrystal, crowns and to compare them with monolithic low translucent Y-TZP crowns in different thicknesses. Materials and methods. 80 standardized crowns were made out of a master model resembling a first mandibular molar made in composite material; 40 crowns made of Lava Zirconia by 3M ESPE, a monolithic low translucent Y-TZP material, and 40 crowns made of Lava Plus by 3M ESPE, a monolithic high translucent Y-TZP material. In each group ten crowns of the thicknesses 1.0 mm, 0.7 mm, 0.5 mm and 0.3 mm were made. All crowns underwent thermocycling and preload to simulate aging and normal wear. Finally the specimens were placed in a testing jig and underwent load to fracture. Results. No significant difference was found when comparing the two materials. When comparing the materials in each thickness a significant difference was found in the 0.5 mm group where the high translucent YTZ-P had a higher mean fracture strength value. A significant difference was seen between the different thicknesses within both groups. The strength increased with added thicknesses. Conclusions. The low translucent and high translucent monolithic YTZ-P perform equally well. The use of high translucent monolithic Y-TZP could result in more aesthetic results and the minimal invasive preparation could lead to a reduction in biological complications. This could be beneficial for the patient since the results suggest that even a thin restoration sustains reasonable load in an in vitro environment. Clinical studies are needed to confirm this suggestion.
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| 8. |
- Axtelius, Björn, et al.
(författare)
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Oral disease and psychosocial risk determinants in relation to self-assessments of general health in persons with chronic whiplash-related disorders
- 2003
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Ingår i: Swedish Dental Journal. - 0347-9994. ; 27:4, s. 185-195
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- The aim of this study was to analyse how self-assessed general health was related to oral health among persons afflicted with whiplash-associated disorders (WAD), controlling for relevant background factors, confounders and other risk factors. Questionnaires included the SF-36 Health Survey, self-assessed oral health and relevant risk factors, in total 49 questions. Multivariable regression modelling was performed. Members of a nationwide Swedish association enlisting persons who have problems concerning a whiplash injury (n = 1,928) were included. A total of 979 persons participated in the study, a response rate of 50.8%. A multivariable regression model is presented, with general health as the dependent variable, and the independent variables inserted en-bloc. The model was highly significant with an explained variance of 28%. Among background factors, only older age appeared as significantly and strongly related to poorer general health. The strongest explanatory contributions came from the health related variables. Oral disease and extra-oral body pain were both strongly related to poorer general health, most obviously for the oral disease variable. Oral disease was significantly and to a clinically relevant degree associated with self-assessed general health. Several other psychosocial indicators of stress were also significantly related to the general health. These findings are consistent with the stress-behaviour-immune model for development of disease.
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| 9. |
- Bahat, Zdravko, et al.
(författare)
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Fracture strength of three-unit fixed partial denture cores (Y-TZP) with different connector dimension and design
- 2009
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Ingår i: Swedish Dental Journal. - : Sveriges tandläkarförbund. - 0347-9994. ; 33:3, s. 149-159
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Tidskriftsartikel (refereegranskat)abstract
- True crystalline ceramic materials presently used in restorative dentistry are Al2O3 (alumina) and yttrium-oxide stabilised tetragonal polycrystalline zirconium-dioxide (Y-TZP). To ensure optimal clinical performance, the dimensions of the Fixed Partial Denture (FPD) framework in general and of the connectors in particular, must be adequate. Considered recommendations for connector dimensions for Y-TZP FPDs vary from 2 to 4 mm in occluso-gingival height and 2 to 4 mm in bucco-lingual width. In order to reduce the fracture probability when designing all-ceramic FPDs, the shape of the connector is an important factor to consider. The radius of curvature at the gingival embrasure plays a significant role in the load-bearing capacity. FPDs with small gingival embrasure radii are subjected to high stress concentrations in the connector area during loading, compared to FPDs with large embrasure radii. The aim of this in-vitro study was to investigate how different radii of curvature in the embrasure of the connector area and different connector dimensions could affect the fracture resistance of 3-unit all-ceramic FPDs made of Y-TZP. Forty-eight FPDs in 6 groups of 8 FPDs with different connector design were produced in Procera Zirconia Bridge material. The FPD cores were subjected to heat treatment to simulate veneering. Following cementation, the FPDs were firstly thermocycled for 5,000 cycles, then preloaded for 10,000 cycles and finally loaded to fracture. All the FPDs fractured in the connector area. All the crack propagation which led to fracture started at the gingival embrasure of the connector. Within the limitations of this in-vitro study,the recommended minimum dimension of an anterior 3-unit all-ceramic FPD of Y-TZP is 3 mm in incisal-cervical direction and 2 mm in buccal-lingual direction. By increasing the radius of the gingival embrasure from 0.6 to 0.9 mm, the fracture strength for a Y-TZP FPD with connector dimension 3 x 3 mm increases by 20%.
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| 10. |
- Bengmark, Daniel, et al.
(författare)
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Graduates' characteristics and professional situation : a follow-up of five classes graduated from the Malmö model
- 2007
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Ingår i: Swedish Dental Journal. - 0347-9994. ; 31:31, s. 129-135
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Tidskriftsartikel (refereegranskat)abstract
- Syftet med denna studie var att beskriva de examinerade från de fem första kurserna av den problembaserade tandläkarutbildningen i Malmö, deras generella syn på utbildningen och deras professionella situation. Av totalt 166 examinerade (examinerade åren 1995-1999) svarade 128 på den utskickade enkäten. Frågeformuläret inkluderade frågor av demografisk karaktär, de examinerades syn på utbildningen och deras professionella situation. De svarandes medianålder när de examinerades var 26 år (24-43 år) och andelen kvinnor var 56 %. Cirka en fjärdedel var födda utanför Sverige. Två tredjedelar av de svarande angav att de valde tandläkarutbildningen för att de ville bli tandläkare. Nästan samtliga (97 %) arbetade som tandläkare och cirka en tredjedel arbetade utanför Sverige. De som arbetade utanför Sverige var i högre utsträckning också födda utanför Sverige. De svarande menade att utbildningen gav en god förberedelse för deras professionella situation. Deras tillfredsställelse med sin professionella situation, som var hög överlag, korrelerade till deras möjligheter att påverka sin arbetssituation. Cirka en fjärdedel uttryckte intresse för specialistutbildning. När det gällde forskarutbildning uttryckte 64 % av kvinnliga svarande intresse jämfört med 42 % av männen. Vår slutsats är att de svarande överlag var nöjda med sin professionella situation och majoriteten av dem var intresserade av efter- och vidareutbildning.
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