| 1. |
- Bondemark, Lars, et al.
(författare)
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Funktionsstörningar och smärta
- 2008
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Ingår i: Tandläkartidningen. - 0039-6982. ; 100:9-10, s. 64-68
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Tidskriftsartikel (populärvet., debatt m.m.)abstract
- Orofaciala funktionsstörningar och smärta är en sammanfattning av kliniska problem och sjukdomar som involverar bett, käkar, tuggmuskulatur, käkleder och omgivande strukturer. Orsakerna är oftast multifaktoriella för de barn, ungdomar och vuxna som drabbas.
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| 2. |
- Petrén, Sofia, et al.
(författare)
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Early correction of posterior crossbite : a cost-minimization analysis
- 2013
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Ingår i: European Journal of Orthodontics. - : Oxford University Press. - 0141-5387 .- 1460-2210. ; 35:1, s. 14-21
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Tidskriftsartikel (refereegranskat)abstract
- There are few cost evaluation studies of orthodontic treatment. The aim of this study was to determine the costs of correcting posterior crossbites with Quad Helix (QH) or expansion plates (EPs) and to relate the costs to the effects. To determine which alternative has the lower cost, a cost-minimization analysis was undertaken, based on that the outcome of the treatment alternatives is identical. The study comprised 40 subjects in the mixed dentition, who had undergone treatment for unilateral posterior crossbite: 20 with QH and 20 with EPs. Duration of treatment, number of appointments, broken appointments, and cancellations were registered. Direct costs (for the premises, staff salaries, material and laboratory costs) and indirect costs (loss of income due to parent's assumed absence from work) were calculated and evaluated for successful treatment alone, for successful and unsuccessful treatment and re-treatment when required. The QH had significantly lower direct and indirect costs, with fewer failures requiring re-treatment. Even the costs for successful cases only were significantly lower in the QH than in the EP group. The results clearly show that in terms of cost-minimization, QH is the preferred method for correcting posterior crossbite in the mixed dentition.
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| 3. |
- Abdulraheem, Salem, et al.
(författare)
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The reporting of blinding in orthodontic randomized controlled trials : where do we stand?
- 2019
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Ingår i: European Journal of Orthodontics. - : Oxford Academic. - 0141-5387 .- 1460-2210. ; 41:1, s. 54-58
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Tidskriftsartikel (refereegranskat)abstract
- Objective: To analyse in 10 orthodontic journals how many randomized controlled trials (RCTs) performed 'single-', 'double-', 'triple-', or 'outcome assessors blinding' and to evaluate, from the number of RCTs that did not conduct blinding, how many could actually have achieved it. Material and methods: Randomized controlled trials published in 10 orthodontic journals between 1 September 2012 and 28 February 2018 were included. A search was performed in PubMed and conducted for publication type 'randomized controlled trial' for each journal. Two reviewers independently analysed each RCT and registered that blinding was performed and included which specific type. It was also evaluated whether misclassifications of blinding items occurred and whether it was possible to achieve blinding among the RCTs that did not perform blinding. Results: After applying the inclusion criteria, 203 RCTs were assessed, and 61.6 per cent of them had used blinding, with the main type being 'outcome assessors blinding' (40.4%) followed by 'single-blinding' (15.3%), 'double-blinding' (2.5%), and 'triple-blinding' (3.4%). In 38.4 per cent of the trials, no blinding was performed; however, 79.4 per cent of them could have achieved blinding. Fifteen RCTs (7.3%) misclassified the blinding in relation to single-, double-, or triple-blinding. Journals followed the CONSORT (AJODO, EJO, JO, OCR) published together significantly more RCTs that performed blinding than journals not following the CONSORT. Conclusions: Blinding of outcome assessors was the most frequent type, as orthodontic trials are often of intervention design and thereby difficult to mask for patients and trial staff. The misclassifications of blinding items may indicate suboptimal knowledge among researchers and peer-reviewers regarding the definitions for diverse blinding types.
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| 4. |
- Abrahamsson, Cecilia, et al.
(författare)
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Masticatory function in patients with dentofacial deformities before and after orthognathic treatment : a prospective, longitudinal, and controlled study
- 2015
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Ingår i: European Journal of Orthodontics. - : Oxford University Press. - 0141-5387 .- 1460-2210. ; 37:1, s. 67-72
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Tidskriftsartikel (refereegranskat)abstract
- OBJECTIVES: The aim of this study was to investigate the self-estimated masticatory ability and masticatory performance in patients with dentofacial deformities before and after orthognathic treatment; in comparison to an age- and gender-matched control group. SUBJECTS AND METHODS: The masticatory ability and masticatory performance were evaluated in 121 consecutive patients (treatment group), referred for orthognathic treatment. Eighteen months after treatment, 98 patients (81%) completed a follow-up examination. Masticatory ability was assessed on a visual analog scale, while the masticatory performance was evaluated by a masticatory test using round silicon tablets. Signs and symptoms of temporomandibular disorders (TMD) were registered by a clinical examination and a questionnaire. The control group comprised 56 age- and gender-matched subjects who were examined at baseline. RESULTS: At the baseline examination, the treatment group had a significantly lower masticatory ability and performance compared with the control group. After treatment, the masticatory ability significantly improved in the treatment group and reached the same level as in the control group. The masticatory performance index increased significantly but was still lower than in the control group. Both the masticatory ability and masticatory performance were affected by the number of occlusal contacts during maximal biting pressure and by the self-estimated overall symptoms of TMD. CONCLUSIONS: Patients with dentofacial deformities, corrected by orthognathic treatment, have a significant positive treatment outcome in respect of masticatory ability and masticatory performance. Furthermore, the occlusion and symptoms of TMD have an impact on both masticatory ability and masticatory performance.
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| 5. |
- Abrahamsson, Cecilia, et al.
(författare)
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TMD before and after correction of dentofacial deformities by orthodontic and orthognathic treatment
- 2013
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Ingår i: International Journal of Oral and Maxillofacial Surgery. - : Elsevier. - 0901-5027 .- 1399-0020. ; 46:6, s. 752-758
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Tidskriftsartikel (refereegranskat)abstract
- Abstract The aims of the study were to investigate the alteration of temporomandibular disorders (TMD) after correction of dentofacial deformities by orthodontic treatment in conjunction with orthognathic surgery; and to compare the frequency of TMD in patients with dentofacial deformities with an age and gender matched control group. TMD were evaluated in 121 consecutive patients (treatment group), referred for orthognathic surgery, by a questionnaire and a clinical examination. 18 months after treatment, 81% of the patients completed a follow-up examination. The control group comprised 56 age and gender matched subjects, of whom 68% presented for follow-up examination. TMD were diagnosed according to research diagnostic criteria for TMD. At baseline examination, the treatment group had a higher frequency of myofascial pain (P=.035) and arthralgia (P=.040) than the control group. At follow-up, the frequencies of myofascial pain, arthralgia and disc displacement had decreased in the treatment group (P=.050, P=.004, P=.041, respectively). The frequency of TMD was comparable in the two groups at follow-up. Patients with dentofacial deformities, corrected by orthodontic treatment in conjunction with orthognathic surgery, seem to have a positive treatment outcome in respect of TMD pain
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| 6. |
- 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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| 7. |
- Alexandersson, Gunnar, et al.
(författare)
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Coopetition between commercial and subsidized railway services : The case of the greater Stockholm region
- 2018
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Ingår i: Research in Transportation Economics. - : Elsevier. - 1875-7979 .- 0739-8859. ; 69:SI, s. 349-359
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Tidskriftsartikel (refereegranskat)abstract
- An important ingredient of the Swedish railway system is the increased involvement of public actors in the provision of local and regional railway services. The local and regional railway services show the strongest growth of all market segments in the Swedish passenger railway market. The strong growth is due both to changes in travel patterns and improved subsidized railway services. One important factor in the success of the regional public transport authorities’ (PTA) railway services is the redefinition of the scope of these railway services by interconnecting regional railway networks into bigger entities.In 2017, nearly all local and regional railway services in Sweden's most populated region, Mälardalen, became part of a network of railway services subsidized by the PTAs in the greater region. We analyse the cooperative and competitive interactions between the stakeholders in the greater region using the key concepts in the theory of hybrid organizations. We find that despite moving towards a unified public transport market covering many counties the hybrid organizations use different governance structures and have different principles for sharing value creation. The closer cooperation paradoxically enhances competition in the regional railway market, both between subsidized travel cards and between subsidized and commercial railway services.
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| 8. |
- Bjerklin, Krister, et al.
(författare)
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Management of ectopic maxillary canines : variations among orthodontists
- 2008
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Ingår i: Angle orthodontist. - : The Angle Orthodontist (EH Angle Education & Research Foundation). - 0003-3219 .- 1945-7103. ; 78:5, s. 852-859
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Tidskriftsartikel (refereegranskat)abstract
- OBJECTIVE: To document and analyze factors involved in decision-making by orthodontists in managing disturbances of eruption of maxillary canines. MATERIAL AND METHODS: The participants comprised orthodontic specialists and active members of the Swedish Orthodontic Society. Those selected for the study sample were under 65 years of age or younger and had been treating orthodontic patients for at least 1 year as a specialist. Three typical cases were presented for treatment proposals. The case notes, including radiographs and specific background data, were sent to the 182 selected orthodontists. The orthodontists were also requested to complete a questionnaire about practice profile, comprising eight questions. RESULTS: The response rate was 86.3%; yielding 157 participants (mean age 53.8 years, SD 8.12). Analysis disclosed no differences between responders and nonresponders regarding age, gender, and years of specialist practice. For treatment plans based on panoramic radiographs, intraoral radiographs, and status and anamnesis, there was general consensus. However, when supplementary information from computer tomography (CT) was provided, disclosing root resorption half-way to the pulp or more on the lateral incisor, the orthodontists' treatment proposals varied. Gender, age, and practice profile of the orthodontists had little association with the decision-making. CONCLUSIONS: Supplementary CT information led to variations in decision-making with respect to treatment of eruption disturbances of maxillary canines. This lack of consensus among specialist orthodontists can have negative implications for patients.
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| 9. |
- Bondemark, Lars, et al.
(författare)
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A Self-directed Summative Examination in Problem-based Learning in Dentistry : a New Approach
- 2004
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Ingår i: Medical teacher. - : Informa UK Limited. - 0142-159X .- 1466-187X. ; 26:1, s. 46-51
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- This paper describes and evaluates a new method of assessment in PBL, which was developed with two cohorts of dental students. The method involves students in PBL groups designing PBL problems and assessment tasks that are in line with the objectives of the course and the principles of PBL. Construction of tasks and feedback were provided. The student groups based the summative assessment on a selection of the PBL assessments provided. The evaluation indicates that senior students are capable of designing challenging PBL assessment tasks that are in line with course objectives and PBL principles. This experience raised the pass rates of the students compared those of with earlier cohorts of students. The students rated the method favourably; they considered it enabled them to demonstrate their competences and that it was more closely in line with PBL principles than other methods of assessment that they had experienced. The method is a promising innovation, which could be used in a variety of PBL courses.
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| 10. |
- Bondemark, Lars, et al.
(författare)
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Anchorage Provided during Intra-arch Distal Molar Movement : a Comparison between the Nance Appliance and a Fixed Frontal Bite Plane
- 2005
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Ingår i: Angle orthodontist. - 0003-3219 .- 1945-7103. ; 75:3, s. 437-443
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- The aim of this retrospective study was to evaluate and compare the anchorage provided with the Nance appliance (NA) and the fixed frontal bite plane (FBP) during intra-arch distal molar movement. After a sample size calculation, 20 patients were recruited and randomly selected for each group from patients who fulfilled the following criteria: use of an intra-arch Ni-Ti coil appliance with either NA or FBP to provide anchorage during a six-month molar distalization period, no orthodontic treatment before molar distalization, and first and second maxillary molars in occlusion. The outcome measures assessed were anchorage loss, ie, anterior movement of maxillary central incisors, distal movement of maxillary molars, and bite opening effect. The mean age in the NA group was 14.7 years (SD 1.09) and in the FBP group 15.0 years (SD 0.99). The data revealed that the maxillary central incisors moved anteriorly 1.4 mm in the NA group and 1.9 mm in the FBP group. The difference in anchorage loss was not significant. The mean amount of molar distalization within the maxilla was 1.7 mm in the NA group and 1.8 mm in the FBP group. In both groups, the overbite was significantly reduced and the overbite was decreased significantly more in the FBP group. Because neither the NA nor FBP provided stable anchorage, a second treatment phase is recommended to reverse the anchorage loss after distal molar movement. If molar distalization is planned in deep bite cases, the FBP is the anchorage system of choice.
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