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- Abrahamsson, Cecilia, et al.
(author)
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Alterations of temporomandibular disorders before and after orthognathic surgery
- 2007
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In: Angle orthodontist. - : Angle Orthodontist. - 0003-3219 .- 1945-7103. ; 77:4, s. 729-734
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Research review (other academic/artistic)abstract
- OBJECTIVE: To answer the question whether orthognathic surgery does affect the prevalence of signs and symptoms of temporomandibular disorders (TMDs). MATERIALS AND METHODS: A literature survey in the PubMed and Cochrane Library electronic databases was performed and covered the period from January 1966 to April 2006. The inclusion criteria were controlled, prospective or retrospective studies comparing TMDs before and after orthognathic surgery in patients with malocclusion. There were no language restrictions, and three reviewers selected and extracted the data independently. The quality of the retrieved articles was evaluated by four reviewers. RESULTS: The search strategy resulted in 467 articles, of which 3 met the inclusion criteria. Because of few studies with unambiguous results and heterogeneity in study design, the scientific evidence was insufficient to evaluate the effects that orthognathic surgery had on TMD. Moreover, the studies had problems with inadequate selection description, confounding factors, and lack of method error analysis. CONCLUSION: To obtain reliable scientific evidence, additional well-controlled and well-designed studies are needed to determine how and if orthognathic surgery alters signs and symptoms of TMD.
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| 5. |
- Abrahamsson, Cecilia
(author)
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Masticatory function and temporomandibular disorders in patients with dentofacial deformities : studies before and after orthodontic and orthognathic treatment
- 2013
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Doctoral thesis (other academic/artistic)abstract
- Ca 30 % av Sveriges befolkning genomgår någon gång i livet behandling med tandreglering. I de fall där bettavvikelsen är mer omfattande är enbart tandreglering inte tillräckligt för att uppnå ett bra bett. Istället kombinerar man tandregleringen med en kirurgisk förflyttning av käkarna s.k. ortognat kirurgi. Dessa patienter besväras ofta, före behandling, av smärta och funktionsstörningar i käkar och tuggmuskler och är dessutom ofta missnöjda med sitt utseende. Då denna behandling är omfattande, kostsam och inte helt utan komplikationer är det av stort intresse att undersöka utfallet av behandlingen och om denna motsvarar förväntningarna hos patienterna.Tidigare studier som har utvärderat utfallet av tandreglering i kombination med ortognat kirurgi har kommit fram till motsägelsefulla slutsatser vad gäller hur behandlingen har påverkat förekomsten av smärta och funktionsstörningar i käkar och tuggmuskulatur.Det övergripande syftet med denna avhandling är att i en serie studier, före och efter ortognat kirurgi, utvärdera och jämföra före- komsten av smärta och käkfunktionsstörningar hos patienter med stora bettavvikelser.Avhandlingen är baserad på följande studier:delarbete I är en systematisk litteraturöversikt med följande frågeställning:Påverkar ortognat kirurgi förekomsten av smärta och funktionsstörningar i käkleder och tuggmuskulatur?I studien utvärderas den tillgängliga vetenskapliga litteraturen ur ett evidensbaserat perspektiv. Översikten omfattade tidsperioden januari 1966 till april 2006 och utökades senare till maj 2013.Slutsatser i delarbete I• Det finns ett otillräckligt vetenskapligt underlag för om förekomsten av diagnostiserad smärta och funktionsstörning i käkleder och tuggmuskler minskar efter ortognat kirurgi• Det vetenskapliga underlaget är begränsat när det gäller en minskning av palpationsömhet i tuggmuskler efter ortognata kirurgi.• Det finns ett otillräckligt vetenskapligt underlag för om förekomsten av käkledsljud påverkas av ortognat kirurgi.• Det behövs ytterligare en studier som är av hög eller medelhög kvalitet för att på ett evidensbaserat sätt kunna styrka behandlingsutfallet av ortognat kirurgi när det gäller smärta och funktionsstörningar i käkleder och tuggmuskler.delarbetena II och III är kontrollerade studier som undersöker förekomsten av smärta och funktionsstörningar i käkleder och tuggmuskler hos patienter med stora bettavvikelser, i jämförelse med personer med eller utan små bettavvikelser (ej i behov av tandreg- lering). Patienterna var remitterade för behandling med ortognat kirurgi. I delarbete III, som är en longitudinell uppföljningsstudie, analyseras hur förekomsten av smärta och funktionsstörningar i käkleder och tuggmuskler påverkas av behandlingen och även hur patienttillfredsställelsen är tillgodosedd.Slutsatser i delarbete II och III• Patienter som ska behandlas med ortognat kirurgi har mer smärta och funktionsstörningar i käkleder och tuggmuskler jämfört med kontrollgruppen.• Patienter som genomgått ortognat kirurgi har ett positivt behandlingsutfall avseende smärta från käkleder och tuggmuskler.• Efter behandling är förekomsten av smärta och funktionsstörningar i käkleder och tuggmuskler låg och i nivå med den i kontrollgruppen.Delarbete IV utvärderar den självupplevda tuggförmågan och den testade tuggprestationen före och efter ortognat kirurgi hos samma individer som i studie II och III.Slutsatser i delarbete IV• Patienter med stora bettavvikelser har innan ortognat kirurgi en sämre självupplevd tuggförmåga och testad tuggprestation jämfört med kontrollgruppen.• Efter behandling förbättras både den självupplevda tuggförmågan och tuggprestationen.Klinisk betydelse:Patienter som har stora bettavvikelser och dessutom smärta och funktionsstörningar i käkleder och tuggmuskler har oftast ett positivt behandlingsutfall efter ortognat kirurgi. Dessutom förbättras den självupplevda tuggförmågan och den testade tuggprestationen efter behandlingen. Patienter med stora bettavvikelser som ska behandlas med tandreglering i kombination med ortognat kirurgi kan därför rekommenderas behandlingen för möjlighet till minskade besvär från tuggmuskler och käkleder och förbättrad tuggförmåga.
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- Abrahamsson, Cecilia, et al.
(author)
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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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In: European Journal of Orthodontics. - : Oxford University Press. - 0141-5387 .- 1460-2210. ; 37:1, s. 67-72
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Journal article (peer-reviewed)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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| 7. |
- Abrahamsson, Cecilia, et al.
(author)
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TMD before and after correction of dentofacial deformities by orthodontic and orthognathic treatment
- 2013
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In: International Journal of Oral and Maxillofacial Surgery. - : Elsevier. - 0901-5027 .- 1399-0020. ; 46:6, s. 752-758
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Journal article (peer-reviewed)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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| 8. |
- Abrahamsson, Cecilia, et al.
(author)
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TMD in consecutive patients referred for orthognathic surgery
- 2009
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In: Angle orthodontist. - : The Angle Orthodontist (EH Angle Education & Research Foundation). - 0003-3219 .- 1945-7103. ; 33:4, s. 201-226
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Journal article (peer-reviewed)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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| 9. |
- Berlin, Cecilia, et al.
(author)
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Keyword mingling workshop : a method for identifying and consolidating industrially perceived needs and requirements of future operators
- 2012
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In: Swedish Production Symposium, SPS12. - 9789175197524
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Conference paper (peer-reviewed)abstract
- Investments into the technology of the future require a firm basis in the needs of production industry. However, gathering, sorting and ranking cross-industrial future needs remains a steep challenge to technology developers. Gathering feedback from just one or a few case companies can result in a biased set of priorities, since feedback from specific industrial sectors may often be highly influenced by their industry- and product-specific challenges. The workshop method presented in this paper resolves this by using a highly interactive "mingling" technique to get participants in a large group workshop (between 15 - 20 people) to answer a specific question. The participants discuss ideas in smaller groups, share their findings to the group at large, co-operatively organize the input from all participants into functional categories, and finally perform a 'ranking' of the results. The outcome is a prioritized list of concerns to focus research efforts on, providing workshop analysts with a finished structure for reporting the results. The method was tested in two workshops within the project "The Operator of the Future" and resulted in plenty of positive feedback from participants, who felt that the input was relevant, well-structured, and easy to agree with due to the consensus categorizing.
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| 10. |
- Berlin, Cecilia, 1981, et al.
(author)
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Keyword Mingling workshop - a method for identifying and consolidating industrially perceived needs and requirements of future operators
- 2012
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In: Swedish Production Symposium, SPS12. - 9789175197524
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Conference paper (peer-reviewed)abstract
- Investments into the production technology of the future require a firm basis in the needsof production industry. However, gathering, sorting and ranking cross-industrial futureneeds remains a steep challenge to technology developers. Gathering feedback from justone or a few case companies can result in a biased set of priorities, since feedback fromspecific industrial sectors may often be highly influenced by their industry- and productspecificchallenges. This paper describes a structured method called “Keyword Mingling”that addresses the collection of such feedback in a multi-partner workshop format.The workshop method presented in this paper resolves this by using a highly interactive"mingling" technique to get participants in a large group workshop (between 15 - 20people) to answer a specific question. The participants discuss ideas in smaller groups,share their findings to the group at large, co-operatively organize the input from allparticipants into functional categories, and finally perform a 'ranking' of the results. Theoutcome is a prioritized list of concerns to focus research efforts on, providing workshopanalysts with a finished structure for reporting the results. The method was tested in twoworkshops within the project "The Operator of the Future" and resulted in plenty ofpositive feedback from participants, who felt that the input was relevant, well-structured,and easy to agree with due to the consensus categorizing.
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