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      Non-surgical treatment of transverse deficiency in adults using Microimplant-assisted Rapid Palatal Expansion (MARPE)

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          ABSTRACT

          Introduction:

          Maxillary transverse deficiency is a highly prevalent malocclusion present in all age groups, from primary to permanent dentition. If not treated on time, it can aggravate and evolve to a more complex malocclusion, hindering facial growth and development. Aside from the occlusal consequences, the deficiency can bring about serious respiratory problems as well, due to the consequent nasal constriction usually associated. In growing patients, this condition can be easily handled with a conventional rapid palatal expansion. However, mature patients are frequently subjected to a more invasive procedure, the surgically-assisted rapid palatal expansion (SARPE). More recently, researches have demonstrated that it is possible to expand the maxilla in grown patients without performing osteotomies, but using microimplants anchorage instead. This novel technique is called microimplant-assisted rapid palatal expansion (MARPE).

          Objective:

          The aim of the present article was to demonstrate and discuss a MARPE technique developed by Dr. Won Moon and colleagues at University of California - Los Angeles (UCLA).

          Methods:

          All laboratory and clinical steps needed for its correct execution are thoroughly described. For better comprehension, a mature patient case is reported, detailing all the treatment progress and results obtained.

          Conclusion:

          It was concluded that the demonstrated technique could be an interesting alternative to SARPE in the majority of non-growing patients with maxillary transverse deficiency. The present patient showed important occlusal and respiratory benefits following the procedure, without requiring any surgical intervention.

          RESUMO

          Introdução:

          a deficiência transversa da maxila é uma má oclusão com alta prevalência em todas as faixas etárias, da dentição decídua à permanente. Se não for corrigida, pode agravar-se com o passar do tempo, prejudicando o crescimento e desenvolvimento facial. Além dos prejuízos oclusais, essa deficiência pode trazer problemas respiratórios também severos, devido à consequente constrição da cavidade nasal. Em pacientes em crescimento, a sua resolução é relativamente simples, por meio da expansão rápida convencional da maxila. Porém, os pacientes já maduros geralmente são encaminhados para um procedimento mais invasivo, a expansão rápida de maxila assistida cirurgicamente (SARPE). Mais recentemente, pesquisadores têm demonstrado que é possível executar a expansão palatal esquelética em pacientes adultos sem auxílio de osteotomias, mas sim com auxílio de mini-implantes. Essa técnica é denominada Microimplant-Assisted Rapid Palatal Expansion, ou MARPE.

          Objetivo:

          o objetivo do presente artigo é demonstrar e discutir uma das técnicas disponíveis de MARPE, desenvolvida por Won Moon e colaboradores, na University of California, Los Angeles (UCLA).

          Métodos:

          a técnica encontra-se detalhadamente descrita, com as etapas laboratoriais e clínicas que devem ser seguidas para sua correta execução. Para descrevê-la, é apresentado o caso clínico de uma paciente adulta, detalhando toda a sequência do tratamento e os resultados obtidos.

          Conclusão:

          a técnica apresentada pode ser uma alternativa não invasiva à SARPE na resolução da deficiência transversa de maxila, podendo ser empregada na maioria dos pacientes com crescimento facial finalizado. A paciente apresentada demonstrou benefícios significativos nos aspectos oclusal e respiratório, sem a necessidade de intervenção cirúrgica.

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          Most cited references58

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          Diagnosis and management of childhood obstructive sleep apnea syndrome.

          This technical report describes the procedures involved in developing recommendations on the management of childhood obstructive sleep apnea syndrome (OSAS). The literature from 1999 through 2011 was evaluated. A total of 3166 titles were reviewed, of which 350 provided relevant data. Most articles were level II through IV. The prevalence of OSAS ranged from 0% to 5.7%, with obesity being an independent risk factor. OSAS was associated with cardiovascular, growth, and neurobehavioral abnormalities and possibly inflammation. Most diagnostic screening tests had low sensitivity and specificity. Treatment of OSAS resulted in improvements in behavior and attention and likely improvement in cognitive abilities. Primary treatment is adenotonsillectomy (AT). Data were insufficient to recommend specific surgical techniques; however, children undergoing partial tonsillectomy should be monitored for possible recurrence of OSAS. Although OSAS improved postoperatively, the proportion of patients who had residual OSAS ranged from 13% to 29% in low-risk populations to 73% when obese children were included and stricter polysomnographic criteria were used. Nevertheless, OSAS may improve after AT even in obese children, thus supporting surgery as a reasonable initial treatment. A significant number of obese patients required intubation or continuous positive airway pressure (CPAP) postoperatively, which reinforces the need for inpatient observation. CPAP was effective in the treatment of OSAS, but adherence is a major barrier. For this reason, CPAP is not recommended as first-line therapy for OSAS when AT is an option. Intranasal steroids may ameliorate mild OSAS, but follow-up is needed. Data were insufficient to recommend rapid maxillary expansion.
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            Diagnosis and management of childhood obstructive sleep apnea syndrome.

            This revised clinical practice guideline, intended for use by primary care clinicians, provides recommendations for the diagnosis and management of the obstructive sleep apnea syndrome (OSAS) in children and adolescents. This practice guideline focuses on uncomplicated childhood OSAS, that is, OSAS associated with adenotonsillar hypertrophy and/or obesity in an otherwise healthy child who is being treated in the primary care setting. Of 3166 articles from 1999-2010, 350 provided relevant data. Most articles were level II-IV. The resulting evidence report was used to formulate recommendations. The following recommendations are made. (1) All children/adolescents should be screened for snoring. (2) Polysomnography should be performed in children/adolescents with snoring and symptoms/signs of OSAS; if polysomnography is not available, then alternative diagnostic tests or referral to a specialist for more extensive evaluation may be considered. (3) Adenotonsillectomy is recommended as the first-line treatment of patients with adenotonsillar hypertrophy. (4) High-risk patients should be monitored as inpatients postoperatively. (5) Patients should be reevaluated postoperatively to determine whether further treatment is required. Objective testing should be performed in patients who are high risk or have persistent symptoms/signs of OSAS after therapy. (6) Continuous positive airway pressure is recommended as treatment if adenotonsillectomy is not performed or if OSAS persists postoperatively. (7) Weight loss is recommended in addition to other therapy in patients who are overweight or obese. (8) Intranasal corticosteroids are an option for children with mild OSAS in whom adenotonsillectomy is contraindicated or for mild postoperative OSAS.
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              THE TREATMENT OF MAXILLARY DEFICIENCY BY OPENING THE MIDPALATAL SUTURE.

              A J Haas (1965)
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                Author and article information

                Journal
                Dental Press J Orthod
                Dental Press J Orthod
                dpjo
                Dental Press Journal of Orthodontics
                Dental Press International
                2176-9451
                2177-6709
                Jan-Feb 2017
                Jan-Feb 2017
                : 22
                : 1
                : 110-125
                Affiliations
                [1 ]Post-graduation Professor of Orthodontics, Universidade Federal do Paraná, Dental School, Department of Restorative Dentistry, Curitiba/PR, Brazil.
                [2 ]Associate Professor, Universidade Federal do Rio de Janeiro, Dental School, Department of Pediatric Dentistry and Orthodontics, Rio de Janeiro/RJ, Brazil.
                [3 ]Adjunct Professor, Universidade Federal da Bahia, Dental School, Department of Orthodontics, Salvador/BA, Brazil.
                [4 ]Associate Professor, University of California, Los Angeles, Dental School, Orthodontics Area, Los Angeles/CA, EUA.
                Author notes
                Contact address: Daniel Paludo Brunetto Av. Sete de Setembro 4456, Curitiba/PR, Brasil - CEP: 80.250-210 E-mail: daniel_brunetto@ 123456hotmail
                [»]

                The authors report no commercial, proprietary or financial interest in the products or companies described in this article.

                [»]

                Patients displayed in this article previously approved the use of their facial and intraoral photographs.

                Article
                10.1590/2177-6709.22.1.110-125.sar
                5398849
                28444019
                b771655f-144e-479b-b873-aa88c7874916

                This is an open-access article distributed under the terms of the Creative Commons Attribution License

                History
                : 06 September 2016
                : 10 October 2016
                Page count
                Figures: 27, Tables: 1, Equations: 0, References: 54, Pages: 16
                Categories
                Special Article

                microimplant-assisted rapid palatal expansion,palatal expansion technique,polysomnography,obstructive sleep apnea syndrome,adult patients,maxillary transverse deficiency,posterior crossbite.

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