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[PMID]:29412225
[Au] Autor:Gomes MC; Neves ÉT; Perazzo MF; Souza EGC; Serra-Negra JM; Paiva SM; Granville-Garcia AF
[Ad] Endereço:Universidade Estadual da Paraíba - UEPB, Dental School, Department of Dentistry, Campina Grande, PB, Brazil.
[Ti] Título:Evaluation of the association of bruxism, psychosocial and sociodemographic factors in preschoolers.
[So] Source:Braz Oral Res;32:e009, 2018 Feb 05.
[Is] ISSN:1807-3107
[Cp] País de publicação:Brazil
[La] Idioma:eng
[Ab] Resumo:The aim of the present study was to evaluate factors associated with sleep bruxism in five-year-old preschool children. A preschool-based cross-sectional study was conducted with 761 pairs of children and their parents/caregivers. Sleep bruxism was diagnosed using a questionnaire administered to the parents/caregivers, who also answered questionnaires addressing sociodemographic data and parent's/caregiver's sense of coherence. Clinical oral evaluations of the children to determine dental caries, traumatic dental injuries, malocclusion and tooth wear were performed by two researchers who had undergone a training exercise (interexaminer Kappa: 0.70 to 0.91; intraexaminer Kappa: 0.81 to 1.00). Descriptive analysis and logistic regression for complex samples were carried out (α = 5%). The prevalence of sleep bruxism among the preschool children was 26.9%. The multivariate analysis revealed that bruxism was associated with poor sleep quality (OR = 2.93; 95 CI: 1.52-5.65) and tooth wear (OR = 2.34; 95%CI: 1.39-3.96). In the present study, sleep bruxism among preschool children was associated with tooth wear and poor sleep quality of the child. In contrast, psychosocial aspects (sense of coherence) were not associated with sleep bruxism.
[Mh] Termos MeSH primário: Bruxismo do Sono/etiologia
Bruxismo do Sono/psicologia
[Mh] Termos MeSH secundário: Brasil/epidemiologia
Cuidadores
Pré-Escolar
Estudos Transversais
Feminino
Seres Humanos
Modelos Logísticos
Masculino
Pais
Prevalência
Senso de Coerência
Bruxismo do Sono/epidemiologia
Bruxismo do Sono/fisiopatologia
Fatores Socioeconômicos
Inquéritos e Questionários
Desgaste dos Dentes/complicações
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1803
[Cu] Atualização por classe:180307
[Lr] Data última revisão:
180307
[Sb] Subgrupo de revista:D; IM
[Da] Data de entrada para processamento:180208
[St] Status:MEDLINE


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[PMID]:28482089
[Au] Autor:Muzalev K; Lobbezoo F; Janal MN; Raphael KG
[Ad] Endereço:Department of Oral Kinesiology, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and Vrije Universiteit Amsterdam, Amsterdam, The Netherlands.
[Ti] Título:Interepisode Sleep Bruxism Intervals and Myofascial Face Pain.
[So] Source:Sleep;40(8), 2017 Aug 01.
[Is] ISSN:1550-9109
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Study Objectives: Sleep bruxism (SB) is considered as a possible etiological factor for temporomandibular disorder (TMD) pain. However, polysomnographic (PSG) studies, which are current "gold standard" diagnostic approach to SB, failed to prove an association between SB and TMD. A possible explanation could be that PSG studies have considered only limited characteristics of SB activity: the number of SB events per hour and, sometimes, the total duration of SB per night. According to the sports sciences literature, lack of adequate rest time between muscle activities leads to muscle overloading and pain. Therefore, the aim of this study was to determine whether the intervals between bruxism events differ between patients with and without TMD pain. Methods: Two groups of female volunteers were recruited: myofascial TMD pain group (n=124) and non-TMD control group (n=46). From these groups, we selected 86 (69%) case participants and 37 (80%) controls who had at least two SB episodes per night based on PSG recordings. A linear mixed model was used to compare case and control groups over the repeated observations of interepisode intervals. Results: The duration of interepisode intervals was statistically similar in the case (mean [standard deviation {SD}] 1137.7 [1975.8] seconds)] and control (mean [SD] 1192.0 [1972.0] seconds) groups. There were also a similar number of SB episodes per hour and a total duration of SB episodes in both groups. Conclusions: The current data fail to support the idea that TMD pain can be explained by increasing number of SB episodes per hour of sleep or decreasing the time between SB events.
[Mh] Termos MeSH primário: Dor Facial/complicações
Bruxismo do Sono/complicações
Transtornos da Articulação Temporomandibular/complicações
[Mh] Termos MeSH secundário: Adulto
Dor Facial/fisiopatologia
Feminino
Seres Humanos
Sono
Bruxismo do Sono/fisiopatologia
Transtornos da Articulação Temporomandibular/fisiopatologia
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1711
[Cu] Atualização por classe:171108
[Lr] Data última revisão:
171108
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170509
[St] Status:MEDLINE
[do] DOI:10.1093/sleep/zsx078


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Maia, Lucianne Cople
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[PMID]:28422599
[Au] Autor:de Alencar NA; Leão CS; Leão ATT; Luiz RR; Fonseca-Gonçalves A; Maia LC
[Ti] Título:Sleep Bruxism and Anxiety Impacts in Quality of Life Related to Oral Health of Brazilian Children and their Families.
[So] Source:J Clin Pediatr Dent;41(3):179-185, 2017.
[Is] ISSN:1053-4628
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:OBJECTIVE: This study aimed to assess the impact of parent reported sleep bruxism, trait anxiety and sociodemographic/socioeconomic features on quality of life related to oral health (OHRQoL) of children and their families. STUDY DESIGN: Healthy children aged 3-7 years, with (n=34) and without (n=32) bruxism were select for this study. Data was collected by applying the following instruments: The Early Childhood Oral Health Scale (B-ECOHIS) and Trait-anxiety Scale (TAS). The sociodemographic/socioeconomic characteristics were obtained by interviews with parents. Multiple logistic regression tests were performed to observe the influence of sociodemographic/socioeconomic characteristics, bruxism and trait-anxiety on the children's OHRQoL. RESULTS: No association between sleep bruxism and all evaluated sociodemographic/socioeconomic conditions, with exception of being the only child (p=0.029), were observed. Mean B-ECOHIS and TAS scores were different (p<0.05) between children with (3.41 ± 4.87; 45.09 ± 15.46, respectively) and without (0.63 ± 1.28; 29.53 ± 11.82, respectively) bruxism. Although an association between bruxism and OHRQoL (p=0.015) was observed, it was dropped (p=0.336; OR=1.77) in the logistic regression model. Trait anxiety was the variable responsible for the impact on the OHRQoL of children (p=0.012; OR=1.05). CONCLUSION: Our results indicated anxiety as the main factor that interfered in the OHRQoL of children with sleep bruxism.
[Mh] Termos MeSH primário: Bruxismo do Sono/psicologia
[Mh] Termos MeSH secundário: Ansiedade
Brasil
Estudos de Casos e Controles
Criança
Pré-Escolar
Feminino
Seres Humanos
Masculino
Saúde Bucal
Qualidade de Vida
Bruxismo do Sono/complicações
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1706
[Cu] Atualização por classe:170622
[Lr] Data última revisão:
170622
[Sb] Subgrupo de revista:D
[Da] Data de entrada para processamento:170420
[St] Status:MEDLINE
[do] DOI:10.17796/1053-4628-41.3.179


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[PMID]:28351492
[Au] Autor:Serra-Negra JM; Lobbezoo F; Martins CC; Stellini E; Manfredini D
[Ad] Endereço:Department of Pediatric Dentistry and Orthodontics, Universidade Federal de Minas Gerais, Av Antonio Carlos 6627, Campus Pampulha, Belo Horizonte, Minas Gerais 31270901, Brazil. Electronic address: juniaserranegra@hotmail.com.
[Ti] Título:Prevalence of sleep bruxism and awake bruxism in different chronotype profiles: Hypothesis of an association.
[So] Source:Med Hypotheses;101:55-58, 2017 Apr.
[Is] ISSN:1532-2777
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Sleep (SB) and awake bruxism (AB) recognize a multifactorial etiology and have a relationship with several psychological factors. Psychological disorders have recently been associated also with the chronotype, which is the propensity for an individual to be especially active at a particular time during a 24-h period. Based on the chronotype, the two extreme profiles are morningness and eveningness individuals. Due to the relationship that both the chronotype and bruxism have with psychological factors and the fact that performing tasks not compatible with chronotype can trigger stress, this review presents the hypothesis that the prevalence of SB and AB can differ with the various chronotype profiles. New perspectives for the study of bruxism etiology may emerge from investigations on the topic.
[Mh] Termos MeSH primário: Bruxismo/epidemiologia
Ritmo Circadiano
Bruxismo do Sono/epidemiologia
[Mh] Termos MeSH secundário: Seres Humanos
Modelos Teóricos
Grupo Associado
Prevalência
Sono
Inquéritos e Questionários
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171003
[Lr] Data última revisão:
171003
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170330
[St] Status:MEDLINE


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[PMID]:27977045
[Au] Autor:Jokubauskas L; Baltrusaityte A
[Ad] Endereço:Faculty of Odontology, Lithuanian University of Health Sciences, Kaunas, Lithuania.
[Ti] Título:Relationship between obstructive sleep apnoea syndrome and sleep bruxism: a systematic review.
[So] Source:J Oral Rehabil;44(2):144-153, 2017 Feb.
[Is] ISSN:1365-2842
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Obstructive sleep apnoea syndrome (OSAS) is a clinical risk factor for sleep bruxism (SB). Both OSAS and SB are reported to be associated with sleep-related arousal reactions, although no clear causative link has been established. An electronic literature search was conducted of the MEDLINE, ScienceDirect, Wiley Online Library, SAGE Journals and EBSCOhost databases covering the period January 2006 and September 2016. Sequential screenings at the title, abstract and full-text levels were performed. The review included observational studies in the English language with a clearly established aim to assess the relationship between OSAS and SB using full-night PSG. The seven-item quality-assessment tool for experimental bruxism studies was used to assess the methodology across the studies. After a comprehensive screening of titles, abstracts and full texts, only three studies that met the pre-defined criteria were finally included in this systematic review. Two studies gave evidence that OSAS is associated with the occurrence of SB events: (i) SB events frequently occur during micro-arousal events consequent on apnoea-hypopnoea (AH) events and (ii) most SB events occur in temporal conjunction with AH events termination. However, one study did not report a strong association between AH and SB events. It can be concluded that there are not enough scientific data to define a clear causative link between OSAS and SB. However, they appear to share common clinical features. Further studies should focus on the intermediate mechanisms between respiratory and SB events.
[Mh] Termos MeSH primário: Apneia Obstrutiva do Sono/fisiopatologia
Bruxismo do Sono/fisiopatologia
[Mh] Termos MeSH secundário: Comorbidade
Consenso
Seres Humanos
Polissonografia
Valores de Referência
Fatores de Risco
[Pt] Tipo de publicação:JOURNAL ARTICLE; REVIEW
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171030
[Lr] Data última revisão:
171030
[Sb] Subgrupo de revista:D; IM
[Da] Data de entrada para processamento:161216
[St] Status:MEDLINE
[do] DOI:10.1111/joor.12468


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[PMID]:27976438
[Au] Autor:Eysteinsdottir B; Gislason T; Pack AI; Benediktsdottir B; Arnardottir ES; Kuna ST; Björnsdottir E
[Ad] Endereço:Department of Respiratory Medicine and Sleep, Landspitali - The National University Hospital of Iceland, Reykjavik, Iceland.
[Ti] Título:Insomnia complaints in lean patients with obstructive sleep apnea negatively affect positive airway pressure treatment adherence.
[So] Source:J Sleep Res;26(2):159-165, 2017 Apr.
[Is] ISSN:1365-2869
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:The objective of this study was to evaluate the determinants of long-term adherence to positive airway pressure treatment among patients with obstructive sleep apnea, with special emphasis on patients who stop positive airway pressure treatment within 1 year. This is a prospective long-term follow-up of subjects in the Icelandic Sleep Apnea Cohort who were diagnosed with obstructive sleep apnea between 2005 and 2009, and started on positive airway pressure treatment. In October 2014, positive airway pressure adherence was obtained by systematically evaluating available clinical files (n = 796; 644 males, 152 females) with moderate to severe obstructive sleep apnea (apnea-hypopnea index ≥15 events per h). The mean follow-up time was 6.7 ± 1.2 years. In total, 123 subjects (15.5%) returned their positive airway pressure device within the first year, 170 (21.4%) returned it later and 503 (63.2%) were still using positive airway pressure. The quitters within the first year had lower body mass index, milder obstructive sleep apnea, less sleepiness, and more often had symptoms of initial and late insomnia compared with long-term positive airway pressure users at baseline. Both initial and late insomnia were after adjustment still significantly associated with being an early quitter among subjects with body mass index <30 kg m , but not among those with body mass index ≥30 kg m . The prevalence of early quitters decreased significantly during the study period (2005-2009). Almost two-thirds of patients with moderate to severe obstructive sleep apnea are positive airway pressure users after 7 years. Obesity level, obstructive sleep apnea severity and daytime sleepiness are important determinants of long-term adherence. Symptoms of initial and late insomnia are associated with early quitting on positive airway pressure among non-obese subjects.
[Mh] Termos MeSH primário: Pressão Positiva Contínua nas Vias Aéreas
Cooperação do Paciente
Apneia Obstrutiva do Sono/complicações
Apneia Obstrutiva do Sono/terapia
Distúrbios do Início e da Manutenção do Sono/etiologia
Distúrbios do Início e da Manutenção do Sono/psicologia
Magreza/complicações
[Mh] Termos MeSH secundário: Índice de Massa Corporal
Feminino
Seguimentos
Seres Humanos
Islândia
Masculino
Meia-Idade
Obesidade/complicações
Prevalência
Estudos Prospectivos
Síndrome das Pernas Inquietas/complicações
Apneia Obstrutiva do Sono/fisiopatologia
Apneia Obstrutiva do Sono/psicologia
Bruxismo do Sono/complicações
Fases do Sono
[Pt] Tipo de publicação:CLINICAL TRIAL; JOURNAL ARTICLE
[Em] Mês de entrada:1711
[Cu] Atualização por classe:171109
[Lr] Data última revisão:
171109
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:161216
[St] Status:MEDLINE
[do] DOI:10.1111/jsr.12482


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[PMID]:27796166
[Au] Autor:Jiménez-Silva A; Peña-Durán C; Tobar-Reyes J; Frugone-Zambra R
[Ad] Endereço:a Facultad de Ciencias de la Salud , Universidad Autónoma de Chile , Temuco , Chile.
[Ti] Título:Sleep and awake bruxism in adults and its relationship with temporomandibular disorders: A systematic review from 2003 to 2014.
[So] Source:Acta Odontol Scand;75(1):36-58, 2017 Jan.
[Is] ISSN:1502-3850
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:OBJECTIVE: In order to establish a relationship between bruxism and temporomandibular disorders (TMDs), a systematic review was performed. MATERIALS AND METHODS: A systematic research was performed based on PubMed, Cochrane Library, Medline, Embase, BIREME, Lilacs and Scielo data bases, between 2003 and 2014 including all languages. Descriptive clinical cases were identified. Two independent authors selected the articles. PICO format was used to analyse the studies and the Newcastle-Ottawa Scale (NOS) was used to verify the quality of the evidence. RESULTS: Thirty-nine studies (n = 39) were analysed in this review. According to bruxism diagnosis, articles were grouped as follows: polysomnographic diagnosis (PSG) (n = 7), clinical diagnosis (n = 11) and survey/self-report (n = 21). Thirty-three articles (n = 33) established a positive relation between bruxism and TMD and six (n = 6) did not. Quality of evidence was low to moderate. In general, the most part of the studies showed shortcomings on their design with bias risk, and also had a low sensitivity on bruxism diagnosis. CONCLUSIONS: The evidence based on PSG was not as conclusive as the studies that used surveys and clinical exam to diagnosis bruxism, when bruxism was related to TMD. Sleep bruxism could be associated with myofascial pain, arthralgia and joint pathology as disc displacement and joint noises. Although the evidence at present is inconclusive and does not provide information according to the type of bruxism (bruxism sleep and wakefulness), it is possible to suggest that bruxism would be associated with TMD.
[Mh] Termos MeSH primário: Bruxismo/complicações
Bruxismo do Sono/complicações
Transtornos da Articulação Temporomandibular/complicações
[Mh] Termos MeSH secundário: Artralgia/complicações
Seres Humanos
Luxações Articulares/complicações
Síndrome da Disfunção da Articulação Temporomandibular/complicações
[Pt] Tipo de publicação:JOURNAL ARTICLE; REVIEW
[Em] Mês de entrada:1701
[Cu] Atualização por classe:170111
[Lr] Data última revisão:
170111
[Sb] Subgrupo de revista:D; IM
[Da] Data de entrada para processamento:161101
[St] Status:MEDLINE
[do] DOI:10.1080/00016357.2016.1247465


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Registro de Ensaios Clínicos
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[PMID]:27697769
[Au] Autor:Blasco-Bonora PM; Martín-Pintado-Zugasti A
[Ad] Endereço:Private Practice, Physical Therapy, Valencia, Spain.
[Ti] Título:Effects of myofascial trigger point dry needling in patients with sleep bruxism and temporomandibular disorders: a prospective case series.
[So] Source:Acupunct Med;35(1):69-74, 2017 Mar.
[Is] ISSN:1759-9873
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:OBJECTIVES: To investigate the effects of deep dry needling (DN) of myofascial trigger points (MTrPs) of the masseter and temporalis on pain, pressure pain threshold (PPT), pain-free maximal jaw opening and temporomandibular disorder (TMD)-related disability in patients with sleep bruxism (SB) and myofascial TMD. METHODS: Seventeen subjects (11 women, 6 men) aged 39±13 years (range 23-66) diagnosed with SB and myofascial TMD were invited to participate in this prospective case series study. Each subject received a deep DN intervention in the masseter and temporalis MTrPs. Pain intensity, PPT, pain-free maximal jaw opening and TMD-related disability were assessed before treatment, immediately after treatment and at 1-week follow-up. Jaw disability was assessed using the jaw disability checklist (JDC) at baseline and 1 week post-treatment only. RESULTS: One-way analyses of variance showed significant improvements in pain intensity, PPT and jaw opening (p<0.001). Post-hoc analysis revealed significant differences between baseline and post-intervention follow-up time points in pain (immediate: Cohen's d=1.72, p<0.001; 1 week: d=3.24, p<0.001), jaw opening (immediate: d=0.77, p<0.001; 1 week: d=1.02, p<0.001) and PPT in the masseter (immediate: d=1.02, p<0.001; 1 week: d=1.64, p<0.001) and temporalis (immediate: d=0.91, p=0.006; 1 week: d=1.8, p<0.001). A dependent t-test showed a significant improvement in jaw functioning, reflected by a large reduction in 1-week JDC scores relative to baseline (d=3.15, p<0.001). CONCLUSIONS: Deep DN of active MTrPs in the masseter and temporalis in patients with myofascial TMD and SB was associated with immediate and 1-week improvements in pain, sensitivity, jaw opening and TMD-related disability. TRIAL REGISTRATION NUMBER: NCT02587182; Results.
[Mh] Termos MeSH primário: Terapia por Acupuntura
Síndromes da Dor Miofascial/terapia
Bruxismo do Sono/terapia
Transtornos da Articulação Temporomandibular/terapia
Pontos-Gatilho
[Mh] Termos MeSH secundário: Adulto
Idoso
Feminino
Seguimentos
Seres Humanos
Masculino
Músculo Masseter
Meia-Idade
Agulhas
Medição da Dor
Limiar da Dor
Estudos Prospectivos
Músculo Temporal
Resultado do Tratamento
Adulto Jovem
[Pt] Tipo de publicação:CLINICAL TRIAL; JOURNAL ARTICLE
[Em] Mês de entrada:1703
[Cu] Atualização por classe:170817
[Lr] Data última revisão:
170817
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:161005
[Cl] Clinical Trial:ClinicalTrial
[St] Status:MEDLINE
[do] DOI:10.1136/acupmed-2016-011102


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[PMID]:27687043
[Au] Autor:Berger M; Szalewski L; Szkutnik J; Ginszt M; Ginszt A
[Ad] Endereço:Department of Functional Masticatory Disorders, Medical University of Lublin, Lublin, Poland.
[Ti] Título:Different association between specific manifestations of bruxism and temporomandibular disorder pain.
[So] Source:Neurol Neurochir Pol;51(1):7-11, 2017 Jan - Feb.
[Is] ISSN:0028-3843
[Cp] País de publicação:Poland
[La] Idioma:eng
[Ab] Resumo:INTRODUCTION: A growing body of evidence suggests that bruxism exists in two separate manifestations. However, little is known about the association between specific manifestations of bruxism and temporomandibular disorder (TMD) pain. AIM: The aim of our study was to analyze the association between TMD pain and specific diagnoses of bruxism (sleep, awake, and mixed diagnosis of sleep and awake bruxism). MATERIAL AND METHODS: 508 adult patients (296 women and 212 men), aged between 18 and 64 years (mean age 34±12 years), attending to a clinic for general dental treatment. Patients were asked to fill an anonymous questionnaire, consisting of three questions, verifying the presence of TMD pain and two forms of bruxism. All questions were based on the Polish version of the Research Diagnostic Criteria for Temporomandibular Disorders patient history questionnaire. Cross tabulation was done, and χ was used as a test of significance to find the association between the variables. RESULTS: Awake bruxism was associated with TMD pain only in men (χ =7.746, p<0.05) while mixed diagnosis of bruxism was associated with TMD pain in both women (χ =10.486, p<0.05) and men (χ =4.314, p<0.05). There was no statistically significant association between sleep bruxism and TMD pain. Gender-related differences in the presence of all bruxism diagnoses were also statistically insignificant. CONCLUSIONS: Interaction between sleep and awake bruxism may increase the risk for TMD pain. We suggest considering concomitance as a confounder, when studying sleep or awake bruxism.
[Mh] Termos MeSH primário: Bruxismo/fisiopatologia
Dor Facial/fisiopatologia
Transtornos da Articulação Temporomandibular/fisiopatologia
[Mh] Termos MeSH secundário: Adolescente
Adulto
Bruxismo/classificação
Bruxismo/complicações
Dor Facial/etiologia
Feminino
Seres Humanos
Masculino
Meia-Idade
Fatores Sexuais
Bruxismo do Sono/complicações
Bruxismo do Sono/fisiopatologia
Transtornos da Articulação Temporomandibular/etiologia
Adulto Jovem
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1706
[Cu] Atualização por classe:170620
[Lr] Data última revisão:
170620
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:161001
[St] Status:MEDLINE


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[PMID]:27629540
[Au] Autor:Inan R; Senel GB; Yavlal F; Karadeniz D; Gündüz A; Kiziltan ME
[Ad] Endereço:Department of Neurology, Dr. Lütfi Kirdar Kartal Training and Researching Hospital, Istanbul, Turkey.
[Ti] Título:Sleep bruxism is related to decreased inhibitory control of trigeminal motoneurons, but not with reticulobulbar system.
[So] Source:Neurol Sci;38(1):75-81, 2017 Jan.
[Is] ISSN:1590-3478
[Cp] País de publicação:Italy
[La] Idioma:eng
[Ab] Resumo:Sleep bruxism (SB) is a stereotyped movement disorder characterized by grinding or clenching of the teeth during sleep. We aimed to understand the abnormal networks related to the excitability of masticatory pathways in patients with SB. Eleven patients with SB and age- and gender-matched 20 healthy subjects were prospectively enrolled in our study. The masseter inhibitory reflex (MIR) after electrical stimulation and auditory startle reaction (ASR) were examined. For MIR responses, durations of early and late silent period (SP) were shorter and the degree of suppression of SPs was significantly lower in SB group in comparison to those obtained in healthy subjects. The ASR responses even of the masseter muscle, however, were similar between patients with SB and healthy individuals. Abnormal MIR provides support for the decreased inhibitory control of the central masticatory circuits in SB whereas normal ASR suggests the integrity and normal functioning of brainstem pathways mediating startle reaction. Although the sample size is small, our results are in line with previous findings and suggest an abnormally decreased inhibition in trigeminal motoneurons to masseter muscle rather than reticulobulbar pathways in patients with SB.
[Mh] Termos MeSH primário: Músculo Masseter/fisiopatologia
Neurônios Motores/fisiologia
Reflexo Anormal/fisiologia
Bruxismo do Sono/fisiopatologia
[Mh] Termos MeSH secundário: Estimulação Acústica
Adulto
Estimulação Elétrica
Eletromiografia
Feminino
Seres Humanos
Masculino
Meia-Idade
Polissonografia
Reflexo/fisiologia
Reflexo de Sobressalto/fisiologia
Adulto Jovem
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1702
[Cu] Atualização por classe:171013
[Lr] Data última revisão:
171013
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160916
[St] Status:MEDLINE
[do] DOI:10.1007/s10072-016-2711-x



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