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1.
Arch Oral Biol ; 133: 105315, 2022 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-34808513

RESUMO

OBJECTIVE: To evaluate the association of single-nucleotide polymorphisms within the catechol-O-methyltransferase and 5-hydroxytryptamine receptor 2A genes with sleep bruxism in individuals diagnosed with obstructive sleep apnea. DESIGN: Sixty-nine individuals with suspected sleep-related problems were evaluated by polysomnography, following the recommendations of the American Academy of Sleep Medicine. Deoxyribonucleic acid (DNA) samples were collected only from 48 of the study participants because of missing polysomnographic data. DNA samples were collected and two single-nucleotide polymorphisms in the 5-hydroxytryptamine receptor 2A encoding HTR2A gene (rs4941573 and rs6313) and two in the catechol-O-methyltransferase gene (rs165656 and rs174675) were selected to be genotyped using real-time polymerase chain reaction. The association between sleep bruxism and genetic polymorphisms was investigated by recessive and dominant models. Association analyses were performed using a 95% confidence interval and the level of statistical significance was p < 0.05. RESULTS: From the 69 study participants, 48 were included in the polymorphism analysis and sleep bruxism was present in 35.4%. No significant differences were observed in the dominant and recessive models (p > 0.05). Haplotype and diplotype analyses revealed the predicted four haplotypes and two diplotypes were not associated with sleep bruxism. CONCLUSION: Polymorphisms rs174675 and rs165656 in the catechol-O-methyltransferase gene and rs4941573 and rs6313 in the 5-hydroxytryptamine receptor 2A gene were not significantly associated with sleep bruxism in individuals with obstructive sleep apnea.


Assuntos
Catecol O-Metiltransferase , Receptor 5-HT2A de Serotonina , Apneia Obstrutiva do Sono , Bruxismo do Sono , Catecol O-Metiltransferase/genética , Humanos , Polimorfismo de Nucleotídeo Único , Receptores de Serotonina/genética , Apneia Obstrutiva do Sono/complicações , Apneia Obstrutiva do Sono/genética , Bruxismo do Sono/complicações , Bruxismo do Sono/genética
2.
Clin Neuropharmacol ; 44(6): 247-249, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-34767327

RESUMO

OBJECTIVE: The aim of the study was to describe the efficacy of buspirone in controlling nonpharmacological awake and sleep bruxism. METHODS: Four cases of nonpharmacological awake and sleep bruxism, one of them with a 20-year-long history, in which buspirone succeeded to control bruxism, are described and discussed. RESULTS: Two of the 4 cases had sleep bruxism, and the other 2 cases had sleep and awake bruxism. Besides anxiety, no other predisposing condition was identified. Buspirone was effective in reducing bruxism symptoms in the 4 cases. Mean percentage of bruxism reduction after buspirone was ranked as 65% by subjects. CONCLUSIONS: In this small series of cases, buspirone proved effective in the control of nonpharmacological awake and sleep bruxism.


Assuntos
Bruxismo , Bruxismo do Sono , Ansiedade , Buspirona/uso terapêutico , Humanos , Sono , Bruxismo do Sono/tratamento farmacológico , Vigília
3.
BMC Oral Health ; 21(1): 549, 2021 10 26.
Artigo em Inglês | MEDLINE | ID: mdl-34702237

RESUMO

BACKGROUND: The purpose of the present study is to evaluate the prevalence of temporomandibular disorders (TMD) and their associated biological and psychological factors in Chinese university students. METHODS: A total of 754 students were included from Zunyi Medical University, each participant completed questionnaires and clinical examinations according to the Diagnostic Criteria for Temporomandibular Disorders. RESULTS: The overall prevalence of TMD was 31.7% among medical students. Subjects with TMD had a high prevalence of bruxism, empty chewing, unilateral chewing, chewing gum, anterior teeth overbite, anterior teeth overjet, depression, anxiety, and sleep disturbance. Moreover, sleep bruxism, empty chewing, unilateral chewing, anterior teeth overbite, depression, and anxiety were the strongest risk factors for TMD. CONCLUSIONS: Individuals with TMD have a high prevalence of psychological distress and oral parafunctional habits. Except for the psychological factors associated with TMD, bruxism, abnormal chewing, and malocclusion also shared similar risks for TMD.


Assuntos
Bruxismo , Bruxismo do Sono , Estudantes de Medicina , Transtornos da Articulação Temporomandibular , Bruxismo/complicações , Bruxismo/epidemiologia , China/epidemiologia , Humanos , Prevalência , Fatores de Risco , Transtornos da Articulação Temporomandibular/complicações , Transtornos da Articulação Temporomandibular/epidemiologia
4.
Artigo em Inglês | MEDLINE | ID: mdl-34574467

RESUMO

(1) Background: Bruxism, a condition characterized by grinding and involuntary clenching of the teeth, is a risk factor for the development of masticatory dysfunction. It can occur together with sleep disturbances and may be associated with abnormal body movements, breathing difficulties, increased muscle activity, and heart rate disturbances. This disorder is becoming an important dental concern in children. (2) Methods: A literature review was carried out based on a search in PubMed and Google Scholar databases for articles on bruxism in children, published between 2014 and 2021. The etiology, diagnosis, and treatment of bruxism in children were of particular interest in the study. (3) Results: A total of 40 articles were included in the review. The analyzed studies indicated that the prevalence rates of bruxism in children vary widely from 13% to 49%. The etiology of bruxism is complex and incomprehensible, and the main diagnostic criteria for this condition in children are subjective observation, clinical history, and clinical examination. The recommended therapy for sleep bruxism in children is physiotherapy and psychotherapy. (4) Conclusions: Dentists and primary care physicians should correctly diagnose bruxism in children, educate parents, prevent potential consequences for oral health, and identify possible comorbidities. Appropriate clinical guidelines for the treatment and prophylaxis of bruxism in children should also be developed.


Assuntos
Bruxismo do Sono , Transtornos do Sono-Vigília , Criança , Comorbidade , Humanos , Prevalência , Fatores de Risco , Bruxismo do Sono/diagnóstico , Bruxismo do Sono/epidemiologia , Bruxismo do Sono/etiologia
6.
J Dent ; 113: 103788, 2021 10.
Artigo em Inglês | MEDLINE | ID: mdl-34425171

RESUMO

OBJECTIVES: This study aimed to explore the association between occlusal features and temporomandibular disorder (TMD) pain complaints and probable awake or sleep bruxism METHODS: Path analysis was used to estimate direct, indirect and total effects of occlusal features on probable bruxism and pain-related TMD in adults aged 31 years from the 1982 Pelotas Birth Cohort. A total of 539 cohort members had an oral examination in 2013. Occlusal features were assessed through the Dental Aesthetic Index (DAI), orofacial pain complaints through the TMD pain screener and probable bruxism based on self-reports in combination with clinical findings. RESULTS: Malocclusions were found in 28.8% of the participants, while awake bruxism was reported in 35.2%, sleep bruxism in 15.2%, and pain-related TMD in 52.5% of the sample. Occlusion had no direct effect on either awake bruxism [standardized coefficient (SC) -0.002; p = 0.995] or pain-related TMD (SC -0.06; p = 0.115). Conversely, probable awake bruxism was associated with pain-related TMD (SC 0.35; p < 0.001). Similar results were found when sleep bruxism was set as the mediator of interest, as malocclusion did not directly affect sleep bruxism (SC 0.05; p= 0.220) nor pain-related TMD (SC -0.06; p = 0.167). A direct effect of sleep bruxism on pain-related TMD was observed with an SC of 0.16 (p < 0.001). CONCLUSION: Our findings suggested that malocclusion during adulthood did not directly influence probable awake or sleep bruxism nor TMD pain complaints. Instead, probable awake and sleep bruxism was associated with TMD pain complaints. CLINICAL SIGNIFICANCE: Malocclusion did not impact the presence of bruxism nor TMD complaints in adulthood, but awake and sleep bruxism were associated with TMD pain complaints. The significance of malocclusion should be reconsidered in contemporary dentistry and oral rehabilitation.


Assuntos
Má Oclusão , Bruxismo do Sono , Transtornos da Articulação Temporomandibular , Adulto , Estudos de Coortes , Dor Facial/etiologia , Humanos , Má Oclusão/complicações , Bruxismo do Sono/complicações , Transtornos da Articulação Temporomandibular/epidemiologia , Transtornos da Articulação Temporomandibular/etiologia
9.
Braz Oral Res ; 35: e090, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-34378672

RESUMO

The present cross-sectional case-control study aimed to determine if there is an association between specific oral behaviors, sleep bruxism (SB), awake bruxism (AB), and painful temporomandibular joint (TMJ) clicking. Ninety individuals were dived into three groups; Group 1 (n = 30): painful TMJ clicking; Group 2 (n = 30): painless TMJ clicking; and Group 3 (n = 30): control group. The following clinical data were studied: oral behaviors (unilateral chewing, gum chewing, nail biting, foreign objects biting, leaning with jaw against the hand, and sleeping in a position that pressures the jaw), SB, AB (including the frequency in 10 days, evaluated by ecological momentary assessment), and malocclusions investigated based on clinical inspections (anterior open bite, posterior cross-bite, abnormal overbite/overjet, occlusal guidance, mediotrusive and/or laterotrusive interferences, retruded contact position to maximum intercuspation slide, missing posterior teeth). All statistical tests (Kolmogorov-Smirnov, chi-square, and one-way ANOVA) were performed with a 5% significance level. Group 1 had the highest frequency of and a significant association with leaning with jaw in the hand, sleeping position that pressures the jaw, gum chewing, nail biting, and AB (p<0.05). Gum chewing, nail biting, and AB were associated with Group 2 only when compared to Group 3 (p<0.05). No significant difference among groups was found for other behaviors (unilateral chewing and foreign objects biting), SB, and all malocclusions (p>0.05). It can be concluded that patients with painful TMJ clicking had a higher frequency of and a significant association with some specific harmful behaviors and AB.


Assuntos
Bruxismo , Má Oclusão , Bruxismo do Sono , Estudos de Casos e Controles , Estudos Transversais , Humanos , Articulação Temporomandibular
10.
J Oral Rehabil ; 48(11): 1271-1282, 2021 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-34431126

RESUMO

BACKGROUND AND OBJECTIVES: To present a world panorama of the published papers on bruxism in children and adolescents, emphasising the characteristics of studies related to the sleep features of these patients. METHODS: Literature searches were conducted in six databases without language or date restrictions. Data on the titles, types of study, main subjects, countries of origin, keywords, years of publication, authors and their network collaborations, journals and sleep studies were extracted and analysed using VantagePoint™ software. RESULTS: A total of 725 studies met the eligibility criteria. Most included only children (75.31%), with observational design (66.34%), and risk or aetiology (53.93%) as the main subject. Brazil (18.06%) and Brazilian authors (54.84%) had the largest number of studies, with a low amount of network collaboration. The Journal of Oral Rehabilitation published most of the studies (6.2%); publications in this field have grown considerably from 2000 to 2020. Of the studies, 123 (16.96%) included sleep studies; night sweating, restless sleep, sleep talking, mouth breathing, snoring, obstructive sleep apnoea syndrome, sleep-disordered breathing, nightmares, poor sleep quality and duration, and daytime naps were significantly associated with bruxism in most. CONCLUSION: Studies on bruxism in children and adolescents have increased in the past 20 years, with most being observational, and risk or aetiology as the main subject. Brazil and the Journal of Oral Rehabilitation have published most in the field. Sleep studies have shown some features associated with bruxism, such as night sweating, restless sleep, somniloquy, snoring, breathing problems, nightmares, daytime naps, and poor sleep quality and duration.


Assuntos
Bruxismo , Apneia Obstrutiva do Sono , Bruxismo do Sono , Adolescente , Bibliometria , Criança , Humanos , Sono , Ronco
11.
J Appl Oral Sci ; 29: e20201089, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-34320119

RESUMO

BACKGROUND: Dentists are exposed to contamination by SARS-CoV-2 due to dental interventions, leading to a state of alert and potential risk of negative impact in mental health and sleep quality, associated with Temporomandibular Disorder (TMD) and bruxism. OBJECTIVE: to evaluate the psychosocial status, sleep quality, symptoms of TMD, and bruxism in Brazilian dentists (DSs) during the COVID-19 pandemic. METHODOLOGY: The sample (n=641 DSs) was divided into three groups (quarantined DSs; DSs in outpatient care; and frontline professionals), which answered an electronic form containing the TMD Pain Screening Questionnaire (Diagnostic Criteria for Temporomandibular Disorders - DC/TMD), the Pittsburgh Sleep Quality Index (PSQI), the Depression, Anxiety and Stress Scale (DASS-21), and the sleep and awake bruxism questionnaire. ANOVA test and Mann Whitney post-test were used, with Bonferroni adjustment (p<0.016) and a 95% confidence level. RESULTS: Probable TMD was found in 24.3% (n=156) of the participants, while possible sleep and awake bruxism were diagnosed in 58% (n=372) and 53.8% (n=345) of them, respectively. Among all variables evaluated, only symptoms of depression were significantly greater in the quarantined DSs group when compared to those who were working at the clinical care (p=0.002). Working DSs were significantly less likely (OR=0.630, p=0.001) to have depressive symptoms. Those who were not worried or less worried about the pandemic were less likely to experience stress (OR=0.360), anxiety (OR=0.255), and poor sleep quality (OR=0.256). Sleep had a strong positive and moderate correlation with psychological factors on frontline workers and DSs in outpatient care, respectively. CONCLUSION: The results suggest confinement may have a more negative impact on the life of DSs than the act of being actively working. The concern about Covid-19 and poor sleep quality was significantly prevalent and may negatively affect the quality of life of DSs. Thus, further research on the topic is needed.


Assuntos
Bruxismo , COVID-19 , Bruxismo do Sono , Transtornos da Articulação Temporomandibular , Brasil/epidemiologia , Odontólogos , Humanos , Pandemias , Qualidade de Vida , SARS-CoV-2 , Sono , Bruxismo do Sono/epidemiologia , Transtornos da Articulação Temporomandibular/epidemiologia
12.
Arch. health invest ; 10(7): 1032-1039, July 2021. tab
Artigo em Português | BBO - Odontologia | ID: biblio-1342732

RESUMO

Objetivo: descrever sobre as condições bucais das crianças com Microcefalia associada ao Zika vírus. Metodologia: Estudo transversal realizado com 13 crianças atendidas no projeto institucional e multidisciplinar "Atenção Integrada às crianças com microcefalia por Zika vírus" e seus respectivos cuidadores. Foi realizado entrevista com os cuidadores e de exame clínico bucal nas crianças, sendo coletados dados sobre características sociodemográficas e econômicas, hábitos de higiene, comportamentais e alimentares, assim como as características oclusais e os índices clínicos odontológicos (ISG, IPV e ceo-d). Os dados foram analisados de maneira descritiva e através do teste Wilcoxon no software Statistical Package for the Social Sciences, versão 20. Resultados: A maioria das crianças eram do sexo feminino (53,8%), entre 24 e 35 meses (76,9%) e a mãe era o principal cuidador (76,9%). Em relação aos hábitos das crianças, 61,5% apresentavam alimentação semissólida, com frequência de escovação diária de duas vezes ou mais (46,2%), utilizavam mamadeira (76,9%) e chupeta (53,8%). As crianças não apresentavam cárie, o ISG e IPV foram considerados satisfatórios. Além disso, 92,3% das crianças rangiam os dentes durante a noite, 61,5% apresentavam mordida aberta anterior, sobressaliência aumentada (84,6%) e cronologia de erupção alterada (84,6%). Conclusão: As crianças apresentavam erupção dentária tardia, presença de facetas de desgastes, chave de canino com classificação I, mordida aberta anterior e sobressaliência aumentada. Além disso, possuíam frequência de escovação satisfatória, alimentações semissólida, usavam mamadeira e chupeta. A partir dos índices odontológicos, observou-se que as crianças apresentavam uma saúde bucal satisfatória(AU)


Objective: to describe the oral conditions of children with microcephaly associated with Zikavirus. Methodology: Cross-sectional study carried out with 13 children assisted in the institutional and multidisciplinary project "Integrated Care for children with microcephaly due to Zika virus" and their respective caregivers. Interviews were conducted with caregivers and a clinical oral exam was carried out on the children, with data on sociodemographic and economic characteristics, hygiene, behavioral and dietary habits, as well as occlusal characteristics and clinical dental indexes (ISG, IPV and ceo-d) being collected. The data were analyzed descriptively and using the Wilcoxon test in the Statistical Package for the Social Sciences software, version 20. Results: Most children were female (53.8%), between 24 and 35 months (76.9 %) and the mother wasthe main caregiver (76.9%). Regarding the children's habits, 61.5% had a semi-solid diet, with a daily brushing frequency of twice or more (46.2%), used a bottle (76.9%) and pacifier (53.8%). The children did not present caries, the ISG and IPV were considered satisfactory. In addition, 92.3% of children gritted their teeth at night, 61.5% had an open anterior bite, increased overjet (84.6%) and altered rash chronology (84.6%) Conclusion: Children had a rash late dental, presence of wear facets, canine keywith classification I, anterior open bite and increased overjet. In addition, they had a satisfactory brushing frequency, semi-solid food, used a bottle and used a pacifier. From the dental indexes, it was observed that the children had satisfactory oral health(AU)


Objetivo: describir las condiciones bucales de los niños con microcefalia asociada al virus del Zika. Metodología: Estudio transversal realizado con 13 niños atendidos en el proyecto institucional y multidisciplinario "Atención integral a niños conmicrocefalia por virus Zika" y sus respectivos cuidadores. Se realizaron entrevistas con los cuidadores y se realizó un examen clínico bucal a los niños, con datos de características sociodemográficas y económicas, higiene, hábitos de comportamiento y dietéticos, así como características oclusales e índices clínico-odontológicos (ISG, IPV y ceo). -d) siendo recogido. Los datos se analizaron de forma descriptiva y mediante la prueba de Wilcoxon en el software Statistical Package for the Social Sciences, versión 20. Resultados: La mayoría de los niños eran mujeres (53,8%), entre 24 y 35 meses (76,9%) y la madre era la principal cuidadora. (76,9%). En cuanto a los hábitos de los niños, el 61,5% tenía alimentación semisólida, con una frecuencia de cepillado diario de dos o más (46,2%), utilizaba biberón (76,9%) y chupete (53,8%). Los niños no presentaron caries, la ISG y la IPV se consideraron satisfactorias. Además, el 92,3% de los niños apretaban los dientes por la noche, el 61,5% tenía una mordida anterior abierta, un resalte elevado (84,6%) y una cronología de la erupción alterada (84,6%) Conclusión: los niños tenían una erupción dental tardía, presencia de facetas de desgaste, canino clave con clasificación I, mordida abierta anterior y resalte aumentado. Además, tenían una frecuencia de cepillado satisfactoria, alimentos semisólidos, usaban biberón y usaban chupete. A partir de los índices dentales, se observó que los niños tenían una salud bucal satisfactoria(AU)


Assuntos
Humanos , Masculino , Feminino , Recém-Nascido , Lactente , Pré-Escolar , Higiene Bucal , Saúde Bucal , Zika virus , Microcefalia , Erupção Dentária , Escovação Dentária , Estudos Transversais , Bruxismo do Sono , Mordida Aberta , Cárie Dentária
13.
Spec Care Dentist ; 41(6): 700-706, 2021 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-34131935

RESUMO

AIMS: The present study investigated if recurrent manifestation of oral herpes lesions is associated with other factors and impacts the oral health-related quality of life in para-athletes. METHODS AND RESULTS: The studied population was composed of a convenience sample of 370 Brazilian para-athletes. All included individuals answered questionnaires and were submitted to an oral examination. A self-reported questionnaire addressed demographic and oral health data, including the recurrent manifestation of oral herpes lesions. The Oral Health Impact Profile was also applied in its reduced version with 14 questions (OHIP-14). The population was categorized according to results from previous competitions into a high-performance level, medium-performance level, and regional-performance level. Chi-square or Fisher's exact tests, odds ratio calculation, logistic regression analysis, and t-tests were performed (α = 5%). Sixty (16.2%) para-athletes reported recurrent manifestations of oral herpes lesions. Para-athletes with sleep bruxism (p = .007) and awake bruxism (p = .048) had a higher chance of reporting oral herpes lesions. Type of breathing was also associated with oral herpes lesions (p = .031). The OHIP-14 mean distribution among the groups was not statistically significant (p > .05). CONCLUSION: Bruxism and type of breathing were associated with self-reported oral herpes lesions in Brazilian para-athletes.


Assuntos
Bruxismo , Paratletas , Bruxismo do Sono , Brasil/epidemiologia , Humanos , Saúde Bucal , Qualidade de Vida , Inquéritos e Questionários
14.
J Oral Facial Pain Headache ; 35(2): 129-138, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-34129658

RESUMO

AIMS: To answer the question: among observational studies, is there any association between primary headaches and bruxism in adults? MATERIALS AND METHODS: A systematic review of observational studies was performed. The search was performed in seven main databases and three gray literature databases. Studies in which samples were composed of adult patients were included. Primary headaches were required to be diagnosed by the International Classification of Headache Disorders. Any diagnostic method for bruxism was accepted. Risk of bias was evaluated using the Joanna Briggs Institute Critical Appraisal Tool and the Meta-Analysis of Statistics Assessment and Review Instrument (MAStARI) tool. Associations were analyzed by calculating odds ratios (OR) in Review Manager 5.3 software. The evidence certainty was screened by Grading of Recommendations Assessment, Development, and Evaluation criteria. RESULTS: Of the 544 articles reviewed, 5 met the inclusion criteria for qualitative analysis. The included studies evaluated both awake and sleep bruxism, as well as tension-type headaches and migraines as primary headaches. Among two migraine studies, one showed an OR of 1.79 (95% CI: 0.96 to 3.33) and another 1.97 (95% CI: 1.5 to 2.55). On the other hand, among three tension-type headache studies, there was a positive association only with awake bruxism, with an OR of 5.23 (95% CI: 2.57 to 10.65). All included articles had a positive answer for more than 60% of the risk of bias questions. The evidence certainty varied between low and very low. Due to high heterogeneity among the studies, it was impossible to perform a meta-analysis. CONCLUSION: Patients with awake bruxism have from 5 to 17 times more chance of having tension-type headaches. Sleep bruxism did not have any association with tension-type headache, and the association with migraines is controversial.


Assuntos
Bruxismo , Transtornos de Enxaqueca , Bruxismo do Sono , Cefaleia do Tipo Tensional , Adulto , Bruxismo/complicações , Cefaleia/etiologia , Humanos , Estudos Observacionais como Assunto , Razão de Chances , Bruxismo do Sono/complicações , Bruxismo do Sono/diagnóstico
15.
J Dent ; 111: 103711, 2021 08.
Artigo em Inglês | MEDLINE | ID: mdl-34090993

RESUMO

OBJECTIVE: To provide a scoping review of the literature by assessing all the English-language papers that investigated the relationship between sleep bruxism (SB) and temporomandibular disorders (TMDs). STUDY DATA AND SOURCES: A search was performed in the National Library of Medicine (PubMed) and Scopus databases, in order to identify all the articles published assessing the relationship between SB and TMDs, by several different approaches. The selected articles were then structurally read and summarized in PICO tables. The articles were selected independently by the two authors. STUDY SELECTION: Out of 185 references that were initially retrieved, 47 articles met the inclusion criteria and were thus included in the review. The studies were divided into four categories based on the type of SB assessment: 1. questionnaire/self-report (n = 26), 2. clinical examination (n = 7), 3. electromyography (EMG) (n = 5), and 4. polysomnography (PSG) (n = 9). CONCLUSIONS: Studies based on questionnaire/self-report SB featured a low specificity for SB assessment, and in general they found a positive association with TMD pain. On the contrary, instrumental studies (i.e., electromyography, polysomnography) found a lower level of association or even a negative relationship between SB and TMD pain. Findings from this updated review confirmed the conclusions of a previous review by Manfredini & Lobbezoo, suggesting that literature findings on the relationship between SB and TMDs are dependent on the assessment strategies that are adopted for SB. Future studies should consider SB as a multifaceted motor behavior that must be evaluated in its continuum spectrum, rather than using a simplified dichotomous approach of presence/absence.


Assuntos
Bruxismo do Sono , Transtornos da Articulação Temporomandibular , Eletromiografia , Humanos , Polissonografia , Autorrelato , Bruxismo do Sono/complicações
16.
Chronobiol Int ; 38(9): 1367-1374, 2021 09.
Artigo em Inglês | MEDLINE | ID: mdl-34039225

RESUMO

It was hypothesized that an individual's chronotype profile has an effect on the performance of work or study tasks. Dental students have to cope with both academic and clinical workloads, and the latter requires extra concentration. The first aim was to evaluate the association of sleep bruxism (SB) and awake bruxism (AB) with sleep related items, temporomandibular disorder (TMD) complaints, and chronotype profile; the second aim was to evaluate the association between complaints of TMD and chronotype profile among dental students. The present cross-sectional descriptive study involved 218 dental students whose ages ranged between 18 and 30 years. In order to gather data, students were required to respond to a questionnaire, which aimed to evaluate possible SB and possible AB occurrence and demographics, sleep-related items and complaints of TMD. For the assessment of the chronotype profile, the morningness-eveningness questionnaire (MEQ) was used. The chi-square test, the Mann-Whitney U test, and t-test analyses were performed to evaluate the factors associated with SB, AB and chronotype profile. The frequency of self-reported SB was 25.2% and AB was 28.9%. The prevalence in the eveningness profile who reported possible AB was 45.3%, while it was 24.2% in intermediate individuals and 18.8% in the morningness profile. An association was also found between possible AB and eveningness chronotype profile (p = .009). No association was found between other temporomandibular joint (TMJ) pain and noise and chronotype profiles (p > .05). An association was found between possible AB and eveningness chronotype profile but no association was found between possible SB and chronotype profile. Moreover, complaint of TMD (face, head, neck pain) was observed particularly in students with an eveningness profile.


Assuntos
Bruxismo do Sono , Transtornos da Articulação Temporomandibular , Adolescente , Adulto , Ritmo Circadiano , Estudos Transversais , Humanos , Sono , Bruxismo do Sono/epidemiologia , Estudantes de Odontologia , Inquéritos e Questionários , Transtornos da Articulação Temporomandibular/epidemiologia , Vigília , Adulto Jovem
18.
J Oral Rehabil ; 48(8): 901-908, 2021 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-33983628

RESUMO

BACKGROUND: Contingent vibratory feedback stimuli applied by a specially designed oral appliance (OA) have been reported to be effective in reducing sleep bruxism (SB). However, the inhibitory effects of the OA, which occur immediately after OA delivery, may have confounded this finding. OBJECTIVE: This study sought to shed light on the effects of vibratory stimuli on SB after the OA adaptation period, when its inhibitory effects are diminished. METHODS: Fourteen 'definite' SB patients were enrolled. A force-based bruxism detection system was utilised to trigger a vibrator attached to the OA. Masseter electromyographic activity during sleep was recorded at home using portable polysomnography. After using the OA without vibratory stimulus for 16 nights (adaptation period), intermittent vibratory stimuli were applied every other half-hour for four nights (intervention period). Electromyographic activity over 10% of the maximum voluntary contraction was regarded as a SB episode. The number and the total duration of SB episodes per hour of sleep were calculated for the sessions with and without stimuli separately and averaged for four intervention nights. The effects of stimuli on these two variables were evaluated. RESULTS: The number and the total duration of the sessions without stimuli were 5.2 episodes/h and 35.3 s/h, respectively. These values significantly decreased to 3.9 episodes/h and 15.1 s/h (p < .05) for the sessions with vibratory stimuli. CONCLUSION: Contingent vibratory stimulus via an OA may be effective for the management of SB even after adaptation to OA.


Assuntos
Bruxismo do Sono , Eletromiografia , Humanos , Músculo Masseter , Placas Oclusais , Polissonografia , Bruxismo do Sono/terapia , Contenções , Resultado do Tratamento
19.
Sleep Med Clin ; 16(2): 373-380, 2021 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-33985661

RESUMO

The vision of adult sleep bruxism (SB) has changed over time. Thus, among the most important concomitant factors of SB noted are the pathophysiological aspect, namely sleep arousal, obstructive sleep apnea, gastroesophageal pH/gastroesophageal reflux disease, and the use or abuse of certain substances. The aim of this article was to review the main clinically relevant pathophysiological SB-associated factors and a proposal for a diagnostic process.


Assuntos
Bruxismo do Sono/diagnóstico , Bruxismo do Sono/fisiopatologia , Humanos
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