Sleep bruxism and associated physiological events in children with obstructive sleep apnea: a polysomnographic study.

STUDY OBJECTIVES: The aim of this study was to evaluate the physiological events associated with sleep bruxism (Sleep Bruxism [SB]; presence of mandibular movement activity) and the control window (4 minutes prior to SB event, where no mandibular movement activity was detected) in a polysomnography study in children with mild sleep apnea. METHODS: Polysomnography data from children aged 4 to 9 years old diagnosed with mild sleep apnea were analyzed by 2 trained examiners. The mandibular movement activity (bruxism event; SB) was classified into phasic and tonic. The control window was selected 4 minutes prior to the SB event. All physiological events were recorded in both bruxism and control windows, including sleep phase (N1, N2, N3, and rapid eye movement), arousal, leg movements, tachycardia, bradycardia, oxygen desaturation, and number of obstructive and central sleep apnea events. The moment in which those phenomena occurred when associated with SB was also analyzed (before/after). Data were analyzed using 95% confidence intervals (α = 5%). RESULTS: A total of 661 mandibular movements were analyzed and classified as tonic (n = 372) or phasic (n = 289). The mean apnea-hypopnea index was 1.99 (SD = 1.27) events/h. The frequency of leg movements, microarousal, and tachycardia was increased in SB events when compared with the control window (P < .05). There was an increase in bradycardia frequency in the control window when compared with SB (in both tonic and phasic events). The frequency of obstructive and central apnea during SB was lower when compared with the other physiological phenomena. CONCLUSIONS: There is a difference in the physiological parameters evaluated in children with mild sleep apnea when comparing the 2 windows (SB and control). Sleep bruxism is associated with other physiological phenomena, such as leg movements, tachycardia, and microarousal. The use of a control window (where no mandibular activity was detected) was representative since it did not show activation of the sympathetic nervous system. CITATION: Bonacina CF, Soster LMSFA, Bueno C, et al. Sleep bruxism and associated physiological events in children with obstructive sleep apnea: a polysomnographic study. J Clin Sleep Med. 2024;20(4):565-573.

Magnetic resonance imaging evaluation of the disc morphology of temporomandibular joint in patients with severe hemophilia.

OBJECTIVES: This study aimed to assess the morphological differences in the articular disc (AD) between hemophilic patients and healthy individuals of the control group for further association with signs and symptoms. METHODS: Fourteen severe hemophilic patients had their AD evaluated by magnetic resonance imaging (MRI). The morphological findings were compared to those of a control group consisting of 14 healthy individuals. MRI was used to evaluate all the components of the temporomandibular (TMJ), including the AD, resulting in sequential T1-weighted parasagittal images. All the images were acquired with teeth in maximum intercuspation position. RESULTS: Morphological alterations showed significant statistical differences (P-value = 0.0068), whereas no statistical differences were found in the other variables, including TMJ pain, headache, bruxism and mouth opening limitation. In the group of non-hemophilic individuals, only two (14.29%) presented AD with non-biconcave features, whereas in the group of hemophilic patients, nine (64.29%) presented AD with a morphology other than biconcave. CONCLUSIONS: In patients with severe hemophilia, there seems to be a pattern of morphological alterations in the articular disc over time. The standard biconcave morphology of AD tends to change into other ones, particularly biplanar, hemiconvex and folded.

Associated factors and treatment options for sleep bruxism in children: an umbrella review.

Data on clinical management options for sleep bruxism in the primary dentition are inconclusive. This umbrella review aimed to synthesize the available evidence from systematic reviews (SRs) on the associated factors and treatment approaches for clinical management of sleep bruxism in children. A search was conducted in the MEDLINE/PubMed, Web of Science, Embase, and OpenGrey databases up to March 2022. SRs published on sleep bruxism in children containing data on associated factors or treatment outcomes were included. The AMSTAR-2 tool was used to assess the methodological quality of SRs. The search identified 444 articles, of which six were included. Sleep conditions, respiratory changes, personality traits, and psychosocial factors were the associated factors commonly identified. Treatments included psychological and pharmacological therapies, occlusal devices, physical therapy, and surgical therapy. All SRs included presented a high risk of bias. Overlapping of the included studies was considered very high. The best evidence available to date for the management of sleep bruxism in children is based on associated factors, with sleep duration and conditions, respiratory changes, as well as personality traits and psychosocial factors being the most important factors commonly reported by studies. However, there is currently insufficient evidence to make recommendations for specific treatment options.

Associated factors and treatment options for sleep bruxism in children: an umbrella review

Abstract Data on clinical management options for sleep bruxism in the primary dentition are inconclusive. This umbrella review aimed to synthesize the available evidence from systematic reviews (SRs) on the associated factors and treatment approaches for clinical management of sleep bruxism in children. A search was conducted in the MEDLINE/PubMed, Web of Science, Embase, and OpenGrey databases up to March 2022. SRs published on sleep bruxism in children containing data on associated factors or treatment outcomes were included. The AMSTAR-2 tool was used to assess the methodological quality of SRs. The search identified 444 articles, of which six were included. Sleep conditions, respiratory changes, personality traits, and psychosocial factors were the associated factors commonly identified. Treatments included psychological and pharmacological therapies, occlusal devices, physical therapy, and surgical therapy. All SRs included presented a high risk of bias. Overlapping of the included studies was considered very high. The best evidence available to date for the management of sleep bruxism in children is based on associated factors, with sleep duration and conditions, respiratory changes, as well as personality traits and psychosocial factors being the most important factors commonly reported by studies. However, there is currently insufficient evidence to make recommendations for specific treatment options.

Comparative in vitro study of intracanal Enterococcus faecalis reduction using photosensitizers in aPDT

Aim: To compare Enterococcus faecalis reduction after antimicrobial photodynamic therapy (aPDT) used with methylene blue, toluidine blue, tannin, and curcumin as photosensitizers, an adjunct to endodontic chemomechanical preparation (CMP) in root canals of human teeth. Methods: A total of 120 single-rooted teeth were divided into 6 groups (n = 20): G1- CMP and 2.5% sodium hypochlorite (NaOCl); G2- CMP and saline solution; G3- CMP, 2.5% NaOCl, and aPDT with 0.005% methylene blue; G4- CMP, 2.5% NaOCl, and aPDT with 0.005% toluidine blue; G5- CMP, 2.5% NaOCl, and aPDT with 0.005% tannin; and G6- CMP, 2.5% NaOCl, and aPDT with 0.005% curcumin. A portable semiconductor laser was used (660 nm, 100 mW, 1.8 J, 180s) in groups 1, 2, 3, 4, 5, and a blue LED light-curing (420-480 nm, 1200 mV/cm2 ) in G6. For all groups, a 5 min pre-irradiation time was applied. Samples were collected before (initial collection), immediately after (intermediate collection) and 7 days after CMP (final collection) for colony-forming unit (CFU) counting. The Kruskal-Wallis test and analysis of variance (ANOVA) were performed (p < 0.05; 95% confidence interval). Results: In between-group comparisons, there was no significant difference observed in the number of CFUs at the initial (p >< 0.001) and final collections (p >< 0.001) for G2 and G3. In within-group comparisons, the number of CFUs showed a decreasing trend in G4 (p = 0.007) and G5 (p = 0.001). Conclusion: Photosensitizers promoted E. faecalis reduction, with better results for tannin and curcumin. Alternative photosensitizers should be the focus of further studies.>< 0.05; 95% confidence interval). Results: In between-group comparisons, there was no significant difference observed in the number of CFUs at the initial (p < 0.001) and final collections (p >< 0.001) for G2 and G3. In within-group comparisons, the number of CFUs showed a decreasing trend in G4 (p = 0.007) and G5 (p = 0.001). Conclusion: Photosensitizers promoted E. faecalis reduction, with better results for tannin and curcumin. Alternative photosensitizers should be the focus of further studies.>< 0.001) and final collections (p < 0.001) for G2 and G3. In within-group comparisons, the number of CFUs showed a decreasing trend in G4 (p = 0.007) and G5 (p = 0.001). Conclusion: Photosensitizers promoted E. faecalis reduction, with better results for tannin and curcumin. Alternative photosensitizers should be the focus of further studies>< 0.001) for G2 and G3. In within-group comparisons, the number of CFUs showed a decreasing trend in G4 (p = 0.007) and G5 (p = 0.001). Conclusion: Photosensitizers promoted E. faecalis reduction, with better results for tannin and curcumin. Alternative photosensitizers should be the focus of further studies

Perfil dos endodontistas de uma metrópole brasileira quanto ao atendimento odontológico a pacientes com necessidades especiais / Profile of endodontists in a Brazilian metropolis regarding dental care for patients with special needs

O objetivo do estudo foi caracterizar o perfil dos endodontistas do estado de São Paulo, Brasil em relação ao tratamento odontológico depacientes com necessidades especiais (PNE). Um questionário onlinesobre capacitação do profissional e dados sobre o atendimento odontológico de PNEfoi enviado para 3.500 endodontistas registrados no Conselho Regional de Odontologia de São Paulo. Dentre os 138 profissionais que retornaram, 57,2% eram do sexo feminino; 34,8% estavam na faixa etária entre 31e 40 anos; 42,8% tinham entre 11 e20 anos de formados; e 38,4% possuíam 11 a 20 anos de especialidade. Apenas 22,5% eram capacitados para o atendimento de PNE, sendo que desses, 58,1% tiveram apenas aula teórica. Dos que não receberam capacitação na pós-graduação, 80,4% gostariam de ter recebido. Com relação ao interesse em cursos de atendimento a PNE após a especialização, observou-se que apenas 15,9% realizaram algum tipo de curso, a maioria apenas teórico. Em relação às dificuldades durante o atendimento de PNEa "falta de colaboração do paciente durante o atendimento" foi citada por 74,6%, a "insegurança devido àfalta de preparo profissional" por 55,0%. A análise da associação das variáveis pelo teste Qui-quadrado apontou que quanto maior o tempo de formação, menor essa dificuldade (p=0,0415). Os especialistas encontram mais dificuldades comparados aos que tem formação associada (mestrado e doutorado) (p=0,0369). Não houve associação significativa entre as dificuldades e o tipo de instituição de formação(pública ou privada) (p>0,05). O panorama atual da formação do endodontista não contempla o atendimento as pessoas com necessidades especiais (AU).

The aim of this study was to characterize the profile of endodontic professionals from the state of São Paulo, Brazil in relation to dental treatment for patients with special needs (PSN). An online questionnaire on professional training and data on PSN dental care was sent to 3,500 endodontic professionals registered with the São Paulo Regional Dental Council in 2017. Of the 138 returning professionals, 57.2% were female; 34.8% aged 31-40 years; 42.8% had 11-20 years since graduation; 38.4% had 11-20 years of endodontic specialization. Only 22.5% were trained to provide dental care to PSNs and of these, 58.1% had only theoretical classes. Of those who did not receive post-graduation training, 80.4% would like to have received it. Regarding the interest in PSN care courses after specialization, it was observed that only 15.9% performed some type of course, most of them theoretical only. Regarding difficulties during PSN care, "lack of patient collaboration during care" was mentioned by 74.6%, and "insecurity due to lack of professional preparation" by 55.0%. The analysis of the association of variables by the Chi-square test showed that the longer the training time, the lower the difficulty during PSN care (p=0.0415). Specialists find more difficulties compared to those with associated training (masters and doctorate) (p=0.0369). There was no significant association between difficulties in PSN care and typeof HEI (public or private) (p> 0.05). The current panorama of endodontic professional training does not seem to include care for patients with special needs (AU).

As relações interpessoais entre adolescentes: o teste sociométrico como recurso para superar conflitos e violências escolares / Social relationships between adolescents: the sociometric test as a resource for overcoming violence and conflict in schools / Las relaciones interpersonales entre adolescentes: el test sociométrico como recurso para la superación de conflictos y violencias en las escuelas

Este artigo tem por objetivo apontar o teste sociométrico como recurso capaz de subsidiar o trabalho do professor em sala de aula no acompanhamento das relações interpessoais entre adolescentes para mediar conflitos, ensinar-lhes a conviver e superar violências. O mapeamento foi realizado em uma turma do 6º ano do ensino fundamental de uma escola pública, com histórico de violências, na periferia de Brasília. O resultado do teste sociométrico demonstrou que a professora, desconhecendo os adolescentes e a origem dos conflitos nas relações interpessoais dos alunos, adotava medidas reativas por ensaio e erro, contribuindo para o ciclo das violências e consequentemente para o seu desestímulo profissional.

This paper aims to illustrate the sociometric test as a resource for supporting the work of teachers in the classroom in accompanying interpersonal relationships between adolescents, in order to mediate conflicts, to teach them how to live together, as well as overcoming violence. The test mapped social relationships detecting aversions and attractions in a 6th grade class of a public school known for violent occurrences in the suburbs of Brasília, Brazil. Its results revealed that the teacher, uninformed about the students and the reason for the conflicts in their interpersonal relationships adopted reactive measures by trial and error. This behavior contributed to the worsening violence, at the same time causing professional stress.

Este artículo objetiva destacar el test sociométrico como recurso para subsidiar el trabajo docente en clase en el acompañamiento de las relaciones interpersonales entre los adolescentes para mediar los conflictos, educarlos para la convivencia social y la superación de la violencia. El mapa de la tela de relaciones se diseñó en una clase de sexto grado de la educación primaria de una escuela pública, conocida por sus ocurrencias violentas y ubicada en la periferia urbana de Brasília, Brasil. Sus resultados indicaron que la maestra, al desconocer los estudiantes y las orígenes de los conflictos entre ellos, intentaba experimentar medidas reactivas en sus tentativas. Como consecuencia, el ciclo de violencia se incrementaba, lo que contribuía para su pérdida de interés en la profesión.