Temporomandibular disorder, body pain and systemic diseases: assessing their associations in adolescents

Abstract Painful temporomandibular disorders (TMD) in children and adolescents may impact negatively the individual´s life. The presence of comorbidities associated with TMD tends to increase the persistence of pain and to facilitate its chronification. Objective To investigate the presence of other painful conditions and systemic diseases and their association with painful TMD. Methodology In this cross-sectional study, 690 adolescents aged between 12-14 years old were evaluated through questionnaires and clinical examinations. Results Painful TMD was found in 16.2% of the sample, with a significant association with bronchitis (OR= 2.5; p=0.003) and asthma (OR=3.1; p=0.013), reported by the parents/legal guardians of the participants. Adolescents with regional and widespread pain were 2.7 (95% CI: 1.65-4.55) and 3.6 (95% CI: 1.29-10.14) more likely to also present painful TMD. Painful TMD was associated with a higher number of body pain sites in the last 12 months (4.26 vs. 2.90; p<0.001), as well as a higher number of systemic diseases (1.48 vs. 1.18; p=0.048), when compared to adolescents without painful TMD. Conclusion The findings of this study point out the importance of considering the presence of comorbid conditions in the diagnosis and management of painful TMD in adolescents. A multidisciplinary approach would contribute to better control of painful TMD and decrease its chronification risk.

Foliar application of plant growth regulators changes the physiological quality of crambe seeds

The application of plant growth regulators can manipulate the development of cultivated plants, and their physiological effects may be reflected in the physiological quality of the seeds. This study evaluated the effects of plant growth regulators (PGR) on the physiological quality of crambe seeds produced in the 2014 and 2015 harvests. During crop development, we applied two foliar sprayings of the following treatments: 1) control treatment with distilled water; 2) indole-3-acetic acid 100 mg L-1 (IAA); 3) 3-gibberellic acid P.A. 100 mg L-1 (GA3); 4) commercial PGR Stimulate® 6 mL L-1. The seeds were harvested and evaluated for water content, germination percentage and germination speed index (GSI), electrical conductivity and concentrations of leached Ca, Mg and K ions. Means were compared by Tukey ́s and Dunnett tests (p<0.05). Applying Stimulate® increased the germination percentage and the germination speed index, while IAA application showed an opposite effect, increasing the electrical conductivity of crambe seeds. Calcium leaching decreased with IAA application, and all regulators reduced K leaching. We therefore infer that the application of plant growth regulators influences the physiological quality of crambe seeds.

Parafunctional habits are associated cumulatively to painful temporomandibular disorders in adolescents

Abstract This cross-sectional study was designed to evaluate the effect of sleep bruxism, awake bruxism and parafunctional habits, both separately and cumulatively, on the likelihood of adolescents to present painful TMD. The study was conducted on a sample of 1,094 adolescents (aged 12-14). The presence of painful TMD was assessed using the Research Diagnostic Criteria for Temporomandibular Disorders, Axis I. Data on sleep bruxism, awake bruxism and parafunctional habits (nail/pen/pencil/lip/cheek biting, resting one's head on one's hand, and gum chewing) were researched by self-report. After adjusting for potential demographic confounders using logistic regression, each of the predictor variables (sleep bruxism, awake bruxism and parafunctional habits) was significantly associated with painful TMD. In addition, the odds for painful TMD were higher in the concomitant presence of two (OR=4.6, [95%CI=2.06, 10.37]) or three predictor (OR=13.7, [95%CI=5.72, 32.96]) variables. These findings indicate that the presence of concomitant muscle activities during sleep and awake bruxism and parafunctional habits increases the likelihood almost linearly of adolescents to present painful TMD.

Temporomandibular disorders among Brazilian adolescents: reliability and validity of a screening questionnaire

Temporomandibular disorders (TMD) screeners assume significant item overlap with the screening questionnaire proposed by the American Academy of Orofacial Pain (AAOP). Objective: To test the reliability and validity of the Portuguese version of AAOP questions for TMD screening among adolescents. Material and Methods: Diagnoses from Research Diagnostic Criteria for Temporomandibular Disorders (RDC/TMD) Axis I were used as reference standard. Reliability was evaluated by internal consistency (KR-20) and inter-item correlation. Validity was tested by sensitivity, specificity, predictive values, accuracy and receiver operating characteristic (ROC) curves, the relationship between the true-positive rate (sensitivity) and the false-positive rate (specificity). Test-retest reliability of AAOP questions and intra-examiner reproducibility of RDC/TMD Axis I were tested with kappa statistics. Results: The sample consisted of 1307 Brazilian adolescents (56.8% girls; n=742), with mean age of 12.72 years (12.69 F/12.75 M). According to RDC/TMD, 397 [30.4% (32.7% F/27.3% M)] of adolescents presented TMD, of which 330 [25.2% (27.6% F/22.2% M)] were painful TMD. Because of low consistency, items #8 and #10 of the AAOP questionnaire were excluded. Remaining items (of the long questionnaire version) showed good consistency and validity for three positive responses or more. After logistic regression, items #4, #6, #7 and #9 also showed satisfactory consistency and validity for two or more positive responses (short questionnaire version). Both versions demonstrated excellent specificity (about 90%), but higher sensitivity for detecting painful TMD (78.2%). Better reproducibility was obtained for the short version (k=0.840). Conclusions: The Portuguese version of AAOP questions showed both good reliability and validity for the screening of TMD among adolescents, especially painful TMD, according to RDC/TMD. .

Painful temporomandibular disorders, self reported tinnitus, and depression are highly associated / Disfuncao temporomandibular dolorosa, auto-relato de zumbido e depressao estao fortemente associados

Objective The aim of this study was to investigate the association among painful temporomandibular disorders (TMD), self reported tinnitus, and levels of depression. Method The sample consisted of 224 individuals with ages ranges from 18 to 76 years. The Research Diagnostic Criteria for Temporomandibular Disorders Axis I were used to classify TMD and Axis II were used for self reported tinnitus, and to score the levels of depression. The odds ratio (OR) with 95% confidence interval (CI) was applied. Results The presence of painful TMD without tinnitus was significantly associated with moderate/severe levels of depression (OR=9.3, 95%; CI: 3.44-25.11). The concomitant presence of painful TMD and tinnitus self-report increased the magnitude of the association with moderate/severe levels of depression (OR=16.3, 95%; CI, 6.58-40.51). Conclusion Painful temporomandibular disorders, high levels of depression, and self reported tinnitus are deeply associated. However, this association does not imply a causal relationship. .

Objetivo Investigar a associação entre disfunção temporomandibular (DTM) dolorosa, auto-relato de zumbido e níveis de depressão. Método A amostra foi composta por 224 indivíduos com idades de 18 a 76 anos. O Research Diagnostic Criteria for Temporomandibular Disorders , eixo I, foi usado para classificar a DTM e o eixo II para obtenção do auto-relato de zumbido e dos níveis de depressão. Para a análise dos dados, foi aplicado o teste odds ratio (OR) com intervalo de confiança (IC) de 95%. Resultado Somente a presença de DTM dolorosa estava significativamente associada aos níveis de depressão moderado/severo (OR=9,3, 95%; IC: 3,44-25,11). A presença concomitante de DTM dolorosa e auto-relato de zumbido aumentaram a magnitude da associação com os níveis de depressão moderado/severo (OR=16,3; 95% IC: 6,58-40,51). Conclusão Disfunção temporomandibular dolorosa, altos níveis de depressão e auto-relato de zumbido estão fortemente associados. Entretanto, o desenho do estudo não permite estabelecer uma relação causal entre essas três entidades. .

Sensibilidade dolorosa à palpação em pacientes com disfunção temporomandibular crônica / Sensibilidad dolorosa a la palpación en pacientes con disfunción temporomandibular crónica / Painful sensitivity to palpation in patients presenting with chronic temporomandibular dysfunction

Cefaléias primárias estão freqüentemente relacionadas à disfunção temporomandibular, sendo o aumento da sensibilidade dolorosa um achado comum nesses pacientes. Este estudo propôs investigar a sensibilidade dolorosa à palpação em pacientes com disfunção temporomandibular crônica, comparando grupos com presença ou ausência de cefaléias primárias. A disfunção temporomandibular e o tipo de cefaléia primária foram diagnosticados, respectivamente por meio dos critérios de diagnóstico para pesquisa das desordens temporomandibulares e por um questionário baseado na Classificação Internacional de Cefaléias (2004). A localização, avaliação e o agrupamento dos sítios musculares e articulares para palpação foram realizados segundo os critérios de diagnóstico para pesquisa das desordens temporomandibulares, considerando-se o temporal, masseter, articulação temporomandibular e sítios cervicais bilateralmente. A amostra foi composta por 213 (88,0 por cento) mulheres e 29 (12,0 por cento) homens, com faixa etária média de 37,41 anos. As médias do número de sítios positivos à palpação nos grupos sem cefaléia, cefaléia do tipo tensional, migrânea e cefaléia crônica diária e foram respectivamente: 12,43; 14,38; 15,21 e 15,62 (p= 0,107) (mínima 2 e máxima 22). Apenas para os sítios do músculo temporal foi detectada diferença estatisticamente significante entre os grupos de cefaléia quanto à sensibilidade dolorosa à palpação (p= 0,007). O número de sítios dolorosos não foi estatisticamente diferente entre os grupos estudados e apenas o músculo temporal demonstrou diferença estatisticamente significante quanto ao grau de dor à palpação(AU)

The cephalalgias are frequently associated with the temporomandibular disorders being common to find an increase of pain sensitivity in these patients. Thus, the objective of present study was to assess the sensitivity to palpation in patients presenting with chronic temporomandibular disorders comparing two groups one with headache and other without it, respectively. The temporomandibular disorders and the primary cephalalgias were diagnosed according the Diagnostic Criteria for the Research of Temporomandibular Disorders and by a questionnaire based on the International Classification of the Cephalalgias (2004). Location, assessment and grouping of muscular and articular areas for palpation were carried out according to the Diagnostic Criteria for above mentioned disorders, considering bilaterally the masseter muscle, the temporalis muscle, the cervical region and the temporomandibular joint. Sample included 213 (88.0 percent) of women and 29 (12.0 percent) men with a mean age of 37.41 years. The mean of number of zones positive to palpation in the groups without headaches, tension headache, migraine and daily chronic headache were: 12.43, 14.38, 15.21 and 15.62 (p= 0.107) (min 2 max 22). The areas of temporalis muscle showed significant differences among groups (p= 0.007). The number of painful points was not statistically different among groups and only in the temporalis muscle there were differences with statistical significant to palpation(AU)

Las cefaleas están frecuentemente relacionadas con los trastornos temporomandibulares, por esta razón es común encontrar un aumento de sensibilidad al dolor en los pacientes que padecen dicha enfermedad. El objetivo de este estudio fue evaluar la sensibilidad a la palpación en pacientes con trastornos temporomandibulares crónicos. Se realizó una comparación entre 2 grupos con cefalea y sin cefalea respectivamente. Los trastornos temporomandibulares y las cefaleas primarias, fueron diagnosticados mediante los criterios diagnósticos para la investigación de los trastornos temporomandibulares y por un cuestionario basado en la clasificación internacional de cefaleas en el año 2004. La localización, evaluación y agrupación de las áreas musculares y articulares para la palpación, se realizaron de acuerdo a los criterios diagnósticos para la investigación de los trastornos temporomandibulares, se tuvo en cuenta el músculo masetero, el temporal, la región cervical y la articulación temporomandibular bilateralmente. La muestra fue de 213 mujeres (88,0 por ciento) y 29 hombres (12,0 por ciento), con una media de edad de 37,41 años. La media del número de zonas positivas a la palpación en los grupos sin cefalea, dolor de cabeza de tipo tensional, migraña y cefalea crónica diaria fueron: 12,43; 14,38; 15,21; 15,62 y (p= 0,107) (mínimas 2 y máximas 22). Las áreas del músculo temporal demostraron diferencias significativas entre los grupos (p= 0,007). El número de puntos dolorosos no fue estadísticamente diferente entre los grupos y solo en el músculo temporal se observó diferencias estadísticamente significativas a la palpación(AU)

Clinical features of the sleep bruxism and gastroesophageal reflux association deserve professional attention / Características clínicas da associação entre o bruxismo do sono e o refluxo gastroesofágico merecem atenção profissional

Introdução: Bruxismo tem sido definido como uma atividade parafuncional oral que consiste em apertar e/ou ranger os dentes durante o sono ou na vigília. Além do bruxismo do sono (BS), outros movimentos orofaciais também podem, esporadicamente, ocorrer durante o sono. A regurgitação ocasional e a queimação no peito devido ao refluxo gastroesofágico (RGE) são freqüentes sintomas relatados pela população em geral. A RGE refere-se à presença de sinais e sintomas secundários, com ou sem sinais de lesões na mucosa do esôfago. Os dentistas são, muitas vezes, os profissionais da saúde que primeiro diagnosticam o RGE por meio da observação de suas manifestações orais. Objetivo: Assim, o objetivo do presente artigo foi discutir os procedimentos clínicos e diagnósticos em dois pacientes com BS e RGE, contribuindo assim para a difusão do conhecimento sobre a interação dessas duas entidades. Recomenda-se aos dentistas estarem atentos para identificar os primeiros sinais de RGE que se manifestam na cavidade oral. Conclusão: Neste ponto, destaca-se a importância de tratar o paciente como um todo, esforçando-se para identificar outras fontes de problema que poderiam atuar como fatores agravantes destas condições.

Introduction: Bruxism has been defined as an oral parafunctional activity that includes clenching and/or grinding the teeth while asleep or awake. In addition to sleep bruxism (SB), various other orofacial movements sporadically occur during sleep. Occasional regurgitation and heartburn due to gastroesophageal reflux (GER) are frequent in the general population. GER refers to the presence of symptoms that are secondary to the reflux of gastric content through the esophagus with or without signs of esophageal mucosal lesions. Dentists are often the first health care professionals to diagnose GER through observation of its oral manifestation. Objective: The aim of the present case reports was to discuss the diagnosis and clinical procedures followed in two patients with SB and GER, thereby contributing to the dissemination of knowledge about these two entities. We therefore recommend dentists to be alert to identifying the first signs of GER that appear in the oral cavity. Conclusion: At this point, we highlight the importance of treating the patient as a whole, in an endeavor to identify other sources of the problems that could contribute as factors aggravating these conditions.

Estudo da associação entre bruxismo do sono, disfunção temporomandibular e cefaleias primárias / Study of association among sleep bruxism, temporomandibular disorders and primary headaches

O Bruxismo do Sono (BS) é uma atividade oral caracterizada pelo ranger e/ou apertar dos dentes durante o sono, usualmente associado com microdespertares. Muitos estudos têm investigado a relação entre Bruxismo do Sono e Disfunção Temporomandibular (DTM), mas os resultados não são conclusivos e a inter-relação entre as duas entidades ainda não foi explicada. Além disso, os estudos também mostram forte associação entre Bruxismo do Sono e Cefaleias, mas ainda não há conclusão definitiva. O objetivo do presente estudo foi estimar o risco da ocorrência de DTM dolorosa e cefaleias primárias em pacientes com ou sem bruxismo do sono. A amostra foi composta por 301 indivíduos (253 mulheres e 48 homens), com a idade variando de 18 a 76 anos (Média de idade de 37,45 anos). O Research Diagnostic Criteria for Temporomandibular Disorders (RDC/TMD) foi usado para o diagnóstico e classificação da DTM. O Bruxismo do Sono foi diagnosticado de acordo com os critérios clínicos propostos pela American Academy of Sleep Medicine e a cefaleia foi diagnosticada por meio de um questionário baseado na Classificação Internacional de Cefaléias (CIC, 2004). A amostra foi dividida em 4 grupos: 1) Pacientes sem DTM dolorosa e sem BS (15,9%); 2) Pacientes sem DTM dolorosa e com BS (6,3%); 3) Pacientes com DTM dolorosa e sem BS (24,6%); 4) Pacientes com DTM dolorosa e com BS (53,2%). Os resultados mostraram que os pacientes com bruxismo do sono apresentam um risco aumentado para a ocorrência de DTM dolorosa quando comparado aos pacientes sem bruxismo do sono (OR=5,5 95% IC: 3,3-9,9, p<0,001), sendo esse risco significativo somente para dor miofascial (OR= 5,4 95% IC: 1,6-18,2, p=0,0047). Houve um risco aumentado para migrânea nos grupos 3 (p=0,0003, OR= 5,3, IC: 2,2-12,9) e 4 (p<0,0001, OR=11,7, IC: 5,0-27,3). Para cefaleia do tipo tensional houve risco aumentado somente para o grupo 4 (p=0,0007, OR=5,9, IC: 2,2-15,8). Não foi possível estabelecer uma relação de causa e efeito entre BS, DTM e cefaleias primárias. Entretanto, o BS parece ser um fator de risco para a DTM dolorosa, sendo essa, por sua vez, um fator de risco para a ocorrência das cefaleias primárias

Sleep bruxism is an oral activity characterized by grinding or clenching of the teeth during sleep, usually associated with sleep arousals. Many studies have investigated the relationship between sleep bruxism and Temporomandibular Disorders (TMD), but the findings are not conclusive and their inter-relationship is still far from being explained. Furthermore, studies also show a strong association between BS and headaches, but were not yet established any definitive conclusions. The aim of this study was to estimate the risk of occurrence of painful temporomandibular disorders and primary headaches in patients with or with no sleep bruxism. The sample consisted of 301 individuals (253 women and 48 men), with ages varying from 18 to 76 years (average of 37.45 years). The Research Diagnostic Criteria for Temporomandibular Disorders (RDC/TMD) were used to diagnose TMD patients, SB was diagnosed by clinical criteria proposed in the literature and HA were diagnosed based on the International Classification of Headache Disorders. The sample was divided into four groups: 1) Patients without painful TMD and without SB (15,9%); 2) Patients without painful TMD and with SB (6,3%); 3) Patients with painful TMD and without SB (24,6%) and 4) Patients with painful TMD and SB (53,2%). The results showed that patients with sleep bruxism had an increased risk for the occurrence of painful temporomandibular disorders compared to patients with no sleep bruxism (OR=5.5, 95% CI: 3.0-9.9, p<0,001), this risk was significant only for miofascial pain (OR= 5.4, 95% CI: 1.6-18.2, p=0,0047). There was an increased risk for migraine in groups 3 (OR= 5.3, 95% CI: 2.2-12.9, p=0.0003) and 4 (OR=11.7, 95% CI: 5.0-27.3, p<0.0001). For tension type headache had an increased risk only for group 4 (OR=5.9, 95% CI: 2.2-15.8, p=0.0007). Unable to establish a cause and effect relationship between sleep bruxism, temporomandibular disorders and primary headaches. However, sleep bruxism seems to be a risk factor for painful temporomandibular disorders, and this, in turn, a risk factor for the occurrence of primary headache