Treatment of myofascial pain with a rapid laser therapy protocol compared to occlusal splint: A double-blind, randomized clinical trial.

OBJECTIVE: To compare the effect of a rapid low-level laser therapy (LLLT) protocol to Michigan occlusal splint in the treatment of myofascial pain, as well as to evaluate their impact on Oral Health-Related Quality of Life (OHRQoL). METHODS: Thirty participants were randomly allocated into three groups: G1: occlusal splint (n = 11), G2: LLLT (n = 10), and G3: LLLT placebo (n = 9). LLLT and placebo were applied in the points of pain upon palpation. RESULTS: G1 presented improvement in pain (p = 0.014) and in the diagnosis of myofascial pain (p = 0.008), while G2 and G3 did not. Regarding OHRQoL, G1 and G2 presented significant improvement (p = 0.005, in both), whereas, G3 did not. CONCLUSION: Michigan occlusal splint was effective in reducing pain and improving OHRQoL. Treatment with the rapid LLLT protocol only provided an improvement in OHRQoL.

Dor e fatores associados em pacientes atendidos em um serviço de urgência odontológica no sul do Brasil / Pain and associated factors in patients attending an emergency dental service in southern Brazil

O objetivo deste estudo transversal foi avaliaro desfecho dor e fatores associados em pacientes atendidos em um serviço de urgência odontológica no sul do Brasil. Foram avaliados 137 prontuários provenientes de um projeto de extensão para capacitação em atendimento odontológico de urgência da Universidade Federal de Santa Maria (Santa Maria/RS), referentes ao período de abril de 2017 a dezembro de 2018. Os dados contidos na ficha clínica, autorrelatados pelos pacientes, foram coletados e variáveis relacionadas às características socioeconômicas, médicas e odontológicas foram submetidas à análise estatística descritiva e regressão de Poisson multivariada. A prevalência de dor nestes pacientes foi de 65,2%e a hipótese diagnósticamais prevalente foi de pulpite aguda irreversível (46,2% dos casos). A procura por atendimento foi maiorna faixa etária entre 40-59 anos (48,6%), no sexo feminino (64%), em pacientes sem nível superior (85,3%) e os dentes mais frequentemente tratados foram os posteriores (82,7%). Houve associação entre a presença de dor e variáveis médicas, sendo queos pacientes com mais de duas doençassistêmicas apresentaram maior prevalência de dor. O preenchimento inadequado dos prontuários odontológicos foi um achado comum, o que pode prejudicar o estabelecimento do perfil epidemiológico destes pacientes e o planejamento dos atendimentos futuros de forma eficiente, além de poder acarretar problemas jurídicos (AU).

This cross-sectional study aimed to evaluate the pain outcome and associated factorsin patients attending an emergency dental service in southern Brazil. One hundred and thirty-seven (137) patient records from an extension project for emergency dental care training at the Universidade Federal de Santa Maria (Santa Maria, RS, Brazil), relative to the period from April 2017 to December 2018, were evaluated. The data in the records, self-reported by the patients, were collected, and variables related to socioeconomic, medical and dental characteristics were subjected to descriptive statistical analysis and multivariate Poisson regression. The prevalence of pain in these patients was 65.2%, and the most prevalent diagnostic hypothesis was irreversible acute pulpitis (46.2% of the cases). The demand for care was greater in the age group between40-59 years (48.6%), in women (64%), in patients without university education (85.3%), and posterior teeth were the most frequently treated (82.7%). There was an association between the presence of pain and medical variables, being that patients with morethan two systemic diseases had a higher prevalence of pain. The inadequate completion of dental records was a common finding, which can impair the establishment of the epidemiological profile of these patients and the efficient planning of future dental care services, as well as cause legal problems (AU).

Endodontic complications associated with orthodontic temporary anchorage devices: A systematic review of human studies.

This review, registered in PROSPERO (CRD42018102582), assessed the effect of temporary anchorage device placement on endodontic complications. A search strategy was followed to identify studies where any temporary anchorage devices contacted or were in proximity to tooth roots in humans. Studies with low possibility of bias and published in English or Latin-character languages were considered for inclusion. Ten studies were identified; five case reports, one clinical study and four studies with intentional injury, totalling 736 temporary anchorage devices in 327 patients. Complications may ensue following temporary anchorage device placement, whether or not root contact occurs. Chronic apical periodontitis developed when there was root injury involving the pulp; necrosis can also occur. When damage was limited to the periodontal ligament, cementum or dentine, repair occurred, normally within 12 weeks. Clinicians should be aware of the potential for endodontic complications during temporary anchorage device placement, as well as during orthodontic treatment.

Validation of self-reported history of root canal treatment in a southern Brazilian subpopulation.

The aim of this study was to assess self-reported history of root canal treatment (SRHRCT) as a method for detecting the presence of root canal treatment (RCT) and apical periodontitis (AP) in a southern Brazilian subpopulation. In this cross-sectional study, 136 military police officers from the city of Porto Alegre, Brazil, were included. The participants were interviewed and full-mouth periapical radiographs were taken. A calibrated examiner determined the presence of RCT and AP by applying standardized criteria. The diagnostic accuracy of SRHRCT was calculated separately for RCT and AP. Accuracy, sensitivity, specificity, positive and negative predictive values (+PV and -PV), efficiency, and positive and negative likelihood ratios (+LR and -LR) were estimated. The mean age of the participants was 34.1 ± 10.4 years and 88.2% were males. Overall, SRHRCT demonstrated high sensitivity and specificity for RCT, but not for AP: sensitivity (RCT = 0.960, AP = 0.757) and specificity (RCT = 0.835, AP = 0.631). The estimated values for PV and LR were: +PV (RCT=0.777, AP=0.396), -PV (RCT = 0.972, AP = 0.890), +LR (RCT = 5.853, AP = 2.057), and -LR (RCT = 0.046, AP = 0.383). SRHRCT proved to be a good predictor of the presence of RCT, but a weak predictor of AP in this subpopulation.

Validation of self-reported history of root canal treatment in a southern Brazilian subpopulation

Abstract The aim of this study was to assess self-reported history of root canal treatment (SRHRCT) as a method for detecting the presence of root canal treatment (RCT) and apical periodontitis (AP) in a southern Brazilian subpopulation. In this cross-sectional study, 136 military police officers from the city of Porto Alegre, Brazil, were included. The participants were interviewed and full-mouth periapical radiographs were taken. A calibrated examiner determined the presence of RCT and AP by applying standardized criteria. The diagnostic accuracy of SRHRCT was calculated separately for RCT and AP. Accuracy, sensitivity, specificity, positive and negative predictive values (+PV and -PV), efficiency, and positive and negative likelihood ratios (+LR and -LR) were estimated. The mean age of the participants was 34.1 ± 10.4 years and 88.2% were males. Overall, SRHRCT demonstrated high sensitivity and specificity for RCT, but not for AP: sensitivity (RCT = 0.960, AP = 0.757) and specificity (RCT = 0.835, AP = 0.631). The estimated values for PV and LR were: +PV (RCT=0.777, AP=0.396), -PV (RCT = 0.972, AP = 0.890), +LR (RCT = 5.853, AP = 2.057), and -LR (RCT = 0.046, AP = 0.383). SRHRCT proved to be a good predictor of the presence of RCT, but a weak predictor of AP in this subpopulation.

Canal preparation and filling techniques do not influence the fracture resistance of extensively damaged teeth.

The purpose of this study was to assess the fracture resistance of extensively damaged teeth after two root canal preparation techniques (hand and rotary files) and after two filling techniques (active and passive compaction). Sixty-eight maxillary canines roots with an apical diameter equal to that of a #25 K-file were embedded in acrylic resin and the periodontal ligament was simulated by using a polyether impression material. The roots were randomly distributed into four groups (n=17): hand preparation and active compaction (HA), hand preparation and passive compaction (HP), rotary preparation and active compaction (RA), and rotary preparation and passive compaction (RP). All roots were restored with glass fiber post and metallic crown. The specimens were mechanically cycled (500,000 cycles, 45 °, 37 °C, 133 N, 2 Hz) and then subjected to a fracture resistanhe fracture resistance values ranged between 621.15 N (HP) and 785.71 N (HA). However, the Kruskal-Wallis test did not reveal differences in the fracture ce test. A single blinded examiner analyzed the external root surface and classified the failure pattern as favorable or unfavorable. Tresistance values among the four groups (p =0.247). Under the tested conditions, root canal preparation and filling techniques had no influence on the fracture resistance of extensively damaged teeth restored with fiber post and metallic crown.

Canal Preparation and Filling Techniques do not Influence the Fracture Resistance of Extensively Damaged Teeth

The purpose of this study was to assess the fracture resistance of extensively damaged teeth after two root canal preparation techniques (hand and rotary files) and after two filling techniques (active and passive compaction). Sixty-eight maxillary canines roots with an apical diameter equal to that of a #25 K-file were embedded in acrylic resin and the periodontal ligament was simulated by using a polyether impression material. The roots were randomly distributed into four groups (n=17): hand preparation and active compaction (HA), hand preparation and passive compaction (HP), rotary preparation and active compaction (RA), and rotary preparation and passive compaction (RP). All roots were restored with glass fiber post and metallic crown. The specimens were mechanically cycled (500,000 cycles, 45°, 37°C, 133 N, 2 Hz) and then subjected to a fracture resistance test. A single blinded examiner analyzed the external root surface and classified the failure pattern as favorable or unfavorable. The fracture resistance values ranged between 621.15 N (HP) and 785.71 N (HA). However, the Kruskal-Wallis test did not reveal differences in the fracture resistance values among the four groups (p =0.247). Under the tested conditions, root canal preparation and filling techniques had no influence on the fracture resistance of extensively damaged teeth restored with fiber post and metallic crown.

O objetivo deste estudo foi avaliar a resistência à fratura de dentes amplamente destruídos após duas técnicas de preparo (limas manual e rotatória) e após duas técnicas obturadoras (compactação ativa e passiva). Sessenta e oito raízes de caninos superiores com diâmetro apical igual a uma lima K #25 foram embutidas em resina acrílica e o ligamento periodontal foi simulado utilizando um material de moldagem à base de poliéter. As raízes foram distribuídas aleatoriamente em quatro grupos (n=17): preparo manual e compactação ativa (MA), preparo manual e compactação passiva (MP), preparo rotatório e compactação ativa (RA) e preparo rotatório e compactação passiva (RP). Todas as raízes foram restauradas com pino de fibra de vidro e coroa metálica. Os espécimes foram ciclados mecanicamente (500.000 ciclos, 45°, 37°C, 133 N, 2 Hz) e depois submetidos ao teste de resistência à fratura. Um único examinador cego analisou a superfície externa das raízes e classificou o padrão de falha em favorável ou desfavorável. Os valores de resistência à fratura variaram entre 621,15 N (MP) e 785,71 N (MA). Entretanto, o teste de Kruskal-Wallis não revelou diferença nos valores de resistência à fratura entre os quatro grupos (p=0,247). Diante das condições testadas, as técnicas de preparo e de obturação do canal radicular não influenciam na resistência à fratura de dentes amplamente destruídos restaurados com pino de fibra de vidro e coroa metálica.