Can treatment with chondroitin and glucosamine sulphate prevent changes in the articular disc caused by temporomandibular joint osteoarthritis?

BACKGROUND: Chondroitin and glucosamine sulphates (CGS) are considered structure-modifying drugs and have been studied in the prevention, delay or reversal of structural morphological changes in joints caused by osteoarthritis. OBJECTIVE: The aim of the present study was to investigate the action of CGS on the progression of chemically induced osteoarthritis in the temporomandibular joint (TMJ) of rabbits by evaluating the serum levels of tumour necrosis factor (TNF-α) and collagen in the articular discs. MATERIALS AND METHODS: A sample of 36 male rabbits was divided into three groups: control (CG), osteoarthritis (OG) and treatment (TG). The disease was induced by intra-articular injection of sodium monoiodoacetate (10 mg/mL) in the OG and TG groups bilaterally. After 10 days, the TG animals received subcutaneous injection of chondroitin sulphates and glucosamine (7.5 mg/kg) and the OG and CG received saline solution (50 µL). Euthanasia times were subdivided into 40 and 100 days. Collagen quantification was performed by biochemical and histological analysis and for the quantification of serum levels of TNF-α, an enzyme immunoassay was used. RESULTS: The TG showed an increase in the collagen area of the articular disc when compared to the CG and the OG. The increase collagen concentration in the discs did not show a statistically significant difference between the groups. Post-treatment TNF-α levels were significantly lower in TG compared to OG. CONCLUSIONS: The results indicate that CGS treatment delayed the degeneration of the collagen in the TMJ articular disc and reduced serum TNF-α levels, indicating a preventive effect on OA progression.

Modified Endaural Approach With a Peripheral Dissection of the Superficial Musculoaponeurotic System to Access the Temporomandibular Joint to Prevent Facial Nerve Injury.

The purpose of this study was to assess the effects of protecting the facial nerve with a modified endaural approach with a peripheral dissection of the superficial musculoaponeurotic system to access the temporomandibular joint which allows an excellent operative field of visualization, multiple surgical procedures of the temporomandibular joint, and general care which improves the immediate postoperative period, making this a less morbid surgery. This study included 33 patients (39 sides) who underwent surgical treatment for disorders of the temporomandibular joint from the years 2021 to 2023 at the maxillofacial department of the clinic "Colsanitas" located in Bogota, Colombia. Therapeutic results were evaluated by postoperative facial nerve injury, with the House-Brackman scale; every patient was examined for adequate facial musculature function immediately after surgery. Notably, zero patients presented facial nerve injury. These results imply that the modified endaural approach with a peripheral dissection of the superficial musculoaponeurotic system to access the temporomandibular joint reduces the incidence of facial nerve injuries, improves operative site exposure, and lowers the frequency of complications.

Affective relationships as predictors of TMD symptoms in young adults / Relações afetivas como preditoras de sintomas de DTM em adultos jovens

Abstract Introduction Orofacial pain is a critical TMD symptom that can influence physical and social capacity. Objective To evaluate the association of temporomandibular disorders (TMD) symptoms with affective relationships and demographic variables in young adults. Material and method A cross-sectional study involving 395 young adults was developed. Diagnostic Criteria for TMD, anxiety, and depression were collected from questionnaires. The Dental Health Component of the Index of Orthodontic Treatment Need measures the orthodontic treatment need. Questionnaires also contained questions related to the previous orthodontic treatment. Logistic regression models were adjusted, estimating crude odds ratio with the 95% confidence intervals. The variables with p<0.20 in the analyses were assessed in a multiple logistic regression model, remaining with p≤0.10. Result There was no significant association of TMD symptoms with sex, age, medication use for pain, previous orthodontic treatment, orthodontic treatment need, anxiety, and depression (p>0.05). Individuals without an affective relationship are 1.78 (95%CI: 0.99-3.17) times more likely to report TMD symptoms. Conclusion Affective relationships showed an association with TMD symptoms in young adults.

Resumo Introdução A dor orofacial é um sintoma crítico da DTM que pode influenciar a capacidade física e social. Objetivo Avaliar a associação dos sintomas das desordens têmporomandibulares (DTM) com as relações afetivas e variáveis demográficas em adultos jovens. Material e método Estudo transversal envolvendo 395 adultos jovens foi realizado. Os critérios diagnósticos para DTM, ansiedade e depressão foram coletados a partir de questionários. O Componente de Saúde Bucal do Índice de Necessidade de Tratamento Ortodôntico mensurou a necessidade de tratamento ortodôntico. Os questionários também continham questões relacionadas ao tratamento ortodôntico anterior. Modelos de regressão logística foram ajustados, estimando odds ratio bruto com os intervalos de confiança de 95%. As variáveis com p<0.20 nas análises foram avaliadas em modelo de regressão logística múltipla, permanecendo as variáveis com p≤0.10. Resultado Não houve associação significativa dos sintomas de DTM com sexo, idade, uso de medicamentos para dor, tratamento ortodôntico prévio, necessidade de tratamento ortodôntico, ansiedade e depressão (p>0.05). Indivíduos sem relacionamento afetivo têm 1.78 (IC95%:0.99-3.17) vezes mais chance de relatar sintomas de DTM. Conclusão Os relacionamentos afetivos mostraram associação com os sintomas de DTM em adultos jovens.

Poloxamer micellar system for intra-articular injection of 15-deoxy-Δ12,14-prostaglandin J2 with improved bioavailability and anti-inflammatory properties in the temporomandibular joint of rats.

Painful conditions of the temporomandibular joint (TMJ) are challenging to manage and most attempts often result in unsatisfactory outcomes. In such context, nanocarrier systems, such as polymeric micelles, have been showing encouraging results in solving therapeutic limitations. Poloxamers are widely used, especially PL 407, because of their high biocompatibility and approval by the Food and Drug Administration (FDA) for clinical use. 15-deoxy-Δ12,14-prostaglandin J2 (15d-PGJ2) has shown important antinociceptive and anti-inflammatory activity. The present study evaluated the efficacy and viability of the micellar system of PL-15dPGJ2 in a formalin-induced acute pain model in the temporomandibular joint of rats. The PL-15dPGJ2 was prepared and characterized. The animals were pretreated with an intra-articular injection of PL-15dPGJ2 followed by the formalin challenge. The nociceptive response was evaluated at different time-periods and the periarticular tissue and articular wash were collected for analysis. We found that intra-articular injection of PL-15d-PGJ2 produced pain relief at lower concentrations and in a sustained manner compared with free 15d-PGJ2. Moreover, a strong anti-inflammatory effect was observed with decreased levels of key pro-inflammatory cytokines and modulation of the leukocyte migration process. Our findings suggest that 15d-PGJ2 combined with a poloxamer micellar system provided clinical relevance in terms of bioavailability, long-lasting effect, and safe dosage. The formulation investigated herein is a promising micellar carrier system for managing pain conditions of the TMJ.

Pediatric Mandibular Condylar Fractures With Concomitant Cervical Spine Injury: A Treatment Protocol for Prevention of Temporomandibular Joint Ankylosis.

In pediatric patients with mandible fractures and concomitant cervical spine injury (CSI), treatment strategies may occasionally compete: condylar fractures require functional therapy with range of motion exercises of the temporomandibular joint (TMJ), while CSI requires neck immobilization. The authors report the case of a child presenting with bilateral condylar head fractures, a right parasymphyseal fracture, and concomitant CSI treated with cervical collar immobilization, who ultimately developed TMJ ankylosis. Here, the authors review mandibular condylar fracture management and suggest an approach for the pediatric patient presenting with condylar fractures and concomitant CSI requiring immobilization. To preserve range of motion at the TMJ, it is critical to prevent external restriction by prolonged cervical collar use. Instead, these patients benefit from a protocol utilizing conventional halo or noninvasive, pinless halo cervical spine stabilization. Without limitation of the TMJ, condylar fracture rehabilitation and healing may proceed unhindered.

Effect of interocclusal appliance on bite force, sleep quality, salivary cortisol levels and signs and symptoms of temporomandibular dysfunction in adults with sleep bruxism.

OBJECTIVE: The purpose was to evaluate the effect interocclusal appliance therapy on bite force (BF), sleep quality and salivary cortisol levels in adults with SB diagnosed by polysomnography. As a secondary aim, signs and symptoms of temporomandibular dysfunction (TMD) were evaluated. DESIGN: Forty-three adults (19-30 y/o) were divided into two groups: experimental group (GSB), composed of 28 subjects with SB, and control group (GC), without SB and TMD (n=15). GSB was treated with stabilization interocclusal splint and evaluated at time intervals: before (baseline), one month (T1) and two months (T2) after therapy began, to collect data related to BF, sleep quality (Pittsburgh Sleep Quality Index), salivary cortisol levels and TMD. GC was also examined three times and received no therapy. Data were analysed by means of normality tests, t-test/Mann-Whitney and One-way ANOVA repeated measures (Tukey post-test). Two-way ANOVA test for repeated measures was applied to verify the effect time*group interaction on the variance of each dependent variable (α=0.05). RESULTS: GSB showed an increase in BF and a positive effect on muscular symptomatology, range of mandibular movements and sleep quality; in GC these parameters did not differ. Cortisol concentration decreased between baseline and T1 in GSB (F(1,31)=4.46; test power=62%; p=0.017). The variance observed for BF, TMD and sleep quality among time points was dependent on the group (moderate effect size: partial Eta square >0.16; test power >80%). CONCLUSIONS: The results suggested that short-term interocclusal appliance therapy had a positive effect on BF, temporomandibular symptomatology, sleep quality and salivary cortisol levels in adults with SB.

Baropodometria dinâmica de atletas remadores, com sinais e sintomas de disfunção temporomandibular, pré e pós tratamento, com placa oclusal estabilizadora e exercício terapêutico de movimento mandibular: estudo piloto / Dynamic baropodometry in rowing athletes refering signs and symptoms of temporomandibular joint dysfunction before and after using an occlusal splint associated to therapeutic mandibular exercise: pilot study

A desordem temporomadibular em atletas da modalidade do remo é uma temática ainda pouco abordada na literatura, muito embora se tenha conhecimento que a biomecânica do gesto esportivo possa provocar dores lombares, fratura de costela devido ao estresse, além de dores cervicais provenientes do desprendimento de força, para atingir grande velocidade e manutendo o equilíbrio por um longo tempo. O presente estudo tem como objetivo analisar, por meio da baropodometria dinâmica, a ação da placa oclusal estabilizadora associada ao exercício terapêutico de movimento mandibular em atletas remadores diagnosticados como portadores de desordem temporomandibular (DTM). Estudos prévios demonstram que um dispositivo intraoclusal (placa oclusal estabilizadora) tem ação significante sobre o sistema de manutenção do equilíbrio corporal na postura estática. Trinta indivíduos remadores apresentaram-se como voluntários com queixa de dor, sendo 10 deles (40% homens e 60% mulheres), com idade entre 24 e 35 anos foram diagnosticados com DTM por meio do preenchimento do questionário RDC/TMD e de exame clínico. O presente estudo piloto foi caracterizado por ser um ensaio clínico, randomizado, controlado, prospectivo e de intervenção. Imediatamente após aplicação do questionário e do exame clínico, todos os indivíduos realizaram testes de

baropodometria estática e dinâmica. Após esta etapa, realizou-se a randomização dos grupos por meio de software online gratuito (www.random.org) que determinou os integrantes do grupo controle, denomindado de Grupo Exercício (GE) e grupo teste denominado de Grupo Placa (GP). Ambos os grupos receberam orientação para a realização do exercício terapeutico de movimento mandibular. Definidos os integrantes do GP, foram realizados agendamento para a realização da etapa de confecção da placa oclusal. Os grupos foram monitorados por 12 semanas e após este período foram reavaliados segundo os mesmos parâmetros da etapa inicial. A análise estatísitca foi realizada utilizando o modelo ANOVA (normalidade e homoscedasticiodade),teste T-Student e teste não paramétrico de Wilcoxon. Os resultados apresentaram significância estatística na redução da dor e aumento da amplitude articular da articulação temporomandibular (ATM) no GP (p<0,05). Não foi observada significância estatísitica na análise da pressão plantar dinâmica, justificado pelo fato da insuficiência do número de invidíduos da amostra. Concluiu-se que o uso da placa oclusal foi eficaz no tratamento da DTM pela redução do quadro doloroso, entretanto, uma amostragem maior se faz necessária pra a verificação da integração entre sistema estomatognático e postural na dinâmica da marcha.

Temporomadibular joint disorder (TMJD) in rower athletes has still few studies over this theme, where the biomechanics of athletic gesture points can produce low back pain, rib stress fractures and cervical pain as resulting from power requirement to obtain high speed and body balance for repeatedly long period exercises. The aim of this study was to analyze through dynamic plantar pressure the effects of occlusal splint and therapeutic exercise of mandibular movement in rowers diagnosed as suffering from TMJD. Previous studies have shown that the occlusal splint has significant action to keep the system of body balance in standing position. 30 rower athletes came as volunteers with pain symptoms, and 10 individuals, 40% men ande 60% women, aged between 24 and 35 years, were diagnosed with TMJD through completion of the RDC/TMD questionnaire and clinical examination. The research was performed by a randomized controlled prospective clinical study besides intervention. Immediately after the questionnaire application and clinical examination, all individuals performed tests of static and dynamic baropodometry. After this procedure, the groups were randomized by using a free online software (www.random.org) which determined the

members of control group, named Exercise Group (EG) and test group called Oclusal Splint Group (OSG). Both groups received guidance for performing only therapeutic exercise of mandibular movement. The OSG were scheduled for the completion of preparation stage for occlusal splint. All groups were monitored for 12 weeks and after this period were evaluated according to the same parameters of the initial step. Statistic analysis was performed by using ANOVA model (normal and homoscedasticity), t-Student test and Wilcoxon nonparametric test. The results showed statistical significance to pain relief and increase of amplitude range of jaw joint in OSG (p < 0.05). No statistical significance was observed in the analysis of dynamic plantar pressure, justified by insufficient statistic population. In conclusion the use of occlusal splint was effective in the treatment of TMJD to pain relief, however, a larger sampling is necessary to verify the integration among stomatognatic system, posture and and gait dynamics analyzes.

Perception of the relationship between TMD and orthodontic treatment among orthodontists.

INTRODUCTION: The consensus about the relationship between TMD and orthodontic treatment has gone from a cause and effect association between TMD and orthodontic treatment to the idea that there is no reliable evidence supporting this statement. OBJECTIVE: To assess the beliefs, despite scientific evidence, of Brazilian orthodontists about the relationship between TMD and orthodontic treatment with regards to treatment, prevention and etiology of TMD. METHODS: A survey about the relationship between TMD and orthodontic treatment was prepared and sent to Brazilian orthodontists by e-mail and social networks. Answers were treated by means of descriptive statistics and strong associations between variables were assessed by qui-square test. RESULTS: The majority of orthodontists believe that orthodontic treatment not only is not the best treatment option for TMD, but also is not able to prevent TMD. Nevertheless, the majority of orthodontists believe that orthodontic treatment can cause TMD symptoms. CONCLUSION: This study suggests that orthodontists' beliefs about the relationship between orthodontic treatment and TMD are in accordance with scientific evidence only when referring to treatment and prevention of TMD. The majority of orthodontists believe that, despite scientific evidence, orthodontic treatment can cause TMD.

Compensatory orthodontic treatment for maxillary deficiency: a 4-year follow-up.

In this article, we report the orthodontic treatment of a boy (age 12 years 9 months) who had a midface deficiency, a concave facial profile with maxillary retrusion, a complete crossbite (anterior and posterior), and the maxillary right canine retained in the alveolus. Rapid maxillary expansion was performed followed by complete orthodontic treatment with fixed appliances combined with Class III elastics and anterior vertical elastics. Time was allowed to elapse until growth was virtually over before removing the fixed appliances (at age 18 years 4 months), and no retainer of any type was used. As a result of treatment, significant improvement was noted in his facial appearance, with a proper maxillomandibular relationship, total correction of the maxillary atresia, and satisfactory overjet and overbite. The results remained stable at the 4-year follow-up. Therefore, it can be argued that the use of Class III elastics combined with rapid maxillary expansion has a beneficial effect in the treatment of transverse and sagittal maxillary deficiency in growing patients. Excellence in how the treatment was finished and discontinuation of treatment and control in the final stages of growth contributed to the stability of the final results.

Reabsorções condilares em pacientes cirúrgicos: alternativas terapêuticas conservadoras e minimamente invasivas / Condylar reabsortion in surgical patients: conservative and minimally invasive therapeutic alternatives

Resumo / O processo degenerativo articular é caracterizado pela presença de crepitação, que pode estar acompanhada ou não de artralgia, com dor espontânea ou provocada pela palpação e/ou função. Esse diagnóstico é confirmado por meio de imagens tomográficas. A prevalência de lesões degenerativas da ATM é extremamente alta em pacientes candidatos a procedimentos de Cirurgia Ortognática, e esse pode aumentar o risco de agravamento dos quadros preexistentes, inclusive com a possibilidade de grandes recidivas pós-cirúrgicas da deformidade dentofacial. Estratégias terapêuticas envolvem protocolos capazes de produzir efeitos sobre a dor e a incapacidade funcional, mas também na interrupção da progressão e no reparo dos defeitos da cartilagem articular. A abordagem terapêutica inicial utiliza de terapias não cirúrgicas ou minimamente invasivas, baseadas na supressão da carga articular parafuncional por meio da utilização de placas estabilizadoras e na administração de suplementos ou infiltração de materiais biológicos, como as glicosaminas e ácido hialurônico. Procedimentos cirúrgicos mais invasivos, como as cirurgias abertas da ATM, são reservados para casos isolados refratários à terapia conservadora. Entre os procedimentos da medicina regenerativa, o transplante autólogo de condrócitos parece ser o mais promissor como alternativa terapêutica eficaz e segura para casos de reabsorções condilares.

Efeito imediato da manipulação thrust aplicada na coluna cervical alta sobre a abertura ativa da boca: ensaio clínico randomizado / Immediate effects of upper cervical thrust manipulation on active mouth opening: randomized clinical trial

Objetivo - Determinar a influência imediata da técnica de alta velocidade e baixa amplitude (HVLA) aplicada na coluna cervical alta na abertura ativa da boca. As desordens temporomandibulares são afecções da articulação temporomandibular e suas estruturas periarticulares, sendo um dos sinais característicos a redução na amplitude de depressão da mandíbula. Métodos - Participaram do estudo 83 voluntários com idade entre 18 e 33 anos e dor na coluna cervical, distribuídos aleatoriamente em dois grupos, o experimental, submetidos a técnica HVLA (n= 41) e o grupo placebo (n=42). Cada sujeito teve a abertura da boca mensurada três vezes antes e após o tratamento por um avaliador cego. Resultados - O grupo em que a técnica HVLA foi aplicada na coluna cervical alta promoveu aumento imediato na abertura da boca, visto que a ADM de depressão da mandíbula no momento após intervenção, como a diferença pré e pós-intervenção foram maiores no grupo experimental comparado ao grupo placebo. Conclusão - A aplicação da HVLA sobre os músculos suboccipitais pode promover aumento na abertura da boca em sujeitos sintomáticos na região da coluna cervical imediatamente após a intervenção.

Objective - To determine the immediate influence of high velocity and low aplitude (HVLA) technique applied to upper cervical spine in active mouth opening. Temporomandibular disorders are affections of the temporomandibular joint and periarticular structures, which one of signs is a depression ampleness reduction of the jaw. Methods - The study included 83 volunteers aged between 18 and 33 years and pain inthe cervical spine, divided in two groups, the experimental subject to HVLA (n = 41) and placebo (n = 42 ). Each subject had the opening of the mouth measured three times before and after treatment by a blinded evaluator. Results - The group which HVLA was applied to the upper cervical spine promoted and immediate increase in mouth opening, since the ADM of depression at the time of the jaw after the intervention, as the difference before and after intervention, were higher in the experimental group compared to placebo group. Conclusion - The application of the HVLA on the upper cervical spine may promote an increase in mouth opening in subjects with symptomatic cervical spine region immediately after the intervention.

Improvement of mouth opening for a patient with fibrodysplasia ossificans progressiva: a case report.

The aim of this article is to describe the care of a patient with fibrodysplasia ossificans progressiva (FOP) and to provide dentists with a guide for how to safely care for patients with FOP. Treatment improved the patient's limited mouth opening. FOP is a rare autosomal dominant disorder characterized by congenital malformation of the fingers and toes by heterotopic ossification progressiva of the connective tissue. This ossification causes a limitation in osteoradicular mobility, mainly affecting the spine, shoulders, hips, and peripheral joints. The disease can manifest from pregnancy until adulthood, with no greater prevalence associated with race or gender. Although rare, the disease can be easily identified by its clinical features, and diagnosis can be confirmed by a radiographic examination. There is no known effective treatment for this disease. All therapeutic treatment must be conservative to avoid any condition that may cause heterotopic ossification. Guidelines to prevent new ossifications are important for patients with FOP. Dental professionals should be cautious in planning treatment, avoiding anesthesia, especially in the mandible, to prevent ankylosis of the temporo-mandibular joints. The prevention of dental caries is essential to avoid the need for more invasive treatment.

Avoiding condylar displacement after intraoral vertical ramus osteotomy.

The intraoral vertical osteotomy is a versatile and simple technique usually applied to correct mandibular prognathism. Its greatest advantages include ease of performance and minimum neurosensory disturbances, whereas maxillomandibular fixation is pointed as its major disadvantage. Another important concern about this technique is condylar displacement, which may lead to temporomandibular dysfunction. Technical notes to avoid condylar luxation are discussed after 15 years of experience using this osteotomy as the technique of choice to correct mandibular prognathism. Three similar cases are presented, where 1 condyle was displaced from the glenoid fossa, resulting in mandibular deviation during function in patients requiring small mandibular setback.

Interferencias oclusales y su relación con las maloclusiones funcionales en niños con dentición mixta / Occlusal interferences and its relation with functional malocclusions in children with mixed dentition

Las interferencias oclusales son un problema frecuente en la dentición temporal y mixta, están asociadas a maloclusiones funcionales como mordidas cruzadas anteriores, mordidas cruzadas posteriores, así como anomalías faciales y afectaciones de la articulación temporomandibular. Se realizó un estudio observacional descriptivo de corte transversal, donde fueron examinados 820 niños pertenecientes a escuelas primarias, área de salud Contreras, del municipio de Matanzas, con la finalidad de identificar las interferencias oclusales que se relacionaron con la presencia de mordida cruzada anterior funcional, mordida cruzada posterior unilateral funcional. Del total de niños examinados, 138 presentaron interferencias oclusales, de ellos el 36,9 por ciento presentó mordida cruzada anterior, y un 63,0 por ciento mordida cruzada posterior. La detección precoz de las interferencias oclusales nos dará la posibilidad de la intercepción de maloclusiones dentarias, así como en la prevención de anomalías dentomaxilofaciales y alteraciones de la articulación tempomandibular...(AU)

The occlusal interferences are a frequent problem in temporal and mixed dentition. They are associated to functional malocclusions with anterior crossed biting, posterior crossed biting, and also to facial anomalies and affections of the temporomandibular articulation. We carried out a descriptive, observational, transversal study, where we examined 820 primary school children of the Contreras health area, municipality of Matanzas, to identify the occlusal interferences related to the presence of functional anterior crossed biting, functional unilateral posterior crossed biting. 138 of the examined children presented occlusal interferences; 36,9 percent of them presented anterior crossed biting, and 63,0 percent posterior crossed biting. The precocious detection of occlusal interferences will give us the possibility of intercepting dental malocclusions and also of preventing dentomaxillofacial anomalies and alterations of the temporomandibular articulation...(AU)

Interferencias oclusales y su relación con las maloclusiones funcionales en niños con dentición mixta / Occlusal interferences and its relation with functional malocclusions in children with mixed dentition

Las interferencias oclusales son un problema frecuente en la dentición temporal y mixta, están asociadas a maloclusiones funcionales como mordidas cruzadas anteriores, mordidas cruzadas posteriores, así como anomalías faciales y afectaciones de la articulación temporomandibular. Se realizó un estudio observacional descriptivo de corte transversal, donde fueron examinados 820 niños pertenecientes a escuelas primarias, área de salud Contreras, del municipio de Matanzas, con la finalidad de identificar las interferencias oclusales que se relacionaron con la presencia de mordida cruzada anterior funcional, mordida cruzada posterior unilateral funcional. Del total de niños examinados, 138 presentaron interferencias oclusales, de ellos el 36,9 por ciento presentó mordida cruzada anterior, y un 63,0 por ciento mordida cruzada posterior. La detección precoz de las interferencias oclusales nos dará la posibilidad de la intercepción de maloclusiones dentarias, así como en la prevención de anomalías dentomaxilofaciales y alteraciones de la articulación tempomandibular.

The occlusal interferences are a frequent problem in temporal and mixed dentition. They are associated to functional malocclusions with anterior crossed biting, posterior crossed biting, and also to facial anomalies and affections of the temporomandibular articulation. We carried out a descriptive, observational, transversal study, where we examined 820 primary school children of the Contreras health area, municipality of Matanzas, to identify the occlusal interferences related to the presence of functional anterior crossed biting, functional unilateral posterior crossed biting. 138 of the examined children presented occlusal interferences; 36,9 percent of them presented anterior crossed biting, and 63,0 percent posterior crossed biting. The precocious detection of occlusal interferences will give us the possibility of intercepting dental malocclusions and also of preventing dentomaxillofacial anomalies and alterations of the temporomandibular articulation.

Efectividad del tratamiento con férulas oclusales duras versus eminectomía en disfunción temporomandibular, Hospital Roberto Calderón Gutiérrez / Effects of treatment with occlusal splints hard versus eminectomía temporomandibular dysfunction, Roberto Calderon Hospital Gutierrez

El presente estudio se evaluó la eficacia clínica de férulas oclusales duras (tratamiento conservador) versus eminectomía(tratamiento quirúrgico) en sujetos con disfunción temporomandibuylar. Es un ensayo clínico exsperimental con un universo de 250 sujetos, el tamaño de la muestra fue de 120 sujetos. Los sujetos fueron valorados en etapas pre tratamiento y pos tratamiento a los 10 días, 45 días y 6 meses a través de Escala Analoga del dolor. palpación y auscultación para constatar la presencia de ruidos articulares, la maniobra de Kroug- Paulsen para valorar los movimientos anormales mandibulares en apertura y cierre. Resultados: ambas técnicas fueron efectivas para desaperecer los ruidos articulares, los movimientos anormales en las excursiones máxima apertura bucal y excursón laterotrusiva, el dolor dismnuyó en un 55 por ciento con tratamiento quirúrgico y un 70 por ciento con tratamiento conservador a los 6 meses: mandibular, con el tratamiento quirúrgico se obtuvo en deflexión un 90 por ciento y en excursión protusiva un 97 por ciento...

Tratamiento interceptivo de interferencias oclusales en niños con maloclusiones funcionales en dentición temporal / Interceptive treatment of occlusal interferences in children with functional malocclusions in temporal teething

Un problema frecuente en la dentición infantil son las interferencias oclusales, capaces de provocar maloclusiones funcionales como mordidas cruzadas anteriores, mordidas cruzadas posteriores, así como anomalías faciales y afectaciones de la articulación temporomandibular. Por estas razones se decidió realizar una investigación para identificar las interferencias oclusales relacionadas con mordida cruzada anterior y posterior funcionales, y evaluar el comportamiento de la oclusión al ser aplicado el método de desgaste selectivo de P. Planas en edades tempranas. Se efectuó un estudio descriptivo en niños pertenecientes a círculos infantiles del Área de Salud “Milanés” del municipio de Matanzas, en el período comprendido desde enero hasta septiembre de 2005. Se obtuvo que de 144 niños examinados 39 presentaron interferencias oclusales; de ellos el 41.03 por ciento presentó mordida cruzada anterior y un 66.67 por ciento mordida cruzada posterior. Después de aplicado el método de Desgastes Selectivos de Planas P., solamente un 12.50 por ciento no descruzó la mordida anterior y un 11.54 por ciento la mordida posterior, quedando demostrado que la aplicación temprana de este método es una medida eficaz a tomar en cuenta para la intercepción de maloclusiones dentarias, así como en la prevención de anomalías dentomaxilofaciales y alteraciones de la Articulación Tempomandibular...(AU)