Root-supported overdenture in a patient with a cleft palate and extensive bone loss after traumatic injury.

Maxillofacial trauma caused by automobile accidents can result in extensive loss of alveolar bone, teeth, and gingival tissues as well as a cleft palate. Patients who have undergone such trauma may experience a loss of vertical dimension of occlusion, esthetic deformity, and difficulties in speaking, chewing, and swallowing. Both prosthodontic and surgical treatment are required in these cases. This case report describes the use of palatoplasty and maxillary and mandibular complete overdentures with a ball attachment system supported by natural roots as rehabilitative treatment for a 65-year-old man who had been injured in an automobile accident 24 years previously. Palatoplasty was performed to close the cleft palate that resulted from the trauma. Other procedures, including tooth extractions, endodontic treatment, cementation of ball attachments, and fabrication of temporary removable partial dentures to reestablish the vertical dimension of occlusion, were performed before the overdentures were placed. This treatment reestablished the patient's chewing, phonetic, and esthetic functions at a lower cost than other treatment options. At the 1-year follow-up evaluation, the patient's oral health was satisfactory, with no loss of abutment teeth, and the prostheses were functioning correctly.

Comparison of 3- and 90-day bond strengths of 3 types of cement to nickel-chromium alloy.

The purpose of this in vitro study was to compare the 3- and 90-day bond strengths of 3 cements used for luting metal-ceramic crowns. Zinc phosphate cement (ZPC; SS White), resin-modified glass ionomer cement (RMGIC; Fuji Plus), and self-adhesive resin cement (SARC; RelyX U200) were assessed in 2 different treatment conditions (with and without microsandblasting of the alloy) and at 2 experimental times (3 days [E1] and 90 days [E2] after cementation). The buccal surfaces of 84 bovine teeth were ground until the dentin was exposed, and 84 nickel-chromium alloy plates cast from a resin model were cemented to the dentin surfaces with 1 of the 3 cements (n = 28). In half of the specimens of each group (n = 14), the bonding surfaces of the nickel-chromium plates received 6 seconds of microsandblasting with 45-µm aluminum oxide particles prior to cementation. The compressive shear bond strengths of the specimens were evaluated in a universal testing machine at E1 and E2 (n = 7). The SARC group showed the greatest bond strength, followed by the RMGIC group, while the bond strength of the ZPC group was significantly lower (P < 0.01). For the RMGIC specimens subjected to microsandblasting, there was a statistically significant difference between the mean bond strengths at E1 and E2 (P = 0.040). All of the other cement and treatment groups showed statistically similar adhesion results at E1 and E2 (P > 0.05). The complementary test by Sidák revealed that the cements Fuji Plus and RelyX U200 showed higher values at E2 and were statistically similar to each other (P > 0.05). Although RMGIC specimens showed a lower initial bond strength than SARC specimens, the fact that the microsandblasted RMGIC subgroup was the only one that demonstrated a significant increase in bond strength with aging suggests that RMGIC can be a material of first choice because it also costs less than SARC.

Acupuncture in the treatment of temporomandibular muscle dysfunction / Acupuntura no tratamento da disfunção temporomandibular muscular

ABSTRACT BACKGROUND AND OBJECTIVES: Temporomandibular dysfunction consists of frequent non-dental pain in the orofacial region of multifactorial origin and interdisciplinary treatment, among them, acupuncture. The treatment of temporomandibular dysfunction acts both in muscle relaxation and pain control, trying to achieve the physical, mental, and emotional balance of the patient, thus reducing anxiety and improving the quality of life. The objective of this study was to evaluate acupuncture as a treatment for temporomandibular dysfunction. METHODS: A total of 34 volunteers screened and selected at the Federal University of Mato Grosso do Sul, diagnosed with muscle dysfunction according to the Research Diagnostic Criteria. They were randomly divided into two equal groups: group 1 treated with occlusal plaque, massage, thermotherapy and self-care guidelines; and group 2 treated with six acupuncture sessions lasting 30 minutes each. The pain was evaluated by the visual analog scale, and an algometer to assess the muscular tension of the temporal and masseter muscles. The limitation of mouth opening was measured with the use of calipers. The Mann-Whitney test was used for the non-normal distribution (visual analog scale and tension threshold) between the two groups (G1 and G2), and the Friedman test to compare the assessment periods (beginning of the treatment, after six weeks and four months) with a significance level of 5%. RESULTS: There was no difference in mouth opening, visual analog scale scores, or muscle tension threshold in relation to the type of treatment used. Both groups improved after six weeks of treatment. There was no statistical difference in the values obtained after six weeks and after four months. CONCLUSION: The statistical results showed that acupuncture increased the muscle tension threshold, improved the mouth opening and reduced pain, being as effective as the most commonly used conventional therapies.

RESUMO JUSTIFICATIVA E OBJETIVOS: A disfunção temporomandibular consiste em dores não dentárias frequentes na região orofacial, de origem multifatorial e de tratamento interdisciplinar. Entre esses tratamentos está a acupuntura. O tratamento da disfunção temporomandibular atua tanto no relaxamento muscular quanto no controle da dor, sistemicamente buscando o equilíbrio físico, mental e emocional do paciente, diminuindo a ansiedade e melhorando a qualidade de vida. Este trabalho teve como objetivo avaliar a acupuntura como tratamento da disfunção temporomandibular. MÉTODOS: Participaram do estudo 34 voluntários triados e selecionados na universidade de Mato Grosso do Sul, diagnosticados com disfunção muscular pelo Research Diagnostic Criteria, e foram divididos aleatoriamente em dois grupos iguais. O grupo 1 foi tratado com placa oclusal, massagem, termoterapia e orientações de autocuidado. O grupo 2 foi tratado com 6 sessões de acupuntura com duração de 30 minutos cada. A dor foi avaliada pela escala analógica visual e com auxílio de um algômetro para avaliar a tensão muscular dos músculos temporal e masseter. A limitação de abertura bucal foi medida com o uso do paquímetro. Para a distribuição não normal (escala analógica visual e limiar de tensão), entre os dois grupos (G1 e G2), foi utilizado o teste Mann-Whitney, e para a comparação entre os períodos de avaliação (início do tratamento, após seis semanas e 4 meses), foi utilizado o teste de Friedman, ao nível de significância de 5%. RESULTADOS: Não houve diferença das medidas de abertura de boca, dos escores de escala analógica visual e de limiar de tensão muscular segundo o tipo de tratamento utilizado. No entanto, em ambos os grupos houve melhora nos parâmetros avaliados após seis semanas de tratamento. Não houve diferença estatística dos valores obtidos após seis semanas e ao final do tratamento, após quatro meses. CONCLUSÃO: Os resultados estatísticos mostraram que a acupuntura aumentou o limiar de tensão muscular, melhorou a abertura de boca e diminuiu a dor. Concluiu-se que a acupuntura foi tão eficiente quanto as terapias convencionais mais utilizadas.

Controle da DTM no planejamento de reabilitação bucal: relato de caso / TMD control in the oral rehabilitation: case report

A disfunção temporomandibular (DTM) é definida como uma disfunção de origem multifatorial que acomete os músculos mastigatórios, ATM e as estruturas associadas. Casos de reabilitação oral em pacientes com disfunção são cada vez mais frequentes nas clínicas odontológicas, exigindo assim, meios criteriosos de diagnostico, planejamento e tratamento. Entretanto, a maioria dos casos requer tratamentos complexos que demandam uma condição fisiológica adequada e um custo relativamente alto para a realidade desses pacientes. Este trabalho se propõe através de um caso clinico apresentar e discutir as etapas clinicas de diagnostico, planejamento e execução de reabilitação protética em participante com DTM e alteração da dimensão vertical de oclusão. Foi proposto um tratamento visando melhorar a qualidade de vida da paciente com a devolução da função mastigatória, estética, fonética e harmonia facial através de um método conservador, reversível e de baixo custo. Após o controle da DTM, optou-se pela instalação de uma prótese parcial removível não convencional retidas com attachment Ball e suportadas por remanescentes dentários que receberam copings curtos. Anteriormente à instalação da prótese definitiva, adotamos o uso de PPRs provisórias para que se verificasse a adaptação da DVO previamente à reabilitação permanente. Ao final do tratamento a paciente demonstrou-se satisfeita com os resultados que devolveu a condição de normalidade ao sistema estomatognático. Em decorrência disso, percebemos que o uso de PPR provisória é uma ótima opção nos casos em que há alteração da DVO e que o uso de PPR overlay dentosuportada atende as necessidades do usuário mostrando ser viável e efetiva(AU)

The temporomandibular disorder (TMD) is defined as a disorder with multifactorial origin which affect masticatory muscles, the TMJ and other related structures. Oral rehabilitation cases in patients with the disorder are increasingly more frequent in the dental office, requiring careful diagnosis, planning and treatment. However, most cases require complex treatments that demand a proper physiological condition and a relatively high cost for these patient's reality. This paper proposes, through a clinical case, to present and discuss the clinical stages of diagnosis, planning and execution of a prosthetic rehabilitation in participants with severe parafunction and loss of vertical dimension of occlusion. A treatment was proposed aiming an improvement in the quality of life of the patient and the reestablishment of the masticatory, aesthetic, phonetic and facial harmony function through a conservative, reversible and low cost method. Therefore, it was decided the placement of an unconventional removable partial denture retained with an attachment ball and supported by dental remnants that receive short copings. Prior to the definitive denture installation, it was adopted the use of temporaryRPDsin order to reestablish the VDOpreviously to thepermanent rehabilitation. At the end of the treatment, the patient was satisfied with the results that returned the normality condition to the stomatognatic system. As a result, it was observed that the use of the temporary RPDis a great option in cases where there is an alteration of the VDO and that the use of tooth-supported overlay RPD attends the user's needs by being feasible and effective(AU)

Estudo clínico da posição da cabeça e mandíbula em pacientes com disfunção temporomandibular muscular / Clinical study on head and jaw position of patients with muscle temporomandibular disorder

RESUMO JUSTIFICATIVA E OBJETIVOS: A disfunção temporomandibular é um termo coletivo que abrange um largo espectro de problemas clínicos da articulação e dos músculos na área orofacial. O sistema estomatognático integra o sistema postural, assim sendo, alterações que ocorrem em um sistema podem interferir no funcionamento do outro. O objetivo deste estudo foi verificar se há alteração da posição da mandíbula e da cabeça antes e após o tratamento da disfunção temporomandibular. MÉTODOS: Foram selecionados 16 voluntários, com idade acima de 18 anos, de ambos os gêneros, que buscaram tratamento na clínica do curso de odontologia de Instituição Pública de Ensino Superior, com diagnóstico de disfunção temporomandibular de acordo com os Critérios de Diagnóstico para Pesquisa das Desordens Temporomandibulares. Realizaram-se tomadas radiográficas (telerradiografia com análise de pontos cefalométricos); a avaliação postural, em relação cêntrica fisiológica, foi verificada por meio da fotogrametria computadorizada e a intensidade da dor foi avaliada pela escala analógica visual com pontuação de zero a 10. Os pacientes foram avaliados antes e após 8 semanas de tratamento. RESULTADOS: A percepção à dor diminuiu de 6,43±2,84 para 2,17±2,39, antes e após tratamento, respectivamente (p<0,05). O alinhamento vertical da cabeça, no ângulo inicial, mudou de 21,84º±17,49º para 11,38º±14,61º (p<0,05). A posição da mandíbula mudou de A-NB (ângulo que indica a relação maxila-mandíbula no sentido anteroposterior): 4,95±2,52mm para A-NB: 4,64±2,52 mm (p<0,05). CONCLUSÃO: A disfunção temporomandibular muscular pro-move alteração do alinhamento vertical da cabeça e interfere na posição da mandíbula.

ABSTRACT BACKGROUND AND OBJECTIVES: Temporomandibular disorder is a collective term encompassing a wide range of clinical orofacial joint and muscle problems. The stomatognatic system is part of the postural system, so changes in one system may interfere with the other. This study aimed at observing whether there is change in jaw and head position before and after temporomandibular disorder treatment. METHODS: Participated in the study 16 volunteers, aged above 18 years, of both genders, who looked for assistance in the dentistry course clinic of a Public University, with diagnosis of temporomandibular disorder according to Diagnostic Criteria for Temporomandibular Disorder Research. Volunteers were submitted to X-rays (teleradiography with analysis of cephalometric points); posture in physiologic centric relation was evaluated by computerized photogrammetry and pain intensity was evaluated by the visual analog scale from zero to 10. Patients were evaluated before and after 8 weeks of treatment. RESULTS: Pain has decreased from 6.43±2.84 to 2.17±2.39, before and after treatment, respectively (p<0.05). Vertical head alignment, in initial angle, has changed from 21.84º±17.49º to 11.38º±14.61º (p<0.05). Jaw position has changed from A-NB (angle indicating mandible-jaw relationship in the anterior posterior direction): 4.95±2.52mm to A-NB: 4.64±2.52mm (p<0.05). CONCLUSION: Muscle temporomandibular disorder changes vertical head alignment and interferes with jaw position.

Influência do tratamento das desordens temporomandibulares na dor e na postura global / Influence of temporomandibular disorders management on pain and global posture

JUSTIFICATIVA E OBJETIVOS: A disfunção temporomandibular é uma síndrome clínica que acomete principalmente músculos mastigatórios e articulações temporomandibulares. Como a articulação temporomandibular está diretamente relacionada à região cervical e escapular por meio de cadeias musculares, alterações posturais da coluna podem acarretar distúrbios de articulação temporomandibular, e vice-versa. A relação entre a postura corporal e a disfunção temporomandibular pode estabelecer uma forma de prevenção e reabilitação. Sendo assim o objetivo deste trabalho foi avaliar a influência do tratamento da disfunção temporomandibular muscular na postura global de indivíduos diagnosticados por meio do Research Diagnostic Criteria for Temporomandibular Disorders. MÉTODOS: Trinta pacientes foram classificados em grupo controle (n=12) (sem diagnóstico clínico de disfunção temporomandibular) e tratamento (n=17) (com diagnóstico de disfunção temporomandibular). Esses pacientes passaram por avaliação postural através da fotogrametria e análise pelo Software de Avaliação Postural. O tratamento consistiu em aconselhamento, fisioterapia caseira e uso do dispositivo interoclusal, monitorado por dois meses. Os pacientes do grupo controle apenas utilizaram o dispositivo interoclusal pelo mesmo período. Após o tratamento, uma nova avaliação foi feita pela fisioterapia. RESULTADOS: Nos pacientes do grupo controle, não ocorreram alterações nas medidas correspondentes ao inicio da intervenção comparado ao pós-tratamento. Já no grupo tratamento, apenas o ângulo de alinhamento vertical da cabeça exibiu resultado estatisticamente significativo (p<0,05). Para análise da melhora da dor foi comparado antes e após o tratamento e obtiveram-se resultados positivos para remissão de sintomas dolorosos. CONCLUSÃO: Pode-se concluir que desvios posturais globais causam adaptações e realinhamento corporal que podem interferir na função e organização da articulação temporomandibular. O tratamento foi efetivo para melhora da dor.

BACKGROUND AND OBJECTIVES: Temporomandibular disorder is a clinical syndrome affecting primarily masticatory muscles and temporomandibular joints. Since temporomandibular joint is directly related to cervical and scapular region by means of muscle chains, postural spinal changes may induce temporomandibular joint disorders and vice-versa. The relationship between body posture and temporomandibular disorder may determine prevention and rehabilitation. So, this study aimed at evaluating the influence of temporomandibular joint disorder management on global posture of individuals diagnosed by the Research Diagnostic Criteria for Temporomandibular Disorders. METHODS: Thirty patients were classified in control group (n=12) (without clinical diagnosis of temporomandibular disorder) and treatment group (n=17) (with diagnosis of temporomandibular disorder). These patients went through postural evaluation by photogrammetry and analysis with the Postural Evaluation Software. Treatment consisted of counseling, home physiotherapy and interocclusal device, monitored for 2 months. Control group patients have only used interocclusal device for the same period. After treatment a new evaluation was performed by the physiotherapy department. RESULTS: Control group patients have shown no changes in measurements corresponding to beginning of intervention as compared to after treatment. In the treatment group, only the vertical alignment angle of the head has shown statistically significant results (p<0.05). To analyze pain relieve pre and post treatment data were compared with positive results for painful symptoms remission. CONCLUSION: It is possible to conclude that global postural changes cause body adaptations and realignment, and may interfere with temporomandibular joint function and organization. Treatment was effective to relieve pain.

Joint disorder: nonreducing disc displacement with mouth opening limitation - report of a case.

The internal derangement of the temporomandibular joint (TMJ) represents 8% of all cases of temporomandibular disorders (TMD) posing difficulties to establish an accurate diagnosis and treatment because of its low prevalence. This article presents the case of an 18-year-old Caucasian female patient who came to our Orofacial Pain and TMD Outpatient Service with complaints of intense pain on the right TMJ and limitation of mouth opening (maximum interincisal opening of 29 mm) with deviation to right, which she had been experiencing for the past 3 years. After a detailed clinical interview, a diagnosis hypothesis of nonreducing disc displacement with mouth opening limitation was established. The proposed treatment consisted of intra-joint infiltration with anesthetic in the right TMJ followed by jaw manipulation to recapture the articular disc, which was impeding the complete translation movement of the affected TMJ. After jaw manipulation, a new evaluation was done and showed the re-establishment of jaw dynamics with mouth opening and closing without deviation to the right side, clicking, opening limitation or pain. The patient was followed up at 6 months intervals. Two years after treatment, the patient was reevaluated and her mandibular range of motion without aid increased to 54 mm with no clicking, deviation to right, trismus or pain on the TMJ, indicating success of the treatment approach without recurrence of the pathology.

Joint disorder: nonreducing disc displacement with mouth opening limitation - report of a case

The internal derangement of the temporomandibular joint (TMJ) represents 8 percent of all cases of temporomandibular disorders (TMD) posing difficulties to establish an accurate diagnosis and treatment because of its low prevalence. This article presents the case of an 18-year-old Caucasian female patient who came to our Orofacial Pain and TMD Outpatient Service with complaints of intense pain on the right TMJ and limitation of mouth opening (maximum interincisal opening of 29 mm) with deviation to right, which she had been experiencing for the past 3 years. After a detailed clinical interview, a diagnosis hypothesis of nonreducing disc displacement with mouth opening limitation was established. The proposed treatment consisted of intra-joint infiltration with anesthetic in the right TMJ followed by jaw manipulation to recapture the articular disc, which was impeding the complete translation movement of the affected TMJ. After jaw manipulation, a new evaluation was done and showed the re-establishment of jaw dynamics with mouth opening and closing without deviation to the right side, clicking, opening limitation or pain. The patient was followed up at 6 months intervals. Two years after treatment, the patient was reevaluated and her mandibular range of motion without aid increased to 54 mm with no clicking, deviation to right, trismus or pain on the TMJ, indicating success of the treatment approach without recurrence of the pathology.