Control vertical mediante bite block en relación céntrica / Vertical control through bite block in centric relation

Paciente femenina de ocho años y cuatro meses, con patrón esquelético de clase II severa y overjet de 10 mm, fue tratada con Bite-Block Céntrico como método de control vertical. Después de cinco meses de terapia con aparatología fija de primera fase se logró control vertical y reducción de las desviaciones de la clase esquelética. Posteriormente se continuó con tratamiento activo durante 18 meses, se dio de alta de la primera fase cuando los objetivos del tratamiento como alineación, nivelación, overbite y overjet fueron adecuados. Los registros postratamiento demostraron una buena estabilidad articular, oclusión funcional y una mejora en la estética facial. El montaje en céntrica postratamiento demuestra estabilidad condilar con el uso de Bite-Block Céntrico como método de control vertical (AU)

Female patient of eight years and four months, with skeletal pattern of severe class II and 10 mm overjet, was treated with Bite-Block Centric as a vertical control method. After five months of therapy with fixed appliances of the first phase, vertical control and reduction of the deviations of the skeletal class were achieved. Subsequently continued with active treatment for 18 months, was discharged from the first phase when the treatment objectives such as alignment, leveling, overbite and overjet appropriate. Post-treatment records showed good joint stability, functional occlusion and an improvement in facial aesthetics. The posttreatment centric assembly demonstrates condylar stability with the use of Centric Bite-Block as a vertical control method (AU)

Evaluation of the effect of a new fixation tape for tracheal catheter in intensive care patients / 中华危重病急救医学

Objective To evaluate the effect of a new type of fixation tape for tracheal catheter in intensive care patients.Methods A purposive sampling study was conducted. Ninety patients experienced oral tracheal intubation for mechanical ventilation, and admitted to respiratory intensive care unit (ICU) of the Second Affiliated Hospital of Nantong University from November 2015 to February 2017 were enrolled. All the patients were randomly (random number) divided into the control group and the observation group with 45 patients in each group. The patients in control group was treated with the traditional medical adhesive tape and fixation belt to fix endotracheal tube, while the patients in observation group was treated with a new type of tracheal catheter fixation tape. The fixation effect, skin complication rate, patient's comfort level, nursing workload and satisfaction were evaluated in both groups.Results There were 6 patients with mild displacement, 2 patients with moderate displacement and 1 patient with severe displacement in the control group, while there was no catheter displacement or detachment occurred in the observation group, and the difference between the two groups was statistically significant (χ2 = 2.944,P = 0.003). In the control group, there were 39 patients with facial skin redness,6 patients with facial skin damage, 36 patients with neck skin redness, and 2 patients with neck skin damage. In the observation group, there were no facial skin complications and only 2 patients with neck skin redness, and the skin complication rate was significantly higher than that of the control group (facial skin:Z = 9.173,P = 0.000; neck skin:Z = 7.549,P = 0.000). Compared with the control group, the patients' comfort levels were significantly elevated in the observation group (the intolerance patients: 9 vs. 24, the extreme discomfort patients: 4 vs. 8,Z = 3.695,P = 0.000). The total changing times of the fixation belt and operating time for each change in the observation group were significantly decreased as compared with those of control group [changing times of the fixation belt (times): 1.89±0.77 vs. 3.86±1.18, operating time for each change (minutes): 10.31±1.47 vs. 15.78±1.89, bothP < 0.01]. Nursing satisfaction in the observation group was significantly higher than that of the control group (100% vs. 33.3%,P < 0.01).Conclusions The new fixation tape for tracheal catheter could significantly reduce the catheter displacement and detachment rate, and decreasethe incidence of facial skin injury. It is easy to learn and worth to generalize clinically.

A new bite block for panoramic radiographs of anterior edentulous patients: A technical report

PURPOSE: Panoramic radiographs taken using conventional chin-support devices have often presented problems with positioning accuracy and reproducibility. The aim of this report was to propose a new bite block for panoramic radiographs of anterior edentulous patients that better addresses these two issues. MATERIALS AND METHODS: A new panoramic radiography bite block similar to the bite block for dentulous patients was developed to enable proper positioning stability for edentulous patients. The new bite block was designed and implemented in light of previous studies. The height of the new bite block was 18 mm and to compensate for the horizontal edentulous space, its horizontal width was 7 mm. The panoramic radiographs using the new bite block were compared with those using the conventional chin-support device. RESULTS: Panoramic radiographs taken with the new bite block showed better stability and bilateral symmetry than those taken with the conventional chin-support device. Patients also showed less movement and more stable positioning during panoramic radiography with the new bite block. CONCLUSION: Conventional errors in panoramic radiographs of edentulous patients could be caused by unreliability of the chin-support device. The newly proposed bite block for panoramic radiographs of edentulous patients showed better reliability. Further study is required to evaluate the image quality and reproducibility of images with the new bite block.

Bite-block posterior: uma opção para o controle vertical / Posterior bite-block: an option for vertical control

O presente artigo apresenta considerações gerais sobre a mordia aberta anterior e aspectos relacionados ao Bite-Block posterior. A literatura mostra que o controle do componente vertical é muito difícil de ser realizado e os resultados finais mostraram-se pouco estáveis. Do ponto de vista teórico, o Bite-Block possibilita o controle do deslocamento vertical da maxila e mandíbula, podendo ser indicado para pacientes com mordida aberta anterior associada à altura facial ântero-inferior aumentada e ângulo do plano mandibular aberto. O artigo é ilustrado com a apresentação do caso clínico de uma paciente em fase de crescimento, que apresentava mordida aberta esquelética associada a mordida cruzada posterior e que foi tratada com o Bite-Block posterior associado ao uso do aparelho fixo e que, aos 2 anos pós-tratamento, mantém uma boa estabilidade.

Non-surgical treatment and retention of open bite in adult patients with orthodontic mini-implants / 대한치과교정학회지

Successful treatment of the non-growing patient with an open bite of either dental skeletal pattern often presents a difficult challenge. The morphologic pattern in anterior open bite is characterized by longer vertical dimensions, an increase in development of the maxillary posterior dento-alveolar structure and a steep mandibular plane. In such cases, molar intrusion would be a good remedy for treatment. This article reports the successful treatment and retention of two anterior open-bite cases. We used orthodontic mini-implants for treatment and a circumferential retainer with posterior bite block or skeletal fixed retainer for retention. The diagnostic criteria and mechanics for appropriate treatment are discussed. Our results suggest that open bite can be reduced successfully with intrusion of molars using orthodontic mini-implants (OMI) without orthognathic surgery, and that circumferential retainer with posterior bite block and skeletal fixed retainer are effective for retention.