Use Of Temporary Prosthesis Research Articles

A scoping review of postoperative early rehabilitation programs after dysvascular-related amputations.

After amputation, people face challenges including wound healing and decreased functional mobility. Early mobilization in acute hospital care has proved safe, improved function, and sped discharge. Still, loss of a leg complicates standing and early mobilization after amputation. Approaches to early mobilization and rehabilitation after amputation surgery have not been widely studied. To map the evidence regarding early postoperative mobilization after dysvascular amputation. Specific aims included identifying research designs and populations, describing rehabilitation approaches, and identifying gaps within the literature. Scoping review following PRISMA-Sc guidelines. The a priori scoping review methodology conducted in June 2022 with English language and 20-year limits used the OVID Medline, OVID Allied and Complementary Medicine Database, Cumulative Index to Nursing and Allied Health Literature, Cochrane databases, and Journal of Prosthetics and Orthotics archive. Reviewer pairs used Covidence software to screen for inclusion (subjects with major lower limb dysvascular amputations, seen immediately postoperatively for hospital-based rehabilitation) with decisions by concurrence. Data for best practice scoping reviews were synthesized for analysis. Two hundred ninety-six citations were screened, 13 full texts reviewed, and 8 articles included: 2 cohort studies, 3 case-control studies, 2 single-group interventional studies, and 1 case study. There were no randomized control trials or prospective comparison group trials. Few studies were identified regarding acute rehabilitation after major lower extremity amputation. The limited evidence in this review suggested that early mobilization in the days after amputation was safe with or without use of temporary prostheses, although further research is certainly warranted.

ЭКСПЕРИМЕНТАЛЬНО-МАТЕМАТИЧЕСКОЕ ОБОСНОВАНИЕ ПРИМЕНЕНИЯ ЦИФРОВЫХ ТЕХНОЛОГИЙ ДЛЯ РЕГИСТРАЦИИ ПОЛОЖЕНИЯ НИЖНЕЙ ЧЕЛЮСТИ ПРИ ТОТАЛЬНОМ ПРОТЕЗИРОВАНИИ С ИСПОЛЬЗОВАНИЕМ ДЕНТАЛЬНЫХ ИМПЛАНТАТОВ

Subject. When prosthetics of toothless jaws are performed, the physiological position of the lower jaw must be determined before the final structures are made. In some cases, the use of temporary prostheses for several weeks may be useful to check for a new occlusion in a centric relationship. When the correct ratio is achieved, it is difficult to transfer them from the preliminary prostheses to the final ones. This article presents a case and a technique used to communicate information about the position of the lower jaw using a digital workflow.
 To determine the optimal position of the lower jaw, a computer tomogram of the temporomandibular joint was used to mathematically measure the correct position of the head of the lower jaw.
 Purpose. To describe a technique designed to transfer the inter-occlusal relations of the upper and lower jaws, using digital technologies in the prosthetics of full adentia using dental implants.
 Methodology. On the example of a clinical case of rehabilitation of a patient, total removal of failed teeth was performed, followed by prosthetics of complete adentia with the installation of six implants on the upper and lower jaws. After the completion of the integration period, a cone-beam computed tomography was performed with the capture of the temporomandibular joint, and a scan of plaster models with installed gum shapers was performed. The obtained data were compared in a specialized program for mathematical calculation of the optimal position of the lower jaw. This information was used to produce registration templates for the manufacture of fixed structures supported by implants in the resulting central jaw ratio.
 Results. A digital protocol for determining the central ratio of the jaws allowed us to transfer the information obtained in a virtual model of the temporomandibular joint to a permanent restoration based on implants.
 Conclusion. The approach described in this article predictably conveys information about the optimal position of the lower jaw during prosthetics and allows you to perform the final restoration on implants with optimal occlusal ratios, based on a mathematical calculation performed in specialized programs.

Desenvolvimento biomecânico e avaliação de uma nova estrutura para reabilitação all-on-four.

Introdução: Para a reabilitação completa de mandíbulas totalmente edêntulas, a opção de carga imediata determina o uso de próteses provisórias que imobilizam os implantes instalados. Embora as próteses provisórias com reforço proporcionem reabilitações com benefícios biomecânicos, a não adoção desta recomendação coexiste em diferentes estudos sobre restaurações imediatas.
 Objetivo: Este estudo avalia um tipo de prótese para restaurar mandíbulas pelo conceito all-on-four.
 Material e método: O comportamento mecânico das próteses com a estrutura modificada foi avaliado in vitro , sob um ensaio de flexão mecânica unilateral em cantilever. Dois grupos representativos foram incluídos no conceito all-on-four, com um grupo teste G1 (n = 10) contendo estruturas modificadas e um grupo controle G2 (n = 10) que incluiu próteses acrílicas completas. As amostras foram submetidas à termociclagem com 500 ciclos (5 ° ± 2 ° C por 30 se 55 ° ± 2 ° por 30 s) e ao ensaio de flexão mecânica no cantilever.
 Resultado: O teste de Mann-Whitney revelou diferença significativa entre G1 e G2 (p <0,001). Na avaliação descritiva, o G1 apresentou média de 830,50 N até a fratura inicial da resina, enquanto o grupo controle apresentou média de 403,58N. A resistência máxima até a fratura completa foi registrada no G1, com média de 903,03N, enquanto no G2, foi registrada uma média de 435,20N. O componente linear vertical da flexão foi de 0,68 mm e 0,39 mm até a fratura inicial da barra, respectivamente para G1 e G2.
 Conclusão: A estrutura modificada para o protocolo all-on-four determinou melhor desempenho mecânico quando comparado ao mesmo modelo de prótese acrílica completa.

Definitive Obturator for Class IV Maxillary Defect with Cast Retainers -A Case Report

Retention, stability & support are three important factors which determine the basic objectives, success and comfort of any removable prosthesis.In acquired surgical maxillary defects; the degree of impairment, size and location of the defect influences the outcome of the overall prosthetic overhaul.Prosthetic therapy with obturator closes the defect by re-establishing the oro-nasal separation, thereby, improving deglutition, speech and hypernasality. After maxillectomy, 3-6 months after surgery,patients with class 4 maxillary defects complains of frequent loosening of temporary prosthesis due to more amount of tissue changes, dimensional stabilization of surgical site, more loss of mucogingival support and rapid healing changes. As a result, there is an every chance of endangerment with the use of temporary prosthesis and allow the patients in seeking the definitive prosthesis over interim prosthesis. In this regard, designing of cast partial metal frame work with linear configuration for class 4 maxillary defects enhances the quality and comfort of the definitive prosthesis over conventional acrylic prosthesis. This article mainly describes the fundamental designing technique in improving the retention, stability and support of the definitive prosthesis with cast retainers.

Biomechanical development and evaluation of a new framework for all-on-four rehabilitation

Abstract Introduction For complete rehabilitation of fully edentulous mandibles, the option for immediate loading determines the use of temporary prostheses that splint the installed implants. Although temporary prostheses with reinforcement provide rehabilitations with biomechanical benefits, the non-adoption of this recommendation coexists in different studies on immediate restorations. Objective This study evaluates a type of prosthesis to restore jaws by the all-on-four concept. Material and method: The mechanical behavior of prostheses with the modified framework was evaluated in vitro, under a cantilever mechanical unilateral bending test. Two representative groups were included in the all-on-four concept, with a G1 test group (n = 10) containing modified frameworks and a G2 control group (n = 10) that included full acrylic prostheses. The samples were submitted to thermal cycling with 500 cycles (5° ± 2 °C for 30 s, and 55° ± 2° for 30 s) and to the mechanical bending test on the cantilever. Result The Mann-Whitney test revealed a significant difference between G1 and G2 (p <0.001). In the descriptive evaluation, G1 averaged 830.50 N until the initial resin fracture, while the control group presented a mean of 403.58N. The maximum resistance until complete fracture was recorded in G1, with a mean of 903.03N, while in G2, a mean of 435.20N was recorded. The linear vertical component of the flexion was 0.68 mm and 0.39 mm until the initial fracture of the bar, respectively for G1 and G2. Conclusion The modified framework for the all-on-four protocol determined better mechanical performance when compared to the same full acrylic prosthesis model.

Application of the temporary arterial sound at the footwears of the lower hideship vessels (review and methods of temporary succession)

Damage to the vessels remains an urgent and complicated issue of angio-surgery, both in the curative and organizational terms. In the course of the anti-terrorist operation in eastern Ukraine in 2014 — 2018, damage to major vessels requiring reconstructive interventions occurred in 2 % of the victims. In 90 % of the wounded, trauma to the vessels of the lower extremities was noted. In order to prevent the development of irreversible limb ischemia and its amputation in the trauma of major vessels in the conditions of the implementation of the surgical tactic «Damage control», the method of temporary shunting of the trunk vessels of the extremity deserves attention, which allows to restore blood flow through damaged major arteries in the short term, to prevent the development of irreversible ischemia and save the limb. Temporary bypass must be the initial stage of reconstructive surgery on the damaged major artery of the limb.The article describes the main historical stages of the inventions and improvements of temporal vascular shunts. The classification of temporal vascular shunts is given, their characteristics and detailed method of application are given. Temporary vascular shunts are effective; the possibility of their application should be considered when treating wounds of the vessels of the limbs of practically all types, in particular proximal veins. The main advantage of such shunts is to ensure early recovery of blood flow and to reduce the negative effects of arterial ischemia and venous hypertension. Unlike ligation, temporal bypass surgery is an element of multi-stage surgical treatment or damage control surgery. Despite the desire to maximize the implementation of primary reconstructive techniques at the stages of medical evacuation, for various reasons (delayed evacuation, intense combat and medical conditions) the frequency of the use of temporary prosthesis will not decrease. Therefore, in order to improve the results of treatment of injuries with damage to the main vessels, experimental and clinical testing of the use of the temporary prosthesis method in the implementation of the surgical tactic «damage control» is required.

The Use of Preparatory/Evaluation/Training Prostheses in Developing Evidenced-Based Practice in Upper Limb Prosthetics

ABSTRACT As an evidence-based practice criterion becomes more commonplace in the practice of prosthetics, upper limb prosthetics may find itself at a disadvantage in meeting the new standards. According to the most recent information, the number of upper limb amputations performed each year, at the wrist disarticulation level and higher, is about 2,000. Whereas, the number of lower limb amputations, at the Symes level and higher, number over 65,000 per year. This sets the ratio of upper limb prostheses to lower limb fittings at approximately 1 to 30. This article will present an alternative approach to meeting the need for objective clinical documentation by using case-specific methodology. This involves the routine use of temporary prostheses, which have historically been used to prepare, evaluate, and train amputees to develop successful functional outcomes. Several case studies are presented, which provide examples of the three types of preparatory/evaluation/training prostheses: body-powered, hybrid, and electronic.

Use of temporary prostheses to repair difficult hernias.

Use of temporary prostheses to repair difficult hernias.