Αρχειοθήκη ιστολογίου

Πέμπτη 31 Μαρτίου 2022

Key Issues in Use of Prophylactic Steroids to Prevent Hypocalcemia and Voice Dysfunction After Thyroidectomy—Reply

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In Reply We thank Ms Kane and colleagues for their feedback on our article.
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Vestibular Rehabilitation for Unilateral Peripheral Vestibular Deficits

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In the 1940s, Cawthorne and Cooksey noted that patients with unilateral vestibular dysfunctions who exercised coped better with their symptoms and made a faster recovery than patients who did not exercise. These original exercise protocols were developed to treat patients with labyrinth injury resulting from head injury or surgery. Vestibular rehabilitation can be defined as a set of exercises designed to facilitate central nervous system plasticity through adaptation or by generating substitute mechanisms among patients with balance disorders, thus improving their overall stability and helping them resume their daily activities. Vestibular rehabilitation has been practiced for almost 70 years and evidence related to its efficacy and effectiveness has increased over the last 15 to 20 years. According to the Cochrane systematic review by McDonnell and Hillier, there is moderate to strong evidence that vestibular rehabilitation (movement, exercise based) is a safe and effective approach for unilateral peripheral vestibular disorders.
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Evaluation of digital construction, production and intraoral position accuracy of novel 3D CAD/CAM titanium retainers

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Abstract

Objectives

New opportunities have arisen to manufacture three-dimensional computer-aided design/computer-aided manufacturing (3D CAD/CAM) retainers from titanium blocks by digital cutting technology. These novel technologies need to fulfill requirements regarding digital planning and position accuracy. The aim of the present study was to investigate the digital construction, the CAD/CAM production and the intraoral positioning accuracy of custom-manufactured novel 3D CAD/CAM titanium retainers.

Materials and methods

A total of 37 prime4me® RETAIN3R (Dentaurum, Ispringen, Germany) retainers were inserted to stabilize the upper anterior front teeth. Following insertion, an intraoral scan was used to record the position. The intraoral position was compared to the virtual setup using 3D superimposition software. Measurement points were evaluated in all three dimensions (horizontal, sagittal and vertical planes). Data were analyzed using Kruskal–Wallis test followed by Dunn's multiple comparison test.

Results

A total of 185 measurements were performed. The horizontal plane and the sagittal plane demonstrated a high level of positioning accuracy between the planned and the intraoral position. Statistically significant deviations between the preceding virtual setup and the intraoral situation were observed in the vertical dimension. Within the retainer, the intraoral positioning accuracy decreased for the measurement points in the direction of the distal retainer segment.

Conclusion

Based on the results, the present study shows a high level of congruence between the 3D virtually planning and the final intraoral position of the fabricated novel 3D CAD/CAM titanium retainers.

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Expert consensus on dental caries management

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International Journal of Oral Science, Published online: 31 March 2022; doi:10.1038/s41368-022-00167-3

Expert consensus on dental caries management
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