Replication of the space between a tooth and its cast crown, using a light-body silicone supported by a heavy-body silicone, is a recognized technique to evaluate the quality of a restoration. This study validates a similar method that is of great clinical and experimental interest. Whatever the type of silicone used, comparison is possible between different technical procedures of crown elaboration (type of impression, type of material, method of spacing, etc.). If an appropriate silicone is used, the cement space may be reproduced and its thickness measured, whatever the localization (cervical, axial, occlusal).

The literature does not establish a single proven method for determining lower facial height, which is called the Vertical Dimension of Occlusion (VDO), and the concept of a vertical comfort range is generally accepted. This study aimed to test the statistical significance of correlations of mandibular shape versus lower facial height in occlusion, using cephalometric measurements. Correlations for 505 consecutive healthy adults were calculated between angles that estimate the lower facial height and angles that estimate the mandibular shape. The mandibular angle (gonial) showed a higher coefficient of correlation (r = 0.691) than the inferior gonial angle. The dispersion remained large, i.e. r2 = 0.478. Cephalometric measurements, despite theirs imperfections, could help the practitioner to understand what the best course of treatment would be in order to obtain a lower facial height in occlusion showing a skeletal harmony with the mandibular shape.

No abstract

Posterior malleolus fractures are known to be caused by a combination of rotation and impaction, resulting in a wide variety of fractures, as published by Bartonicek. Among them is the subgroup known as the "posterior pilon variant," in which the axial impaction mechanism plays a fundamental role. There is no consensus regarding appropriate surgical approaches for these fractures. We describe a posteromedial modified approach, as an alternative to treat posterior pilon malleolar fractures. This approach can be performed safely, with low complication rates and generally with favorable outcomes.Level of Evidence: Diagnostic Level IV. See Instructions for Authors for a complete description of levels of evidence.

consistent with a fracture that had not been initially diagnosed (Figure 1). Ankle Computed tomography (CT) was performed, confirming the diagnosis (Figure 2).