Transition from fractal-dendritic to compact islands for the 2D-ferroelectric SnSe on graphene/Ir(111).

Epitaxial growth is a versatile method to prepare two-dimensional van der Waals ferroelectrics like group IV monochalcogenides which have potential for novel electronic devices and sensors. We systematically study SnSe monolayer islands grown by molecular beam epitaxy, especially the effect of annealing temperature on shape and morphology of the edges. Characterization of the samples by scanning tunneling microscopy reveals that the shape of the islands changes from fractal-dendritic after deposition at room temperature to a compact rhombic shape through annealing, but ripening processes are absent up to the desorption temperature.

Return to work and quality of life after therapy and rehabilitation in oral cancer.

Background: Return to work (REW) after cancer treatment is important for both patients and their families and for society in general. For patients it can be a sign of complete recovery and return to normal life.

Patients And Methods: A total of 755 out of 1,652 patients from 38 hospitals within the German-language area (DÖSAK REHA STUDY) were working at the time their cancer was diagnosed.

Limitations of internal distraction devices in mature patients with cleft lip and palate and severe midface hypoplasia.

Purpose: We evaluated case-sensitive limitations of internal distraction devices (IDDs) to reveal further options for satisfactory outcomes.

Patients And Methods: Two male cleft patients aged 22 years (P1) and 20 years (P2) with severe maxillary hypoplasia were treated over 18 months. Cephalometric analyses and analyses of A-point movements by superimposing lateral cephalograms were done before and after activation of IDDs and after bimaxillary surgery (BIMAX).

Analysis of patients with a cleft of the soft palate with special consideration to the problem of velopharyngeal insufficiency.

The evaluation of therapy concepts for children suffering from cleft palate is an enormous challenge in modern oral and maxillofacial surgery and related disciplines. In the present retrospective survey 1300 patients having clefts, including the soft palate, were studied with special regard to speech improvement operations. Nine hundred fifty four patients had a cleft lip, alveolus and palate and 346 patients only isolated cleft palate.

Demographical and clinical aspects of sports-related maxillofacial and skull base fractures in hospitalized patients.

As many as 30% of all maxillofacial fractures (MFFs) and skull base fractures (SBFs) are reported to be sports-related. Participation in sporting activities has grown worldwide and the number of cases of sports-related injuries has also increased. The aim of this study was to evaluate the data of 3596 patients hospitalized by MFF or SBF over a 6-year period; 147 (4%) of these cases were sports-related (mean age 29.