Soft linings are compliant, viscoelastic materials used to form all or part of the fit surface of a denture. Their complete function is debatable, but they serve to distribute the forces of mastication more evenly and to absorb energy. Other uses include obturators and maxillo-facial prostheses. This review will cover both the so-called 'permanent' soft-lining materials and temporary soft reline materials, often referred to as tissue conditioners.
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An analytical solution for internal forces of shallow circular low-to-vacuum tunnel linings in soft soils.
Sci Rep
December 2024
State Key Laboratory of Shield Machine and Boring Technology, Zhengzhou, 450001, China.
This paper presents an analytical solution derived with force method for the internal forces in the ring lining of maglev train tunnels, which are typically in a circular section and shallowly buried with low vacuum air pressure in the lining. The model incorporates the vacuum pressure induced by the differences in air pressures outside and inside the lining, and the vacuum pressure is assumed to be the active load exerting to the outside of the lining. The model assumes the vertical overburden acting on the lining is proportional to the soil depth at every particular point along the tunnel lining circumference.
View Article and Find Full Text PDFExtraneural Soft Tissue Perineurioma: A Report of a Rare Case of Peripheral Nerve Sheath Tumor.
Cureus
November 2024
General Surgery, Sree Balaji Medical College and Hospital, Chennai, IND.
Extraneural perineuriomas are rare, benign soft tissue tumors arising from perineurial cells, which form the protective lining of peripheral nerves. These tumors are infrequently encountered in the foot, posing diagnostic challenges due to their rarity and non-specific clinical presentation. Here, we describe the case of a 45-year-old woman, who had a swelling over the right foot dorsum for four years for which an excision biopsy was done.
View Article and Find Full Text PDFAnastomosing hemangioma of the kidney: A rare case report.
Int J Surg Case Rep
November 2024
Department of Pathology, Vardhman Mahavir Medical College and Safdarjung Hospital, New Delhi, India. Electronic address:
Article Synopsis
- Hemangiomas are benign vascular tumors that primarily affect the skin and soft tissues, with anastomosing hemangioma (AH) being a specific subtype that mimics more serious conditions like angiosarcoma; there are fewer than 300 reported cases of renal hemangiomas.
- A case study of a 28-year-old male revealed a left renal mass identified during tests for abdominal pain, with subsequent imaging and surgery confirming the diagnosis of AH through histopathological analysis and specific immunohistochemical markers.
- Accurate diagnosis of AH is crucial to avoid unnecessary treatment and complications, highlighting the need for greater awareness and reporting in the medical community to enhance diagnostic accuracy and patient management.
Article Synopsis
- * This study compares the effectiveness of conventional maxillofacial obturators versus those lined with a soft-liner, examining their impact on masticatory performance, speech, and quality of life in patients.
- * Results show that the relined obturator significantly improves masticatory performance (3.22 vs. 2.74) and speech quality (lower jitter), highlighting the benefits of using a soft-liner in prosthetic rehabilitation.
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