closure method
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Polymer ◽  
2021 ◽  
pp. 124314
Author(s):  
Hualong Zhang ◽  
Wen Xu ◽  
Zhigang Wu ◽  
Chao Liu ◽  
Chunyan Hong

2021 ◽  
Vol 76 (09) ◽  
pp. 517-523
Author(s):  
Sibusiso Rockfort Mthethwa ◽  
Lesibana Godfrey Maguga

The movement of teeth during processing of complete dentures disturbs the harmonious occlusal scheme established at the final wax try-in stage. Aims and objectives: to investigate the effect of RS flask closure on occlusal vertical dimensions of complete dentures. The mean occlusal vertical dimension of complete maxillary and mandibular dentures fabricated by the conventional flask closure were measured and compared with that of dentures fabricated by RS flask closure. Design: A pre-test post-test control group experimental design. Methods: Thirty sets of complete maxillary and mandibular wax trial dentures were randomly assigned to experimental groups. Fifteen sets were assigned to conventional flask closure and the remainder to RS flask closure. Compression molding with a long curing cycle was performed for the processing of the dentures. Pre-processing and post-processing occlusal vertical dimensions were determined. Results: The mean occlusal vertical dimensions of wax trial dentures assigned to either group were similar. The data produced substantial evidence to reject the null hypothesis that the post-processing mean occlusal vertical dimensions of both groups were equal. Conclusion: The occlusal vertical dimensions produced by dentures clamped by the RS flask closure were significantly less than those produced by dentures clamped by the conventional flask closure. 


2021 ◽  
Vol 83 (4) ◽  
Author(s):  
Hildeberto Jardón-Kojakhmetov ◽  
Christian Kuehn ◽  
Andrea Pugliese ◽  
Mattia Sensi

AbstractWe study a fast–slow version of an SIRS epidemiological model on homogeneous graphs, obtained through the application of the moment closure method. We use GSPT to study the model, taking into account that the infection period is much shorter than the average duration of immunity. We show that the dynamics occurs through a sequence of fast and slow flows, that can be described through 2-dimensional maps that, under some assumptions, can be approximated as 1-dimensional maps. Using this method, together with numerical bifurcation tools, we show that the model can give rise to periodic solutions, differently from the corresponding model based on homogeneous mixing.


Author(s):  
Shuyang Liu ◽  
Samantha N. Andrews ◽  
Landon H. Morikawa ◽  
Maya Y. Matsumoto ◽  
Kristin A. Mathews ◽  
...  

2021 ◽  
Vol 10 (15) ◽  
pp. 3260
Author(s):  
Akira Yoshida ◽  
Hiroki Kurumi ◽  
Yuichiro Ikebuchi ◽  
Koichiro Kawaguchi ◽  
Kazuo Yashima ◽  
...  

Endoscopic submucosal dissection (ESD) and en bloc resection of stomach and colon tumors have become common. However, mucosal defects resulting from ESD may cause delayed bleeding and perforation. To prevent adverse events, we developed a new clip closure technique, namely, the loop and open–close clip closure method (LOCCM), and aimed to examine its efficacy after ESD for stomach and colon tumors. The LOCCM uses loop and open–close clips. Here, the open–close clip was used to grasp the loop to bring it to the edge of the post-ESD mucosal defect. Another clip with a loop was then inserted into the opposite edge and clipped to the contralateral mucosa to pull both edges together. Once apposed, additional clips facilitated complete closure. The LOCCM was performed in 19 patients after ESD at Tottori University between October 2020 and March 2021. The outcomes retrospectively analyzed were the LOCCM success and adverse event rates. The complete closure rate using LOCCM was 89.5% and none of the patients had post-ESD bleeding or perforation. The results show that LOCCM is an effective and safe closure technique for mucosal defects after stomach and colon ESD to prevent bleeding and perforation.


2021 ◽  
Vol 8 (24) ◽  
pp. 2089-2093
Author(s):  
Hari Om Singh Sengar ◽  
Kailash Charokar ◽  
Prashant Nema

BACKGROUND The method adopted for incision closure has an influence on the outcomes of wound healing. The study was conducted to compare the ‘mass closure’ method with the conventional layer closure, and to find out the suitable surgical closure method for midline laparotomy incision. METHODS A prospective comparative study was conducted at a tertiary care teaching institute over a period of 2 years. Patients > 14 years of age, who were operated on by midline laparotomy incision, were included in the study group (N = 60). Either a ‘mass closure’ or the conventional layer closure method was adopted as per the operating surgeon’s choice. Based on the method used the cases were allocated into two groups, each with 30 patients. In the ‘mass closure’ group (Group A), continuous suturing was used in 22 patients and interrupted closure in 8 patients. In the ‘layered closure’ group (Group B), the abdomen was closed in layers using absorbable suture for the peritoneum (together with transversalis fascia) and non-absorbable for the linea alba. The patients were followed up postoperatively, and for 6 months after discharge from the hospital in follow-up for the detection of the wound complications. RESULTS The mean age of patients in Group A was 40.9 ± 15.48 years, and 41.03 ± 14.73 in Group B. There were 25 males and 5 females in Group A and 23 males and 7 females in Group B. Closure time of incision was significantly lower in the mass closure group (P < 0.05). The postoperative complications in Group A was 20 % (Seroma-1 patient, infection-3, partial wound dehiscence-1, and hernia-1). In Group B, the overall complication rate was 36 % (Seroma-3 patients, infection-5, burst abdomen- 1, hernia- 2). CONCLUSIONS Mass closure method is better than the conventional layer closure for the midline laparotomy incision. KEYWORDS Laparotomy, Layered Closure, Midline Incision, Mass Closure, Suture Technique


2021 ◽  
Vol 2021 ◽  
pp. 1-5
Author(s):  
Peng Tian ◽  
Yao-min Li ◽  
Zhi-jun Li ◽  
Gui-jun Xu ◽  
Xin-long Ma

Purpose. To compare the efficacy and safety of zip-type skin closure device (SCD) and staple in total knee arthroplasty (TKA). Methods. Potential academic articles were identified from PubMed, Springer, ScienceDirect, and Cochrane Library from the inception of electronic databases to July 2020. The statistical analyses were performed with RevMan 5.1. Results. One randomized controlled trial (RCT) and 5 non-RCTs met the inclusion criteria. Present meta-analysis reveals that SCD is associated with lower wound pain score, scar score, and readmission compared with a staple. No significant differences are identified in terms of wound total complications, dehiscence, blisters, and infection. Conclusions. Comparing with a staple, zip-type SCD is a less painful skin closure method with fewer medical cost undergoing TKA.


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