Publications by authors named "Nicola DE Angelis"

Objectives: Successful implant therapy must also ensure the integration of the soft tissues around the crown/abutment emergence profile. The existing literature does not consistently agree on the necessity of a minimal amount of keratinized tissue (KT), though it appears advantageous for the long-term stability and aesthetics of implants. The purpose of this clinical retrospective study is to compare the effectiveness of amnion/chorion membrane and autogenous subepithelial connective tissue in increasing the keratinized mucosa and maintaining it over a 5-year follow-up.

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The aim of this study was to systematically revise the state of art of the accuracy of digital and conventional impressions in clinical full-arch scenarios. Electronic and manual searches were conducted up to December 2024. Only trials comparing the accuracy of digital versus conventional impressions were selected by two independent reviewers.

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  • The study aims to provide updated evidence for managing stage I colon cancer (CC) post-surgery, focusing on recurrence rates and risk factors.
  • Despite low recurrence risk, some guidelines suggest intensive follow-up is unnecessary, but data on actual recurrence rates is limited.
  • The findings reveal a 5% recurrence rate, primarily systemic, with significant risk factors including tumor characteristics and patient demographics, suggesting a need for improved postoperative follow-up strategies.
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Background: While total mesorectal excision is the gold standard for rectal cancer, the optimal surgical approach to achieve adequate oncological outcomes remains controversial. This network meta-analysis aims to compare the histopathological outcomes of robotic (R-RR), transanal (Ta-RR), laparoscopic (L-RR), and open (O-RR) resections for rectal cancer.

Materials And Methods: MEDLINE, Embase, and the Cochrane Library were screened from inception to June 2024.

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Colorectal surgery is one of the specialties that have significantly benefited from the adoption of robotic technology. Over 20 years since the first robotic rectal resection, the Intuitive Surgical Da Vinci system remains the predominant platform. The introduction of new robotic systems into the market has enabled the first documented total mesorectal excision (TME) using alternative platforms.

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Background: The aim of the present parallel clinical study is to evaluate the efficacy of 3D-printed biopolymers compounded with osteoconductive material (beta-tricalcium phosphate and hydroxyapatite) for soft tissue closure after tooth extraction.

Materials And Methods: this study followed the CONSORT reporting guidelines; 39 patients were treated with socket preservation using 3D-printed biopolymers and randomly divided into 3 groups (Test 1, Test 2, and Control). All cases were treated without flap elevation, careful cleaning and debridement of the sites, and then randomly sealed as follows: In T1, with a 3D-printed disk of poli-D-lactic acid with 10% of hydroxyapatite; in T2, using a 3D-printed disk of poli-ε caprolactone with 20% of β-tricalcium phosphate; and in T3, the socket was left open to heal.

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  • - Robotic surgery is gaining popularity in the surgical field, especially for liver resections, but its effectiveness near major blood vessels needs further investigation.
  • - A study of 1030 patients categorized them into two groups (lesions in contact with major vessels vs. those free from) to compare surgical outcomes before and after adjusting for other variables.
  • - Findings indicated that while the Pringle Manoeuvre was more frequently used in surgeries near major vessels, overall operative time, complication rates, and surgery success were similar between both groups, suggesting robotic surgery is safe even for challenging cases.
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  • This study compares outcomes of open liver resection (OLR), laparoscopic liver resection (LLR), and percutaneous thermal ablation (PTA) in elderly patients (≥70 years) with single hepatocellular carcinoma (HCC) ≤30 mm.
  • A total of 239 patients were analyzed, revealing that PTA resulted in shorter hospital stays and less morbidity than OLR or LLR, but lower 5-year overall and disease-free survival rates.
  • The findings suggest that while PTA is advantageous for specific HCC locations, surgical options (OLR and LLR) offer better long-term survival outcomes for elderly patients.
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The introduction of new technologies in current digestive surgical practice is progressively reshaping the operating room, defining the fourth surgical revolution. The implementation of black boxes and control towers aims at streamlining workflow and reducing surgical error by early identification and analysis, while augmented reality and artificial intelligence augment surgeons' perceptual and technical skills by superimposing three-dimensional models to real-time surgical images. Moreover, the operating room architecture is transitioning toward an integrated digital environment to improve efficiency and, ultimately, patients' outcomes.

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Emergency general surgeons often provide care to severely ill patients requiring surgical interventions and intensive support. One of the primary drivers of morbidity and mortality is perioperative bleeding. In general, when addressing life threatening haemorrhage, blood transfusion can become an essential part of overall resuscitation.

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  • - The study investigated the effectiveness of robotic right colectomy (RRC) compared to laparoscopic right colectomy (LRC) for nonmetastatic pT4 colon cancer, focusing on surgical outcomes like cancer removal success, complication rates, and recovery times.
  • - Results showed similar cancer removal rates and lymph node retrieval between RRC and LRC, but RRC had advantages like fewer conversions to open surgery, less blood loss, and fewer postoperative complications.
  • - Both surgical methods had comparable long-term survival rates, indicating that RRC is a viable option for treating pT4 right colon cancer with better short-term results than LRC.
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The role of robotic surgery for gastrointestinal stromal tumor (GIST) resection remains unclear. This systematic review and meta-analysis aimed to investigate the outcomes of robotic versus laparoscopic surgery in patients requiring surgery for gastric GISTs. MEDLINE, EMBASE, and the Cochrane databases were searched from inception to September 4, 2023.

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  • Minimally invasive liver surgery has become safer and more feasible over time, prompting this study to explore its effectiveness in elderly patients.
  • The research analyzed data from 1070 robotic liver resections across nine European hospitals, focusing on 131 major liver resections and comparing outcomes between patients under and over 65 years old.
  • Results show that while elderly patients had some increased complications, overall short-term outcomes for robotic major liver resection in this group were still satisfactory.
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Background: Although minimally invasive distal pancreatectomy (MIDP) is considered a standard approach it still presents a non-negligible rate of conversion to open that is mainly related to some difficulty factors, as obesity. The aim of this study is to analyze the preoperative factors associated with conversion in obese patients with MIDP.

Methods: In this multicenter study, all obese patients who underwent MIDP at 18 international expert centers were included.

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  • Robotic surgery is becoming popular for planned surgeries, but how it works in emergencies is not well known yet.
  • A new study called the ROEM study will look at how safe and effective robotic surgery is for emergency cases, like when people have serious stomach problems.
  • They will collect information from at least 500 patients across 50 different hospitals to see how well this type of surgery works, while also making sure everything follows ethical rules.
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  • The trauma mortality rate is higher in elderly patients due to age-related physiological changes and frailty, necessitating specialized management guidelines to improve outcomes and minimize unnecessary procedures.
  • Expert surgeons reviewed literature and developed evidence-based recommendations for geriatric trauma care, focusing on frailty assessment, early activation of trauma protocols, and multimodal pain management.
  • Key practices include administering antibiotics selectively for certain traumatic injuries, ensuring timely venous thromboembolism prevention, and involving palliative care teams to address end-of-life discussions with a holistic approach.
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  • This study evaluates three minimally invasive surgical techniques for total mesorectal excision (TME) in treating low/mid locally advanced rectal cancer: laparoscopic, robotic, and transanal TME.
  • An analysis of 468 patients revealed that robotic and transanal TME had lower complication and conversion rates compared to laparoscopic TME, with robotic TME showing fewer anastomotic leaks.
  • The study concludes that robotic and transanal TME approaches can lead to quicker recovery times and fewer postoperative issues compared to laparoscopic TME, indicating their potential advantages for patient outcomes.
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Coaxial implants with an inclined neck might overcome some problems related to angulation of the implant axis when using tilted implants. Therefore, the aim of the present work was to conduct a narrative review of the current literature and to present a case series comparing traditional and coaxial external hex implants in full-arch immediate loading rehabilitations of the maxilla. A total of 13 external hex tapered implants (Southern Implants) was inserted in the upper jaw of 3 patients.

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Primary segmental omental torsion (PSOT) is a very rare cause of acute abdominal pain, and it may often imitate the clinical picture of acute appendicitis. In instances of acute abdominal pain without anorexia, nausea, and vomiting, omental torsion should be included in the differential diagnosis. Any misdiagnosis may lead to major complications such as intraabdominal abscesses and adhesions.

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  • The study looked at how well emergency surgeons use certain guidelines to treat serious problems from diseases like ulcerative colitis and Crohn's disease.
  • A survey was sent to surgeons worldwide to find out what they know and how they handle these tricky cases, with 242 surgeons answering.
  • Results showed that while many surgeons followed most guidelines, they struggled with some key areas, showing that teamwork between doctors is really important for treating these diseases.
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Improved recovery after surgery leads to a significant reduction in postoperative morbidity, but this is concentrated in the intra- and postoperative periods. Prehabilitation complements this, by taking charge of the pre-operative phase. Its aim is to improve pre-operative functional capacity and physical, nutritional and psychosocial status.

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  • * Higher levels of procalcitonin (>0.5 ng/mL) were found to be independent risk factors for complications, surgery, and even mortality in these patients.
  • * The research suggests that measuring procalcitonin levels in the emergency department could be a valuable tool for risk stratification in managing this condition.
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Background: Controversies remain on the diagnostic strategy in suspected AA, considering the different settings worldwide.

Material And Methods: A prospective observational international multicentric study including patients operated for suspected AA with a definitive histopathological analysis was conducted. Three groups were analyzed: (1) No radiology; (2) Ultrasound, and (3) Computed tomography.

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