Gutenberg Open Science

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ZeitschriftenaufsatzAccess status: Open Access ,
Emotional enhancement and asymmetric context congruency effects for incidental memories of 2D and VR scenes
(2026) Wessels, Marlene; Valuch, Christian; Schacht, Anne; Kulke, Lousia
Virtual reality (VR) has become more affordable and is increasingly used for therapeutic and educational purposes where it is important to transfer learned experiences to the real world. But is it worth switching from conventional 2D displays to VR to strengthen such learning effects? Here, we investigated how well incidentally learned emotional and neutral scenes, encoded either in VR or as a conventional 2D presentation (encoding context VR, 2D), could be recognized in congruent or incongruent presentation contexts (retrieval context VR, 2D). Using a 3 × 2 × 2 mixed design, 60 participants viewed (and incidentally encoded) emotional and neutral scenes in VR and as 2D video. After 24 h, 30 participants performed an unannounced old-new judgment task in 2D, while the others completed it in VR. 2D-encoded scenes were recognized better in the congruent 2D than in the incongruent VR context. Context congruency effects were less pronounced for VR-encoding. On average, participants reliably recognized VR-encoded scenes in the incongruent 2D retrieval context. Participants retrieved emotional scenes better and more confidently than neutral ones, independent of encoding context. However, scenes experienced in VR were more likely to be perceived as emotional than when the same scenes were viewed as 2D video. Taken together, the presentation mode of a scene (2D, VR) served as a contextual mnemonic aid, mainly for 2D-encoded scenes. Overall, VR-encoded scenes were less dependent on context congruency effects, suggesting a reduced sensitivity to the retrieval context rather than a direct transfer advantage. Finally, VR-encoding increased the likelihood that the content would be perceived as emotional, suggesting its potential as a useful educational and therapeutic tool.
ZeitschriftenaufsatzAccess status: Open Access ,
A bibliometric analysis of the research landscape of vulvar cancer
(2026) Klamminger, Gilbert Georg; Nigdelis, Meletios P.; Wagner, Mathias; Hasenburg, Annette; Degirmenci, Yaman
Background We present a comprehensive bibliometric analysis to characterize the contemporary research landscape of vulvar cancer (VC). Materials and methods To identify publications relevant to VC research, a systematic search of the Web of Science (WoS) database was conducted. Key bibliographic information was extracted, and quantitative analyses and network mapping (VOSviewer) were performed. Results A total of 3702 publications were identified, with the earliest record dating back to 1946 and a steadily increasing publication volume over recent decades. Most of the literature has been published in English. The leading journals publishing VC research were Gynecologic Oncology (Elsevier) and the International Journal of Gynecological Cancer (Elsevier). A subsequent keyword analysis revealed distinct conceptual domains within the field, and an examination of the ten most frequently cited articles highlighted recurrent clinically relevant themes, including lymph node assessment/management and HPV genotype distribution. Conclusion In this analysis, we outline key research trends, influential regions, leading journals, and the most cited works in VC research. Such bibliometric summaries may serve as a useful guide for future research efforts and support funding decisions.
ZeitschriftenaufsatzAccess status: Open Access ,
Current treatment concepts in implantology in oral and maxillofacial surgery in Germany
(2026) Pabst, Andreas; Wiegner, Jörg; Schneider, Matthias; Weyer, Nils; Bartella, Alexander; Becker, Philipp; Zeller, Alexander-N.
Introduction Dental implantology is a core competency of Oral and Maxillofacial Surgery (OMFS). However, detailed data on the current treatment concepts in implantology in OMFS in Germany are limited. This study analyzed current treatment concepts, clinical practices, decision-making factors, and the adoption of advanced technologies in implantology in OMFS in Germany. Material and methods A dynamic online questionnaire with up to 38 questions was sent to 1391 OMFS members of the German Association of Oral and Maxillofacial Surgery (DGMKG). The questionnaire collected general and specific data, such as implantological experience, time points of implant placement (immediate vs. delayed), implant systems and designs, imaging modalities, digital planning, guided surgery, healing, (immediate) prosthetic restorations, follow-up, pre- and postoperative management, and the use of platelet-rich fibrin (PRF). Data analysis was descriptive and anonymous. Results 276 OMF surgeons participated in the study, with an average of 20 years of experience in implantology. Most worked in private practices without inpatient facilities (66.3%). Most placed 201–500 implants per year (34.78%). 78.99% performed immediate implant placement, mainly to shorten treatment time and preserve alveolar bone. Cone beam CT (88.42%) and panoramic radiographs (68.34%) were the most common imaging modalities. Virtual planning was used by 73.08%, and guided surgery was used by 66.54%, mainly with externally produced guides. Most participants preferred closed implant healing (83.53%). Immediate prosthetic restorations (PR) were rarely performed (57.83% never), and 70.92% did not carry out definitive PR. Risk factors for implant failure were poor oral hygiene (84.72%), limited surgical experience (76.39%), and smoking (75%). PRF was used routinely by 9.72%, and selectively by 45.83% Conclusion The results indicate high implantological standards and heterogeneity in current treatment concepts in OMFS implantology in Germany. Possible reasons may include the surgeon’s training and experience, the private practices’ and clinics’ organizational and structural features, and the referral network. Clinical relevance This study underscores the importance of implantological education and training, interdisciplinary communication, and the further implementation of guidelines.