https://ir.ymlib.yonsei.ac.kr/handle/22282913/169049 2026-05-25T22:18:43Z https://ir.ymlib.yonsei.ac.kr/handle/22282913/211610 Title: Perceptions of shared decision-making among patients and dental professionals Authors: Jung, Ji-Young; Ko, Kyung-A; Park, Yu An; Chi, Christina; Naenni, Nadja; Lee, Jung-Seok Abstract: Objectives: To compare perceptions of shared decision-making (SDM) among patients, dentists, and dental hygienists participating in the same dental treatment-planning encounter and to examine differences in perceived involvement across SDM components. Methods: A cross-sectional questionnaire study was conducted at a university dental hospital and included 60 dentists, 30 dental hygienists, and 180 patients. Perceived SDM involvement was assessed using the validated Korean versions of the 9-item Shared Decision Making Questionnaire (SDM-Q-9) for patients and the Shared Decision Making Questionnaire-Physician Version (SDM-Q-Doc) for dental professionals. Responses were recorded on a 6-point Likert scale and transformed to a 0-100 scale, with higher scores indicating greater perceived involvement. Group differences and factors associated with SDM scores were analyzed using one-way analysis of variance and linear regression models, respectively. Results: A total of 270 participants completed the survey. SDM scores were high across groups, ranging from 72 to 84 of 100. Patients reported significantly higher total SDM scores than dentists and dental hygienists. Across all respondent groups, recognition that a decision needed to be made and agreement on how to proceed received the highest ratings. In contrast, weighing treatment options was consistently rated lowest. Conclusions: The need for a decision and agreement on the final decision were rated most positively across all groups. However, variation across specific components, particularly the weighing of treatment options, indicates the need for a more structured approach to enhance patient understanding and integrate patient preferences in routine dental care. Clinical significance: Differences in shared decision-making perceptions between patients and dental professionals highlight the importance of reflecting on clinical communication. Strengthening structured decision-making processes may enhance patient-centered care in dentistry. 2026-05-01T00:00:00Z https://ir.ymlib.yonsei.ac.kr/handle/22282913/211921 Title: Advancing the diagnosis of peri-implant diseases: From histological foundations to next-generation ultrasonographic diagnostic markers Authors: Galarraga-Vinueza, Maria Elisa; Cha, Jae-Kook; Tavelli, Lorenzo; Feres, Magda Abstract: Background This critical review provides a comprehensive analysis of the histological foundations, current clinical diagnostic standards, and emerging ultrasonographic methods for diagnosing peri-implant diseases.Methods An electronic search in Medline (PubMed) database was conducted to identify original and review articles focused on the histological foundation and diagnostic approaches of peri-implant diseases. This review provides an integrated perspective on the evolution of peri-implant diseases diagnostics, focusing on the clinical and radiographic criteria established by the latest consensus guidelines. It outlines the histological features of peri-implant diseases and discusses recent advancements in ultrasonographic imaging approaches for their characterization and diagnosis. This review further explores elements such as peri-implant anatomical landmarks, echo intensity, tissue perfusion, and strain elastography.Results Histological studies have defined the peri-implant mucosal architecture and inflammatory patterns characteristic of disease progression. While conventional diagnostics have relied on clinical examination and radiographic imaging, high-frequency ultrasound (HFUS) has recently emerged as a promising noninvasive imaging tool enabling detailed assessment of peri-implant tissue dimensions, echo intensity, vascular perfusion, and the extent of inflammatory involvement. Echo intensity mapping aids in the visualization and quantification of peri-implant lesions and the identification of associated bone defects. These imaging advancements not only complement current diagnostic methods but also deepen our understanding of peri-implant disease dynamics. Observed correlations between histological findings and ultrasonographic features can support the development of a new diagnostic framework incorporating HFUS-derived markers for detecting peri-implant lesions and evaluating the severity of inflammation.Conclusions Integrating HFUS and power Doppler imaging into peri-implant diagnostics allows real-time, noninvasive visualization of key structures such as the supracrestal adherent connective tissue, buccal bone levels, and tissue perfusion. These modalities can complement existing standards and enhance diagnostic precision by identifying the extent of peri-implant lesions and quantifying the severity of inflammation.Plain Language Summary Peri-implant diseases can affect the tissues around dental implants and can lead to inflammation and bone loss. Understanding how these diseases develop and how best to diagnose them is essential for improving patient care. The present narrative review looked at scientific studies that examined the tissues around implants and the methods used to diagnose peri-implant diseases. It explains what researchers have learned from tissue (histological) studies and summarizes the current clinical and X-ray based diagnostic standards. It also highlights new advances in high-frequency ultrasound (HFUS), a technology that can provide detailed, real-time images of the soft tissues and bone around implants without radiation. Recent studies show that HFUS can measure tissue thickness, detect inflammation, visualize blood flow, and help identify early bone defects. These ultrasound features match what is known from histology, suggesting that HFUS could become an important tool for detecting peri-implant disease earlier and more accurately. Overall, adding HFUS and power Doppler imaging to current diagnostic methods can improve the evaluation of peri-implant tissues. These noninvasive techniques can help clinicians see key structures more clearly, assess inflammation, and better understand the severity of the disease. 2026-04-01T00:00:00Z https://ir.ymlib.yonsei.ac.kr/handle/22282913/212238 Title: Thread Depth Effects on Stability and Positional Accuracy in Guided Immediate Implants: A Randomized Controlled Trial Authors: Kwon, Na-Yoon; Jung, Ji-Young; Ko, Kyung-A; Park, Seung-Hyun; Strauss, Franz Josef; Lee, Jung-Seok Abstract: Objectives To evaluate the influence of implant thread depth on implant stability and positional accuracy in fully guided immediate implant placement.Materials and Methods Fifty-four patients received a reference tapered (BLT), a standard-thread (MST), or a deep-thread implant (MDT). Fifty-four implants were placed using fully guided surgery and evaluated over 1-year follow-up. Primary outcomes were implant stability (insertion torque, ISQ, ISV). Secondary outcomes included positional accuracy and marginal bone level (MBL) at 12 months.Results Primary and longitudinal stability were comparable across groups. Insertion torque was highest for MDT implants, followed by MST and BLT implants (BLT: 35.28 +/- 11.18; MST: 40.00 +/- 11.88; MDT: 43.89 +/- 10.92 Ncm; p = 0.062). A higher proportion of MDT implants achieved insertion torque >= 40 Ncm (MDT: 14/18; MST: 12/18; BLT: 8/18). Angular deviation differed among implant groups (MDT: 5.57 degrees +/- 3.71 degrees; BLT: 4.73 degrees +/- 2.46 degrees; MST: 3.58 degrees +/- 1.81 degrees; p = 0.062). In subgroup analysis comparing implants differing only in thread depth (MST vs. MDT), angular deviation was significantly greater for MDT (p = 0.029), particularly in molar sites. At 12 months, MBL did not differ significantly among groups.Conclusions In fully guided immediate implant placement, deeper-thread implants showed higher insertion torque values but were associated with greater angular deviation, while longitudinal stability and marginal bone levels remained comparable. Deeper-thread designs may be beneficial when enhanced primary stability is required, provided careful angulation control is ensured.Trial Registration cris.nih.go.kr Identifier: KCT0009402; This clinical trial was not registered prior to participant recruitment and randomization 2026-04-01T00:00:00Z https://ir.ymlib.yonsei.ac.kr/handle/22282913/212227 Title: Immediate Loading on Tapered Versus Straight Multiple Implants: A 3-Year Follow-Up of a Randomized Clinical Trial Authors: Song, Young Woo; Park, Seung-Hyun; Strauss, Franz J.; Yoo, Sung Jin; Park, Jin-Young; Cha, Jae-Kook; Jung, Ui-Won Abstract: Objective To evaluate the clinical and radiographic outcomes at 3 years following immediate loading of tapered implants (TI) versus straight implants (SI) from a randomized controlled trial (RCT).Materials and Methods Of the 41 patients who received 93 implants in the original RCT (TI group: 23 patients, 50 implants; SI group: 18 patients, 43 implants), those who completed 3-year follow-up were included in this analysis. Implant survival and success rates, as well as changes in marginal bone loss (MBL), were assessed and compared using Kaplan-Meier curves, Cox proportional hazards models, and linear mixed-effects models.Results A total of 28 patients with 61 implants were evaluated (TI group: 15 patients, 32 implants; SI group: 13 patients, 29 implants). At 3 years post-immediate loading, cumulative survival rates at the patient level were 95.8% for the TI group and 78.3% for the SI group (intergroup p = 0.109). At the implant level, survival rates were 96.2% for TI and 90.0% for SI (intergroup p = 0.351). All implant failures occurred within the first year (1 implant in TI; 5 implants in SI), and no further losses were recorded thereafter. However, two TI implants in a single patient exhibited progressive peri-implantitis during follow-up. Mean MBL values were 0.61 +/- 1.70 mm for the TI group and 0.53 +/- 0.53 mm for the SI group, with no statistically significant differences between groups (intergroup p = 0.428).Conclusion It could be cautiously concluded that the TI rather than the SI might be a more predictable option in terms of achieving an optimized initial stability for immediate loading in the posterior region. Once osseointegration was successfully achieved, however, the macro-design of the implant might not have an influence on the clinical and radiographic outcomes including the osseointegrated state during the 3 years of observational period. 2026-04-01T00:00:00Z