Purpose: This study investigated the impact of the guide hole height on the accuracy of implant placement using CAD/ CAM-fabricated surgical guides in resin models. The hypothesis is that decreasing the height of the guide hole reduces placement accuracy. Materials and Methods: Ten identical partially edentulous maxillary models were each fitted with surgical guides featuring guide hole heights of 1 mm, 3 mm, and/or 5 mm. Using a surgical guide and drill kit, implants were placed in six predetermined sites per model. Placement accuracy was evaluated by comparing the actual implant positions with the planned positions using digital scanning and computer software analysis. Statistical analyses were performed using ANOVA and Kruskal-Wallis tests to determine the significance of deviations at both the coronal and apical positions. Results: The average deviations were 0.75±0.33 mm at the coronal position and 1.10±0.51 mm at the apical position. Placement accuracy didnot differ with different guide hole heights. Additionally, errors were consistent regardless of the guide hole height and were not influenced by the type of support or the implant placement site. Conclusion In this rotro study, varying the height of the guide hole did not significantly affect the accuracy of implant placement. The results suggest that guide hole height within the tested range does not have a substantial impact on placement errors. Our findings indicate that factors other than the guide holeheight may play a more critical role in implant placement accuracy.

Purpose: This study investigated the impact of the guide hole height on the accuracy of implant placement using CAD/ CAM-fabricated surgical guides in resin models. The hypothesis is that decreasing the height of the guide hole reduces placement accuracy. Materials and Methods: Ten identical partially edentulous maxillary models were each fitted with surgical guides featuring guide hole heights of 1 mm, 3 mm, and/or 5 mm. Using a surgical guide and drill kit, implants were placed in six predetermined sites per model. Placement accuracy was evaluated by comparing the actual implant positions with the planned positions using digital scanning and computer software analysis. Statistical analyses were performed using ANOVA and Kruskal-Wallis tests to determine the significance of deviations at both the coronal and apical positions. Results: The average deviations were 0.75±0.33 mm at the coronal position and 1.10±0.51 mm at the apical position. Placement accuracy didnot differ with different guide hole heights. Additionally, errors were consistent regardless of the guide hole height and were not influenced by the type of support or the implant placement site. Conclusion In this rotro study, varying the height of the guide hole did not significantly affect the accuracy of implant placement. The results suggest that guide hole height within the tested range does not have a substantial impact on placement errors. Our findings indicate that factors other than the guide holeheight may play a more critical role in implant placement accuracy.

Background: Bulky or multiple lymph node (LN) metastases are associated with poor prognosis in cervical cancer, and the size or number of LN metastases is not yet reflected in the staging system and therapeutic strategy. Although the therapeutic effects of surgical resection of bulky LNs before standard treatment have been reported in several retrospective studies, wellplanned randomized clinical studies are lacking. Therefore, the aim of the Korean Gynecologic Oncology Group (KGOG) 1047/DEBULK trial is to investigate whether the debulking surgery of bulky or multiple LNs prior to concurrent chemoradiation therapy (CCRT) improves the survival rate of patients with cervical cancer IIICr diagnosed by imaging tests. Methods The KGOG 1047/DEBULK trial is a phase III, multicenter, randomized clinical trial involving patients with bulky or multiple LN metastases in cervical cancer IIICr. This study will include patients with a short-axis diameter of a pelvic or para-aortic LN ≥2 cm or ≥3 LNs with a short-axis diameter ≥1 cm and for whom CCRT is planned. The treatment arms will be randomly allocated in a 1:1 ratio to either receive CCRT (control arm) or undergo surgical debulking of bulky or multiple LNs before CCRT (experimental arm). CCRT consists of extended-field external beam radiotherapy/pelvic radiotherapy, brachytherapy and LN boost, and weekly chemotherapy with cisplatin (40 mg/m 2 ), 4–6 times administered intravenously.The primary endpoint will be 3-year progression-free survival rate. The secondary endpoints will be 3-year overall survival rate, treatment-related complications, and accuracy of radiological diagnosis of bulky or multiple LNs.

Purpose: This retrospective study compared the maxillary sinus floor augmentation techniques (lateral and transcrestal approaches) to assess the impact of bone grafting, graft materials, and initial residual bone height (RBH). Materials and Methods: Fifty patients who underwent maxillary sinus floor augmentation for posterior maxillary implant placement were included. Panoramic radiographs were obtained before surgery (T0), immediately after surgery (T1), and 6-10 months post-surgery (T2). Length measurements on panoramic radiographs were performed using a digital caliper at T1 and T2. Statistical validation included one-way ANOVA, t-tests, Mann-Whitney U tests, and correlation analyses. Multivariate linear regression was used to assess associations after adjusting for confounding factors. Results: Of the 50 patients, 35 underwent a transcrestal approach and 15 underwent a lateral approach. The results showed significant endosinus bone gain (ESBG) differences between allogeneic and xenogeneic grafts and no grafts (p < .001). Osteotomy sinus floor elevation without grafting yielded 3.24 ± 1.42 of ESBG. When divided into three groups based on initial RBH, RBH 1 had 27 patients, RBH 2 had 12 patients, and RBH 3 had 11 patients. Within the RBH group 1 (RBH under 4), the lateral approach had significantly greater ESBG than the transcrestal approach (p < .001). Multivariate linear regression analysis confirmed statistically significant associations between the studied variables after adjusting for confounding factors. Conclusion When the RBH is < 4 mm, lateral-approach sinus augmentation and bone grafting should be performed to attain significant ESBG. The RBH, bone graft materials, and sinus elevation techniques vary considerably in ESBG.

The Asian Society of Cardiovascular Imaging-Practical Tutorial (ASCI-PT) is an instructional initiative of the ASCI School designed to enhance educational standards. In 2021, the ASCI-PT was convened with the goal of formulating a consensus statement on the assessment of coronary stenosis and coronary plaque using coronary CT angiography (CCTA). Nineteen experts from four countries conducted thorough reviews of current guidelines and deliberated on eight key issues to refine the process and improve the clarity of reporting CCTA findings. The experts engaged in both online and on-site sessions to establish a unified agreement. This document presents a summary of the ASCI-PT 2021 deliberations and offers a comprehensive consensus statement on the evaluation of coronary stenosis and coronary plaque in CCTA.

Background: Bulky or multiple lymph node (LN) metastases are associated with poor prognosis in cervical cancer, and the size or number of LN metastases is not yet reflected in the staging system and therapeutic strategy. Although the therapeutic effects of surgical resection of bulky LNs before standard treatment have been reported in several retrospective studies, wellplanned randomized clinical studies are lacking. Therefore, the aim of the Korean Gynecologic Oncology Group (KGOG) 1047/DEBULK trial is to investigate whether the debulking surgery of bulky or multiple LNs prior to concurrent chemoradiation therapy (CCRT) improves the survival rate of patients with cervical cancer IIICr diagnosed by imaging tests. Methods The KGOG 1047/DEBULK trial is a phase III, multicenter, randomized clinical trial involving patients with bulky or multiple LN metastases in cervical cancer IIICr. This study will include patients with a short-axis diameter of a pelvic or para-aortic LN ≥2 cm or ≥3 LNs with a short-axis diameter ≥1 cm and for whom CCRT is planned. The treatment arms will be randomly allocated in a 1:1 ratio to either receive CCRT (control arm) or undergo surgical debulking of bulky or multiple LNs before CCRT (experimental arm). CCRT consists of extended-field external beam radiotherapy/pelvic radiotherapy, brachytherapy and LN boost, and weekly chemotherapy with cisplatin (40 mg/m 2 ), 4–6 times administered intravenously.The primary endpoint will be 3-year progression-free survival rate. The secondary endpoints will be 3-year overall survival rate, treatment-related complications, and accuracy of radiological diagnosis of bulky or multiple LNs.

Purpose: This retrospective study compared the maxillary sinus floor augmentation techniques (lateral and transcrestal approaches) to assess the impact of bone grafting, graft materials, and initial residual bone height (RBH). Materials and Methods: Fifty patients who underwent maxillary sinus floor augmentation for posterior maxillary implant placement were included. Panoramic radiographs were obtained before surgery (T0), immediately after surgery (T1), and 6-10 months post-surgery (T2). Length measurements on panoramic radiographs were performed using a digital caliper at T1 and T2. Statistical validation included one-way ANOVA, t-tests, Mann-Whitney U tests, and correlation analyses. Multivariate linear regression was used to assess associations after adjusting for confounding factors. Results: Of the 50 patients, 35 underwent a transcrestal approach and 15 underwent a lateral approach. The results showed significant endosinus bone gain (ESBG) differences between allogeneic and xenogeneic grafts and no grafts (p < .001). Osteotomy sinus floor elevation without grafting yielded 3.24 ± 1.42 of ESBG. When divided into three groups based on initial RBH, RBH 1 had 27 patients, RBH 2 had 12 patients, and RBH 3 had 11 patients. Within the RBH group 1 (RBH under 4), the lateral approach had significantly greater ESBG than the transcrestal approach (p < .001). Multivariate linear regression analysis confirmed statistically significant associations between the studied variables after adjusting for confounding factors. Conclusion When the RBH is < 4 mm, lateral-approach sinus augmentation and bone grafting should be performed to attain significant ESBG. The RBH, bone graft materials, and sinus elevation techniques vary considerably in ESBG.

Purpose: This study investigated the impact of the guide hole height on the accuracy of implant placement using CAD/ CAM-fabricated surgical guides in resin models. The hypothesis is that decreasing the height of the guide hole reduces placement accuracy. Materials and Methods: Ten identical partially edentulous maxillary models were each fitted with surgical guides featuring guide hole heights of 1 mm, 3 mm, and/or 5 mm. Using a surgical guide and drill kit, implants were placed in six predetermined sites per model. Placement accuracy was evaluated by comparing the actual implant positions with the planned positions using digital scanning and computer software analysis. Statistical analyses were performed using ANOVA and Kruskal-Wallis tests to determine the significance of deviations at both the coronal and apical positions. Results: The average deviations were 0.75±0.33 mm at the coronal position and 1.10±0.51 mm at the apical position. Placement accuracy didnot differ with different guide hole heights. Additionally, errors were consistent regardless of the guide hole height and were not influenced by the type of support or the implant placement site. Conclusion In this rotro study, varying the height of the guide hole did not significantly affect the accuracy of implant placement. The results suggest that guide hole height within the tested range does not have a substantial impact on placement errors. Our findings indicate that factors other than the guide holeheight may play a more critical role in implant placement accuracy.

Background: Bulky or multiple lymph node (LN) metastases are associated with poor prognosis in cervical cancer, and the size or number of LN metastases is not yet reflected in the staging system and therapeutic strategy. Although the therapeutic effects of surgical resection of bulky LNs before standard treatment have been reported in several retrospective studies, wellplanned randomized clinical studies are lacking. Therefore, the aim of the Korean Gynecologic Oncology Group (KGOG) 1047/DEBULK trial is to investigate whether the debulking surgery of bulky or multiple LNs prior to concurrent chemoradiation therapy (CCRT) improves the survival rate of patients with cervical cancer IIICr diagnosed by imaging tests. Methods The KGOG 1047/DEBULK trial is a phase III, multicenter, randomized clinical trial involving patients with bulky or multiple LN metastases in cervical cancer IIICr. This study will include patients with a short-axis diameter of a pelvic or para-aortic LN ≥2 cm or ≥3 LNs with a short-axis diameter ≥1 cm and for whom CCRT is planned. The treatment arms will be randomly allocated in a 1:1 ratio to either receive CCRT (control arm) or undergo surgical debulking of bulky or multiple LNs before CCRT (experimental arm). CCRT consists of extended-field external beam radiotherapy/pelvic radiotherapy, brachytherapy and LN boost, and weekly chemotherapy with cisplatin (40 mg/m 2 ), 4–6 times administered intravenously.The primary endpoint will be 3-year progression-free survival rate. The secondary endpoints will be 3-year overall survival rate, treatment-related complications, and accuracy of radiological diagnosis of bulky or multiple LNs.

Purpose: This retrospective study compared the maxillary sinus floor augmentation techniques (lateral and transcrestal approaches) to assess the impact of bone grafting, graft materials, and initial residual bone height (RBH). Materials and Methods: Fifty patients who underwent maxillary sinus floor augmentation for posterior maxillary implant placement were included. Panoramic radiographs were obtained before surgery (T0), immediately after surgery (T1), and 6-10 months post-surgery (T2). Length measurements on panoramic radiographs were performed using a digital caliper at T1 and T2. Statistical validation included one-way ANOVA, t-tests, Mann-Whitney U tests, and correlation analyses. Multivariate linear regression was used to assess associations after adjusting for confounding factors. Results: Of the 50 patients, 35 underwent a transcrestal approach and 15 underwent a lateral approach. The results showed significant endosinus bone gain (ESBG) differences between allogeneic and xenogeneic grafts and no grafts (p < .001). Osteotomy sinus floor elevation without grafting yielded 3.24 ± 1.42 of ESBG. When divided into three groups based on initial RBH, RBH 1 had 27 patients, RBH 2 had 12 patients, and RBH 3 had 11 patients. Within the RBH group 1 (RBH under 4), the lateral approach had significantly greater ESBG than the transcrestal approach (p < .001). Multivariate linear regression analysis confirmed statistically significant associations between the studied variables after adjusting for confounding factors. Conclusion When the RBH is < 4 mm, lateral-approach sinus augmentation and bone grafting should be performed to attain significant ESBG. The RBH, bone graft materials, and sinus elevation techniques vary considerably in ESBG.