Journal of Dental Sciences最新文献_第4页

Impact of scan body splinting on the accuracy of complete-arch digital implant impressions 扫描体夹板对全弓数字种植体印模精度的影响

IF 3.1 3区医学

Journal of Dental Sciences Pub Date : 2025-07-11 DOI: 10.1016/j.jds.2025.07.002

Hale Arikan Kalayci , Sema Merve Uzel , Ilser Turkyilmaz , Mackenzie Hunt , Mustafa Baris Guncu

{"title":"Impact of scan body splinting on the accuracy of complete-arch digital implant impressions","authors":"Hale Arikan Kalayci , Sema Merve Uzel , Ilser Turkyilmaz , Mackenzie Hunt , Mustafa Baris Guncu","doi":"10.1016/j.jds.2025.07.002","DOIUrl":"10.1016/j.jds.2025.07.002","url":null,"abstract":"<div><h3>Background/purpose</h3><div>The accuracy of intraoral scanners in capturing complete-arch implant impressions remains a subject of ongoing investigation. This study aimed to evaluate the influence of different scanning strategies and the effect of splinting scan bodies on the accuracy of complete digital scans of the mandible.</div></div><div><h3>Materials and methods</h3><div>A master model of an edentulous mandible with four dental implants was used. The implants were positioned bilaterally in the regions of the mandibular lateral incisors and second premolars. A laboratory scanner was utilized to digitize the reference model. Three experimental groups were used to evaluate the effects of different scanning strategies and auxiliary reference methods on scan accuracy: Group A (single-stage scan), Group B (two-stage scan without additional references), and Group C (two-stage scan with additional reference points).</div></div><div><h3>Results</h3><div>A total of 45 digital scans were analyzed. To evaluate scan accuracy, linear deviations were measured at the four implant sites and compared against the digital reference model. Group A consistently demonstrated the highest accuracy, with the lowest overall mean linear deviation of 39.57 ± 8.69 μm across all implant positions. Group B recorded a marginally higher mean deviation of 42.80 ± 24.24 μm. Group C showed the greatest linear deviation (70.60 ± 17.69 μm), and the differences were statistically significant when compared with both Groups A and B (<em>P</em> < 0.05).</div></div><div><h3>Conclusion</h3><div>The findings of this study indicate that single-stage scanning yields superior accuracy, whereas the incorporation of poorly designed or improperly positioned reference markers may inadvertently compromise scan precision.</div></div>","PeriodicalId":15583,"journal":{"name":"Journal of Dental Sciences","volume":"20 4","pages":"Pages 2189-2194"},"PeriodicalIF":3.1,"publicationDate":"2025-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145020787","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Anemia, hematinic deficiencies, hyperhomocysteinemia, and serum gastric parietal cell antibody positivity in oral lichen planus patients with macrocytosis 伴有巨噬细胞增多的口腔扁平苔藓患者的贫血、血凝素缺乏、高同型半胱氨酸血症和血清胃壁细胞抗体阳性

IF 3.1 3区医学

Journal of Dental Sciences Pub Date : 2025-07-10 DOI: 10.1016/j.jds.2025.06.023

Julia Yu-Fong Chang , Yu-Hsueh Wu , Yi-Pang Lee , Yi-Ping Wang , Andy Sun , Chun-Pin Chiang

{"title":"Anemia, hematinic deficiencies, hyperhomocysteinemia, and serum gastric parietal cell antibody positivity in oral lichen planus patients with macrocytosis","authors":"Julia Yu-Fong Chang , Yu-Hsueh Wu , Yi-Pang Lee , Yi-Ping Wang , Andy Sun , Chun-Pin Chiang","doi":"10.1016/j.jds.2025.06.023","DOIUrl":"10.1016/j.jds.2025.06.023","url":null,"abstract":"<div><h3>Background/purpose</h3><div>Macrocytosis is defined as having the mean corpuscular volume (MCV) ≥ 100 fL. This study evaluated whether 36 oral lichen planus (OLP) patients with macrocytosis (macrocytosis/OLP patients) had significantly higher frequencies of anemia, hematinic deficiencies, hyperhomocysteinemia, and serum gastric parietal cell antibody (GPCA) positivity than 588 healthy control subjects or 588 OLP patients.</div></div><div><h3>Materials and methods</h3><div>Complete blood count, serum iron, vitamin B12, folic acid, homocysteine, and GPCA levels in 36 macrocytosis/OLP patients, 588 OLP patients, and 588 healthy control subjects were measured and compared.</div></div><div><h3>Results</h3><div>We found that 66.7 %, 8.3 %, 91.7 %, 0.0 %, 94.4 %, and 80.6 % of 36 macrocytosis/OLP patients were diagnosed as having blood hemoglobin and serum iron, vitamin B12, and folic acid deficiencies, hyperhomocysteinemia, and serum GPCA positivity, respectively. Moreover, 36 macrocytosis/OLP patients had significantly higher frequencies of blood hemoglobin and serum vitamin B12 deficiencies, hyperhomocysteinemia, and serum GPCA positivity than 588 healthy control subjects or 588 OLP patients (all <em>P</em>-values <0.001). In addition, 36 macrocytosis/OLP patients also had a significantly higher frequency of serum iron deficiency than 588 healthy control subjects (<em>P</em> < 0.001). Pernicious anemia was found in 17 macrocytosis/OLP patients.</div></div><div><h3>Conclusion</h3><div>There are significantly higher frequencies of anemia and serum iron and vitamin B12 deficiencies, hyperhomocysteinemia, and serum GPCA positivity in 36 macrocytosis/OLP patients than in 588 healthy control subjects. Moreover, 36 macrocytosis/OLP patients also have significantly higher frequencies of anemia, serum vitamin B12 deficiency, hyperhomocysteinemia, and serum GPCA positivity than 588 OLP patients.</div></div>","PeriodicalId":15583,"journal":{"name":"Journal of Dental Sciences","volume":"20 4","pages":"Pages 2204-2210"},"PeriodicalIF":3.1,"publicationDate":"2025-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145020789","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Impact of orthodontic education on the perception of attractiveness and acceptance of facial profiles in adult Taiwanese and Caucasian women 正畸教育对台湾及白种人成年女性对面部轮廓的吸引力及接受度之影响

IF 3.1 3区医学

Journal of Dental Sciences Pub Date : 2025-07-10 DOI: 10.1016/j.jds.2025.06.021

Yu-Chuan Tseng , Shih-Chieh Chen , Szu-Ting Chou , Shih-Hsuan Lin , Chao-Yu Lu , Wan-Yi Zhao , Chun-Ming Chen

{"title":"Impact of orthodontic education on the perception of attractiveness and acceptance of facial profiles in adult Taiwanese and Caucasian women","authors":"Yu-Chuan Tseng , Shih-Chieh Chen , Szu-Ting Chou , Shih-Hsuan Lin , Chao-Yu Lu , Wan-Yi Zhao , Chun-Ming Chen","doi":"10.1016/j.jds.2025.06.021","DOIUrl":"10.1016/j.jds.2025.06.021","url":null,"abstract":"<div><h3>Background/purpose</h3><div>The labiomental angle is a critical indicator of lower facial harmony and esthetics. This study investigated the impact of labiomental angle variations on facial attractiveness and examined how orthodontic education influenced aesthetic perception among dental students. Specifically, it evaluated the perceived attractiveness and acceptance of varying labiomental angles in Taiwanese and Caucasian women, aiming to explore potential cultural and educational effects on esthetic preferences.</div></div><div><h3>Materials and methods</h3><div>Three-dimensional facial scans of one Taiwanese and one Caucasian adult female were digitally modified to generate eight labiomental angle variations (117°–152°, at 5° intervals). Each variation included five images and one video, resulting in 16 sets. Eighty-eight dental students assessed these images before and after attending orthodontic lectures. Attractiveness was evaluated using a Visual Analog Scale (VAS), while acceptance was rated on a 3-point Likert scale. The null hypothesis proposed no significant difference in students’ perception of attractiveness and acceptance between the two ethnic profiles.</div></div><div><h3>Results</h3><div>Before the lectures, the most attractive labiomental angle for the Taiwanese female was 137°, shifting to 147° after the lectures. For the Caucasian female, 117° remained the most attractive before and after the lectures. In terms of acceptance, the most preferred angles were 137° for the Taiwanese and 117° for the Caucasian profile. These differences were statistically significant, leading to rejection of the null hypothesis.</div></div><div><h3>Conclusion</h3><div>Cultural background, ethnicity, and orthodontic education significantly influenced students' perceptions of labiomental esthetics, emphasizing the value of education in shaping aesthetic standards.</div></div>","PeriodicalId":15583,"journal":{"name":"Journal of Dental Sciences","volume":"20 4","pages":"Pages 2195-2203"},"PeriodicalIF":3.1,"publicationDate":"2025-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145020788","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The tongue piercing fashion and its related health costs: A perspective of clinical dentistry in Taiwan 舌环时尚及其相关健康成本：台湾临床牙科的视角

IF 3.1 3区医学

Journal of Dental Sciences Pub Date : 2025-07-08 DOI: 10.1016/j.jds.2025.06.020

Feng-Chou Cheng , Ling-Hsia Wang , Julia Yu-Fong Chang, Chun-Pin Chiang

引用次数: 0

Innovative 3D-printed dental teaching model for root canal treatment simulation 创新3d打印牙科学教学模型，模拟根管治疗

IF 3.1 3区医学

Journal of Dental Sciences Pub Date : 2025-07-03 DOI: 10.1016/j.jds.2025.06.017

Szu-Yu Chen , Yu-Chiao Wu , Jia-Rong Wu , Che-Yi Lin , Yi-Jen Hung , Tsai-Wang Huang , Yi-Shing Shieh

{"title":"Innovative 3D-printed dental teaching model for root canal treatment simulation","authors":"Szu-Yu Chen , Yu-Chiao Wu , Jia-Rong Wu , Che-Yi Lin , Yi-Jen Hung , Tsai-Wang Huang , Yi-Shing Shieh","doi":"10.1016/j.jds.2025.06.017","DOIUrl":"10.1016/j.jds.2025.06.017","url":null,"abstract":"<div><h3>Background/purpose</h3><div>Effective endodontic education requires realistic models for simulating clinical procedures, particularly working length (WL) determination using electronic apex locators (EALs). Traditional training methods using extracted or plastic teeth lack standardization, realism, and compatibility with EALs. This study aimed to develop and evaluate a 3D-printed tooth model with conductive properties that allows realistic and standardized training in EAL-based WL determination.</div></div><div><h3>Materials and methods</h3><div>Custom 3D-printed teeth with two distinct working lengths (20.0 mm and 21.9 mm) were designed using cone-beam computed tomography (CBCT) and 3D scanning. Each tooth was embedded in two types of conductive media—tap water and saline. Thirty-six participants (students, trainees, and instructors) performed WL measurements using the Root ZX mini EAL. Accuracy was defined as measurements within ±0.5 mm of the true WL.</div></div><div><h3>Results</h3><div>The model demonstrated high reproducibility across user groups and media. Instructors achieved perfect accuracy (100 %), trainees ranged from 87.5 % to 100 %, and students demonstrated acceptable but more variable accuracy (86.7 %). No significant differences in measurement outcomes were observed between the two media (<em>P</em> > 0.05). Significant differences in accuracy were found among the three groups (<em>P</em> < 0.05), indicating the model's discriminative ability in assessing experience levels.</div></div><div><h3>Conclusion</h3><div>This novel 3D-printed model simulates realistic root canal anatomy and conductive conditions for effective EAL training. It distinguishes varying proficiency levels and provides a reproducible, standardized platform for preclinical education. The model bridges the gap between theoretical learning and clinical practice, making it a valuable tool for contemporary endodontic training.</div></div>","PeriodicalId":15583,"journal":{"name":"Journal of Dental Sciences","volume":"20 4","pages":"Pages 2211-2218"},"PeriodicalIF":3.1,"publicationDate":"2025-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145020727","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Efficacy of clear retainers on intrusion of mandibular molar without skeletal anchorage. 透明固位器对下颌磨牙无骨支抗侵入的疗效观察。

IF 3.4 3区医学

Journal of Dental Sciences Pub Date : 2025-07-01 Epub Date: 2025-05-27 DOI: 10.1016/j.jds.2025.05.008

Yu-Hsiang Lin, Min-Shi Tsai, Chih-Yuan Fang, Sheng-Yang Lee

引用次数: 0

Regulations on the dental profession of the physicians during the Japanese colonial period in Taiwan. 日治时期台湾医师牙科职业规范。

IF 3.4 3区医学

Journal of Dental Sciences Pub Date : 2025-07-01 Epub Date: 2025-03-03 DOI: 10.1016/j.jds.2025.02.018

Feng-Chou Cheng, Ling-Hsia Wang, Chun-Pin Chiang

引用次数: 0

Distribution of the dental education institutions in China before 1949. 1949年前中国牙科教育机构分布。

IF 3.4 3区医学

Journal of Dental Sciences Pub Date : 2025-07-01 Epub Date: 2025-03-01 DOI: 10.1016/j.jds.2025.02.016

Feng-Chou Cheng, Ling-Hsia Wang, Po-Fang Tsai, Chun-Pin Chiang

引用次数: 0

Digital workflow for full-arch immediate loading: Dynamic navigation and 3D printing fixed dental prostheses 全牙弓即时加载的数字化工作流程：动态导航和3D打印固定牙体

IF 3.1 3区医学

Journal of Dental Sciences Pub Date : 2025-06-28 DOI: 10.1016/j.jds.2025.06.016

Cheng-Chung Lin , Han-Wei Lin , Yu-Chieh Lin, Wei-Chun Lin

引用次数: 0

Effects of varying anteroposterior craniodentofacial morphologies on three-dimensional smile variables 不同颅牙面前后形态对三维微笑变量的影响

IF 3.1 3区医学

Journal of Dental Sciences Pub Date : 2025-06-28 DOI: 10.1016/j.jds.2025.06.009

Patcharamas Banditsaowapak , Johnson Hsin-Chung Cheng

{"title":"Effects of varying anteroposterior craniodentofacial morphologies on three-dimensional smile variables","authors":"Patcharamas Banditsaowapak , Johnson Hsin-Chung Cheng","doi":"10.1016/j.jds.2025.06.009","DOIUrl":"10.1016/j.jds.2025.06.009","url":null,"abstract":"<div><h3>Background/purpose</h3><div>Research regarding clinical facial assessment has increasingly shifted toward three-dimensional (3D) methods. This cross-sectional study examined the associations between 3D smile variables and two anteroposterior craniodentofacial morphologies (overjet [OJ] and point-A-nasion-point-B angle [ANB]) and quantified facial soft tissue displacement during the transition from rest to posed smiles.</div></div><div><h3>Materials and methods</h3><div>This study included 119 participants aged 18–30 years. They were divided into three OJ groups (0–4 mm, >4 mm, and <0 mm) and three ANB groups (0°–4°, >4°, and <0°). 3D facial images were taken at rest and during smiling. Subsequently, landmark positions were analyzed. Linear, angular, and proportional measurements were obtained, and landmark displacements were measured.</div></div><div><h3>Results</h3><div>Of the 257 3D soft tissue variables considered, 41 differed significantly among the 3 OJ groups, and 46 differed significantly among the 3 ANB groups during smiling. The intercommissural width measured during smiling in ANB group 1 was more significant than that in the other two groups. Labiomental angles were larger in ANB group 3 at rest and during smiling, whereas the angle at rest was smaller in OJ group 2. Lower lip movements in OJ group 3 and ANB group 3 were more restricted than those in groups 1 and 2.</div></div><div><h3>Conclusion</h3><div>OJ and ANB primarily affect soft tissue landmarks during smiling. A large OJ may lead to a deep labiomental sulcus, whereas a negative ANB may result in a flattened sulcus. Reverse OJ and Class III skeletal malocclusion affect the lower lip by restricting its movement.</div></div>","PeriodicalId":15583,"journal":{"name":"Journal of Dental Sciences","volume":"20 4","pages":"Pages 2219-2230"},"PeriodicalIF":3.1,"publicationDate":"2025-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145020728","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0