Journal of Dental Sciences最新文献_第10页

Critical factors to ensure stable occlusion in Class III patients following surgical-orthodontic treatment 外科正畸治疗后III类患者牙合稳定的关键因素

IF 3.1 3区医学 Q1 DENTISTRY, ORAL SURGERY & MEDICINE

Journal of Dental Sciences

Pub Date : 2026-01-01 DOI: 10.1016/j.jds.2025.09.003

Hung-Ying Lin , Sung-Pu Yang , Zwei-Chieng Chang , Chung-Chen Yao , Sang-Heng Kok , Yi-Jane Chen

Background/purpose

Achieving coordination between maxillary and mandibular arches is critical for establishing stable occlusion. This study evaluated posterior occlusal intercupation and identified predictive factors for normal posterior buccal overjet in skeletal Class III patients following surgical-orthodontic treatment.

Materials and methods

A retrospective analysis was conducted on 51 Class III patients (24 males, 27 females) who underwent bimaxillary surgery and orthodontic treatment. Cone-beam computed tomography (CBCT) scans were obtained at three time points: pre-treatment (T0), pre-surgery (T1), and post-treatment (T2). Maxillary transverse discrepancies and buccolingual inclinations of maxillary and mandibular molars were assessed using Amira® 3D Pro software. Patients were categorized according to posterior buccal overjet at T2 into two groups: Group 1 (normal occlusion) and Group 2 (defective occlusion). Intergroup comparisons and logistic regression were conducted to determine predictive factors.

Results

At T0, Group 2 exhibited significantly narrower maxillary arch widths, more maxillary crowding, greater facial divergence, more pronounced maxillary transverse discrepancy (MTD), and increased molar inclinations on the menton non-deviation side compared to Group 1. At T1, molar inclinations were similar between the two groups. At T2, Group 2 continued to exhibit greater facial divergence, a narrower maxillary arch width, and residual MTD. Logistic regression identified the Wits appraisal at T0 and MTD at T1 as significant predictors of post-treatment occlusion.

Conclusion

A logistic regression model incorporating the pre-treatment Wits appraisal and pre-surgical MTD could predict posterior occlusal outcomes after surgical-orthodontic treatment in Class III patients.

背景/目的实现上颌和下颌弓之间的协调是建立稳定咬合的关键。本研究评估了手术-正畸治疗后骨骼III类患者的后牙合嵌塞，并确定了正常后颊覆盖的预测因素。材料与方法回顾性分析51例III类患者（男24例，女27例）行双颌手术及正畸治疗的临床资料。锥形束计算机断层扫描（CBCT）在治疗前（T0）、术前（T1）和治疗后（T2）三个时间点进行扫描。采用Amira®3D Pro软件评估上颌磨牙横向差异和颊舌倾斜度。根据T2后颊覆盖情况将患者分为正常咬合组1和缺陷咬合组2。通过组间比较和逻辑回归来确定预测因素。结果与1组比较，2组上颌弓宽度明显变窄，上颌拥挤程度明显增加，面部散度明显增加，上颌横向差（MTD）明显增加，磨牙无偏侧倾斜度增加。T1时，两组磨牙倾斜度相近。T2时，第2组继续表现出更大的面部散度，更窄的上颌弓宽度和残留的MTD。Logistic回归发现T0时的Wits评估和T1时的MTD是治疗后闭塞的重要预测因子。结论术前Wits评价与术前MTD相结合的logistic回归模型可以预测III类患者手术正畸治疗后的后牙合结局。

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引用次数: 0

Anemia, hematinic deficiencies, and hyperhomocysteinemia in younger and older oral lichen planus patients 贫血，血液学缺陷和高同型半胱氨酸血症在年轻和老年口腔扁平苔藓患者

IF 3.1 3区医学 Q1 DENTISTRY, ORAL SURGERY & MEDICINE

Journal of Dental Sciences

Pub Date : 2026-01-01 DOI: 10.1016/j.jds.2025.09.017

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

Background/purpose

Our previous study found that 25.2 %, 16.8 %, 10.2 %, 1.2 %, and 21.1 % of 588 oral lichen planus (OLP) patients have anemia, serum iron, vitamin B12, and folic acid deficiencies, and hyperhomocysteinemia, respectively. This study mainly assessed the anemia, hematinic deficiencies, and hyperhomocysteinemia in 190 younger (≤50 years old) and 398 older (>50 years old) OLP patients.

Materials and methods

The blood hemoglobin (Hb) and serum iron, vitamin B12, folic acid, and homocysteine levels in 190 younger and 398 older OLP patients were measured and compared with the corresponding levels in 190 younger (≤50 years old) and 398 older (>50 years old) healthy control subjects (HCSs), respectively.

Results

We discovered that 190 younger OLP patients had significantly lower mean blood Hb and serum iron, vitamin B12, and folic acid levels than 190 younger HCSs. Moreover, 398 older OLP patients had significantly lower mean blood Hb, and serum iron, vitamin B12, and folic acid levels and significantly higher mean serum homocysteine level than 398 older HCSs. In addition, 190 younger OLP patients had significantly lower mean serum vitamin B12, folic acid, and homocysteine levels, and a significantly higher frequency of iron deficiency and significantly lower frequencies of vitamin B12 deficiency and hyperhomocysteinemia than 398 older OLP patients.

Conclusion

The younger OLP patients do have significantly lower mean serum vitamin B12 and folic acid levels, and a significantly higher frequency of serum iron deficiency but a significantly lower frequency of serum vitamin B12 deficiency than the older OLP patients.

背景/目的我们之前的研究发现588例口腔扁平苔藓（OLP）患者中分别有25.2%、16.8%、10.2%、1.2%和21.1%存在贫血、血清铁、维生素B12和叶酸缺乏以及高同型半胱氨酸血症。本研究主要评估了190例年轻（≤50岁）和398例老年（≤50岁）OLP患者的贫血、血凝缺乏症和高同型半胱氨酸血症。材料与方法测定190例年轻OLP患者和398例老年OLP患者的血红蛋白（Hb）和血清铁、维生素B12、叶酸、同型半胱氨酸水平，并分别与190例年轻（≤50岁）和398例老年（≤50岁）健康对照（hcs）进行比较。结果我们发现190例年轻OLP患者的平均血Hb和血清铁、维生素B12和叶酸水平明显低于190例年轻hcs。此外，398例老年OLP患者的平均血Hb、血清铁、维生素B12和叶酸水平显著低于398例老年hcs，平均血清同型半胱氨酸水平显著高于398例老年hcs。此外，190名年轻OLP患者的平均血清维生素B12、叶酸和同型半胱氨酸水平显著低于398名老年OLP患者，缺铁频率显著高于老年OLP患者，维生素B12缺乏和高同型半胱氨酸血症频率显著低于老年OLP患者。结论年轻OLP患者血清维生素B12和叶酸水平明显低于老年OLP患者，血清铁缺乏频率明显高于老年OLP患者，维生素B12缺乏频率明显低于老年OLP患者。

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引用次数: 0

Comparison of image quality, color accuracy, and resolution in intraoral photography using digital single lens reflex camera and smartphone cameras: A pilot study 使用数码单反相机和智能手机相机进行口腔内摄影的图像质量、色彩准确性和分辨率的比较：一项试点研究

IF 3.1 3区医学 Q1 DENTISTRY, ORAL SURGERY & MEDICINE

Journal of Dental Sciences

Pub Date : 2026-01-01 DOI: 10.1016/j.jds.2025.09.015

Saif Momin , Hasan Sarfaraz , Karthik Sengottuvel , Rajesh Shetty , Sazia Amreen , Mallika Shetty

Background/purpose

Dental photography plays a key role in diagnosis, documentation, and communication in the field of dentistry. The digital single-lens reflex (DSLR) cameras are the gold standard for image quality, but advances in modern smartphone technology necessitate evaluating their performance in resolution, distortion, magnification, color accuracy, and overall image quality. The purpose of this study was to compare DSLR cameras and smartphone cameras regarding resolution, distortion, magnification, color accuracy, and overall image quality in intra- and extraoral dental photography.

Materials and methods

A Nikon Z5 full-frame DSLR with a 105 mm macro lens and twin flash (control) was compared with three flagship smartphones: iPhone 15 Pro, Google Pixel 8, and Samsung S24. Ten participants were photographed in five standardized dental views: maximum intercuspation, right lateral occlusion, maxillary anterior with black contrastor, mandibular arch (mirror view), and front profile. Images were analyzed using the GNU Image Manipulation Program (GIMP 2.1); statistical analysis was performed with Statistical Package for the Social Sciences (SPSS) 27.

Results

The Samsung S24 closely matched the DSLR in shade accuracy and distortion. Google Pixel 8 produced an acceptable resolution (<300 dots per inch). The iPhone 15 Pro demonstrated superior performance in reducing distortion and maintaining clarity (P < 0.05).

Conclusion

Despite the convenience and affordability of smartphone cameras, DSLR systems demonstrate superior performance in terms of magnification, image resolution, and color accuracy. These advantages render DSLRs more suitable for clinical applications that demand high precision and diagnostic reliability in dental photography.

背景/目的牙科摄影在牙科领域的诊断、记录和交流中起着关键作用。数码单反（DSLR）相机是图像质量的黄金标准，但现代智能手机技术的进步需要评估它们在分辨率、失真、放大倍率、色彩精度和整体图像质量方面的表现。本研究的目的是比较数码单反相机和智能手机相机在口腔内和口腔外摄影的分辨率、失真、放大倍数、色彩精度和整体图像质量。材料和方法采用尼康Z5全画幅单反相机105mm微距镜头和双闪光灯（控制）与三款旗舰智能手机：iPhone 15 Pro、谷歌Pixel 8和三星S24进行比较。10名参与者在5个标准化的牙齿视图中拍照：最大间隔，右侧咬合，上颌前牙黑色对比，下颌弓（镜视图）和前轮廓。使用GNU图像处理程序（GIMP 2.1）对图像进行分析；采用SPSS (statistical Package for Social Sciences) 27进行统计分析。结果三星S24在阴影精度和失真方面与单反非常接近。像素8产生了一个可接受的分辨率（每英寸300点）。iPhone 15 Pro在减少失真和保持清晰度方面表现出色（P < 0.05）。尽管智能手机相机方便、价格实惠，但数码单反系统在放大倍率、图像分辨率和色彩精度方面表现优异。这些优点使得dslr更适合临床应用，需要高精度和诊断可靠性的牙科摄影。

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引用次数: 0

A cone-beam computed tomography-based morphometric comparison of mandibular molars between Han Chinese and Malays 汉人与马来人下颌磨牙的锥束计算机层析成像形态学比较

IF 3.1 3区医学 Q1 DENTISTRY, ORAL SURGERY & MEDICINE

Journal of Dental Sciences

Pub Date : 2026-01-01 DOI: 10.1016/j.jds.2025.08.026

Jacob John , Wei Cheong Ngeow , Ting-Chun Shen , Lih-Jyh Fuh , Phrabhakaran Nambiar , Yen-Wen Shen , Jui-Ting Hsu

Background/purpose

Variations in tooth and mandibular morphometry exist among ethnic groups and may have clinical and anthropological implications. This study compared the tooth length and root-to-crown ratio (RCR) of mandibular first (M1) and second (M2) molars in Han Chinese and Malays, and assessed the root length relative to mandibular height (Root-Mandible Ratio @ R: Mand).

Materials and methods

One hundred twenty-one cone-beam computed tomography (CBCT) images were included. Relevant measurements were made using the CBCT software to obtain anatomical and clinical crown and root lengths. The measurements of the mesial and distal roots were averaged and used to calculate the RCR and R: Mand. Sixty-one CBCT scans of Malay patients were retrieved, and another 60 scans were of Han Chinese ethnicity.

Results

There was a statistical difference in the tooth morphometry and their RCRs, with the Malays’ findings being significantly higher than the Han Chinese; the exception being the clinical-RCR (c-RCR) of M2 and the R: Mand at M2. Most parameters were generally significantly larger at M1 than at M2. The mandible height at M1 was similar in both ethnic groups, but the R: Mand of M2 was significantly higher (50.69 %) in the Han Chinese because of their low mandibular height. The Han Chinese have shorter crowns and roots for M1 and M2, and mandible height compared to the Malays at M2.

Conclusion

The observed morphometric differences may reflect underlying genetic and/or environmental factors and possible clinical impacts on facial morphology and occlusion between the two ethnic groups.

背景/目的不同种族之间存在牙齿和下颌形态的差异，可能具有临床和人类学意义。本研究比较了汉族和马来人下颌第一磨牙（M1）和第二磨牙（M2）的牙齿长度和根冠比（RCR），并评估了相对于下颌高度的根长（root- mandible ratio @ R: Mand）。材料与方法纳入121张锥形束计算机断层扫描（CBCT）图像。使用CBCT软件进行相关测量，以获得解剖和临床冠和根长度。取近根和远根测量值的平均值，并用于计算RCR和R: Mand。检索了61例马来患者的CBCT扫描，另外60例汉族患者的CBCT扫描。结果马来人的牙齿形态及rcr差异有统计学意义，马来人显著高于汉族；唯一的例外是M2的临床rcr （c-RCR）和M2的R: Mand。大多数参数在M1处明显大于M2处。两民族在M1处的下颌骨高度相似，但汉族由于下颌高度较低，M2处的R: Mand明显高于汉族（50.69%）。汉人M1和M2的冠和根比马来人短，M2的下颌骨高度比马来人短。结论观察到的形态学差异可能反映了潜在的遗传和/或环境因素以及两民族面部形态和咬合的临床影响。

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引用次数: 0

Evaluation of the performance of an artificial intelligence model in recognizing the habitual mixed language in Taiwan for generating periodontal charting text reports 人工智能模型在台湾识别习惯混合语言以生成牙周图表文本报告的性能评估

IF 3.1 3区医学 Q1 DENTISTRY, ORAL SURGERY & MEDICINE

Journal of Dental Sciences

Pub Date : 2026-01-01 DOI: 10.1016/j.jds.2025.10.034

Yi-June Lo , Yung-Chun Chang , Chien-Hung Chen , Hsuan-Po Wang , Hao-Chen Wang , Yoichi Ohiro , Chih-Yuan Fang

Background/purpose

“Periodontal charting” in Taiwan typically involves a two-person collaboration. However, while advances in voice technology has made it feasible to use voice recognition to reduce these manpower demands in English-speaking countries, these artificial intelligent (AI) voice recognition tools have lacked localized features to make them feasible in our context of Taiwan.

Materials and methods

To fill this research gap, we integrated GPT-4o-transcribe and GPT-4.1-mini into a two-stage system for this study, where stage 1 worked on speech-to-text and stage 2 focused on text-to-report. To evaluate this AI model's performance, five representative periodontal charting scenarios were constructed, and 15 voice recordings were collected. The evaluation focused on transcription accuracy and examined factors influencing recognition quality.

Results

The system achieved an overall accuracy of 67.40 % in extracting and formatting data fields related to tooth identification, clinical parameters, and periodontal findings. Furcation involvement, mobility assessment, and missing tooth identification exceeded 90 % accuracy, while bleeding on probing reached 85.76 %. The plaque index and keratinized gingiva width had intermediate accuracies of 68.47 % and 70.83 %, respectively. Probing depth and gingival recession were lower at 53.33 % and 52.01 %. The main factors affecting accuracy included unstable speech speed, prolonged pronunciation leading to repeated numbers, and single positional errors causing chain errors.

Conclusion

Our AI model showed strong speech recognition abilities without requiring extensive training in professional knowledge. It effectively identified dental terms and their related examinations and numbers in mixed language contexts. Future optimizations will focus on addressing errors from uneven speech speed and individual examiner habits.

背景/目的台湾的牙周病诊断通常需要两人合作。为了填补这一研究空白，我们将gpt - 40 -转录和GPT-4.1-mini整合为一个两阶段的研究系统，其中第一阶段研究语音到文本，第二阶段研究文本到报告。为了评估该AI模型的性能，我们构建了5个具有代表性的牙周图表场景，并收集了15段录音。评估的重点是转录准确性和影响识别质量的因素。结果该系统在牙齿识别、临床参数和牙周表现相关数据字段的提取和格式化方面的总体准确率为67.40%。分岔受累、活动能力评估、缺牙鉴定准确率超过90%，而探诊出血准确率达到85.76%。牙菌斑指数和角化牙龈宽度的中间准确度分别为68.47%和70.83%。检探深度和牙龈退缩分别为53.33%和52.01%。影响准确性的主要因素包括语速不稳定、发音时间过长导致数字重复、单一位置错误导致连锁错误等。结论我们的人工智能模型具有较强的语音识别能力，无需大量的专业知识训练。它有效地识别了混合语言环境中的牙科术语及其相关的检查和数字。未来的优化将集中在解决不均匀的语速和个人考官的习惯错误。

{"title":"Evaluation of the performance of an artificial intelligence model in recognizing the habitual mixed language in Taiwan for generating periodontal charting text reports","authors":"Yi-June Lo , Yung-Chun Chang , Chien-Hung Chen , Hsuan-Po Wang , Hao-Chen Wang , Yoichi Ohiro , Chih-Yuan Fang","doi":"10.1016/j.jds.2025.10.034","DOIUrl":"10.1016/j.jds.2025.10.034","url":null,"abstract":"<div><h3>Background/purpose</h3><div>“Periodontal charting” in Taiwan typically involves a two-person collaboration. However, while advances in voice technology has made it feasible to use voice recognition to reduce these manpower demands in English-speaking countries, these artificial intelligent (AI) voice recognition tools have lacked localized features to make them feasible in our context of Taiwan.</div></div><div><h3>Materials and methods</h3><div>To fill this research gap, we integrated GPT-4o-transcribe and GPT-4.1-mini into a two-stage system for this study, where stage 1 worked on speech-to-text and stage 2 focused on text-to-report. To evaluate this AI model's performance, five representative periodontal charting scenarios were constructed, and 15 voice recordings were collected. The evaluation focused on transcription accuracy and examined factors influencing recognition quality.</div></div><div><h3>Results</h3><div>The system achieved an overall accuracy of 67.40 % in extracting and formatting data fields related to tooth identification, clinical parameters, and periodontal findings. Furcation involvement, mobility assessment, and missing tooth identification exceeded 90 % accuracy, while bleeding on probing reached 85.76 %. The plaque index and keratinized gingiva width had intermediate accuracies of 68.47 % and 70.83 %, respectively. Probing depth and gingival recession were lower at 53.33 % and 52.01 %. The main factors affecting accuracy included unstable speech speed, prolonged pronunciation leading to repeated numbers, and single positional errors causing chain errors.</div></div><div><h3>Conclusion</h3><div>Our AI model showed strong speech recognition abilities without requiring extensive training in professional knowledge. It effectively identified dental terms and their related examinations and numbers in mixed language contexts. Future optimizations will focus on addressing errors from uneven speech speed and individual examiner habits.</div></div>","PeriodicalId":15583,"journal":{"name":"Journal of Dental Sciences","volume":"21 1","pages":"Pages 494-500"},"PeriodicalIF":3.1,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145904184","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 bone surface inclination on the precision of static fully guided implant surgery: A quantitative analysis 骨面倾角对静态全引导种植体手术精度影响的定量分析

IF 3.1 3区医学 Q1 DENTISTRY, ORAL SURGERY & MEDICINE

Journal of Dental Sciences

Pub Date : 2026-01-01 DOI: 10.1016/j.jds.2025.10.041

Shiu-Fong Ou , Szu-Yu Huang , Chia-Yuan Hu , Tsung-Chieh Yang , Tong-Mei Wang

Background/purpose

Although static fully guided systems improve the accuracy of implant placement, most studies have focused on flat bone surfaces, with limited exploration of the effects of sloped bone surface. In this study, we aimed to evaluate the effects of bone surface inclination on the accuracy of static fully guided implant surgery.

Materials and methods

Three 3D-printed maxillary models with a missing upper right lateral incisor were fabricated and each accommodated artificial bone blocks (Sawbones®). Bone blocks were grouped according to the buccal surface inclination (0°, 30°, and 60°; n = 10 per group). A static fully guided surgical system was designed using cone beam computed tomography and model scan data, and implants (Nobel Parallel Conical Connection RP, 4.3 mm × 13 mm) were placed by a single operator. The post-placement accuracy was assessed by mapping the scanned implant data with the surgical plan in Geomagic Control X. Deviations in the entry point, apex, vertical and horizontal positions, as well as angular deviation, were measured. Statistical analysis was performed using one-way ANOVA with Bonferroni post hoc test (P < 0.05).

Results

Significant differences were observed in the entry point, apex, angular, and vertical deviations across the inclination groups; however, no significant difference was found in the horizontal deviations. Of the 30 implants, 23 deviated toward the buccal side.

Conclusion

Bone surface inclination significantly affects the accuracy of static, fully guided implant surgery. Preoperative planning and guide design should consider these effects in order to optimize implant placement outcomes.

背景/目的虽然静态全引导系统提高了种植体放置的准确性，但大多数研究都集中在平骨表面，对倾斜骨表面的影响的探索有限。在本研究中，我们旨在评估骨表面倾角对静态全引导种植体手术精度的影响。材料和方法制作3个缺失右上侧切牙的3d打印上颌模型，每个模型都容纳人工骨块（Sawbones®）。骨块按颊面倾角（0°、30°、60°）分组，每组n = 10。利用锥形束计算机断层扫描和模型扫描数据设计了一个静态全引导手术系统，由一名操作员放置植入物（Nobel Parallel Conical Connection RP, 4.3 mm × 13 mm）。通过将扫描的种植体数据与手术计划在Geomagic Control x中进行映射来评估放置后的精度。测量入口、顶点、垂直和水平位置的偏差以及角偏差。统计学分析采用Bonferroni事后检验的单因素方差分析（P < 0.05）。结果各倾斜组的入点、顶点、角度和垂直偏差均有显著性差异；然而，在水平偏差上没有发现显著差异。在30个种植体中，23个向颊侧倾斜。结论骨面倾角对静态全引导种植体手术精度有显著影响。术前计划和引导设计应考虑这些影响，以优化植入效果。

{"title":"Impact of bone surface inclination on the precision of static fully guided implant surgery: A quantitative analysis","authors":"Shiu-Fong Ou , Szu-Yu Huang , Chia-Yuan Hu , Tsung-Chieh Yang , Tong-Mei Wang","doi":"10.1016/j.jds.2025.10.041","DOIUrl":"10.1016/j.jds.2025.10.041","url":null,"abstract":"<div><h3>Background/purpose</h3><div>Although static fully guided systems improve the accuracy of implant placement, most studies have focused on flat bone surfaces, with limited exploration of the effects of sloped bone surface. In this study, we aimed to evaluate the effects of bone surface inclination on the accuracy of static fully guided implant surgery.</div></div><div><h3>Materials and methods</h3><div>Three 3D-printed maxillary models with a missing upper right lateral incisor were fabricated and each accommodated artificial bone blocks (Sawbones®). Bone blocks were grouped according to the buccal surface inclination (0°, 30°, and 60°; n = 10 per group). A static fully guided surgical system was designed using cone beam computed tomography and model scan data, and implants (Nobel Parallel Conical Connection RP, 4.3 mm × 13 mm) were placed by a single operator. The post-placement accuracy was assessed by mapping the scanned implant data with the surgical plan in Geomagic Control X. Deviations in the entry point, apex, vertical and horizontal positions, as well as angular deviation, were measured. Statistical analysis was performed using one-way ANOVA with Bonferroni post hoc test (<em>P</em> < 0.05).</div></div><div><h3>Results</h3><div>Significant differences were observed in the entry point, apex, angular, and vertical deviations across the inclination groups; however, no significant difference was found in the horizontal deviations. Of the 30 implants, 23 deviated toward the buccal side.</div></div><div><h3>Conclusion</h3><div>Bone surface inclination significantly affects the accuracy of static, fully guided implant surgery. Preoperative planning and guide design should consider these effects in order to optimize implant placement outcomes.</div></div>","PeriodicalId":15583,"journal":{"name":"Journal of Dental Sciences","volume":"21 1","pages":"Pages 524-532"},"PeriodicalIF":3.1,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145904188","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

Characterization of the oral microbiota in zygomatic versus dental implants: Implications for full-mouth rehabilitation 颧骨与牙种植体的口腔微生物群特征：对全口康复的影响

IF 3.1 3区医学 Q1 DENTISTRY, ORAL SURGERY & MEDICINE

Journal of Dental Sciences

Pub Date : 2026-01-01 DOI: 10.1016/j.jds.2025.11.004

Min-Yi Sung , Po-Chih Hsu , Chan-Yen Kuo , Liang-Kun Chen , Chung-Che Tsai , Yi-Chiung Hsu

Background/purpose

Dental implants are widely used to restore oral function and esthetics in patients with tooth loss. General zygomatic implants (GZIs) are a valuable alternative for patients with severely atrophic maxillae or post-oncologic defects. However, implant placement can alter the ecological balance of the oral microbiota, potentially influencing peri-implant and sinus-related diseases. Because GZIs often traverse or adjoin the maxillary sinus, their microbial environment may differ from that of general dental implants (GDIs). This study aimed to compare microbiota taxonomy between GZI and GDI sites.

Materials and methods

Generally healthy adults treated with either general zygomatic implants (GZI group) or general dental implants (GDI group) at a teaching hospital dental clinic were recruited. Biofilm samples were collected from implant surfaces under aseptic conditions. Microbial DNA was extracted and analyzed using 16S rRNA gene amplicon sequencing. Taxonomic classification and diversity analyses were performed through bioinformatic pipelines to identify bacterial genera and compare microbial community composition between groups.

Results

Distinct microbial profiles were observed between the GZI and GDI groups. Rothia, Thermus, and Sphingomonas were significantly more abundant in the GZI group, whereas Capnocytophaga and Leptotrichia predominated in the GDI group, reflecting greater richness in the latter. Notably, Rothia species commonly linked to sinus infections were enriched in the GZI group, suggesting sinus-associated microbiome alterations.

Conclusion

Implant type significantly influences peri-implant microbiota composition. Zygomatic implants exhibit distinct microbial communities potentially associated with sinus involvement. Further studies are needed to clarify their role in peri-implant and sinus-related pathogenesis.

背景/目的牙种植体被广泛用于修复牙齿缺失患者的口腔功能和美观。一般颧骨植入（GZIs）是一个有价值的替代患者严重萎缩的上颌或肿瘤后的缺陷。然而，种植体的放置可以改变口腔微生物群的生态平衡，潜在地影响种植体周围和鼻窦相关疾病。由于gdi经常穿过或毗邻上颌窦，其微生物环境可能与普通种植体（gdi）不同。本研究旨在比较GZI和GDI位点的微生物群分类。材料与方法在某教学医院牙科门诊接受普通颧种植体（GZI组）或普通牙种植体（GDI组）治疗的一般健康成人为研究对象。在无菌条件下从种植体表面收集生物膜样品。提取微生物DNA，采用16S rRNA基因扩增子测序进行分析。通过生物信息学管道进行分类和多样性分析，鉴定细菌属，比较组间微生物群落组成。结果GZI组和GDI组的微生物分布明显不同。GZI组中Rothia、Thermus和Sphingomonas的丰度显著高于GDI组，而GDI组中以Capnocytophaga和Leptotrichia为主，后者的丰度更高。值得注意的是，通常与鼻窦感染相关的罗氏菌在GZI组中富集，表明鼻窦相关的微生物组发生了变化。结论种植体类型显著影响种植体周围菌群组成。颧骨植入物表现出明显的微生物群落，可能与鼻窦受损伤有关。需要进一步的研究来阐明它们在种植体周围和窦相关发病机制中的作用。

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引用次数: 0

Dynamic navigation method for rapid confirmation of multi-unit abutment position and angulation 快速确定多单元基台位置和角度的动态导航方法

IF 3.1 3区医学 Q1 DENTISTRY, ORAL SURGERY & MEDICINE

Journal of Dental Sciences

Pub Date : 2026-01-01 DOI: 10.1016/j.jds.2025.10.017

Han-Wei Lin , Cheng-Chung Lin , Wei-Shao Lin, Wei-Chun Lin

引用次数: 0

Perspectives of the new horizon in bone regeneration with standardized, centrally manufactured freeze-dried platelet-rich plasma 标准化、中央制造的冻干富血小板血浆在骨再生中的新前景

IF 3.1 3区医学 Q1 DENTISTRY, ORAL SURGERY & MEDICINE

Journal of Dental Sciences

Pub Date : 2025-08-16 DOI: 10.1016/j.jds.2025.08.008

Yi-Tzu Chen , Pei-Yin Chen , Yu-Chao Chang