Journal of Dental Sciences最新文献_第9页

Oral health-related quality of life in patients with osteogenesis imperfecta in Taiwan 台湾成骨不全症患者的口腔健康相关生活品质

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.2025.08.032

Kun-Jung Hsu , Han-Sheng Chen , Chun-Ming Chen , Yu-Chuan Tseng , I-Chin Lin

Background/purpose

Osteogenesis imperfecta (OI) is a rare genetic disorder that affects bone and dental structures, often reducing oral health-related quality of life (OHRQoL). Maintaining OHRQoL in individuals with OI depends greatly on their dental conditions. Thus, this study identified key dental factors associated with OHRQoL in this population.

Materials and methods

Thirty-seven patients with OI participated in this cross-sectional study. Data were collected using structured questionnaires on sociodemographic characteristics, oral habits, self-perceived oral health, and OHRQoL. Clinical examinations were performed to evaluate dental status. Associations between dental variables and OHRQoL were analyzed using the Mann–Whitney U test and Kruskal–Wallis test. Multiple logistic regression analysis was used to identify the significant predictors of poor OHRQoL.

Results

Multiple logistic regression analysis revealed that the number of posterior functional tooth units (P-FTUs) was the only significant dental predictor of OHRQoL. A higher P-FTU count was significantly associated with better OHRQoL scores.

Conclusion

An adequate number of P-FTUs is essential for maintaining OHRQoL in patients with OI. In addition to retaining natural teeth or fixed prostheses, ensuring proper distribution and functional occlusion is critical. Clinicians should prioritize treatment strategies that preserve posterior occlusion and provide prosthetic rehabilitation when required to support optimal oral function and quality of life.

背景/目的成骨不全症（osteogenesis imperfecta， OI）是一种罕见的影响骨骼和牙齿结构的遗传性疾病，通常会降低口腔健康相关生活质量（OHRQoL）。成骨不全患者的OHRQoL维持在很大程度上取决于他们的牙齿状况。因此，本研究确定了与该人群OHRQoL相关的关键牙科因素。材料与方法37例成骨不全患者参与了本横断面研究。数据采用结构化问卷收集，包括社会人口学特征、口腔习惯、自我感知口腔健康和OHRQoL。进行临床检查以评估牙齿状况。采用Mann-Whitney U检验和Kruskal-Wallis检验分析牙齿变量与OHRQoL的相关性。采用多元logistic回归分析确定不良OHRQoL的显著预测因素。结果多因素logistic回归分析显示，后功能牙单元（P-FTUs）数量是OHRQoL的唯一显著预测因子。较高的P-FTU计数与较好的OHRQoL评分显著相关。结论足量的p - ftu对维持成骨不全患者的OHRQoL至关重要。除了保留天然牙或固定假体外，确保适当的分布和功能咬合是至关重要的。临床医生应优先考虑保留后牙合的治疗策略，并在需要时提供假肢康复，以支持最佳的口腔功能和生活质量。

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引用次数: 0

Oral health in the children's literacy book “Kuei Pen Tui Hsiang Ssu Yen Tsa Tzu” from the early Ming dynasty 明初儿童识字书《桂盆推香素颜子》中关于口腔健康的内容

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.2025.10.033

Feng-Chou Cheng, Ling-Hsia Wang, Shiang-Yao Liu, Chun-Pin Chiang

引用次数: 0

The exploration of dental careers among high school girls in Taiwan during the Japanese colonial period 日治时期台湾高中女生牙科事业之探索

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.2025.10.014

Feng-Chou Cheng, Ling-Hsia Wang, Shiang-Yao Liu, Chun-Pin Chiang

引用次数: 0

Rapid response model for mandibular fractures by community clinic dentists under the National Health Insurance in Taiwan 全民健保下社区诊所牙医治疗下颌骨骨折的快速反应模型

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.2025.08.034

Feng-Chou Cheng , Ling-Hsia Wang , Hsiao-Yi Chen, Chun-Pin Chiang

引用次数: 0

Open contacts adjacent to posterior dental implants: Current understanding and emerging preventive concepts 与后牙种植体相邻的开放接触：当前的理解和新兴的预防概念

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.2025.08.035

Chiun-Lin Steven Liu , Shih-Cheng Wen , Ching-Jung Chang Chien , Je-Kang Du

Open proximal contacts between posterior dental implant restorations and adjacent natural teeth are a common yet underappreciated complication. This review examines the multifactorial etiology of open contact formation, including biomechanical discrepancies, prosthetic and surgical factors, occlusal force dynamics, and natural tooth migration. The clinical consequences-ranging from food impaction and gingival inflammation to proximal bone loss and diminished patient satisfaction-are also analyzed. These complications not only affected oral hygiene and comfort but might also contribute to peri-implant tissue breakdown and increased maintenance needs. Existing preventive and corrective strategies, such as prosthetic over-contouring, splinted restorations, and occlusal equilibration, are reviewed with attention to their limitations in long-term effectiveness. In response, this article introduces biomechanically informed occlusal adjustment concepts, including the mesial–mesial/distal–distal (MM-DD) technique, as a potential proactive approach. While preliminary clinical observations suggest that the MM-DD technique may help preserve proximal contact integrity and reduce implant-related complications, further prospective validation is required. This review provides a balanced synthesis of current evidence and evolving strategies to enhance the long-term stability of proximal contacts in posterior implant therapy.

后牙种植体修复体与邻近自然牙之间的近端接触是常见但未被重视的并发症。这篇综述探讨了开放接触形成的多因素病因，包括生物力学差异、假体和手术因素、咬合力动力学和自然牙齿迁移。临床结果-从食物嵌塞和牙龈炎症到近端骨质流失和患者满意度降低-也进行了分析。这些并发症不仅影响口腔卫生和舒适，而且可能导致种植体周围组织破坏和维护需求增加。现有的预防和矫正策略，如假体过度轮廓，夹板修复和咬合平衡，回顾了他们的局限性，在长期的有效性。因此，本文介绍了生物力学方面的咬合调整概念，包括中-中/远-远端（MM-DD）技术，作为一种潜在的主动方法。虽然初步的临床观察表明MM-DD技术可能有助于保持近端接触完整性并减少种植体相关并发症，但需要进一步的前瞻性验证。这篇综述提供了一个平衡的综合目前的证据和不断发展的策略，以提高在后路种植体治疗中近端接触的长期稳定性。

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引用次数: 0

Improvement in oral hygiene among bedridden patients following domiciliary dental care: A retrospective study 居家牙科护理对卧床病人口腔卫生的改善：一项回顾性研究

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.2025.10.018

Min Yee Ng , Chuan-Hang Yu

Background/purpose

Domiciliary dental care (DDC) offers dental services in the comfort of a patient's home, typically for bed-bound patients. Poor oral hygiene in this group has been associated with pneumonia. Although DDC reduces the risk of pneumonia, its impact on oral hygiene has not been explored yet. Therefore, this retrospective study aimed to investigate the effectiveness of DDC in improving oral health in bedridden patients.

Materials and methods

We retrospectively reviewed individuals who received dental services and evaluated their oral hygiene status using the plaque index (PI). Demographic data (age, sex, cause of bedridden state) and oral findings (DMFT, number of residual roots, and remaining teeth) were also analyzed.

Results

In this study, a total of 61 patients were evaluated. Their mean PI improved significantly from 2.02 to 1.73 after receiving DDC. When subjects were stratified according to their baseline median PI (2.1), the high baseline PI group exhibited a greater improvement in PI, reaching levels comparable to those of the low baseline group. Multiple regression analysis identified that a higher baseline PI and a younger age (<43 years) predicted a greater improvement in PI, explaining 34.37 % of the variance. Distribution analysis revealed a higher likelihood of lower PI after intervention, with the low-to-high PI ratio improving from 1:1 to 23:4.

Conclusion

Overall, these findings demonstrated that patients significantly improved their PI and oral hygiene after DDC interventions. We anticipate that more dental schools, clinics, and hospitals will soon adopt DDC, increasing accessibility to dental care for bedridden patients.

背景/目的住家牙科护理（DDC）为卧床的患者提供舒适的牙科服务。这一群体的口腔卫生不良与肺炎有关。虽然DDC降低了肺炎的风险，但其对口腔卫生的影响尚未得到探讨。因此，本研究旨在探讨DDC在改善卧床病人口腔健康方面的效果。材料和方法我们回顾性地回顾了接受牙科服务的个体，并使用菌斑指数（PI）评估了他们的口腔卫生状况。人口统计数据（年龄、性别、卧床原因）和口腔检查结果（DMFT、残根数量和剩余牙齿）也进行了分析。结果本研究共对61例患者进行评估。接受DDC治疗后，患者的平均PI由2.02显著提高至1.73。当受试者根据他们的基线PI中位数（2.1）分层时，高基线PI组在PI方面表现出更大的改善，达到与低基线组相当的水平。多元回归分析发现，较高的基线PI和较年轻的年龄（43岁）预示着PI的更大改善，解释了34.37%的方差。分布分析显示，干预后PI降低的可能性更高，低PI与高PI之比从1:1提高到23:4。结论总体而言，这些发现表明患者在DDC干预后PI和口腔卫生得到了显著改善。我们预计更多的牙科学校、诊所和医院将很快采用DDC，增加卧床病人获得牙科护理的机会。

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引用次数: 0

A scientometric study on research trends and characteristics of randomized controlled trials in orthodontics 正畸学随机对照试验研究趋势及特点的科学计量学研究

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.2025.08.022

Ning Wang , Yang Yu , Linjun Shi , Zhechen Zhang , Jianwei Song

Background/purpose

In evidence-based approaches to orthodontic research, randomized controlled trials (RCTs) are recognized as the highest level of original evidence. The purpose of this study was to analyze the scientometric characteristics and research trends of RCTs in orthodontics, with emphasis on chronological comparison and regional characteristic of the keywords.

Materials and methods

All the reports on RCTs in orthodontics were comprehensively retrieved from the Scopus database. The years of publication were divided into before 2020 and Jan 2020–Jul 2025 in the analysis of research trends.

Results

There were 1343 reports on RCTs in orthodontics, with total citations of 27,314 and the h index of 74. The most keyword of condition or related disease was malocclusion, followed by pain, mouth hygiene, tooth disease, dental caries, gingivitis, periodontal disease, and root resorption. The research trend of has changed to accelerated orthodontics, photobiomodulation, platelet-rich fibrin, overbite, oral health, mouthwash, chlorhexidine, fluoride varnish, biofilm, streptococcus mutans, low-level laser therapy, and pain management after 2020. Compared with Western countries, the investigators from the representative developing countries more concerned with accelerated orthodontics, diode laser, low-level laser therapy, micro-osteoperforation, microbiology, streptococcus mutans, open bite, pain management, ibuprofen, fluoride varnish, saliva, biofilm, and white spot lesions.

Conclusion

This scientometric study elucidated the comprehensive schema and research trends in the field of RCTs in orthodontics, and would help in improving in reciprocal collaboration and provide helpful guidance for further research.

背景/目的在以证据为基础的正畸研究方法中，随机对照试验（RCTs）被认为是最高水平的原始证据。本研究的目的是分析正畸学随机对照试验的科学计量学特征和研究趋势，重点分析关键词的时间对比和区域特征。材料与方法综合检索Scopus数据库中有关正畸学的rct报告。在研究趋势分析中，将发表年份分为2020年前和2020年1月- 2025年7月。结果口腔正畸相关随机对照试验报告1343篇，总引用27314次，h指数为74。病情或相关疾病的关键词最多的是错牙合，其次是疼痛、口腔卫生、牙病、龋齿、牙龈炎、牙周病和牙根吸收。2020年后的研究方向将转向加速正畸、光生物调节、富血小板纤维蛋白、复盖、口腔保健、漱口水、氯己定、氟化物清漆、生物膜、变形链球菌、低水平激光治疗、疼痛管理。与西方国家相比，具有代表性的发展中国家的研究人员更关注加速正畸、二极管激光、低水平激光治疗、微创骨手术、微生物学、变形链球菌、开放咬伤、疼痛管理、布洛芬、氟化物清漆、唾液、生物膜和白斑病变。结论本科学计量学研究阐明了正畸学随机对照试验领域的综合模式和研究趋势，有助于促进互惠合作，为进一步的研究提供有益的指导。

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引用次数: 0

Relationship between tooth loss and tongue pressure and the effectiveness of removable denture for older people requiring long-term care 牙齿脱落与舌压的关系及需要长期护理的老年人可摘义齿的效果

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.2025.06.028

Madoka Funahara , Yuki Sakamoto , Haruka Oyama , Sakiko Soutome

Background/purpose

Aspiration pneumonia is a major health concern among older adults, particularly those requiring long-term care. It is often caused by silent aspiration of saliva-containing pathogenic bacteria and exacerbated by impaired oral and swallowing functions. Tongue pressure is a key factor in maintaining these functions, and its decline is associated with increased bacterial amount in the saliva and higher mortality. However, the relationship among tongue pressure, occlusal status, and prosthetic treatment in older individuals requiring care remains unclear. This study aimed to investigate the association between tooth loss and decreased tongue pressure in older individuals requiring long-term care, and to evaluate whether wearing removable dentures can mitigate this decline.

Materials and methods

Fifty-three participants (mean age: 82.1 years) from three nursing facilities in Japan were assessed. The collected data included tongue pressure, number of teeth, functional tooth units (FTU), oral hygiene, tongue coating index, xerostomia, and salivary bacterial count. Bacterial counts were measured using real-time PCR.

Results

Reduced tongue pressure was significantly correlated with increased bacterial counts in the saliva. Multivariate analysis confirmed the significant relationship between decreased nif-FTU levels and reduced tongue pressure. Although not statistically significant, denture use tended to preserve tongue pressure in patients with reduced natural dentition.

Conclusion

Tooth loss may contribute to reduced tongue pressure and increased bacterial amount in the saliva of older adults. Prosthetic treatments, including dentures, may help maintain oral function and reduce the risk of aspiration pneumonia.

背景/目的吸入性肺炎是老年人的主要健康问题，特别是那些需要长期护理的老年人。它通常由含有唾液的致病菌无声吸入引起，并因口腔和吞咽功能受损而加重。舌压是维持这些功能的关键因素，它的下降与唾液中细菌数量的增加和更高的死亡率有关。然而，在需要护理的老年人中，舌压、咬合状态和假体治疗之间的关系尚不清楚。本研究旨在调查需要长期护理的老年人牙齿脱落和舌压下降之间的关系，并评估佩戴活动义齿是否可以缓解这种下降。材料与方法对来自日本三家护理机构的53名参与者（平均年龄：82.1岁）进行评估。收集的数据包括舌压、牙数、功能牙单位（FTU）、口腔卫生、舌苔指数、口干症和唾液细菌计数。采用实时PCR检测细菌计数。结果舌压降低与唾液中细菌数量增加显著相关。多变量分析证实nif-FTU水平降低与舌压降低之间存在显著关系。虽然没有统计学上的显著性，但假牙的使用倾向于保留自然牙列减少的患者的舌压。结论老年人牙齿脱落可能导致舌压降低，唾液细菌数量增加。包括假牙在内的假肢治疗可能有助于维持口腔功能并降低吸入性肺炎的风险。

{"title":"Relationship between tooth loss and tongue pressure and the effectiveness of removable denture for older people requiring long-term care","authors":"Madoka Funahara , Yuki Sakamoto , Haruka Oyama , Sakiko Soutome","doi":"10.1016/j.jds.2025.06.028","DOIUrl":"10.1016/j.jds.2025.06.028","url":null,"abstract":"<div><h3>Background/purpose</h3><div>Aspiration pneumonia is a major health concern among older adults, particularly those requiring long-term care. It is often caused by silent aspiration of saliva-containing pathogenic bacteria and exacerbated by impaired oral and swallowing functions. Tongue pressure is a key factor in maintaining these functions, and its decline is associated with increased bacterial amount in the saliva and higher mortality. However, the relationship among tongue pressure, occlusal status, and prosthetic treatment in older individuals requiring care remains unclear. This study aimed to investigate the association between tooth loss and decreased tongue pressure in older individuals requiring long-term care, and to evaluate whether wearing removable dentures can mitigate this decline.</div></div><div><h3>Materials and methods</h3><div>Fifty-three participants (mean age: 82.1 years) from three nursing facilities in Japan were assessed. The collected data included tongue pressure, number of teeth, functional tooth units (FTU), oral hygiene, tongue coating index, xerostomia, and salivary bacterial count. Bacterial counts were measured using real-time PCR.</div></div><div><h3>Results</h3><div>Reduced tongue pressure was significantly correlated with increased bacterial counts in the saliva. Multivariate analysis confirmed the significant relationship between decreased nif-FTU levels and reduced tongue pressure. Although not statistically significant, denture use tended to preserve tongue pressure in patients with reduced natural dentition.</div></div><div><h3>Conclusion</h3><div>Tooth loss may contribute to reduced tongue pressure and increased bacterial amount in the saliva of older adults. Prosthetic treatments, including dentures, may help maintain oral function and reduce the risk of aspiration pneumonia.</div></div>","PeriodicalId":15583,"journal":{"name":"Journal of Dental Sciences","volume":"21 1","pages":"Pages 103-108"},"PeriodicalIF":3.1,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145903934","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

Simultaneous labial and lingual augmented corticotomy increase periodontal hard and soft tissues in 10 skeletal Class II patients – A preliminary study 同时唇部和舌部强化皮质切开术增加了10例骨骼II类患者的牙周硬软组织-一项初步研究

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.2025.06.019

Xiaochi Chang , Yi Feng , Cheng Lin , Chang Shu , Yichong Sun , Youmin Mei , Jianxia Hou

Background/purpose

During pre-orthognathic orthodontic procedures in skeletal Class II patients, mandibular anterior tooth retraction could cause depletion of periodontal tissues on the labial and lingual sides. This study aimed to assess the changes in alveolar bone thickness, gingival thickness and keratinized gingiva width of the mandibular anterior teeth after labial and lingual augmented corticotomy (LLAC).

Materials and methods

10 patients suffering from skeletal Class II malocclusion undergoing orthodontic-orthognathic combined treatment were included and LLAC was performed on their mandibular anterior teeth at the same time. Cone-beam computed tomography (CBCT) was performed at preoperatively (T0), 14 days postoperatively (Ts), and 6 months postoperatively (T1). Intraoral scanning was used at T0 and T1. The alveolar bone thickness, gingival thickness, keratinized gingiva width, and their changes were measured and analyzed.

Results

At 6 months after LLAC, the mean labial and lingual alveolar bone thicknesses were 0.91 ± 1.19 mm and 1.43 ± 1.52 mm at T0 and 1.96 ± 1.59 mm and 2.24 ± 1.75 mm at T1. The mean increase in thickness of the labial and lingual gingiva was 0.44 ± 0.46 mm and 0.28 ± 0.45 mm. The mean keratinized gingiva width was 3.92 ± 1.55 mm at T0, and the mean width was 4.79 ± 1.38 mm at T1. There was a significant increase in periodontal soft and hard tissues at all measured sites postoperatively.

Conclusion

LLAC procedure improves the periodontal phenotype of skeletal Class II during decompensation. It provides adequate tooth movement distance during preoperative pre-orthognathic orthodontic treatment and ensures that healthy periodontal tissues are obtained during that period.

背景/目的在骨骼ⅱ类患者的正颌前正畸治疗过程中，下颌前牙缩回会导致唇侧和舌侧牙周组织的损耗。本研究旨在探讨唇舌增强皮质切开术（LLAC）后下颌前牙牙槽骨厚度、牙龈厚度和角化牙龈宽度的变化。材料与方法选取10例正颌-正颌联合治疗的骨骼ⅱ类错颌患者，同时对其下颌前牙行LLAC。分别于术前（T0）、术后14天（Ts）和术后6个月（T1）行锥形束计算机断层扫描（CBCT）。在T0和T1时进行口内扫描。测量并分析牙槽骨厚度、牙龈厚度、角化牙龈宽度及其变化。结果LLAC术后6个月，唇部和舌部牙槽骨平均厚度分别为0.91±1.19 mm和1.43±1.52 mm， T1为1.96±1.59 mm和2.24±1.75 mm。唇龈、舌龈厚度平均增加0.44±0.46 mm、0.28±0.45 mm。T0时平均龈角化宽度为3.92±1.55 mm， T1时平均龈角化宽度为4.79±1.38 mm。术后所有测量部位的牙周软硬组织均明显增加。结论llac可改善骨ⅱ类失代偿期的牙周表型。它在术前正颌前正畸治疗期间提供足够的牙齿移动距离，并确保在此期间获得健康的牙周组织。

{"title":"Simultaneous labial and lingual augmented corticotomy increase periodontal hard and soft tissues in 10 skeletal Class II patients – A preliminary study","authors":"Xiaochi Chang , Yi Feng , Cheng Lin , Chang Shu , Yichong Sun , Youmin Mei , Jianxia Hou","doi":"10.1016/j.jds.2025.06.019","DOIUrl":"10.1016/j.jds.2025.06.019","url":null,"abstract":"<div><h3>Background/purpose</h3><div>During pre-orthognathic orthodontic procedures in skeletal Class II patients, mandibular anterior tooth retraction could cause depletion of periodontal tissues on the labial and lingual sides. This study aimed to assess the changes in alveolar bone thickness, gingival thickness and keratinized gingiva width of the mandibular anterior teeth after labial and lingual augmented corticotomy (LLAC).</div></div><div><h3>Materials and methods</h3><div>10 patients suffering from skeletal Class II malocclusion undergoing orthodontic-orthognathic combined treatment were included and LLAC was performed on their mandibular anterior teeth at the same time. Cone-beam computed tomography (CBCT) was performed at preoperatively (T0), 14 days postoperatively (Ts), and 6 months postoperatively (T1). Intraoral scanning was used at T0 and T1. The alveolar bone thickness, gingival thickness, keratinized gingiva width, and their changes were measured and analyzed.</div></div><div><h3>Results</h3><div>At 6 months after LLAC, the mean labial and lingual alveolar bone thicknesses were 0.91 ± 1.19 mm and 1.43 ± 1.52 mm at T0 and 1.96 ± 1.59 mm and 2.24 ± 1.75 mm at T1. The mean increase in thickness of the labial and lingual gingiva was 0.44 ± 0.46 mm and 0.28 ± 0.45 mm. The mean keratinized gingiva width was 3.92 ± 1.55 mm at T0, and the mean width was 4.79 ± 1.38 mm at T1. There was a significant increase in periodontal soft and hard tissues at all measured sites postoperatively.</div></div><div><h3>Conclusion</h3><div>LLAC procedure improves the periodontal phenotype of skeletal Class II during decompensation. It provides adequate tooth movement distance during preoperative pre-orthognathic orthodontic treatment and ensures that healthy periodontal tissues are obtained during that period.</div></div>","PeriodicalId":15583,"journal":{"name":"Journal of Dental Sciences","volume":"21 1","pages":"Pages 167-176"},"PeriodicalIF":3.1,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145904001","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 treatment on masticatory muscle electromyographic patterns in patients with anterior crossbite 正畸治疗对前牙合患者咀嚼肌肌电图的影响

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.2025.09.012

Yi-Mien Cheng , Yueh-Ling Hsieh , Yu-Hsiang Chang , Yuan-Hou Chen , Jian-Hong Yu

Background/purpose

Anterior crossbite affects facial aesthetics and may cause temporomandibular joint disorders and masticatory muscle dysfunction. Prolonged abnormal bite positioning may impact muscle activity and affect treatment stability. Although orthodontic therapy aims to realign teeth and correct bite relationships, the neuromuscular adaptations following treatment remain unclear. This study aims to investigate the changes in masticatory muscle activity before and after orthodontic treatment in patients with anterior crossbite using surface electromyography (sEMG).

Materials and methods

41 participants were recruited and divided into 3 groups: normal occlusion (n = 18), anterior crossbite without treatment (control, n = 6), and anterior crossbite with orthodontic treatment (experimental, n = 13). Muscle activity of the temporalis, masseter, and anterior digastric muscles was recorded across four stages. Measurements included maximum mouth opening, muscle endurance, and sEMG. Data were analyzed using IBM SPSS (IBM Corp., Armonk, NY, USA) with independent t-tests and repeated measures ANOVA.

Results

After orthodontic treatment, the experimental group showed improved mouth opening and biting force. While no significant differences in resting muscle potentials were found between treated patients and the normal group, statistically significant differences were observed between the experimental and control groups in the clenching activity of both left and right temporalis muscles (P < 0.05) throughout all stages of the study (P < 0.05).

Conclusion

Orthodontic treatment improved muscle function in anterior crossbite patients, but muscle activity does not fully normalize. This suggests that post-treatment muscle adaptation may require more time and highlights the importance of monitoring muscle function as part of comprehensive orthodontic care.

背景/目的前牙合影响面部美观，并可能导致颞下颌关节紊乱和咀嚼肌功能障碍。长时间的异常咬合定位可能影响肌肉活动，影响治疗的稳定性。虽然正畸治疗的目的是调整牙齿和正确的咬合关系，但治疗后的神经肌肉适应尚不清楚。本研究旨在利用肌表电图（sEMG）研究正畸治疗前后前牙合患者咀嚼肌活动的变化。材料与方法招募41名受试者，将其分为3组：正常咬合组（n = 18）、未经治疗的前牙合组（n = 6）和接受正畸治疗的前牙合组（n = 13）。颞肌、咬肌和前二腹肌的肌肉活动被记录在四个阶段。测量包括最大张嘴、肌肉耐力和肌电图。数据分析采用IBM SPSS (IBM Corp., Armonk， NY， USA)，采用独立t检验和重复测量方差分析。结果实验组患者在正畸治疗后，口腔开口及咬合力均有明显改善。治疗组与正常组的静息肌电位无显著差异，但在研究的各个阶段，实验组与对照组的左右颞肌握紧活动均有统计学差异（P < 0.05）。结论正畸治疗改善了前牙合患者的肌肉功能，但肌肉活动并未完全恢复正常。这表明治疗后的肌肉适应可能需要更多的时间，并强调了监测肌肉功能作为全面正畸护理的一部分的重要性。

{"title":"Impact of orthodontic treatment on masticatory muscle electromyographic patterns in patients with anterior crossbite","authors":"Yi-Mien Cheng , Yueh-Ling Hsieh , Yu-Hsiang Chang , Yuan-Hou Chen , Jian-Hong Yu","doi":"10.1016/j.jds.2025.09.012","DOIUrl":"10.1016/j.jds.2025.09.012","url":null,"abstract":"<div><h3>Background/purpose</h3><div>Anterior crossbite affects facial aesthetics and may cause temporomandibular joint disorders and masticatory muscle dysfunction. Prolonged abnormal bite positioning may impact muscle activity and affect treatment stability. Although orthodontic therapy aims to realign teeth and correct bite relationships, the neuromuscular adaptations following treatment remain unclear. This study aims to investigate the changes in masticatory muscle activity before and after orthodontic treatment in patients with anterior crossbite using surface electromyography (sEMG).</div></div><div><h3>Materials and methods</h3><div>41 participants were recruited and divided into 3 groups: normal occlusion (n = 18), anterior crossbite without treatment (control, n = 6), and anterior crossbite with orthodontic treatment (experimental, n = 13). Muscle activity of the temporalis, masseter, and anterior digastric muscles was recorded across four stages. Measurements included maximum mouth opening, muscle endurance, and sEMG. Data were analyzed using IBM SPSS (IBM Corp., Armonk, NY, USA) with independent <em>t</em>-tests and repeated measures ANOVA.</div></div><div><h3>Results</h3><div>After orthodontic treatment, the experimental group showed improved mouth opening and biting force. While no significant differences in resting muscle potentials were found between treated patients and the normal group, statistically significant differences were observed between the experimental and control groups in the clenching activity of both left and right temporalis muscles (<em>P</em> < 0.05) throughout all stages of the study (<em>P</em> < 0.05).</div></div><div><h3>Conclusion</h3><div>Orthodontic treatment improved muscle function in anterior crossbite patients, but muscle activity does not fully normalize. This suggests that post-treatment muscle adaptation may require more time and highlights the importance of monitoring muscle function as part of comprehensive orthodontic care.</div></div>","PeriodicalId":15583,"journal":{"name":"Journal of Dental Sciences","volume":"21 1","pages":"Pages 374-382"},"PeriodicalIF":3.1,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145904022","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