中华口腔医学杂志最新文献

{"title":"[Progress in research on the effects of light-curing parameters on polymerization characteristics and long-term stability of composite resins].","authors":"S Q Li, X W Tong, Z C Lu, H Yu","doi":"10.3760/cma.j.cn112144-20260430-00272","DOIUrl":"https://doi.org/10.3760/cma.j.cn112144-20260430-00272","url":null,"abstract":"<p><p>Light-curing parameters are critical determinants of the degree of monomer conversion, mechanical properties, and color stability in composite resins. Currently, light-curing technology is evolving toward multi-mode, multi-peak wavelength, and intelligent programmed irradiation, while the photoinitiator systems of resins are transitioning from traditional camphorquinone/amine to novel amine-free systems, resulting in significantly varied responses of different materials to curing parameters. This review summarizes the comprehensive effects of light-curing parameters on the polymerization performance and long-term stability of composite resins, with a focus on the applicable boundaries of the exposure reciprocity law (ERL), the differentiated responses of various photoinitiator systems, and the potential correlation between radiant energy and color stability, aiming to provide evidence-based guidance for the precise matching of clinical light-curing protocols.</p>","PeriodicalId":23965,"journal":{"name":"中华口腔医学杂志","volume":"61 9","pages":"1391-1396"},"PeriodicalIF":0.0,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148866645","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"[Clinical challenges caused by defective Hertwig's epithelial root sheath proliferation Ⅱ: pathogenesis and treatment of C-shaped root canal].","authors":"L S Gu, X Wei, L Yue","doi":"10.3760/cma.j.cn112144-20251201-00483","DOIUrl":"https://doi.org/10.3760/cma.j.cn112144-20251201-00483","url":null,"abstract":"<p><p>Defective proliferation of Hertwig's epithelial root sheath can lead to developmental root anomalies, classically represented as taurodontism and C-shaped canals found in fused roots. While taurodontism is primarily caused by a temporal delay in the proliferation of Hertwig's epithelial root sheath epithelial flaps , the formation of C-shaped canals originates from a spatial insufficiency in their proliferation. Clinicians' understanding of C-shaped canals is often limited to the \"C\"-shaped orifice pattern on the pulp chamber floor, lacking a systematic appreciation of their complex three-dimensional anatomy and the associated clinical challenges. This deficiency can easily lead to iatrogenic complications and even treatment failure. This paper focuses on the etiology of C-shaped canals and their clinical implications. From the developmental perspective, it elucidates the formation mechanism of C-shaped canals, comprehensively reviews the evolution of their classification systems and current research status, and provides an in-depth analysis of the difficulties encountered in key treatment stages, including diagnosis and classification, canal preparation, obturation, and coronal restoration. Corresponding strategies are proposed to help clinicians establish a three-dimensional understanding of C-shaped canals and enhance their diagnostic and therapeutic capabilities.</p>","PeriodicalId":23965,"journal":{"name":"中华口腔医学杂志","volume":"61 9","pages":"1268-1274"},"PeriodicalIF":0.0,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148866991","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"[Maxillary anterior cyst enucleation with anterior superior alveolar artery variation and digital implant esthetic restoration].","authors":"W H He, Y Z Feng, L N Guo","doi":"10.3760/cma.j.cn112144-20260507-00282","DOIUrl":"https://doi.org/10.3760/cma.j.cn112144-20260507-00282","url":null,"abstract":"","PeriodicalId":23965,"journal":{"name":"中华口腔医学杂志","volume":"61 9","pages":"1367-1372"},"PeriodicalIF":0.0,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148866156","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"[Multidisciplinary combined treatment of generalized Stage Ⅳ Grade C periodontitis with severe malocclusion: a case report].","authors":"S Q Zhong, L L Chen, Y M Feng, L H Lei","doi":"10.3760/cma.j.cn112144-20260130-00071","DOIUrl":"https://doi.org/10.3760/cma.j.cn112144-20260130-00071","url":null,"abstract":"","PeriodicalId":23965,"journal":{"name":"中华口腔医学杂志","volume":"61 9","pages":"1378-1383"},"PeriodicalIF":0.0,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148866664","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"[A case of immediate implant restoration for consecutive tooth loss in the aesthetic zone using modified tunnel technique].","authors":"N Wang, H Sun, H J Guo, S H He, X Y Zhang, Q Wang","doi":"10.3760/cma.j.cn112144-20260430-00274","DOIUrl":"https://doi.org/10.3760/cma.j.cn112144-20260430-00274","url":null,"abstract":"","PeriodicalId":23965,"journal":{"name":"中华口腔医学杂志","volume":"61 9","pages":"1362-1366"},"PeriodicalIF":0.0,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148867031","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"[Evaluation of the efficacy and safety of multi-wavelength semiconductor laser for oral soft tissue incision and gingivectomy: a prospective, multicenter, randomized, parallel-controlled, non-inferiority clinical trial].","authors":"X Y Chen, Y L Hao, C Y Han, L J Hu, X T Shen, D F Guo, B Chen, T R Zhou, C X Liu","doi":"10.3760/cma.j.cn112144-20260303-00147","DOIUrl":"https://doi.org/10.3760/cma.j.cn112144-20260303-00147","url":null,"abstract":"<p><p><b>Objective:</b> To evaluate the clinical efficacy and safety of the multi-wavelength semiconductor laser therapeutic instrument in oral soft tissue incision and gingivectomy. <b>Methods:</b> A total of 156 patients who received mandibular impacted wisdom tooth extraction combined with oral soft tissue incision or gingivectomy at the Stomatological Hospital of Zhejiang University School of Medicine, Zhejiang Hospital and Wenzhou Central Hospital between June 2023 and March 2024 were enrolled and divided into experimental group (<i>n=</i>78) and control group (<i>n=</i>78) by stratified block randomization method. During the operation, the experimental group used the multi-wavelength semiconductor laser therapeutic instrument to complete soft tissue incision and gingivectomy in the surgical area, while the control group used the single-wavelength semiconductor laser therapeutic instrument for the corresponding procedures. Follow-up assessments were conducted one week and one month postoperatively for both groups of patients. Primary outcomes were the excellent and good rate of intraoperative hemostasis and wound healing at one week postoperatively, which were analyzed by non-inferiority test. Secondary outcomes included laser cutting efficiency, convenience of disinfection, operational convenience, operational safety and stability, which were assessed using the Wilcoxon rank-sum test, χ2 test or Fisher's exact probability method. Safety indicator was the incidence of adverse events, which was analyzed using Fisher's exact probability method. <b>Results:</b> Primary efficacy evaluation: the excellent and good rate of intraoperative hemostasis [100.0% (78/78) vs. 100.0% (78/78)] and wound healing [100.0% (78/78) vs 98.7% (77/78)] in the experimental group were both non-inferior to those in the control group. Secondary efficacy evaluation: the laser cutting efficiency in experimental group [(0.08±0.07) mm/s] was significantly higher than that in control group [(0.06±0.04) mm/s] (<i>Z=</i>-2.87, <i>P=</i>0.004). There were no significant differences in disinfection convenience, operational convenience, safety, and stability between the two groups (all <i>P></i>0.05). Regarding safety evaluation, no adverse events occurred in the experimental group, while 2 cases (2.6%) of mild or moderate adverse events and 1 case (1.3%) of serious adverse events occurred in the control group, with no significant difference (<i>P></i>0.05). <b>Conclusions:</b> The efficacy and safety of the multi-wavelength semiconductor laser therapeutic instrument are non-inferior to the control products, meeting the standards for clinical validation.</p>","PeriodicalId":23965,"journal":{"name":"中华口腔医学杂志","volume":"61 9","pages":"1330-1338"},"PeriodicalIF":0.0,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148867105","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"[Minimal tooth movement combined with minimally invasive restoration to improve esthetic defects of anterior teeth: a case report].","authors":"B Y Qiu, M Meng, C Guo, H H Yu, L Zhang","doi":"10.3760/cma.j.cn112144-20260509-00294","DOIUrl":"https://doi.org/10.3760/cma.j.cn112144-20260509-00294","url":null,"abstract":"","PeriodicalId":23965,"journal":{"name":"中华口腔医学杂志","volume":"61 9","pages":"1373-1377"},"PeriodicalIF":0.0,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148866401","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"[Trends in oral cancer mortality in China from 2004 to 2021].","authors":"G G Hou, L Xie","doi":"10.3760/cma.j.cn112144-20260203-00087","DOIUrl":"https://doi.org/10.3760/cma.j.cn112144-20260203-00087","url":null,"abstract":"<p><p><b>Objective:</b> To analyze the level and trend of oral cancer mortality in China from 2004 to 2021. <b>Methods:</b> Mortality data were derived from the national mortality surveillance dataset of China's Disease Surveillance Points System (2004-2021) released by the Chinese Center for Disease Control and Prevention. Age-standardized mortality rates (ASMR) were calculated using the 2010 Chinese standard population. Joinpoint analysis, age-period-cohort (APC) analysis, and decomposition analysis were employed to examine the oral cancer mortality rates across different years and among populations with varying demographic characteristics. <b>Results:</b> From 2004 to 2021, the age-standardized mortality rate (ASMR) of oral cancer in China exhibited a significant downward trend (EAPC=-0.70, <i>P=</i>0.001). This decline was pronounced in urban areas (EAPC=-1.44, <i>P</i><0.001), whereas rural areas showed a stable trend (EAPC=-0.24, <i>P</i>=0.27). The age effect indicated that mortality risk increased with age in both urban and rural populations. The period effect revealed a decreasing trend in period-specific relative risk (RR) for urban residents. The cohort effect demonstrated that more recent birth cohorts in urban areas had progressively lower mortality risk. Decomposition analysis identified population growth as the primary driver of oral cancer deaths, followed by population aging, in both urban and rural areas. <b>Conclusions:</b> From 2004 to 2021, the overall ASMR of oral cancer in China declined significantly, with notable disparities across urban-rural, gender, and age groups. In urban areas, both period and cohort effects showed favorable trends, with mortality risk decreasing over time and across successive birth cohorts.</p>","PeriodicalId":23965,"journal":{"name":"中华口腔医学杂志","volume":"61 9","pages":"1339-1344"},"PeriodicalIF":0.0,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148866903","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"[Clinical diagnosis and treatment strategies for orthodontic-related mucogingival deformities and conditions].","authors":"C J Hu, L J Luo","doi":"10.3760/cma.j.cn112144-20260115-00026","DOIUrl":"https://doi.org/10.3760/cma.j.cn112144-20260115-00026","url":null,"abstract":"<p><p>Gingival recession is a common complication of orthodontic treatment, with its occurrence associated with multiple factors such as periodontal phenotype, the width and thickness of keratinized gingiva, alveolar bone morphology, and plaque control. This article first reviews the impact of orthodontic tooth movement, particularly labial tipping of anterior teeth, on periodontal hard and soft tissues. It emphasizes that the risks of orthodontic-related bone fenestration, bone dehiscence, and gingival recession are significantly increased in the presence of a thin gingival biotype, inadequate keratinized gingiva, as well as thinned or deficient buccal bone plates. Subsequently, through case integration, a phased clinical decision-making pathway is proposed: during the three stages of pre-, mid-, and post-orthodontics, baseline risk assessment, judgment of tooth movement direction and tissue volume on the pressure side, the timing and methods of preventive/therapeutic soft/hard tissue augmentation and root coverage procedures are respectively addressed. This approach aims to establish a comprehensive patient management strategy centered on \"mucogingival consideration\" for orthodontic patients, thereby providing practical guidance for the clinical diagnosis and treatment of orthodontic-related periodontal mucogingival deformities and conditions.</p>","PeriodicalId":23965,"journal":{"name":"中华口腔医学杂志","volume":"61 9","pages":"1291-1298"},"PeriodicalIF":0.0,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148866976","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"[Accuracy of jaw relation transfer using a digital transfer table integrated with mechanical facebow technology].","authors":"Q Cai, Y X Lin, K L Yu, J Chen, S H Zhang","doi":"10.3760/cma.j.cn112144-20260421-00246","DOIUrl":"https://doi.org/10.3760/cma.j.cn112144-20260421-00246","url":null,"abstract":"&lt;p&gt;&lt;p&gt;&lt;b&gt;Objective:&lt;/b&gt; To optimize the indirect digital transfer workflow utilizing an anatomical facebow, this study proposed a modified digital transfer table (MDTT) method based on the counterweight plate structure and magnetic embedding chimeric design of a magnetic suction transfer table. Furthermore, this study evaluated the accuracy of this method in transferring the craniomaxillary relationship, providing theoretical basis and technical support for its clinical application. &lt;b&gt;Methods:&lt;/b&gt; A total of 28 volunteers and patients (11 males, 17 females; aged 18-29 years), including student volunteers and partially edentulous patients, were retrospectively enrolled from the Department of Implantology,School and Hospital of Stomatological Fujian Medical University between July 2024 and June 2026. For each subject, the collected data included maxillary dentition plaster models of all subjects, maxillary dentition digital models obtained by scanning plaster models, craniomaxillary positional relationship data of conventional plaster-fixed transfer table-occlusal fork and magnetically fitted transfer table-occlusal fork acquired via anatomical facebow, and craniofacial cone-beam CT (CBCT) data. The maxillary dentition models with craniomaxillary spatial information were transferred to a virtual articulator through two different workflows: the conventional anatomical facebow-based indirect digital transfer method (AFB group) and the novel MDTT method (MDTT group). Seven dental cusp landmark points were marked and matched via grid registration, including the mesiobuccal cusps of bilateral maxillary first molars, the tips of bilateral maxillary canines, the distoincisal angles of bilateral maxillary central incisors, and the midpoint of the line connecting the mesioincisal angles of bilateral maxillary central incisors. Taking the three-dimensional craniomaxillary relationship reconstructed by CBCT as the gold standard, the deviations of occlusal plane angle, three-dimensional root mean square error (RMSE) of overall dentition position, three-dimensional linear RMSE of landmark points, and three-dimensional axial deviation of each landmark were calculated in both AFB and MDTT groups to evaluate the transfer trueness. For precision assessment, pairwise registration and comparison were performed based on three repeated MDTT transfer operations, and the corresponding RMSE values and intraclass correlation coefficient (&lt;i&gt;ICC&lt;/i&gt;) were calculated. &lt;b&gt;Results:&lt;/b&gt; Compared to the reference standard, the MDTT group exhibited a significantly smaller occlusal plane angular deviation (1.62°±1.04°) than the AFB group (1.83°±1.07°), with a statistically significant difference (&lt;i&gt;t&lt;/i&gt;=1.00, &lt;i&gt;P&lt;/i&gt;=0.016). No statistically significant differences were observed in the three-dimensional dentition positional RMSE values or the three-dimensional axial deviations of the dentition between the two groups. Analysis of cusp landmark deviations revealed a statisticall","PeriodicalId":23965,"journal":{"name":"中华口腔医学杂志","volume":"61 9","pages":"1315-1322"},"PeriodicalIF":0.0,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148867006","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}