中华口腔医学杂志最新文献

{"title":"[Observation of dynamic position and morphological changes of temporomandibular joint discs under Angle's classification].","authors":"X D Mu, H H Liu, X F Huang, M Hu","doi":"10.3760/cma.j.cn112144-20240624-00248","DOIUrl":"10.3760/cma.j.cn112144-20240624-00248","url":null,"abstract":"<p><p><b>Objective:</b> To observe the dynamic changes of the temporomandibular joint (TMJ) disc in joint movement under different Angle's classification, providing reference for understanding joint functional movement and providing a basis for more accurate clinical imaging diagnosis. <b>Methods:</b> A total of 30 patients (13 males and 17 females) with temporomandibular disorders who were admitted to Beijing Friendship Hospital, Capital Medical University and General Hospital of the People's Liberation Army from January 2022 to April 2024 were enrolled. Thirty adults (13 males and 17 females) with different Angle's classification, with an average age of (34.4±8.5) years, were subjected to dynamic imaging of their TMJ from the closed position to the maximum opening position, and then to the closed position using MRI. The position and morphological changes of the articular discs were observed. <b>Results:</b> The results showed that volunteers with no displacement of the articular disc in class Ⅰ, Ⅱ, and Ⅲ relationships had different shapes of the articular disc during open and closed mouth movements. However, in the maximum opening position, the articular disc were all located directly below the maxillary nodules, and their shape is double concave. In terms of irreversible anterior displacement of the articular disc, in class Ⅰ Angle, the posterior zone of the disc contacts the anterior inclined plane of condyle from the maximum opening position back to the front of the closing position. In class Ⅱ, the posterior zone of the disc contacts the anterior inclined plane of condyle from the beginning of opening position to maximum opening position. In class Ⅲ, the posterior zone of the disc is always in contact with the anterior inclined plane of condyle throughout the entire movement process. And among them, the articular disc presents a forward displacement state at the closing position, its morphology undergoes folding phenomenon. When the openness is 2.5 cm, the articular disc moves up to a certain extent, and is closer to the anterior inclined plane of condyle, and its shape is also partially changed. When the openness is 4.3 cm, the shape of the articular disc, located between the anterior inclined plane of the joint node and the posterior inclined plane of the condyle, is typical double concave, which is sufficient to show that the articular disc is reversible when maximum opening position is reached. In terms of reversible anterior disc displacement, in class Ⅰ Angle, the posterior zone of the disc contact with the anterior inclined plane of condyle at the beginning of the opening position and the end of the closing position. In classⅡ Angle, the posterior zone of the articular disc is not in contact with the anterior inclined plane of condyle. In class Ⅲ Angle, the posterior zone of the articular disc contact with the anterior inclined plane of condyle at the end of the closing position. <b>Conclusions:</b> Multi level dynamic MR imaging dat","PeriodicalId":23965,"journal":{"name":"中华口腔医学杂志","volume":"59 10","pages":"1019-1026"},"PeriodicalIF":0.0,"publicationDate":"2024-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142355408","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":"[Study on the variation characteristics of serum lymphocyte subsets, immunoglobulins, and complement levels in patients with cheilitis].","authors":"Q Zhang, M Cheng, R Zhao, Q Q Ma","doi":"10.3760/cma.j.cn112144-20240319-00116","DOIUrl":"10.3760/cma.j.cn112144-20240319-00116","url":null,"abstract":"<p><p><b>Objective:</b> To analyze the variations of serum lymphocyte subsets, immunoglobulins, and complement levels in patients with cheilitis, and to explore the associations between the changes in serum immune levels and the onset of cheilitis. <b>Methods:</b> A retrospective analysis was conducted on 153 patients with cheilitis who visited the Department of Stomatology, The First Affiliated Hospital of Zhengzhou University from January 2017 to December 2023. They were compared with 50 healthy individuals who visited the physical examination department during the same period. The changes of serum lymphocyte subsets, immunoglobulins, and complement levels in patients with cheilitis were analyzed. Main detection indicators as the percentage of total T lymphocytes (T%), helper/inducer T lymphocytes (CD4<sup>+</sup>T%), absolute numbers of total T lymphocytes (T#), absolute numbers of helper/inducer T lymphocytes (CD4<sup>+</sup>T#), percentage of natural killer cells (NK%), absolute numbers of B lymphocytes (B#), immunoglobulins IgG, IgM and complement C3, C4 were included. Multivariate logistic regression was used to explore the relationship between serum lymphocyte subsets, immunoglobulins, complement levels and cheilitis. Subgroup analysis was further conducted on patients with cheilitis based on gender, age, cheilitis type and severity. <b>Results:</b> The levels of T% [69.54% (64.41%, 75.14%)], CD4<sup>+</sup>T% [(35.09±7.10)%], T# [1 328.00 (1 054.00, 1 560.50)], and CD4<sup>+</sup>T# [653.00 (505.00, 831.50)] in the cheilitis group were significantly lower than those in the control group respectively [72.33% (69.41%, 75.47%), (39.07±5.84)%, 1 483.50 (1 245.75, 1 805.25), 769.00 (687.25, 933.00), with the corresponding statistical test results of <i>Z=</i>-2.64, <i>P=</i>0.008; <i>t=</i>3.58, <i>P<</i>0.001; <i>Z=</i>-2.80, <i>P=</i>0.005; <i>Z=</i>-3.80, <i>P<</i>0.001]. The level of NK% [16.21% (12.16%, 21.29%)] was significantly higher in the cheilitis group compared to the control group [14.61% (10.97%, 17.87%)] (<i>Z=</i>-2.28, <i>P=</i>0.023). IgG [12.29 (10.77, 13.73) g/L] and IgM levels [1.18 (0.86, 1.58) g/L] were significantly higher in the cheilitis group than in the control group respectively [11.52 (10.16, 12.91) g/L, 0.99 (0.77, 1.26) g/L] (<i>Z=</i>-2.24, <i>P=</i>0.025; <i>Z=</i>-2.10, <i>P=</i>0.036), while complement C3 [(1.09±0.17) g/L] and C4 levels [0.23 (0.19, 0.28) g/L] were significantly lower in the cheilitis group compared to the control [(1.18±0.17) g/L, 0.31(0.24, 0.35) g/L] (<i>t=</i>3.10, <i>P=</i>0.002; <i>Z=</i>-4.79, <i>P<</i>0.001). Logistic regression analysis showed that elevated IgG (<i>P=</i>0.021), decreased C4 (<i>P<</i>0.001), decreased CD4<sup>+</sup>T% (<i>P=</i>0.003), and decreased T# (<i>P=</i>0.035) were independent influencing factors for the occurrence of cheilitis. The rate of abnormal lymphocyte immune analysis in the cheilitis group [68.0% (104/153)] was significantly higher than that in ","PeriodicalId":23965,"journal":{"name":"中华口腔医学杂志","volume":"59 10","pages":"1027-1036"},"PeriodicalIF":0.0,"publicationDate":"2024-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142355414","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":"[New intraoral digital impression with pneumatic gingival retraction used in the restoration of crown for posterior teeth: a case report].","authors":"X K Xu, M Z Zhang, Z N Liu, Y C Sun, H Chen, W W Li, X Y Zhao, Y J Jia, S J Xiao, C Ma, X J Chen, T F Jiang, X B Zhao, S K Tian","doi":"10.3760/cma.j.cn112144-20240530-00227","DOIUrl":"10.3760/cma.j.cn112144-20240530-00227","url":null,"abstract":"<p><p>In fixed prosthodontics, clear exposure of the preparation margin is the prerequisite for obtaining accurate digital impressions and improving the marginal fit of restorations. To resolve the issues associated with the cord retraction technique, such as pain, acute injury, and prolonged procedural time, this study proposes a new technology for intraoral digital impression taking with pneumatic gingival retraction. The new scanning head blows a high-speed airflow that instantaneously separates the free gingiva, locally exposing the subgingival preparation margin. Combined with the farthest point preservation stitching algorithm based on the distance from the normal vector and high-speed laser scanning photography, it achieves global preparation edge data and gingival reconstruction, realizing painless, non-invasive, and efficient precise acquisition of the preparation margin. Using this new technique, a patient with a full porcelain crown restoration on a posterior tooth was treated. The digital impression revealed a clear margin of the preparation, and the crown made from this data has a good marginal fit.</p>","PeriodicalId":23965,"journal":{"name":"中华口腔医学杂志","volume":"59 10","pages":"1044-1048"},"PeriodicalIF":0.0,"publicationDate":"2024-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142355407","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":"[Double mucogingival surgery to preserve teeth with poor prognosis: a case report].","authors":"J C Dong, Y Liao, H W Chen, M J Sun, W T Sun, S S Gu, Z C Song","doi":"10.3760/cma.j.cn112144-20240409-00140","DOIUrl":"10.3760/cma.j.cn112144-20240409-00140","url":null,"abstract":"","PeriodicalId":23965,"journal":{"name":"中华口腔医学杂志","volume":"59 10","pages":"1049-1054"},"PeriodicalIF":0.0,"publicationDate":"2024-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142355404","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":"[Interpretation and consideration of core outcome set in clinical intervention study of oral lichen planus].","authors":"Z H Wei, Z Y Wang, Q M Chen","doi":"10.3760/cma.j.cn112144-20240307-00099","DOIUrl":"10.3760/cma.j.cn112144-20240307-00099","url":null,"abstract":"<p><p>Oral lichen planus (OLP), as a chronic inflammatory disease of oral mucosa, cannot be completely cured at present. OLP can develop into oral squamous cell carcinoma and reduce the life quality of patients. The development of high-quality evidence-based strategies for OLP clinical management can effectively alleviate the clinical symptoms and reduce the risk of cancerization, thus to improve the life quality of patients. However, there is a wide variety of outcomes and a lack of uniform standards in previous OLP clinical intervention studies. Therefore, evidence-based analysis of relevant studies cannot be conducted to provide more convincing guidance for clinical diagnosis and treatment. To reduce the heterogeneity of clinical intervention studies, form a data pool for meta-analysis, and provide higher quality evidence-based OLP clinical management protocols, the World Workshop on Oral Medicine Ⅷ identified a core outcome set (COS) for OLP in three steps from March 2022 to January 2023. This article introduces the process of COS formulation, interprets OLP COS, and puts forward the advantages and drawback of OLP COS in this paper. We encourage researchers to use this COS in their future OLP clinical studies for improving the clinical significance and evidence-based value of studies.</p>","PeriodicalId":23965,"journal":{"name":"中华口腔医学杂志","volume":"59 10","pages":"998-1003"},"PeriodicalIF":0.0,"publicationDate":"2024-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142355405","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":"[Interpretation of a clinical practice guideline on the management of chronic pain associated with temporomandibular joint disorders].","authors":"C X Li, Z Q Song, X Jin, Z C Gong, H Liu, X Liu, M C Ding, J L Sun, X Long, B Shao","doi":"10.3760/cma.j.cn112144-20231229-00313","DOIUrl":"10.3760/cma.j.cn112144-20231229-00313","url":null,"abstract":"<p><p>Temporomandibular disorders (TMD) are a heterogeneous group of diseases that affect the temporomandibular joint, chewing muscle system, dental occlusion, and even various structures throughout the body, with significant characteristics of biological-psychological-social pattern. TMD related chronic pain, as the most important clinical symptom, can result in negative emotions seriously affecting patients' quality of life and physical and mental health. Although a variety of therapies have been previously reported to treat TMD related chronic pain, there is a lack of widely recognized therapies. Professor Jason W Busse (from Michael G DeGroote National Pain Centre, McMaster University, Hamilton ON, Canada) took the lead and collaborated with multiple internationally renowned schools/hospitals of stomatology to develop an international consensus on the management of chronic pain associated with TMD, a clinical practice guideline, which took two years and was published in December 15th, 2023 in a global top journal of clinical research <i>The British Medical Journal</i>. This clinical practice guideline explored the comparative effectiveness of available therapies for chronic pain associated with TMD, conditionally recommended the specific intervention for different treatment or pain relief, proposed a comprehensive, agreed, and standardized clinical practice guideline. This present article describes the methodology and key elements of the clinical practice guideline to help clinicians fully understand and appropriately apply this guidance, which could provide the references for clinical practice of TMD associated chronic pain in China.</p>","PeriodicalId":23965,"journal":{"name":"中华口腔医学杂志","volume":"59 10","pages":"988-997"},"PeriodicalIF":0.0,"publicationDate":"2024-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142355406","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":"[Research advances of complications regarding temporomandibular joint prosthesis replacement].","authors":"M Q Ma, T Shang, Y Mao, X Z Chen, S Y Zhang, S Y Wang","doi":"10.3760/cma.j.cn112144-20240611-00237","DOIUrl":"10.3760/cma.j.cn112144-20240611-00237","url":null,"abstract":"<p><p>Replacement of the temporomandibular joint (RTJ) has undergone decades of technological improvements and is now an important treatment for end-stage temporomandibular joint (TMJ) disease. The main complications of RTJ include aseptic loosening, heterotopic ossification, postsurgical infection, hypersensitivity reaction, prosthesis loosening or malposition, nerve injury and severe bleeding. Improvement in clinical technique is now the key to resolving complications. In the future, improvements in prosthetic materials may be an important development for newer iterations. With the development and popularity of TMJ surgical techniques, prosthesis-related complications will increasingly come into clinical view. This article provides a systematic review of the complications of RTJ prosthesis replacement and the measures to deal with them, and looks forward to the direction of the development of this field from the perspective of reducing complications, so as to provide a reference for clinical work.</p>","PeriodicalId":23965,"journal":{"name":"中华口腔医学杂志","volume":"59 10","pages":"1059-1064"},"PeriodicalIF":0.0,"publicationDate":"2024-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142355411","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":"[Research and development of intraoral scanning in edentulous soft tissue].","authors":"K H Deng, M X Li, Y J Mao, S K Tian, Y C Sun","doi":"10.3760/cma.j.cn112144-20240309-00105","DOIUrl":"10.3760/cma.j.cn112144-20240309-00105","url":null,"abstract":"<p><p>During the complete denture restoration process, accurate impression making is a crucial step for achieving good denture retention. With the increasing popularity of intraoral scanning technology in fixed restoration, the use of intraoral scanning technology in complete denture restoration for edentulous jaw has also been developed. This article systematically reviews the research progress and application of intraoral scanning of edentulous soft tissue, focusing on difficulties in intraoral scanning of edentulous jaws, scanning accuracy, clinical application effects, as well as precautions involved. The aim is to provide references for clinical application.</p>","PeriodicalId":23965,"journal":{"name":"中华口腔医学杂志","volume":"59 10","pages":"1070-1074"},"PeriodicalIF":0.0,"publicationDate":"2024-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142355412","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":"[The influence of systemic factors on the prognosis of apical periodontitis].","authors":"Z H Xue, Y M Dong","doi":"10.3760/cma.j.cn112144-20240113-00021","DOIUrl":"10.3760/cma.j.cn112144-20240113-00021","url":null,"abstract":"<p><p>Apical periodontitis (AP) is an inflammatory disease that occurs in the periapical tissue. The treatments of AP mainly include root canal therapy and endodontic surgery which promote the repair of periapical bone tissue by infections clearing and controlling inside or outside the root canal. The evaluation on efficacies of root canal therapy and endodontic surgery is mainly based on clinical and periapical imaging examinations, and the prognosis relates to multiple factors. The systemic factors of patients can directly or indirectly affect the healing of apical periodontitis. The present review summarizes the influence factors, including age, smoking habits, systemic diseases and systemic medication on the prognosis of apical periodontitis treatment, in order to increase the attention of clinicians.</p>","PeriodicalId":23965,"journal":{"name":"中华口腔医学杂志","volume":"59 10","pages":"1065-1069"},"PeriodicalIF":0.0,"publicationDate":"2024-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142355415","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":"[Overview of the development of temporomandibular joint surgery in China from the perspective of oral and maxillofacial surgeons].","authors":"L Lu","doi":"10.3760/cma.j.cn112144-20240812-00310","DOIUrl":"10.3760/cma.j.cn112144-20240812-00310","url":null,"abstract":"<p><p>Temporomandibular joint (TMJ) surgery in China, as an important part of oral and maxillofacial surgery, has made significant progress in the past 20 years. It is mainly reflected in the reduction of TMJ dislocated joint disc, prosthetic total TMJ reconstruction, and the treatment of adult condylar fracture. There are major controversies about the surgical methods and indications for the reduction of the dislocated/displacement joint disc of the temporomandibular disorders.</p>","PeriodicalId":23965,"journal":{"name":"中华口腔医学杂志","volume":"59 10","pages":"1004-1007"},"PeriodicalIF":0.0,"publicationDate":"2024-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142355409","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}