中华口腔医学杂志最新文献

{"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":"[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":"[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}

{"title":"[Recent evaluation and analysis of the clinical effect of two closed treatment methods in children with intracapsular condyle fracture].","authors":"H Wang, Y Z Wang, J G An","doi":"10.3760/cma.j.cn112144-20240105-00013","DOIUrl":"10.3760/cma.j.cn112144-20240105-00013","url":null,"abstract":"<p><p><b>Objective:</b> To summarize and analyze clinical characteristics of pediatric mandibular condylar fractures and the long-term therapeutic effects of closed treatment. <b>Methods:</b> A retrospective study was conducted for pediatric condylar fracture in the Department of Oral and Maxillofacial Surgery of Peking University School and Hospital of Stomatology from October 2015 to October 2019, including 33 males (67.3%) and 16 females (32.7%), with an average age of (8.3±2.1) years old. According to the treatment methods, the children were divided into two groups: group A was a removable occlusal splint accompanied with functional exercise, group B was a pure functional exercise. Forty-nine cases (76 sides) children with intracapsular condylar fracture were included in this study. Twenty-three cases in group A and 26 cases in group B. The maximum month opening increased from (20.0±6.2) mm to (46.0±5.3) mm 6 months after closed treatment. Subjective evaluation, special examination, qualitative analysis and quantitative analysis of imaging were used to evaluate the condylar remodeling and functional recovery of temporomandibular joint in two groups of children after closed treatment of intracapsular condyle fracture. <b>Results:</b> There was no significant difference in subjective evaluation, maximum opening examination, mouth open-type, mandibular protrusion, lateral movement and qualitative analysis of imaging at the six-month follow-up after injury. Quantitative imaging measurements showed that the condylar anteroposterior diameter and condylar height in Group B were significantly higher than those in Group A after 1 year of injury. <b>Conclusions:</b> Closed treatment for pediatric condylar fractures can achieve satisfactory results. After 6 months of injury, the children in the two groups could recover the temporomandibular joint function and promote the condylar adaptative remodeling.</p>","PeriodicalId":23965,"journal":{"name":"中华口腔医学杂志","volume":"59 10","pages":"1008-1013"},"PeriodicalIF":0.0,"publicationDate":"2024-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142355410","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":"[Three-dimensional analysis of force distribution on maxillary dentition while distalization of first and second molars simultaneously with clear aligners].","authors":"X H He, Z X Yang, X Y Zhang, Y J Fan, Y R Hu, Z X Gu","doi":"10.3760/cma.j.cn112144-20240109-00016","DOIUrl":"10.3760/cma.j.cn112144-20240109-00016","url":null,"abstract":"&lt;p&gt;&lt;p&gt;&lt;b&gt;Objective:&lt;/b&gt; To explore the force distribution on the maxillary dentition when the first and second molars distalized simultaneously with different step sizes using clear aligners &lt;i&gt;in vitro&lt;/i&gt; in order to provide a theoretical basis for the rational design of molar distalization. &lt;b&gt;Methods:&lt;/b&gt; Clear aligners were designed to simultaneously distalize the maxillary first and second molars bilaterally, with rectangular attachments placed on the buccal surfaces of the first and second premolars, as well as the second molars. Based on different step sizes, the aligners were divided into three groups: Group A (0.15 mm per step), Group B (0.20 mm per step), and Group C (0.25 mm per step). Ten aligners were fabricated for each group using 0.76 mm thick polyethylene terephthalate glycol (PET-G) sheets. A three-dimensional force measurement system was used to measure the forces exerted on each tooth by the aligners, the first and second molars served as the target teeth and the remaining teeth as anchorage teeth. The three-dimensional force data were compared among the three groups. &lt;b&gt;Results:&lt;/b&gt; In the mesiodistal direction, the forces on the central and lateral incisors were relatively small among all three groups, with no statistically significant differences (&lt;i&gt;P&gt;&lt;/i&gt;0.05). However, significant differences were observed in the forces on the canines, first premolars, second premolars, first molars, and second molars (&lt;i&gt;P&lt;&lt;/i&gt;0.05). The distal forces on the second molars in Groups B and C were (6.13±1.45) N and (6.83±1.58) N, respectively, significantly higher than that in Group A [(3.51±1.01) N] (&lt;i&gt;P&lt;&lt;/i&gt;0.05). The distal force on the first molars in Group C [(6.62±0.89) N] was significantly higher than that in Groups A and B (&lt;i&gt;P&lt;&lt;/i&gt;0.05). The mesial reactive forces on the first and second premolars in Groups B and C were significantly higher than those in Group A (&lt;i&gt;P&lt;&lt;/i&gt;0.05). The mesial reactive force on the canines in Group C [(-2.98±1.33) N] was significantly higher than that in Group A [(-1.69±0.68) N] (&lt;i&gt;P&lt;&lt;/i&gt;0.05), while there were no significant differences between Groups B and C in the forces on the canines, first premolars, and second premolars (&lt;i&gt;P&gt;&lt;/i&gt;0.05). In the buccolingual direction, there were no statistically significant differences in the forces on the central and lateral incisors among three groups (&lt;i&gt;P&gt;&lt;/i&gt;0.05), but significant differences were observed in the forces on the canines, second premolars, and second molars (&lt;i&gt;P&lt;&lt;/i&gt;0.05). The buccolingual forces on the canines, second premolars, and second molars in Group B were (-0.56±0.54), (-2.07±0.95), (1.13±0.55) N, respectively, significantly higher than those in Group A (&lt;i&gt;P&lt;&lt;/i&gt;0.05), but there were no significant differences compared to Group C (&lt;i&gt;P&gt;&lt;/i&gt;0.05). Compared to the mesiodistal and buccolingual forces, the vertical forces on the target and anchorage teeth were relatively small in all three groups. &lt;b&gt;Conclusions:&lt;/b&gt; When using 0.76 ","PeriodicalId":23965,"journal":{"name":"中华口腔医学杂志","volume":"59 10","pages":"1037-1043"},"PeriodicalIF":0.0,"publicationDate":"2024-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142355434","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":"[Retrospective analysis of 62 cases who received clinical application of artificial temporomandibular joint].","authors":"P Wang, Y Liu, N Jiang, R Y Bi, P Y Cao, W L Zhao, M J Ren, S S Zhu","doi":"10.3760/cma.j.cn112144-20240611-00239","DOIUrl":"10.3760/cma.j.cn112144-20240611-00239","url":null,"abstract":"<p><p><b>Objective:</b> To conduct a retrospective study on the treatment outcomes of patients who underwent artificial temporomandibular joint (TMJ) replacement surgery and to evaluate the effectiveness of artificial TMJ treatment. <b>Methods:</b> This study selected 62 patients who received standard Biomet artificial TMJ treatment at Department of Orthognathic and TMJ Surgery, West China Hospital of Stomatology, Sichuan University from May 2010 to September 2023 as the study subjects. Among them, there were 15 male patients and 47 female patients. The average age was 33.5 years old(ranging from 18 to 67 years). This study statistically analyzed postoperative indicators, including maximum mouth opening, forward jaw movement, lateral movement, postoperative pain scores, and patient satisfaction. <b>Results:</b> This study included a total of 62 patients with 99 TMJ joints. No infections occurred postoperatively. The average follow-up period was 33.7 months (ranging from 7 to 170 months). At 6 months postoperatively, the mean mouth opening was (36.1±6.2) mm, lateral movement was (2.1±0.9) mm, and forward jaw movement was (1.0±0.9) mm. The pain visual analog scale score at 6 months postoperatively was (2.8±0.6), and patient satisfaction with the surgery was (8.8±1.1). Spiral CT scans conducted after surgery showed no joint dislocation or migration, and the artificial joint remained stable during the follow-up period. <b>Conclusions:</b> Artificial TMJ replacement is a valuable method for effectively restoring TMJ structure and essential functions related to mouth opening and chewing. It is worthy of promotion as a reconstructive approach for the temporomandibular joint.</p>","PeriodicalId":23965,"journal":{"name":"中华口腔医学杂志","volume":"59 10","pages":"1014-1018"},"PeriodicalIF":0.0,"publicationDate":"2024-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142355413","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":"[Introduction and interpretation of The European Society of Endodontology S3-level clinical practice guideline for treatment of pulpal and apical disease].","authors":"X Y Huang, C Lin, Z Chen, Y X Lin, L Zhang, Z Chen","doi":"10.3760/cma.j.cn112144-20240404-00134","DOIUrl":"https://doi.org/10.3760/cma.j.cn112144-20240404-00134","url":null,"abstract":"<p><p>The European Society of Endodontology published the S3-level clinical practice guideline for the treatment of pulpal and apical disease in October 2023, which provides best current therapeutic strategies supported by scientific evidences. The guideline was divided into four parts: the diagnosis and treatment of pulpitis, diagnosis and nonsurgical treatment of apical periodontitis, surgical treatment of apical periodontitis, and regenerative treatment. This article aims to introduce and interpret the guideline, and to better manage patients with pulpitis and apical periodontitis for preserving teeth over a patient's lifetime in China.</p>","PeriodicalId":23965,"journal":{"name":"中华口腔医学杂志","volume":"59 9","pages":"871-878"},"PeriodicalIF":0.0,"publicationDate":"2024-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142296854","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":"[Effects of clear aligners combined with maxillary protractor on mixed dentition patient with skeletal class Ⅲ malocclusion: a finite element study].","authors":"Y N Ma, R Y Qiang, Z L Jin","doi":"10.3760/cma.j.cn112144-20240516-00207","DOIUrl":"https://doi.org/10.3760/cma.j.cn112144-20240516-00207","url":null,"abstract":"<p><p><b>Objective:</b> To compare the effects of expansion screw with maxillary protractor and clear aligners combined with maxillary protractor on the maxilla and maxillary dentition of mixed dentition patients with class Ⅲ skeletal malocclusion using finite element analysis, further providing clinical guidance for clear aligner treatment. <b>Methods:</b> A finite element model was established based on maxillofacial cone-beam CT data of a 10-year-old boy with mixed dentition, class Ⅲ skeletal malocclusion, who visited Department of Orthodontics, School of Stomatology, The Fourth Military Medical University in January, 2024. The expander with protractor group (group A) and the clear aligners with protractor group (group B) were divided. The arch was extended by 0.25 mm in both groups, and the forward pull force was 2.94 N (working condition 1) and 4.90 N (working condition 2), respectively. The initial displacement trend of maxilla and maxillary dentition in two groups under two working conditions were evaluated. <b>Results:</b> Under two working conditions, the maxilla of both groups showed clockwise rotation and labial inclination. The labial inclination of maxilla was more significant in clear aligners with protractor group, about 2.2-3.0 times that of expander with protractor group under the same working condition. Maxillary dentition showed mesial and buccal displacement, with anterior teeth extrusion and posterior teeth intrusion in two groups under two working conditions. Under the working condition 1 and 2, the labial displacement of central incisor of clear aligners with protractor group (-0.065, -0.089 mm) were greater than that in expander with protractor group (-0.024, -0.024 mm). Under two working conditions, the posterior teeth of expander with protractor group moved close to the buccal bodily direction, while those of clear aligners with protractor group moved tilted towards the buccal direction in the horizontal direction. The forward displacement trend of maxilla and maxillary dentition in clear aligners with protractor group was more obvious than expander with protractor group with the increase of the forward pull force. Under two working conditions, the anterior teeth' s hydrostatic stress of periodontal membrane and the equivalent stress of alveolar bone in clear aligners with protractor group were higher than those in expander with protractor group, mainly concentrated on the labial cervical region of the incisor. <b>Conclusions:</b> Clear aligners combined with maxillary protractor can produce forward force on the maxilla, but labial inclination occurs in the anterior teeth. It can be an effective orthopedic treatment strategy for mixed dentition patients with class Ⅲ skeletal malocclusion.</p>","PeriodicalId":23965,"journal":{"name":"中华口腔医学杂志","volume":"59 9","pages":"919-926"},"PeriodicalIF":0.0,"publicationDate":"2024-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142296851","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}