Hua xi kou qiang yi xue za zhi = Huaxi kouqiang yixue zazhi = West China journal of stomatology最新文献

{"title":"Application of intraoral scanning registration implant robot in dental implant surgery.","authors":"Nenghao Jin, Bo Qiao, Liang Zhu, Fanhao Meng, Quanquan Lin, Liangbo Li, Lejun Xing, Rui Zhao, Haizhong Zhang","doi":"10.7518/hxkq.2024.2024213","DOIUrl":"10.7518/hxkq.2024.2024213","url":null,"abstract":"<p><strong>Objectives: </strong>This paper aims to investigate the application of intraoral scanning and cone beam computed tomography (CBCT) registration implant robot in dental implant surgery.</p><p><strong>Methods: </strong>The data of 40 cases with dental defect of robot-assisted implantation from November 2023 to May 2024 were retrospectively analyzed. Before the operation, the intraoral scan data and CBCT data of the positioning markers were automatically fused with the initial CBCT images, and the registration error was calculated. The average registration error of positioning markers was determined during the operation, and the implantation accuracy was analyzed after the operation.</p><p><strong>Results: </strong>The intraoral scan data and CBCT data of 40 patients with dental defect wearing positioning markers were successfully registered with the initial CBCT image, and the registration errors were (0.157±0.026) mm and (0.154±0.033) mm, respectively. Statistical analysis showed no statistical significance between them. The registration errors of the marker was (0.037 3±0.003 6) mm. A total of 55 implants were performed, and the total deviations of the implant point and the apical point were (0.78±0.41) and (0.89±0.28) mm, respectively. The transverse deviations of the implant point and the apical point were (0.44±0.36) and (0.58±0.25) mm, respectively. The depth deviations of the implant point and the apical point were (0.51±0.32) and (0.54±0.36) mm, respectively. The deviation of the implant angle was 1.24°±0.67°.</p><p><strong>Conclusions: </strong>The fusion technology based on intraoral scanning and CBCT registration can meet the accuracy requirements of preoperative registration of oral implant robots. The technology increases the choice of registration methods before robot-assisted dental implant surgery and reduces the multiple radiation exposuresof the patient.</p>","PeriodicalId":94028,"journal":{"name":"Hua xi kou qiang yi xue za zhi = Huaxi kouqiang yixue zazhi = West China journal of stomatology","volume":"42 6","pages":"804-809"},"PeriodicalIF":0.0,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11669928/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142752623","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Assessment of the efficacy and analysis of prognostic factors of flap division for postoperative airway obstruction following posterior pharyngeal flap.","authors":"Yanan Li, Bing Shi, Jingtao Li","doi":"10.7518/hxkq.2024.2024218","DOIUrl":"10.7518/hxkq.2024.2024218","url":null,"abstract":"<p><strong>Objectives: </strong>Flap division is the primary method for treating postoperative airway obstruction following pharyngeal flap surgery. However, a discussion on the treatment effectiveness and prognosis of this surgery is lacking. Therefore, this study aims to explore the effectiveness of flap division in improving airway obstruction and hyponasality after pharyngoplasty and to analyze the risk factors for postoperative complications.</p><p><strong>Methods: </strong>A retrospective review was conducted on the data of all patients who underwent flap division following pharyngeal flap for airway obstruction at our institution. Pre- and post-operative assessments of ventilation, speech, and related factors were performed using the nasal obstruction symptom evaluation scale, speech evaluation scale, nasopharyngeal fiberscope, and lateral cephalometric radiographs. A nasopharyngeal fiberscope was utilized to observe the airway port of the patients, velopharyngeal closure, and the mobility of the lateral pharyngeal walls. Lateral cephalometric radiographs were employed to evaluate the patient's maxillomandibular relationship and adenoid dimensions. A logistic regression model incorporating univariate analysis and multivariate analyses was established to identify the prognostic factors influencing the occurrence of persistent postoperative airway obstruction and hypernasality.</p><p><strong>Results: </strong>Among the 63 patients, 56 patients (88.9%) experienced a reduction in the severity of airway obstruction postoperatively but 20 patients (31.7%) still presented with moderate-to-severe airway obstruction. Age at surgery (<i>P</i>=0.023) and adenoid hypertrophy (<i>P</i>=0.003) were significantly associated with persistent postoperative airway obstruction. All 39 individuals exhibiting preoperative hyponasality demonstrated effective resolution after flap division, and 11 patients (17.5%) experienced mild hypernasality postoperatively. Unilateral port obstruction (<i>P</i>=0.004) and BMI (<i>P</i>=0.027) were identified as potential independent factors influencing the development of postoperative hypernasality.</p><p><strong>Conclusions: </strong>Flap division is an effective measure for improving postoperative airway obstruction and hyponasality following pharyngeal flap, although some patients may continue to experience persistent airway obstruction and develop hypernasality after division. Age at surgery and adenoid hypertrophy are prognostic factors for persistent airway obstruction following flap division. Unilateral/bilateral nasal airway obstruction and BMI are related factors for post-operative hypernasality.</p>","PeriodicalId":94028,"journal":{"name":"Hua xi kou qiang yi xue za zhi = Huaxi kouqiang yixue zazhi = West China journal of stomatology","volume":"42 6","pages":"755-763"},"PeriodicalIF":0.0,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11669923/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142752627","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Research progress in problem-solving nickel-titanium rotary instrument in endodontics.","authors":"Chen Cui, Jingjing Quan, Xi Wei","doi":"10.7518/hxkq.2024.2024225","DOIUrl":"10.7518/hxkq.2024.2024225","url":null,"abstract":"<p><p>Root canal therapy is the primary treatment method for pulpal and periapical diseases. Various advanced endodontic instruments for mechanical preparation have been marketed. The emergence of nickel-titanium rotary instruments has greatly improved the efficiency of root canal preparation. New demands have been put forward for nickel-titanium rotary instruments as a result of the deepening of clinicians' awareness of root canal anatomy system as well as the purpose and prognosis of root canal treatment. These clinical-oriented demands accelerate instrument reform and innovation. This work presents new marketed nickel-titanium systems and discusses the advantages and limitations of these systems and how they perform in terms of the efficiency and outcome of root canal preparation.</p>","PeriodicalId":94028,"journal":{"name":"Hua xi kou qiang yi xue za zhi = Huaxi kouqiang yixue zazhi = West China journal of stomatology","volume":"42 6","pages":"699-705"},"PeriodicalIF":0.0,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11669929/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142752716","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Immediate implantation of simple taper retentive implants in chronic apical infected teeth in the posterior region: a 5-year clinical observation.","authors":"Xu Zhang, Shibo Wei, Fei Yu, Hao Wu, Liangwei Cao, Ning Cao, Hongwu Wei, Shuigen Guo","doi":"10.7518/hxkq.2024.2024166","DOIUrl":"10.7518/hxkq.2024.2024166","url":null,"abstract":"<p><strong>Objectives: </strong>This study aims to evaluate the mid- and long-term clinical efficacies of simple taper retentive implants for immediate placement in chronic apical infected teeth in the posterior region.</p><p><strong>Methods: </strong>A total of 36 patients with 41 simple taper retentive implants were included in the study conducted. These patients underwent immediate implant treatment for teeth with chronic apical infection in the posterior region. The soft and hard tissues surrounding the implants were assessed and documented over a period of 5 years following the completion of crown restoration.</p><p><strong>Results: </strong>During the 5 years follow-up period, one implant failed with mobility, and the implant survival rate was 97.6%. The mean marginal bone resorption was (-0.74±1.03) mm from the immediate post-implant placement to the immediate post-crown restoration, and the difference in marginal bone heights between the two time points was statistically significant (<i>P</i><0.05). The mean marginal bone resorption was (-0.21±0.70) mm from the immediate post-crown restoration to the 5-year post-crown restoration, and the difference in marginal bone height between the two time points was not statistically significant (<i>P</i>>0.05). No significant difference (<i>P</i>>0.05) was observed in bone resorption between mesial and distal, maxillary and mandibular, different tooth positions, and different implant lengths. The soft tissue surrounding the implants remained healthy at the 5 years follow-up period, one implant exhibited peri-implantitis, and no mechanical complications were observed. The overall satisfaction of patients was good.</p><p><strong>Conclusions: </strong>Immediate placement of simple taper retentive implants after thorough debridement of chronic infected alveolar socket in the posterior region can achieve good mid- and long-term clinical outcomes after 5 years of loading. The soft and hard tissues were maintained in a steady state, which expanded the indications for immediate implantation.</p>","PeriodicalId":94028,"journal":{"name":"Hua xi kou qiang yi xue za zhi = Huaxi kouqiang yixue zazhi = West China journal of stomatology","volume":"42 6","pages":"764-772"},"PeriodicalIF":0.0,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11669932/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142752672","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A novel PAX9 variant in a Chinese family with non-syndromic oligodontia and genotype-phenotype analysis of PAX9variants.","authors":"Zhanyun Jin, Junjia Guo, Yunyun Yuan, Lingqiang Meng, Hui Li, Ya Zhao, Jiabao Ren, Yongping Ma, Zun-Sheng Xiao, Hong Zhang, Ling Yang, Chenyun Dou, Xiaoxue Wang, Jinmei Wang, Wenjing Shen","doi":"10.7518/hxkq.2024.2024090","DOIUrl":"10.7518/hxkq.2024.2024090","url":null,"abstract":"<p><strong>Objectives: </strong>This study aimed to identifyPAX9variants in non-syndromic tooth agenesis families of China, as well as to analyze the genotype⁃phenotype of non-syndromic tooth agenesis caused by PAX9variants, which can provide a basis for the genetic diagnosis of tooth agenesis.</p><p><strong>Methods: </strong>We collected the data of 44 patients with non-syndromic oligodontia who underwent treatment at Stomatological Hospital of Hebei Medical University between 2018 and 2023. Whole-exome sequencing was performed on the peripheral blood of the proband and its core family members, and the variants were verified by Sanger sequencing. Pathogenicity analysis and function prediction of the variants were performed using bioinformatics tools. The correlation between the genotype of PAX9 variant and its corresponding phenotype was examined by reviewing 55 publications retrieved from PubMed. The studies involved 232 tooth agenesis patients with PAX9 variants.</p><p><strong>Results: </strong>A novel PAX9 c.447delG (p.Pro150Argfs*62) and a reported PAX9 c.406C>T (p.Gln136*) were identified in two Chinese families. Through bioinformatics analysis and three-dimensional structural modeling, we postulated that the frameshift variant was pathogenic. The outcome was the premature cessation of PAX9 protein, which caused severe structural and functional deficiencies. Summarizing the PAX9 genotype-phenotype relationship revealed that patients carrying the PAX9 variant commonly led to loss of the second molars.</p><p><strong>Conclusions: </strong>We identified the novel PAX9 c.447delG (p.Pro150Argfs*62) in a Chinese family of non-syndromic oligodontia, expanding the known variant spectrum of PAX9. The most susceptible tooth position for PAX9 variants of tooth agenesis was the second molars and the deciduous molars during the deciduous dentition.</p>","PeriodicalId":94028,"journal":{"name":"Hua xi kou qiang yi xue za zhi = Huaxi kouqiang yixue zazhi = West China journal of stomatology","volume":"42 5","pages":"581-592"},"PeriodicalIF":0.0,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11493862/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142304650","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Clinical decision of centric relation.","authors":"Haiyang Yu, Zhebin Yan, Chenyang Xie, Qin Wu","doi":"10.7518/hxkq.2024.2024147","DOIUrl":"10.7518/hxkq.2024.2024147","url":null,"abstract":"<p><p>Centric relation (CR) was used in the complete dentures for edentulous jaws firstly. Then, CR was gradually applied in the clinical diagnosis and treatment of dentate jaws. Regarding the application of CR in dentate jaws, there are many doubts about its rationality. For instance, should CR be the core of diagnosis and treatment of temporomandibular disorders? Should CR be used as the jaw position of establishing occlusion in occlusal reconstruction? Should CR serve as the target jaw position in orthodontic treatment? Meanwhile, varieties of CR clinical applications are objective. According to the existing evidence, this paper summarizes the applicable conditions of several main clinical situations with little controversy. We preliminarily put forward the decision tree for the clinical application of CR, which can be used as a reference in clinical practice.</p>","PeriodicalId":94028,"journal":{"name":"Hua xi kou qiang yi xue za zhi = Huaxi kouqiang yixue zazhi = West China journal of stomatology","volume":"42 5","pages":"558-565"},"PeriodicalIF":0.0,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11493863/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142304668","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Osteogenic effect of poly(lactic-co-glycolic acid) microcapsules with different molecular weights encapsulating bone morphogenetic protein 2.","authors":"Lihong Yuan, Chen Chen, Yudi Ma, Ruizhen Liang","doi":"10.7518/hxkq.2024075","DOIUrl":"10.7518/hxkq.2024075","url":null,"abstract":"<p><strong>Objectives: </strong>This study aimed to explore the effects of bone morphogenetic protein 2 (BMP-2) encapsula-ted in poly(lactic-co-glycolic acid) (PLGA) microcapsules with different molecular weights on the osteogenic ability of osteoblasts.</p><p><strong>Methods: </strong>PLGA microcapsules with different molecular weights (12 000, 30 000) encapsulating BMP-2, were prepared using a dual-channel microinjection pump. The morphology and structure of the microcapsules were characterized by optical microscopy and scanning electron microscopy. The sustained-release performance of the microcapsules was characterized by phosphate buffered saline immersion method. The cell compatibility of the microcapsules was detected by the Calcein-AM/PI staining and CCK-8 method. The chemotactic effect of BMP-2-encapsulated microcapsules on MC3T3-E1 cells after 48 h of treatment was detected by the Transwell assay. The alkaline phosphatase activity assay and Alizarin Red S staining were used to characterize the effect of microcapsules on the osteogenic ability of MC3T3-E1 cells.</p><p><strong>Results: </strong>Both types of microcapsules with different molecular weights exhibited smooth surfaces, as well as uniform and good cell compatibility. The chemotactic effect of the 12 000 microcapsules was outstanding. The 30 000 microcapsules had a longer sustained-release time, and the initial burst release was reduced by approximately 25% compared with the 12 000 microcapsules. In addition, 30 000 microcapsules performed better in long-term osteogenesis induction than 12 000 microcapsules.</p><p><strong>Conclusions: </strong>In this study, the release of BMP-2 is regulated by adjusting the molecular weight of PLGA, and the results indicate that 30 000 microcapsules can better induce the long-term osteogenic ability of MC3T3-E1 cells.</p>","PeriodicalId":94028,"journal":{"name":"Hua xi kou qiang yi xue za zhi = Huaxi kouqiang yixue zazhi = West China journal of stomatology","volume":"42 5","pages":"572-580"},"PeriodicalIF":0.0,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11493858/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142304701","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Standardized treatment of oral cancer under the guidance of clinical practice guidelines of National Comprehensive Cancer Network.","authors":"Siqi Qiu, Yuehan Li, Fayu Liu","doi":"10.7518/hxkq.2024.2024168","DOIUrl":"10.7518/hxkq.2024.2024168","url":null,"abstract":"<p><p>Oral cancer represents a serious public health problem affecting oral and system health with a high global incidence. Treatment strategies for oral cancer vary in different disciplines and are likely to be limited to certain doctor's personal experience. While clinical practice guidelines are considered to enable doctors to determine the most appropriate and consistent treatment strategy according to the patient's situation. National Comprehensive Cancer Network (NCCN) clinical practice guidelines have become the most prevalent in global clinical oncology practice. This article mainly focuses on cases to discuss the normalized treatment strategy for oral cancer in different stages based on the NCCN Clinical Practice Guidelines in Oncology (NCCN Guidelines): Head and Neck Cancers, Version 3, 2024.</p>","PeriodicalId":94028,"journal":{"name":"Hua xi kou qiang yi xue za zhi = Huaxi kouqiang yixue zazhi = West China journal of stomatology","volume":"42 5","pages":"566-571"},"PeriodicalIF":0.0,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11493855/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142304704","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Localized juvenile spongiotic gingival hyperplasia: a case report.","authors":"Jingmei Yang, Xin Zeng, Yafei Wu, Huan Zhao","doi":"10.7518/hxkq.2024.2024023","DOIUrl":"10.7518/hxkq.2024.2024023","url":null,"abstract":"<p><p>Localized juvenile spongiotic gingival hyperplasia (LJSGH) is a kind of gingival hyperplasia with unique pathological manifestations. Its clinical manifestations are atypical, and the etiology and pathogenesis are unclear. No case report was reported in China. The diagnosis of this disease mainly relies on pathological testing, and recurrence may occur after treatment. The best treatment method still lacks medical evidence. This paper reports a case of LJSGH in a teenager and summarizes its clinical, pathological, and treatment through literature review. This work provides a reference for the diagnosis and treatment of this disease.</p>","PeriodicalId":94028,"journal":{"name":"Hua xi kou qiang yi xue za zhi = Huaxi kouqiang yixue zazhi = West China journal of stomatology","volume":"42 5","pages":"667-670"},"PeriodicalIF":0.0,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11493871/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142304699","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"One case of Rosai-Dorfman disease misdiagnosed as facial inflammation.","authors":"Yaqi Chen, Wen Ma, Gending Nie, Ming Li, Qingying Cui","doi":"10.7518/hxkq.2024.2023455","DOIUrl":"10.7518/hxkq.2024.2023455","url":null,"abstract":"<p><p>Rosai-Dorfman disease (RDD) is a rare non-Langerhans cell histiocytosis. The etiology and pathogenesis of RDD have not been fully explained, and its occurrence is even rarer in the maxillofacial region. This paper reported a patient who was first misdiagnosed as facial inflammation caused by oral disease and finally diagnosed as RDD. Clinical features, diagnosis, treatment, and prognosis were discussed based on the literature. This work provides reference for future diagnosis and differentiation of RDD in cheek.</p>","PeriodicalId":94028,"journal":{"name":"Hua xi kou qiang yi xue za zhi = Huaxi kouqiang yixue zazhi = West China journal of stomatology","volume":"42 5","pages":"671-674"},"PeriodicalIF":0.0,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11493861/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142304700","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}