The Chinese journal of dental research : the official journal of the Scientific Section of the Chinese Stomatological Association (CSA)最新文献_第7页

Quantitative Assessment of Dimensional Evaluation and Artefacts from Filling Materials with CBCT Using Standard Phantom Roots. 使用标准幻根的CBCT定量评价填充材料的尺寸评价和伪影。

The Chinese journal of dental research : the official journal of the Scientific Section of the Chinese Stomatological Association (CSA) Pub Date : 2023-06-23 DOI: 10.3290/j.cjdr.b4128007

Xiao Bo Chen, Zhe Jun Wang, Ya Shen, Andrea Esteves, He Liu, Gui Bin Huang, Xiao Yan Wang, Lin Yue, Markus Haapasalo

{"title":"Quantitative Assessment of Dimensional Evaluation and Artefacts from Filling Materials with CBCT Using Standard Phantom Roots.","authors":"Xiao Bo Chen, Zhe Jun Wang, Ya Shen, Andrea Esteves, He Liu, Gui Bin Huang, Xiao Yan Wang, Lin Yue, Markus Haapasalo","doi":"10.3290/j.cjdr.b4128007","DOIUrl":"https://doi.org/10.3290/j.cjdr.b4128007","url":null,"abstract":"Objective: To investigate the accuracy of dimensional evaluation and representation of artefacts generated by different gutta-percha (GP) cones with or without sealer with CBCT using a reproducible, standardised phantom root methodology.Methods: The reproducible artificial phantom roots with six root canal sizes from #25 to #50 and 0.04 taper were aligned according to the jaw curvature in a stone model for dimensional measurements. Each root was scanned while empty and filled with four types of filling materials. The specimens were scanned using the CS 9300 3D (Carestream Dental, Rochester, NY, USA) (at two different resolutions), 3D Accuitomo (J Morita, Kyoto, Japan) and NewTom VGi (Verona, Italy) CBCT systems. The hyperdense and hypodense axial slice artefacts from root canal sizes #40, #45 and #50 were recorded.Results: Dimensions were significantly smaller and more accurate with CS 9300/0.09 mm voxel size than with other protocols. The hypodense band was found mostly in the CS 9300 3D system with 0.18 mm voxel size, especially in the buccal-lingual (95%) and coronal (64%) sections. The 3D Accuitomo CBCT system showed the lowest presence of the hypodense band. Areas of both light and dark artefacts were significantly larger in the coronal third than in the apical and middle thirds.Conclusion: Artefacts in the coronal locations and in buccal-lingual sections were more evident in the CS 9300 3D system with a 0.18-mm voxel size.","PeriodicalId":74983,"journal":{"name":"The Chinese journal of dental research : the official journal of the Scientific Section of the Chinese Stomatological Association (CSA)","volume":"26 2","pages":"83-92"},"PeriodicalIF":0.0,"publicationDate":"2023-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9831752","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}

引用次数: 0

Effect of Premolar Extraction on the Upper Airway in Adult and Adolescent Orthodontic Patients: a Meta-analysis. 前磨牙拔除对成人和青少年正畸患者上呼吸道的影响:一项meta分析。

The Chinese journal of dental research : the official journal of the Scientific Section of the Chinese Stomatological Association (CSA) Pub Date : 2023-03-29 DOI: 10.3290/j.cjdr.b3978679

Run Zhi Guo, Lin Wei Li, Li Wen Zhang, Qian Yao Yu, Yi Ping Huang, Wei Ran Li

{"title":"Effect of Premolar Extraction on the Upper Airway in Adult and Adolescent Orthodontic Patients: a Meta-analysis.","authors":"Run Zhi Guo, Lin Wei Li, Li Wen Zhang, Qian Yao Yu, Yi Ping Huang, Wei Ran Li","doi":"10.3290/j.cjdr.b3978679","DOIUrl":"https://doi.org/10.3290/j.cjdr.b3978679","url":null,"abstract":"Objective: To analyse the effects of premolar extraction on the upper airway in adult and adolescent orthodontic patients using CBCT.Methods: The Embase, Web of Science, Cochrane Library and Medline (via PubMed) databases were searched with no language restrictions. Longitudinal studies in which CBCT was applied to assess the effects of tooth extraction on the upper airway were included in the analysis. Two authors performed the study selection, methodological quality assessment, data extraction and data synthesis independently.Results: A total of 12 studies were included, six of which were eligible for quantitative synthesis. In the adult group, the nasopharynx and oropharynx volume showed no significant change, and the minimum cross-sectional area of the upper airway demonstrated a non-significant decrease compared to the non-extraction group. In the adolescent group, the nasopharynx volume, oropharynx volume and minimum cross-sectional area of the upper airway increased in a non-significant manner.Conclusion: The currently available evidence indicates that tooth extraction does not increase the risk of airway collapse in adult and adolescent patients. The present findings should be interpreted with caution and evaluated in further high-quality studies.","PeriodicalId":74983,"journal":{"name":"The Chinese journal of dental research : the official journal of the Scientific Section of the Chinese Stomatological Association (CSA)","volume":"26 1","pages":"35-45"},"PeriodicalIF":0.0,"publicationDate":"2023-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9573168","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}

引用次数: 0

Editorial. 社论。

The Chinese journal of dental research : the official journal of the Scientific Section of the Chinese Stomatological Association (CSA) Pub Date : 2023-03-29 DOI: 10.3290/j.cjdr.b3993433

Chuan-Bin Guo

引用次数: 0

Interactions between Orthodontic Treatment and Gingival Tissue. 正畸治疗与牙龈组织的相互作用。

The Chinese journal of dental research : the official journal of the Scientific Section of the Chinese Stomatological Association (CSA) Pub Date : 2023-03-29 DOI: 10.3290/j.cjdr.b3978667

Yuan Liu, Chen Xi Li, Juan Nie, Cong Bo Mi, Yi Ming Li

引用次数: 0

Management of Crown-root Fracture with 180-degree Rotation Replantation: a Report of 2 Cases. 180度旋转复位治疗冠根骨折2例报告。

The Chinese journal of dental research : the official journal of the Scientific Section of the Chinese Stomatological Association (CSA) Pub Date : 2023-03-29 DOI: 10.3290/j.cjdr.b3978659

Lin Yang, Qiang Liu, Ming Wen Liu, Fan Gu, Zi Jun Wang, Yan Zuo, Yao Li, Bin Peng

{"title":"Management of Crown-root Fracture with 180-degree Rotation Replantation: a Report of 2 Cases.","authors":"Lin Yang, Qiang Liu, Ming Wen Liu, Fan Gu, Zi Jun Wang, Yan Zuo, Yao Li, Bin Peng","doi":"10.3290/j.cjdr.b3978659","DOIUrl":"https://doi.org/10.3290/j.cjdr.b3978659","url":null,"abstract":"Intentional replantation involves a combination of periodontics, endodontics, prosthodontics and oral surgery. Crown-root fracture management is still complicated nowadays. A fracture line extending longitudinally to the subgingival area and intruding bioogical width could affect infection control, gingival health and crown restoration. In the present study, we present two cases. Case 1 involved a 23-year-old man who presented at our hospital with crown-root fracture of the maxillary left central incisor. A radiographic image of the tooth revealed a fracture line under the alveolar crest. The fractured tooth was treated with intentional replantation with 180-degree rotation, root canal treatment and veneer restoration. The patient was followed up for 60 months. The replanted tooth functioned well, and no symptoms of resorption or ankylosis were observed by radiographic examination. Case 2 involved a 20-year-old woman who was referred to our hospital for crown-root fracture of her maxillary teeth. A radiographic examination revealed complicated crown-root fracture of the maxillary right lateral incisor and both maxillary central incisors. The central incisors were treated with intentional replantation with 180-degree rotation. At the 48-month follow-up, the fractured teeth were found to have regained normal function based on clinical and radiographic examination. Limited case reports are available on a long-term follow-up of intentional replantation with 180-degree rotation. These two cases, particularly case 2, presented optimal healing after 4 years with unideal crown-root ratios. This case report suggests that this old method of preserving teeth with crown-root fractures can be used as a last resort to save teeth owing to its timesaving and microinvasive procedure.","PeriodicalId":74983,"journal":{"name":"The Chinese journal of dental research : the official journal of the Scientific Section of the Chinese Stomatological Association (CSA)","volume":"26 1","pages":"53-58"},"PeriodicalIF":0.0,"publicationDate":"2023-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9197124","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}

引用次数: 0

Effect of Different Obturation Techniques on Sealer Penetration in Teeth with Artificial Internal Root Resorption: a Confocal Laser Microscope Analysis. 不同封闭技术对人工内根吸收牙体中封闭剂渗透的影响:共聚焦激光显微镜分析。

The Chinese journal of dental research : the official journal of the Scientific Section of the Chinese Stomatological Association (CSA) Pub Date : 2023-03-29 DOI: 10.3290/j.cjdr.b3978663

Zeliha Uğur Aydin, İrem Cansu Kara, Gamze Er Karaoğlu, Tülin Doğan Çankaya

{"title":"Effect of Different Obturation Techniques on Sealer Penetration in Teeth with Artificial Internal Root Resorption: a Confocal Laser Microscope Analysis.","authors":"Zeliha Uğur Aydin, İrem Cansu Kara, Gamze Er Karaoğlu, Tülin Doğan Çankaya","doi":"10.3290/j.cjdr.b3978663","DOIUrl":"https://doi.org/10.3290/j.cjdr.b3978663","url":null,"abstract":"Objective: To investigate the efficacy of different obturation techniques on sealer penetration in teeth with internal root resorption using confocal laser microscopy.Methods: An artificial internal resorption cavity (3 mm deep and 1.2 mm in diameter) was formed in the round-shaped root canals of 45 single-rooted teeth at a distance of 7 mm from the apex, then roots were instrumented (size 40/.06). The samples were divided into three groups (n = 15) according to the obturation technique: lateral compaction (LC), warm vertical compaction (WVC) and carrier-based (CB).Results: In the resorption regions, the sealer penetration depth in the CB and LC groups was significantly higher than that in the WVC group (P < 0.05).Conclusion: Within the limitations of this study, the penetration depth of the sealer in the resorption region was higher in the CB and LC groups as compared to that in the WVC group.","PeriodicalId":74983,"journal":{"name":"The Chinese journal of dental research : the official journal of the Scientific Section of the Chinese Stomatological Association (CSA)","volume":"26 1","pages":"47-52"},"PeriodicalIF":0.0,"publicationDate":"2023-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9573169","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}

引用次数: 0

Hydrogen Sulphide Alleviates Senescence of Human Periodontal Ligament Stem Cells by TRPV4 Channel Mediated Calcium Flux. 硫化氢通过TRPV4通道介导的钙通量缓解人牙周韧带干细胞衰老。

The Chinese journal of dental research : the official journal of the Scientific Section of the Chinese Stomatological Association (CSA) Pub Date : 2023-03-29 DOI: 10.3290/j.cjdr.b3978645

Yi Kun Zhou, Rui Li Yang, Xiao Mo Liu

{"title":"Hydrogen Sulphide Alleviates Senescence of Human Periodontal Ligament Stem Cells by TRPV4 Channel Mediated Calcium Flux.","authors":"Yi Kun Zhou, Rui Li Yang, Xiao Mo Liu","doi":"10.3290/j.cjdr.b3978645","DOIUrl":"https://doi.org/10.3290/j.cjdr.b3978645","url":null,"abstract":"Objective: To explore whether hydrogen sulphide (H2S) could protect human periodontal ligament stem cells (PDLSCs) from senescence and the possible underlying mechanisms.Methods: Cell cycle assay and Ki-67 assay were used to measure proliferation of PDLSCs. Real-time polymerase chain reaction (PCR) was used to measure cellular senescence-related p16 and p21. Calcium influx was detected by measurement of Ca2+ imaging. In addition, we analysed the possible mechanisms underlying H2S acting on PDLSCs by microarray.Results: The cell proliferation rate of aging PDLSCs decreased significantly. The expression of cellular senescence-related p16 and p21 significantly increased in aging PDLSCs. H2S donor (GYY4137) treatment increased the proliferation rate of senescence PDLSCs. Furthermore, the donor of H2S treatment effectively prevented cell cycle arrest of PDLSCs during the aging process and inhibited the expression of cellular senescence-related markers. Mechanically, H2S donor treatment could activate the calcium influx in PDLSCs. Moreover, pretreatment with TRPV4 inhibitors significantly attenuated the calcium influx induced by H2S donor treatment in PDLSCs. It also alleviated the protective effect of H2S on the senescence of PDLSCs.Conclusion: H2S alleviated the senescence of human PDLSCs by TRPV4 channel mediated calcium flux. These results provide a potential strategy to deal with cell aging and may facilitate cell therapy for oral diseases.","PeriodicalId":74983,"journal":{"name":"The Chinese journal of dental research : the official journal of the Scientific Section of the Chinese Stomatological Association (CSA)","volume":"26 1","pages":"19-27"},"PeriodicalIF":0.0,"publicationDate":"2023-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9203406","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}

引用次数: 0

Evaluation of Extension Type of Canalis Sinuosus in the Maxillary Anterior Region: a CBCT Study. 上颌前区鼻窦管延伸型的CBCT评价。

The Chinese journal of dental research : the official journal of the Scientific Section of the Chinese Stomatological Association (CSA) Pub Date : 2023-03-29 DOI: 10.3290/j.cjdr.b3978675

Leila Khojastepour, Fatemeh Akbarizadeh

{"title":"Evaluation of Extension Type of Canalis Sinuosus in the Maxillary Anterior Region: a CBCT Study.","authors":"Leila Khojastepour, Fatemeh Akbarizadeh","doi":"10.3290/j.cjdr.b3978675","DOIUrl":"https://doi.org/10.3290/j.cjdr.b3978675","url":null,"abstract":"Objective: To evaluate the extension of canalis sinuosus (CS) into the alveolar crest for surgical reference in the anterior maxilla.Methods: In this cross-sectional study, 485 CBCT images were evaluated in three orthogonal planes (axial, coronal and sagittal). The type of extension of CS into the alveolar ridge in the anterior maxilla was evaluated. The alveolar ridge was divided into four equal parts in a vertical and horizontal direction. In a vertical direction from apical to incisal and in a horizontal direction from labial to palatal, the four parts were designated as types 0, I, II and III, respectively. The extension of CS into the alveolar ridge was then traced.Results: CS was present in 380 subjects (78.35%), and the extension type was unilateral in 217 of them (57.11%) and bilateral in 163 of them (42.89%). There was no significant relationship between incidence of CS and sex. Regarding the distribution of vertical and horizontal types, type II (the third quadrant of the ridge from apical to incisal and from labial to palatal, respectively) was significantly more prevalent than other types.Conclusion: The most common location of CS into the alveolar ridge in both horizontal and vertical directions was type II (which is not close to the cortex). Awareness about the presence and possible locations of CS helps to reduce the risk of unjustifiable postoperative complications.","PeriodicalId":74983,"journal":{"name":"The Chinese journal of dental research : the official journal of the Scientific Section of the Chinese Stomatological Association (CSA)","volume":"26 1","pages":"29-34"},"PeriodicalIF":0.0,"publicationDate":"2023-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9203411","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}

引用次数: 0

Correlation Analysis between Self-perceived Oral Health and Self-perceived General Health among Adults in China. 中国成年人口腔健康自我感知与一般健康自我感知的相关分析

The Chinese journal of dental research : the official journal of the Scientific Section of the Chinese Stomatological Association (CSA) Pub Date : 2022-12-08 DOI: 10.3290/j.cjdr.b3628177

Yi Zhen Yu, Shuo Du, Min Ding, Zhi Ying Cui, Yi Liu, Yan Si

{"title":"Correlation Analysis between Self-perceived Oral Health and Self-perceived General Health among Adults in China.","authors":"Yi Zhen Yu, Shuo Du, Min Ding, Zhi Ying Cui, Yi Liu, Yan Si","doi":"10.3290/j.cjdr.b3628177","DOIUrl":"https://doi.org/10.3290/j.cjdr.b3628177","url":null,"abstract":"Objective: To analyse the correlation between self-perceived oral health (SPOH) and selfperceived general health (SPGH) and the influencing factors.Methods: In this study, we collected sociodemographic information and details about SPOH and SPGH status for Chinese adults (≥ 18 years), and a total of 2233 people were included. The data were analysed using SPSS software (IBM, Armonk, NY, USA) with a chi-square test and binary logistic regression.Results: In total, 43.4% of adults' self-perceived oral health was at a \"good\" level and 57.9% of adults' self-perceived general health was at a \"good\" level. The SPOH was correlated with SPGH (r = 0.593, P < 0.001). Good SPOH was associated with younger age, no dentures, no smoking, brushing teeth twice or more a day, periodontal health, no malocclusion and decayed, missing and filled teeth (DMFT) ≤ 12. Good SPGH was associated with younger age, higher educational level, no dentures, no smoking, brushing teeth twice or more a day, periodontal health, no malocclusion and DMFT ≤ 12.Conclusion: SPOH and SPGH are correlated with each other, and greater attention should be paid to oral health to promote general health.","PeriodicalId":74983,"journal":{"name":"The Chinese journal of dental research : the official journal of the Scientific Section of the Chinese Stomatological Association (CSA)","volume":"25 4","pages":"277-284"},"PeriodicalIF":0.0,"publicationDate":"2022-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10712345","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}

引用次数: 0

Prefabricating Implant-supported Interim Prosthesis from CBCT Scans: a Case Report of Digital Immediate Implant Restoration. 基于CBCT扫描的预制种植体支撑临时假体:数字即刻种植体修复一例报告。

The Chinese journal of dental research : the official journal of the Scientific Section of the Chinese Stomatological Association (CSA) Pub Date : 2022-12-08 DOI: 10.3290/j.cjdr.b3628215

Hong Ye Yang, Aihemaiti Muhetaer, Ya Ke Wang, Cui Huang

引用次数: 0