Journal of oral science最新文献_第9页

Radiological and histochemical study of bone regeneration using the costal cartilage in rats. 大鼠肋软骨骨再生的影像学和组织化学研究。

IF 1.9 4区医学

Journal of oral science Pub Date : 2023-03-30 DOI: 10.2334/josnusd.22-0447

Miho Higeuchi, Shunsuke Namaki, Akihiko Furukawa, Yoshiyuki Yonehara

{"title":"Radiological and histochemical study of bone regeneration using the costal cartilage in rats.","authors":"Miho Higeuchi, Shunsuke Namaki, Akihiko Furukawa, Yoshiyuki Yonehara","doi":"10.2334/josnusd.22-0447","DOIUrl":"https://doi.org/10.2334/josnusd.22-0447","url":null,"abstract":"Purpose: The purpose of this study was to conduct basic research on the possibility of using cartilage tissue for hard-tissue reconstruction and to observe morphological changes in the transition of the cartilage to bone.Methods: A 4-mm diameter bone defect was created in the right mandibular angle of rats. Cartilage, autologous bone, and artificial bone were grafted into the defect. Computed tomography (CT) was performed to measure the increase in bone volume. Further histological evaluation of the grafted site was performed.Results: At 12 weeks, CT show that bone formation in the costal cartilage group was comparable to that in the autogenous bone group. Histologically, in the artificial bone group, a clear boundary was observed between the existing bone and defect, whereas in the costal cartilage and autologous bone groups, laminar plate bone repair of the defect was observed.Conclusion: The findings in this study suggest that bone reconstruction achieved with cartilage grafting is almost equivalent to that with autogenous bone grafting and that bone reconstruction using cartilage is clinically feasible. In future, if regenerated cartilage is successfully applied clinically, bone reconstruction using regenerated cartilage may be feasible.","PeriodicalId":16646,"journal":{"name":"Journal of oral science","volume":null,"pages":null},"PeriodicalIF":1.9,"publicationDate":"2023-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9211434","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Thermal and volumetric assessment of endodontic filling techniques using infrared thermography and micro-CT. 利用红外热像仪和微型ct对牙髓充填技术进行热容量评估。

IF 1.9 4区医学

Journal of oral science Pub Date : 2023-01-11 DOI: 10.2334/josnusd.22-0285

Fernanda Clotilde M Suassuna, Débora Ketley M de Araújo, Ana Marly A M Amorim, Saulo Leonardo S Melo, Richard J Heck, Antonio Celso D Antonino, Patrícia M Bento, Diego Filipe B Silva, Daniela P de Melo

{"title":"Thermal and volumetric assessment of endodontic filling techniques using infrared thermography and micro-CT.","authors":"Fernanda Clotilde M Suassuna, Débora Ketley M de Araújo, Ana Marly A M Amorim, Saulo Leonardo S Melo, Richard J Heck, Antonio Celso D Antonino, Patrícia M Bento, Diego Filipe B Silva, Daniela P de Melo","doi":"10.2334/josnusd.22-0285","DOIUrl":"https://doi.org/10.2334/josnusd.22-0285","url":null,"abstract":"Purpose: To assess root temperature during filling techniques and quantify the volume of endodontic filling materials using infrared thermography (IT) and micro-computed tomography (micro-CT).Methods: Ninety premolars were divided into three groups: lateral condensation (LC), single cone (SC) and thermomechanical compaction (TMC). For thermal analysis, 45 teeth were assessed using a FLIR T650sc IT camera during filling techniques and 45 teeth were scanned using a Nikon micro-CT to assess gutta-percha, cement, and void volumes. Descriptive and inferential statistical analyses were performed (non-parametric Mann-Whitney test, Kruskal-Wallis test, and Friedman test with Tukey's bidirectional analysis of variance).Results: TMC showed the highest temperature increase at 15 s after the procedure and a significant temperature decrease at 45 s after its completion. TMC showed the largest volume of gutta-percha and LC the highest void volume.Conclusion: The temperature increase generated by gutta-percha endodontic filling techniques is within acceptable limits. A greater volume of endodontic cement was observed for the SL and LC filling techniques.","PeriodicalId":16646,"journal":{"name":"Journal of oral science","volume":null,"pages":null},"PeriodicalIF":1.9,"publicationDate":"2023-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10528454","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Comparison of the pull-out bond strength of endodontically treated anterior teeth with monolithic zirconia endocrown and post-and-core crown restorations. 单片氧化锆内冠与桩核冠修复前牙的拔牙结合强度比较。

IF 1.9 4区医学

Journal of oral science Pub Date : 2023-01-11 DOI: 10.2334/josnusd.22-0288

Durmus A Bozkurt, Emine B Buyukerkmen, Arslan Terlemez

{"title":"Comparison of the pull-out bond strength of endodontically treated anterior teeth with monolithic zirconia endocrown and post-and-core crown restorations.","authors":"Durmus A Bozkurt, Emine B Buyukerkmen, Arslan Terlemez","doi":"10.2334/josnusd.22-0288","DOIUrl":"https://doi.org/10.2334/josnusd.22-0288","url":null,"abstract":"Purpose: The purpose of this study was to assess the pull-out bond strength (PBS) of endodontically treated anterior teeth that had been restored with monolithic zirconia endocrowns using different extension depths (EDs) and post-and-core crowns after chewing simulation.Methods: Thirty-six maxillary central teeth were used (n = 12). Group I: Glass fiber post-and-core crown, Group II: Endocrown with 3-mm EDs, Group III: Endocrown with 5-mm EDs. Restorations were fabricated from monolithic zirconia blocks using a CAM (computer-aided manufacturing) device. For cementation, conventional resin luting agent (Multilink N) was used. All samples were aged with a chewing simulator and PBS tests were conducted at a speed of 1 mm/min using an electromechanical servo universal testing machine. The values were recorded in MPa by dividing the failure load by the bonding area. One-way ANOVA and the post-hoc Tukey test were used for statistical analysis (P = 0.05).Results: Group III demonstrated significantly greater PBS values than Groups I and II (P = 0.001). No significant difference was found between Groups I and II (P = 0.072).Conclusion: Increasing the ED of an endocrown influences the PBS of endodontically treated anterior teeth restored with monolithic zirconia endocrowns.","PeriodicalId":16646,"journal":{"name":"Journal of oral science","volume":null,"pages":null},"PeriodicalIF":1.9,"publicationDate":"2023-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10523090","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","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 automatic cleaning in analysis of occlusal force. 自动清洗在咬合力分析中的评价。

IF 1.9 4区医学

Journal of oral science Pub Date : 2023-01-11 DOI: 10.2334/josnusd.22-0252

Hiroshi Shiga, Marie Komino, Masaoki Yokoyama, Mako Sano, Kunihisa Nakajima, Yasunori Kikuchi

引用次数: 0

A rare case of solitary intraoral superficial angiomyxoma arising in the soft palate. 一例罕见的单发于软腭的口腔内浅表血管粘液瘤。

IF 1.9 4区医学

Journal of oral science Pub Date : 2023-01-11 DOI: 10.2334/josnusd.22-0334

Hideaki Hirai, Kou Kayamori, Rika Noji, Takeshi Kuroshima, Tohru Ikeda, Hiroyuki Harada

引用次数: 0

A comparative study of two chemical models for creating subsurface caries lesions on aprismatic and prismatic enamel. 两种化学模型对柱状牙釉质和柱状牙釉质表面下龋形成的比较研究。

IF 1.9 4区医学

Journal of oral science Pub Date : 2023-01-11 DOI: 10.2334/josnusd.22-0311

Pamela Y W Wong, Suh Ling Lim, Samuel T Y Loi, May Lei Mei, Kai Chun Li, Shafiq Aziz, Manikandan Ekambaram

{"title":"A comparative study of two chemical models for creating subsurface caries lesions on aprismatic and prismatic enamel.","authors":"Pamela Y W Wong, Suh Ling Lim, Samuel T Y Loi, May Lei Mei, Kai Chun Li, Shafiq Aziz, Manikandan Ekambaram","doi":"10.2334/josnusd.22-0311","DOIUrl":"https://doi.org/10.2334/josnusd.22-0311","url":null,"abstract":"Purpose: To investigate the mineral density and lesion depth of artificial caries lesions on aprismatic enamel and prismatic enamel created by lactic acid and acetic acid buffers.Methods: Forty bovine enamel blocks were allocated to: aprismatic enamel (Group A) and prismatic enamel (Group C) in acetic acid buffer for 192 h and aprismatic enamel (Group B) and prismatic enamel (Group D) in lactic acid buffer for 96 h. The mineral loss and lesion depth were measured using micro-computed tomography.Results: A significant difference (P = 0.01) was observed in the mineral loss (%) in the lesions on aprismatic enamel and prismatic enamel treated with lactic acid buffer while no significant difference (P = 0.51) was observed in the mineral loss (%) in the lesions on aprismatic enamel and prismatic enamel treated with acetic acid buffer. No significant difference was noted in the mean lesion depth of lesions on aprismatic enamel and prismatic enamel treated with acetic acid and lactic acid buffers (P > 0.05).Conclusion: Aprismatic enamel and prismatic enamel have similar mineral loss in acetic acid while prismatic enamel showed more mineral loss compared to aprismatic enamel in lactic acid.","PeriodicalId":16646,"journal":{"name":"Journal of oral science","volume":null,"pages":null},"PeriodicalIF":1.9,"publicationDate":"2023-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10522809","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Association of self-rated chewing function and oral health status with metabolic syndrome. 自评咀嚼功能和口腔健康状况与代谢综合征的关系。

IF 1.9 4区医学

Journal of oral science Pub Date : 2023-01-11 DOI: 10.2334/josnusd.22-0229

Mizuki Saito, Yoshihiro Shimazaki, Saori Yoshii, Hideo Takeyama

{"title":"Association of self-rated chewing function and oral health status with metabolic syndrome.","authors":"Mizuki Saito, Yoshihiro Shimazaki, Saori Yoshii, Hideo Takeyama","doi":"10.2334/josnusd.22-0229","DOIUrl":"https://doi.org/10.2334/josnusd.22-0229","url":null,"abstract":"Purpose: The study aimed to examine the association of self-rated chewing function, the number of teeth and periodontal status with metabolic syndrome.Methods: The participants were 11,119 adults aged 40-74 years who underwent specific health checkups, including an oral health examination, in 2018 in Japan. This study used the standard questions of the specific health checkups to obtain information on self-rated chewing function. A multinomial logistic regression analysis was performed with metabolic syndrome status as the dependent variable, and age, sex, lifestyle questions, self-rated chewing function, number of teeth, and periodontal status as the independent variables.Results: Number of teeth and periodontal status were significantly associated with metabolic syndrome after adjusting for confounding variables. Self-rated chewing function was significantly associated with metabolic syndrome in the crude analysis, but not after adjustment for confounding variables. Both number of teeth and periodontal status were significantly associated with self-rated chewing function.Conclusion: There was no significant direct association between self-rated chewing function and metabolic syndrome. Self-rated chewing function may be an indicator of poor oral condition that links to metabolic syndrome.","PeriodicalId":16646,"journal":{"name":"Journal of oral science","volume":null,"pages":null},"PeriodicalIF":1.9,"publicationDate":"2023-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10594236","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Custom-made radiotherapy prosthesis for external and internal radiotherapy in a patient with lip cancer. 定制放疗假体用于唇部癌患者的外、内放疗。

IF 1.9 4区医学

Journal of oral science Pub Date : 2023-01-11 DOI: 10.2334/josnusd.22-0306

Jiangyu Wang, Mai Murase, Cheewin Towithelertkul, Hiroko Tani, Yuka I Sumita

引用次数: 0

Cell viability and physicochemical effects of different concentrations of bismuth trioxide in a mineral trioxide aggregate cement. 不同浓度的三氧化二铋在矿物三氧化二骨料水泥中的细胞活力和物理化学效应。

IF 1.9 4区医学

Journal of oral science Pub Date : 2023-01-11 DOI: 10.2334/josnusd.22-0139

Karla Padrón-Alvarado, Laura A García-Mendoza, Juana P Ramírez-Ortega, Jacqueline A Rodríguez-Chavéz, María D L A Moyaho-Bernal, Juan A Arreguín-Cano, Lia A Hoz-Rodríguez, Ana Wintergerst, Jesús A Arenas-Alatorre, Abigailt Flores-Ledesma

{"title":"Cell viability and physicochemical effects of different concentrations of bismuth trioxide in a mineral trioxide aggregate cement.","authors":"Karla Padrón-Alvarado, Laura A García-Mendoza, Juana P Ramírez-Ortega, Jacqueline A Rodríguez-Chavéz, María D L A Moyaho-Bernal, Juan A Arreguín-Cano, Lia A Hoz-Rodríguez, Ana Wintergerst, Jesús A Arenas-Alatorre, Abigailt Flores-Ledesma","doi":"10.2334/josnusd.22-0139","DOIUrl":"https://doi.org/10.2334/josnusd.22-0139","url":null,"abstract":"Purpose: To evaluate the effect of three concentrations of bismuth trioxide (Bi2O3) on the biological and physicochemical properties of an experimental mineral trioxide aggregate-type (MTA-type) cement at different time points.Methods: Three experimental groups with white Portland cement containing 15, 20, or 25 wt% of Bi2O3 were assessed. Cellular proliferation in human periodontal ligament fibroblasts was evaluated with an MTT assay. Radiopacity, dimensional stability, pH, and compressive strength were evaluated at different time points.Results: Bismuth trioxide induced cell proliferation in the Bi15 and Bi25 groups in a time-dependent manner; pH was similar in all groups. Compressive strength was associated with time and bismuth concentration. Bi25 had significantly contracted at day 7 and expanded at day 14 (ANOVA P < 0.05, post hoc Tukey test P < 0.05).Conclusion: A higher Bi2O3 concentration had a negative effect on the physical properties of the cement at all time points.","PeriodicalId":16646,"journal":{"name":"Journal of oral science","volume":null,"pages":null},"PeriodicalIF":1.9,"publicationDate":"2023-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10514289","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Aging resistance of highly translucent zirconia ceramics with rapid sintering. 快速烧结高半透明氧化锆陶瓷的耐老化性能。

IF 1.9 4区医学

Journal of oral science Pub Date : 2023-01-11 DOI: 10.2334/josnusd.22-0264

Min Yan, Shinn-Jyh Ding, Cheng-Wei Lin, Cian-Li Wei, Yi-Wen Huang, Chun-Chuan Yang

{"title":"Aging resistance of highly translucent zirconia ceramics with rapid sintering.","authors":"Min Yan, Shinn-Jyh Ding, Cheng-Wei Lin, Cian-Li Wei, Yi-Wen Huang, Chun-Chuan Yang","doi":"10.2334/josnusd.22-0264","DOIUrl":"https://doi.org/10.2334/josnusd.22-0264","url":null,"abstract":"Purpose: Rapid sintering technology has become one of the most direct methods for shortening the manufacturing time of zirconia restorations. This study aimed to explore the aging resistance of rapid-sintered 5 mol% yttria-partially-stabilized zirconia (5Y-PSZ).Methods: Specimens were made from two types of 5Y-PSZ material and subjected to rapid sintering (RS) and conventional sintering (CS). After in vitro aging for 5 h, morphology observation, grain size measurement, and phase composition analysis were performed. The mechanical properties were evaluated by biaxial, three-point flexural tests, and the Vickers microhardness test. Results were analyzed by 3-way ANOVA.Results: Both the RS group and the CS group had a dense microstructure. The tested zirconia ceramics had different grain sizes, which were affected by the interaction between the sintering method and aging. Both groups revealed the same characteristic peaks of the cubic phase after aging. Regardless of the sintering method used, there was no significant difference in the mechanical properties of the tested zirconia before and after aging.Conclusion: The rapid-sintered 5Y-PSZ materials had a microstructure, phase composition and mechanical properties similar to those of conventional sintered materials. The characteristics of the materials prepared using the two sintering methods did not change significantly after aging.","PeriodicalId":16646,"journal":{"name":"Journal of oral science","volume":null,"pages":null},"PeriodicalIF":1.9,"publicationDate":"2023-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10576574","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3