The Journal of the American College of Dentists最新文献_第2页

Guided Endodontics in Calcified Root Canals 钙化根管的引导牙髓学研究

The Journal of the American College of Dentists Pub Date : 2022-12-14 DOI: 10.12974/2311-8695.2022.10.04

Maria de Lourdes Vieira Frujeri, Bruna Mirelli DE LIMA DA ROCHA, Leandro Henrique BALARINE MELO

{"title":"Guided Endodontics in Calcified Root Canals","authors":"Maria de Lourdes Vieira Frujeri, Bruna Mirelli DE LIMA DA ROCHA, Leandro Henrique BALARINE MELO","doi":"10.12974/2311-8695.2022.10.04","DOIUrl":"https://doi.org/10.12974/2311-8695.2022.10.04","url":null,"abstract":"Introduction: Endoguide is a device that has significantly aids the treatment of calcified root canals. This device involves modern technologies as 3D printing and computed tomography, which increase the accuracy of dental work. Guided endodontics has currently been emphasized because it facilitates more complex endodontic treatments, such as partial or total obliteration of the root canals precluding the conventional endodontic treatment. This method has demonstrated high percentages of safety for both patient and dentist. It is a fast endodontic access system that prevents perforations, unnecessary removal of dentin and tooth structure. This treatment method is more effective than conventional methods for locating calcified root canals due to its accuracy, speed of time and precision of direction. \u0000Objective: To review the current literature on Endoguide in calcified root canals, analyze its practice, advantages, disadvantages, indications and limitations. \u0000Material and Methods: The study was conducted on 20 papers in Portuguese and English from the year 2016 to April 2022, and a classic article from year 1995, searched in the databases PubMed, Google Scholar and Bireme. The following keywords were used: Calcified canal, Guided endodontics, Endodontic access, Endoguide. \u0000Results: This technique showed greater predictability in calcified canals, reducing the risk of perforations and allowing faster and more efficient access, with many advantages, except for its high cost. \u0000Conclusion: Based on this literature review, it can be suggested that the Endoguide technique in calcified canals provides great benefits to both dentist and patient, such as reduction of clinical time, agility and confidence in treatment, reduced risk of accidents and complications such as perforations and unnecessary dentin removal.","PeriodicalId":76664,"journal":{"name":"The Journal of the American College of Dentists","volume":"30 5 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78896481","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

Microtensile Bond Strength of Total-Etch and Self-Etch Universal Adhesives Containing 10-MDP: A Systematic Review 含10-MDP的全蚀刻和自蚀刻通用胶粘剂的微拉伸粘结强度:系统综述

The Journal of the American College of Dentists Pub Date : 2022-11-28 DOI: 10.12974/2311-8695.2022.10.03

I. H. Ismail, N. Razak, N. Ramzi, M.Y.P. Mohd Yusof

{"title":"Microtensile Bond Strength of Total-Etch and Self-Etch Universal Adhesives Containing 10-MDP: A Systematic Review","authors":"I. H. Ismail, N. Razak, N. Ramzi, M.Y.P. Mohd Yusof","doi":"10.12974/2311-8695.2022.10.03","DOIUrl":"https://doi.org/10.12974/2311-8695.2022.10.03","url":null,"abstract":"A systematic review was performed to compare the human dentin microtensile bond strength of universal adhesives with 10-MDP when used as total-etch and self-etch strategies. Literature search was done on October 2019 without limitations on the language of publication, in four databases: PubMed, Web of Science, Scopus, and EBSCO. Additional manual search was done for the grey literature articles: OpenGrey and OpenThesis. Studies that evaluated the dentin bond strength of universal adhesives with 10-MDP using total-etch and self-etch strategy from the year 2000 up till October 2019 were included. The initial search resulted in 5121 references: 2234 from PubMed, 1814 from Scopus, 516 from Web of Science, 553 from EBSCO and 4 from OpenThesis. After full text analysis, 30 references were included in this systematic review. Seven different universal adhesives with 10-MDP were evaluated for dentin microtensile bond strength comparing total-etch and self-etch strategies: Single Bond Universal/Scotchbond Universal (3M ESPE), All Bond Universal (Bisco), Clearfil Universal Bond (Kuraray), G-Premio Bond (GC Corp), Tetric Bond Universal (Ivoclar Vivadent), Ambar Universal (FGM) and One Coat 7 Universal (Coltene). The total-etch strategy improved the dentine microtensile bond strength compared to self-etch strategy for all universal adhesives when stored in all three conditions: 24h, thermocycling and long-term immersion according to ISO (TS 11405:2015(E)). The evidence suggests that microtensile bond strength of universal adhesives containing 10-MDP may be improved utilizing total-etch strategy compared to self-etch strategy. This study provides valuable information on the importance of appropriate dentin adhesives strategy that affect success rate of restorations, which helps clinicians to make informed decisions on the strategy to be used during restorations in practice.","PeriodicalId":76664,"journal":{"name":"The Journal of the American College of Dentists","volume":"77 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83911662","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

The use of Antibiotics in Paediatric Dentistry: A Revision of Current Recommendations 儿科牙科抗生素的使用:对当前建议的修订

The Journal of the American College of Dentists Pub Date : 2022-10-28 DOI: 10.12974/2311-8695.2022.10.2

Paula Piekoszewska-Ziętek

引用次数: 0

Corrosion Behavior of Dental Alloys Under Artificial Saliva Solution with Different pH Values 口腔合金在不同pH值人工唾液溶液中的腐蚀行为

The Journal of the American College of Dentists Pub Date : 2022-06-14 DOI: 10.12974/2311-8695.2022.10.1

Yen-Hao Chang, Yan-ting Pan, C. Chao, Huey-Er Lee, Ju-Hui Wu

引用次数: 0

Wear Patterns of Adhesive Interfaces over Different Materials 不同材料上粘接界面的磨损模式

The Journal of the American College of Dentists Pub Date : 2021-12-30 DOI: 10.12974/2311-8695.2021.09.5

A. Comba, A. Baldi, M. Bonito, E. Blanc, V. Notaro, M. Alovisi, D. Pasqualini, E. Berutti, N. Scotti

{"title":"Wear Patterns of Adhesive Interfaces over Different Materials","authors":"A. Comba, A. Baldi, M. Bonito, E. Blanc, V. Notaro, M. Alovisi, D. Pasqualini, E. Berutti, N. Scotti","doi":"10.12974/2311-8695.2021.09.5","DOIUrl":"https://doi.org/10.12974/2311-8695.2021.09.5","url":null,"abstract":"Purpose: The aim of this in vitro study was to investigate differences in surface wear of enamel-material and dentin-material bonded interfaces obtained from upper molars samples and subjected to cycling occlusal load. \u0000Methods: Forty-eight flat specimens of enamel-material and dentin-material bonded interfaces were prepared using different restorative materials with both CAD-CAM techniques and direct techniques. After the bonding and cementation procedures specimens were tested with a chewing machine with a stainless-steel ball on flat sliding contact (20N loads, 50.000 cycles). Wear analysis and comparison of the enamel or dentin substrates and the three restorative materials was performed using a 3D profilometer and analyzed with ANOVA test and post-hoc comparison procedures. Finally worn surfaces were examined with optical microscopy. \u0000Results: Statistical analysis after simulated chewing cycles identified a significant influence of the factor “substrate” (p<0.05) and of the factor “restorative material” (p<0.05). The enamel results in being more wear resistant than dentin, and also more resistant than all the restorative materials tested. Considering the materials, the most severe wear loss was observed with micro-hybrid composite paste. CAD-CAM materials showed a wear rate significantly better both in association with enamel and dentin. An interesting wear pattern was found at the bonded interface level and the oval shapes obtained from the profilometer images underlined a repetitive wear pattern with the central zone more consumed and decreasing depth moving towards the perimeter. Initials signs of cracks were showed in enamel interfaces at the optical microscopy analysis. \u0000Conclusions: Both the dental substrate and the restorative material significantly affect the wear behavior of a toothmaterial interface after cyclic fatigue. Thus, the initial null hypotheses were rejected.","PeriodicalId":76664,"journal":{"name":"The Journal of the American College of Dentists","volume":"117 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73545159","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 Etching Modes on Shear Bond Strength of Universal Adhesives to Enamel 不同蚀刻方式对通用胶粘剂与珐琅剪切结合强度的影响

The Journal of the American College of Dentists Pub Date : 2021-12-10 DOI: 10.12974/2311-8695.2021.09.4

N. Haider, R. Nagpal, U. Singh, M. Umar, Nida Mehmood

{"title":"Effect of Different Etching Modes on Shear Bond Strength of Universal Adhesives to Enamel","authors":"N. Haider, R. Nagpal, U. Singh, M. Umar, Nida Mehmood","doi":"10.12974/2311-8695.2021.09.4","DOIUrl":"https://doi.org/10.12974/2311-8695.2021.09.4","url":null,"abstract":"Aim: To evaluate the effect of different etching modes on the bonding efficacy of two universal adhesives to enamel. \u0000Materials and method: The study was performed in fifty five extracted human molar teeth. For shear bond strength testing, flat buccal surfaces were prepared. Teeth were randomly divided into five experimental groups according to two universal adhesives Single Bond Universal (3M ESPE, U.S.A) and Tetric N-Bond Universal (IvoclarVivadent) used in different etching modes i.e etch-and-rinse and self-etch mode and one control group of etch & rinse adhesive (Adper Single bond-2). Teeth were mounted in self-cure acrylic resin and composite restorations were placed in all the samples after application of adhesives according to the manufacturer’s instructions. Ten samples from each group were subjected to shear bond strength evaluation. Additionally one sample per group was subjected to scanning electron microscopic analysis for observing resin-enamel interfacial adaptation. \u0000Statistical analysis: Data collected was subjected to statistical analysis using one –way ANOVA and post-hoc tukey’s test at a significant level of p<0.05. \u0000Results: Enamel bond strength was significantly better in etch-and-rinse mode than the self etch mode for both Single Bond Universal (gp 2 & 3; p=0.017) and Tetric N-Bond Universal adhesives (gp 4 & 5; p=0.046) respectively. \u0000Conclusion: Phosphoric acid etching of enamel prior to the application of a mild universal adhesive is an advisable strategy for optimizing bonding.","PeriodicalId":76664,"journal":{"name":"The Journal of the American College of Dentists","volume":"41 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90659487","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

Investigation of Changes in Dental Pulp Tissue in Rats with Bilateral Ovariectomy by Histopathological Methods 双侧卵巢切除大鼠牙髓组织变化的组织病理学研究

The Journal of the American College of Dentists Pub Date : 2021-12-09 DOI: 10.12974/2311-8695.2021.09.3

E. Bakır, Şeyhmus Bakır, B. Deveci, F. Şahin, F. Aşır, E. Deveci

{"title":"Investigation of Changes in Dental Pulp Tissue in Rats with Bilateral Ovariectomy by Histopathological Methods","authors":"E. Bakır, Şeyhmus Bakır, B. Deveci, F. Şahin, F. Aşır, E. Deveci","doi":"10.12974/2311-8695.2021.09.3","DOIUrl":"https://doi.org/10.12974/2311-8695.2021.09.3","url":null,"abstract":"In this study, we aimed to investigate the histopathological changes on 14th and 28th days in the dental pulp of ovariectomized rats. Twenty 12-week-old 21 female Sprague Dawleys were divided into 3 groups. Group 1: No procedure was applied to the animals. All teeth were excised at the end of the experiment (at the 14th day of experiment). Group 2: The abdomen was opened and the ovary tied with 3/0 silk sutures to block blood supply. The ovaries were placed in its original position. Teeth of ovariectomized rats were excised at the 14th day of experiment. Group 3: Similar procedure was applied as in Group 2. The teeth were removed on 28th days of experiment. The dental tissues taken after the experiment were processed for routine paraffin wax tissue preparation. Hematoxylin-Eosin staining was applied to sections of 4 μm thickness. As a result, when compared to the dental pulp of control group, degenerated dental pulp tissue, vascular dilatation and pyknotic osteoblast cells were observed in ovariectomized rats, however the pathological intesity was higher in ovariectomized rats for 28 days than ovariectomized rats for 14 days.","PeriodicalId":76664,"journal":{"name":"The Journal of the American College of Dentists","volume":"11 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78698056","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: 1

Evaluation of Impacted Lower Third Molars Using Cone Beam Computed Tomography 锥形束计算机断层扫描对下颌第三磨牙阻生的评价

The Journal of the American College of Dentists Pub Date : 2021-06-02 DOI: 10.12974/2311-8695.2021.09.1

José Raimundo Soares de Carvalho, Josélia da Silva Leite, Rudyard dos Santos Oliveira

{"title":"Evaluation of Impacted Lower Third Molars Using Cone Beam Computed Tomography","authors":"José Raimundo Soares de Carvalho, Josélia da Silva Leite, Rudyard dos Santos Oliveira","doi":"10.12974/2311-8695.2021.09.1","DOIUrl":"https://doi.org/10.12974/2311-8695.2021.09.1","url":null,"abstract":"The aim of the study was to define the prevalence of impacted lower third molars using cone beam computed tomography and to classify according to Winter, Pell and Gregory and Maglione. The sample consisted of 250 CBCT exams. The evaluation of the selected images was performed using CS 3D imaging software using axial, cross-section and panoramic reconstruction sections. Data collection was performed by filling out the forms containing the classifications of Winter, Pell and Gregory and Maglione. Data analysis was performed through the distribution of frequencies (absolute and relative) associated with the construction of 95% confidence intervals of proportions. Of the 250 tomography exams analyzed, 113 (45.2%) were male and 137 (54.8%) were female. The positions and differences between the most frequent sides according to the Winter, Pell & Gregory and Maglione classification, respectively, were: Mesioangular - 29.8% (95% CI: 25.8% -33.8%), right side (30.4 %), left side (29.2%); Class II - 31.2% (95% CI: 27.1% -35.3%); position A, right side (30.4%) left side (32.0%); Class 1A - 39.8% (95% CI: 35.5% -44.1%), right side (40.0%), left side (39.6%). Thus, there was a higher prevalence in the mesioangular position according to the Winter classification and, in relation to the Pell and Gregory classification, the class II / A position; while, according to Maglione's classification, the most prevalent position is Class 1A. ","PeriodicalId":76664,"journal":{"name":"The Journal of the American College of Dentists","volume":"185 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72733145","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

Influence of Polymerization with Argon Laser and LED on Shear Resistance of Adhesive Systems 氩激光和LED聚合对胶粘剂体系抗剪切性能的影响

The Journal of the American College of Dentists Pub Date : 2021-06-02 DOI: 10.12974/2311-8695.2021.09.2

Téssia Richelly Nóbrega Borja de Melo, M. Youssef

{"title":"Influence of Polymerization with Argon Laser and LED on Shear Resistance of Adhesive Systems","authors":"Téssia Richelly Nóbrega Borja de Melo, M. Youssef","doi":"10.12974/2311-8695.2021.09.2","DOIUrl":"https://doi.org/10.12974/2311-8695.2021.09.2","url":null,"abstract":"objective: The aim of this work was to evaluate the shear strength of ceramic brackets as a function of two adhesive systems (kit TransbondTM XT; TransbondTM Plus Self Etching Primer/ 3M Unitek®) and two light sources (LED and Argon Laser).\u0000Method: 28 maxillary premolars were used, divided into two groups (n=14), according to the adhesive system and light source. The teeth were enclosed in ¾-inch PVC tubes, with special stone plaster, perpendicular to the ground and tubes. Brackets were fixed over the exposed crowns. The teeth were stored at 37ºC for 24 hours and then submitted to 1,000 thermal cycles with 30 seconds in each bath (5°C and 55°C). The shear test was performed on a Shimadzu® testing machine at a speed of 0.5mm/min. Enamel surfaces were qualified using the ARI (Adhesive Remaining Index). Data were submitted to statistical analyzes ANOVA, Tukey and Kruskal-Wallis (p<0.05).\u0000Results: the conventional TransbondTM XT kit adhesive system was superior to the self-etching system. LED and Argon Laser showed similar behaviors.\u0000Conclusion: Argon laser did not influence shear strength or ARI scores. ","PeriodicalId":76664,"journal":{"name":"The Journal of the American College of Dentists","volume":"89 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89879090","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

Precautions and Recommendations for Dental Care During the COVID-19 Pandemic COVID-19大流行期间牙科保健的注意事项和建议

The Journal of the American College of Dentists Pub Date : 2020-10-19 DOI: 10.12974/2311-8695.2020.08.7

T. Melo, P. Costa, R. Medeiros, J. Araújo-Filho, A. Júnior

引用次数: 0