Online Journal of Dentistry & Oral Health最新文献_第9页

Is it time to Stop Layering Ceramics? 是时候停止分层陶瓷了吗?

Online Journal of Dentistry & Oral Health Pub Date : 2018-12-13 DOI: 10.33552/OJDOH.2018.01.000517

A. Abyad

引用次数: 0

Comparison of Working Length Determination in Teeth with Vital Pulps with Digital Radiographs and Four Electronic Apex Locators. An In Vivo Study 数字x线片与四种电子牙尖定位仪测定活髓牙工作长度的比较。一项体内研究

Online Journal of Dentistry & Oral Health Pub Date : 2018-12-12 DOI: 10.33552/OJDOH.2018.01.000516

J. Vieyra

{"title":"Comparison of Working Length Determination in Teeth with Vital Pulps with Digital Radiographs and Four Electronic Apex Locators. An In Vivo Study","authors":"J. Vieyra","doi":"10.33552/OJDOH.2018.01.000516","DOIUrl":"https://doi.org/10.33552/OJDOH.2018.01.000516","url":null,"abstract":"Introduction: The aim of this study was to evaluate in vivo the accuracy and predictability of four EALs for determining working length as compared to radiographs: RootZX, Apex ID, Joypex 5 and Propex Pixi. Methods: One hundred and twenty patients (247 canals) contributed in the study. The measurements obtained by the four EALs and radiographs relative to the actual location of the AC were compared using a paired samples t test, X2 test. Results: For anterior teeth, EALs and radiographs located the minor foramen 87%, 75%, 75%, 87% and 62% of the time, respectively. For premolar teeth, EALs and radiographs located the minor foramen 92.85%, 85.71%, 78.57%, 85.71% and 57.14% of the time, respectively. For molar teeth, the Root ZX, EALs and radiographs located the minor foramen 90%, 85%, 80%, 85% and 70% of the time, respectively. There was no statistically significant difference between the four EALs but there was a difference bet the EALs and radiographs. p= 0.05. Conclusion: Under clinical conditions the EALs identified the apical constriction (minor foramen) with high degree of accuracy. EAL were more accurate, compared to radiographs with the potential to greatly reduce the risk of instrumenting and filling beyond the apical foramen.","PeriodicalId":361768,"journal":{"name":"Online Journal of Dentistry & Oral Health","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125419238","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

Peer Reviewed Open Access Academic Journals Versus Conventional Paper Based Formats–What’s the Difference? 同行评议的开放获取学术期刊与传统的基于论文的格式有什么区别?

Online Journal of Dentistry & Oral Health Pub Date : 2018-11-21 DOI: 10.33552/OJDOH.2018.01.000515

S. Vinayak

引用次数: 0

Oral Health and Public Health Systems in Europe 欧洲的口腔健康和公共卫生系统

Online Journal of Dentistry & Oral Health Pub Date : 2018-11-20 DOI: 10.33552/ojdoh.2018.01.000514

Ambarkova Vesna

引用次数: 1

Digital Smile Design, Guided Surgery, Delivering Facial Driven Implant Treatment in A Failed Dentition: Case Reports 数字微笑设计，引导手术，提供面部驱动种植治疗失败牙列:案例报告

Online Journal of Dentistry & Oral Health Pub Date : 2018-11-19 DOI: 10.33552/OJDOH.2018.01.000513

K. G. Haider

{"title":"Digital Smile Design, Guided Surgery, Delivering Facial Driven Implant Treatment in A Failed Dentition: Case Reports","authors":"K. G. Haider","doi":"10.33552/OJDOH.2018.01.000513","DOIUrl":"https://doi.org/10.33552/OJDOH.2018.01.000513","url":null,"abstract":"The Digital Smile Design (DSD) digital implant treatment planning solutions allow for predictable prosthetic results, DSD helps in visualizing the end product through a blue print. The transition of patients from failing dentition to complete-arch implant rehabilitation often means that the patient is rendered edentulous and has to wear a removable complete denture for a period of time. Many patients find this unacceptable. With the immediate loading concept, it is possible to offer our patients a third dentition on the day of extractions. Today, many people suffering failed dentition, moving towards edentulism, getting back their smile with a fixed prosthesis could be priceless. This treatment provides a fixed interim prosthesis use throughout the rehabilitation process, allowing patient comfort and prosthodontic control. The prosthesis is supported by the immediate implants that we placed which are all on the same day. The implants and prostheses were functioning successfully after surgery. Combination of digital smile planning and guided surgery helps to make a complex case which is carefully planned simpler and predictable in their implant’s placement and delivery of the prosthesis within the same day. Modern implant-based dentistry has delivered something to the edentulous patient that conventional dentures have never quite managed by comparison-substantially increased quality of life. A prosthesis held solidly in place by dental plants not only provides the comfort and security a patient is likely to be missing with removable dentures, it also preserves bone. Add to the equation emotional benefits -such as improved self-image, increased selfconfidence and a renewed social life-and an implant-based restoration becomes the clear choice.","PeriodicalId":361768,"journal":{"name":"Online Journal of Dentistry & Oral Health","volume":"96 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122568714","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 Shoulder and Chamfer Margin Design on the Stress Distribution Pattern in Different All Ceramic Restorations by Three-Dimensional Finite Element Analysis 基于三维有限元分析的肩部和倒角边缘设计对不同全陶瓷修复体应力分布规律的影响

Online Journal of Dentistry & Oral Health Pub Date : 2018-11-15 DOI: 10.33552/OJDOH.2018.01.000512

I. A. Magray, T. Naqash, S. Khateeb, M. Bhat, M. W. Hussain

{"title":"Influence of Shoulder and Chamfer Margin Design on the Stress Distribution Pattern in Different All Ceramic Restorations by Three-Dimensional Finite Element Analysis","authors":"I. A. Magray, T. Naqash, S. Khateeb, M. Bhat, M. W. Hussain","doi":"10.33552/OJDOH.2018.01.000512","DOIUrl":"https://doi.org/10.33552/OJDOH.2018.01.000512","url":null,"abstract":"Purpose: The purpose of this study was to evaluate the influence of shoulder and chamfer margin design on stress distribution pattern in different all ceramic restorations. Materials and methodology: Six three-dimensional finite element models representing mandibular second premolar tooth were constructed, using a Finite Element Analysis Software (ANSYS version 14; ANSYS Inc., Canonsburg, PA, USA). Three models each with shoulder and chamfer finish line were created after tooth preparation by reverse engineering, using Pro E software. Each model with shoulder finish line margin had Bruxzir (Glidewell labs), Lava (3M ESPEE) and IPS e.max Press (Ivoclar Vivadent) all ceramic restorations fabricated over them. Same was done with the models having chamfer finish margin. A distributed load of 600 N was applied on the restorations to analyze the stress distribution pattern in different all ceramic restorations having different marginal geometry. The stress distribution in different groups was compared using one-way ANOVA and Tukey’s honest significance test. Results: Von Mises stresses in the margin region were seen to be lowest in Lava (3M ESPEE) all ceramic restoration with shoulder finish margin when subjected to masticatory bite force. The areas of maximum stress concentration were found in the cervical portion of the all ceramic restorations when subjected to loading forces. Conclusion: The type of material used, and the type of margin configuration affects the stress distribution pattern within posterior all ceramic restorations.","PeriodicalId":361768,"journal":{"name":"Online Journal of Dentistry & Oral Health","volume":"100 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134474932","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

Multiple Risk Factors of Candida Albicans Associated Denture Stomatitis 白色念珠菌相关性假牙口炎的多重危险因素

Online Journal of Dentistry & Oral Health Pub Date : 2018-11-14 DOI: 10.33552/OJDOH.2018.01.000511

Abbas M Al-Kebsi, F. Al-Motareb, Mohsen Al-Hamzy, H. Al-Shamahy, Nesreen F. Al-Sanabani, Hashim Esmail Al-Qassimi

{"title":"Multiple Risk Factors of Candida Albicans Associated Denture Stomatitis","authors":"Abbas M Al-Kebsi, F. Al-Motareb, Mohsen Al-Hamzy, H. Al-Shamahy, Nesreen F. Al-Sanabani, Hashim Esmail Al-Qassimi","doi":"10.33552/OJDOH.2018.01.000511","DOIUrl":"https://doi.org/10.33552/OJDOH.2018.01.000511","url":null,"abstract":"Background and Objectives: Opportunistic oral fungal infections have spread, especially in denture wearers. Denture stomatitis (DS) is a common inflammatory reaction with multifactorial etiology. It is usually associated with Candida species, particularly Candida albicans, due to its high virulence, ability to adhere and form biofilms on oral cavity tissues and denture surfaces. This study highlights the risk factors of Candida albicans-associated denture stomatitis. The study was carried out at Prosthodontics Departments at the Faculty of DentistrySana’a University, Sana’a city Yemen. Study design: The study group consisted of 288 denture wearers suffering from DS. Data including demographic data of the patients, clinical information, and risk factors of DS recorded in predesigned questionnaire. Result: There was a significance association between male (OR=2.33, p<0.001), older age patients (OR=6.8, p<0.001), denture poor fitness (OR=8.2, p< 0.001), older age denture (OR=14.6, p<0.001), denture manufacturers under supervision of general dentist (OR=2.9, p<0.001), non-ideal denture quality (OR=4.8, p<0.001), irregular denture cleaning (OR=2.1, p<0.001), and often overnight denture wear (OR=1.7, p=0.04). Conclusion: Management of predisposing risk factors is key in order to prevent recurrence of DS. Treatment methods may consist of: treatment of any underlying systemic risk factors, improvement in the fit of existing dentures, replacement of existing dentures, improved denture hygiene.","PeriodicalId":361768,"journal":{"name":"Online Journal of Dentistry & Oral Health","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129536064","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: 2

Investigation of Maturation Failure in Revascularization 血运重建术中成熟失败的研究

Online Journal of Dentistry & Oral Health Pub Date : 2018-10-29 DOI: 10.33552/OJDOH.2018.01.000510

G. Saygili, E. Avci

引用次数: 0

Hepatitis B Virus among Dental Clinic Workers and the Risk Factors Contributing for its Infection 牙科诊所工作人员感染乙型肝炎病毒及其危险因素

Online Journal of Dentistry & Oral Health Pub Date : 2018-10-17 DOI: 10.33552/OJDOH.2018.01.000509

H. Al-Shamahy

{"title":"Hepatitis B Virus among Dental Clinic Workers and the Risk Factors Contributing for its Infection","authors":"H. Al-Shamahy","doi":"10.33552/OJDOH.2018.01.000509","DOIUrl":"https://doi.org/10.33552/OJDOH.2018.01.000509","url":null,"abstract":"Objectives: Dental clinic workers (DCWs) in Yemen have an additional risk of getting infected with HBV from their workplace and till now they are not routinely vaccinated against HBV infection. This study aimed to estimate prevalence of hepatitis B virus infection and associated risk factors among DCW in selected dental clinics in Sana’a city. Study design: Data were acquired from a cross sectional survey conducted among DCWs in 2014 at the Faculty of Dentistry, Sana’a University, in Sana’a city. A proportionate to size random sample was drawn per DCW category. A structured questionnaire was used to collect data about socio-demographic characteristics and risk factors. ELISA was used to test sera for HBV markers. Result: The study included 246 dentists and 263 dental assistants, the sero-prevalence of current hepatitis B virus infection was 6.1%; while prevalence of life time exposure to hepatitis B virus infection was 18%. Prevalence of needle stick injuries, exposure to skin and to mucous membranes were 45.6%, 26.5% and 25.3% respectively. Cuts were also common with 41.1% of participants reporting a cut in a period of one year preceding the survey. Regular use of gloves, face mask, and glasses were reported by 74.4%, 28.3% and 25.3% of participants respectively. Only 30.1% of respondents were vaccinated against hepatitis B virus infection and 52.1% were susceptible and could potentially be protected through vaccination. Longer duration in service was associated with risk of infection (OR ranged from 2.2-2.65; P value = 0.002). Being assistant (OR = 1.97; P value = 0.001) was associated with a higher risk of hepatitis B virus infection. Conclusion: The prevalence of current and life time exposure to HBV infection was high. Exposure to potentially infectious body fluids was high and yet only a small percentage of DCW were vaccinated, so there is need to vaccinate all DCWs as a matter of policy and ensure a safer work environment.","PeriodicalId":361768,"journal":{"name":"Online Journal of Dentistry & Oral Health","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121807236","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: 5

The Use of Raman Fluorescence Technology to Evaluate the Effectiveness of Remineralization of Solid Tooth Tissue 利用拉曼荧光技术评价实牙组织再矿化的有效性

Online Journal of Dentistry & Oral Health Pub Date : 2018-10-15 DOI: 10.33552/ojdoh.2019.02.000526

D. Prikule, M. Alexandrov, V. Kukushkin, E. Pashkov, Aijun An, Namiot Ed

引用次数: 1