Journal of the Canadian Dental Association最新文献_第9页

Oral Hairy Leukoplakia in Patients With No Evidence of Immunosuppression: A Case Series and Review of the Literature. 无免疫抑制证据的口腔毛状白斑:一个病例系列和文献综述。

IF 1.5 4区医学

Journal of the Canadian Dental Association Pub Date : 2018-05-01

Mark Roger Darling, Morad Alkhasawneh, Wendall Mascarenhas, Alexandra Chirila, Maria Copete

{"title":"Oral Hairy Leukoplakia in Patients With No Evidence of Immunosuppression: A Case Series and Review of the Literature.","authors":"Mark Roger Darling, Morad Alkhasawneh, Wendall Mascarenhas, Alexandra Chirila, Maria Copete","doi":"","DOIUrl":"","url":null,"abstract":"Objectives: Oral hairy leukoplakia (OHL) is caused by Epstein-Barr virus (EBV) and is often associated with HIV and other immunosuppressive conditions. It is rare in HIV-negative patients, but has been reported in patients who use immune-modulating medications (e.g., cyclosporine). The objectives of this study were to determine the occurrence of OHL in HIV-negative patients and report Langerhans cell counts in these lesions.Study design: A series of 7 new cases of OHL among HIV-negative patients is described. Langerhans cells were counted using an immunoperoxidase stain for CD1a and light microscopy.Results: The 7 patients were male, ranging in age from 26 to 69 years. Clinically, all lesions were diagnosed as leukoplakia on the lateral border of the tongue. Microscopic examination revealed hyperparakeratosis and candidiasis in some cases, acanthosis and a band-like zone with clearing of cells in the upper spinous layer, which were EBV-positive by in-situ hybridization. There was a significant decrease in Langerhans cell counts in OHL patients.Conclusion: OHL can occur in HIV-negative patients.","PeriodicalId":50005,"journal":{"name":"Journal of the Canadian Dental Association","volume":"84 ","pages":"i4"},"PeriodicalIF":1.5,"publicationDate":"2018-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"37069636","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 contact angle of water on set elastomeric impression materials. 水在固定弹性压印材料上的接触角比较。

IF 1.5 4区医学

Journal of the Canadian Dental Association Pub Date : 2018-05-01

Usama Nassar, Faraz Tavoossi, Yan Wen Pan, Nathan Milavong-Viravongsa, Giseon Heo, John A Nychka

{"title":"Comparison of the contact angle of water on set elastomeric impression materials.","authors":"Usama Nassar, Faraz Tavoossi, Yan Wen Pan, Nathan Milavong-Viravongsa, Giseon Heo, John A Nychka","doi":"","DOIUrl":"","url":null,"abstract":"Purpose: The hydrophilicity of some elastomeric impression materials has not been fully established. The purpose of this study was to measure and compare the advancing contact angle of water on the surface of several set elastomeric impression materials.Materials and methods: We tested various consistencies of vinyl polysiloxane (VPS; Imprint 4) and vinyl polyether silicone (VPES; EXA'lence) with a polyether (PE; Impregum Soft) control. Impression discs (25.07 mm) were made using a metal die and ring. Deionized ultra-filtered water was placed on each disc and contact-angle measurements were made at 0, 15, 30, 45 and 60 s using a video contact angle drop shape analysis machine. The data were analyzed using repeated ANOVA and a post-hoc test with Bonferroni correction.Results: VPS contact angles reached a mean of 10.1° ± 0.2° at 60 s vs. 40.7° ± 0.1° for VPES. Overall, VPS contact angles were smaller than those for VPES at all measured times. However, heavy and super quick heavy VPS had much higher contact angles at 0 s compared with other VPS consistencies. There was a significant difference in contact angles between VPS and VPES (mean difference 33.9°, p < 0.05) and between VPS and PE (mean difference 32.8°, p < 0.05) but not between VPES and PE (P = 0.196). VPS heavy and super quick heavy were significantly different from other VPS materials (p < 0.05), but not from each other (p = 1.00).Conclusions: Set VPS is more hydrophilic than VPES. Contact-angle values of VPS indicated super hydrophilicity. VPES was hydrophilic, with measurements similar to the PE control. Thus, VPS impression materials may be excellent in terms of spreading and copying wet surfaces.","PeriodicalId":50005,"journal":{"name":"Journal of the Canadian Dental Association","volume":"84 ","pages":"i6"},"PeriodicalIF":1.5,"publicationDate":"2018-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"37069635","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

More than Just Pulling Teeth: The Impact of Dental Care on Patients' Lived Experiences. 不仅仅是拔牙:牙科护理对患者生活体验的影响。

IF 1.5 4区医学

Journal of the Canadian Dental Association Pub Date : 2018-05-01

Loretta Kerr

引用次数: 0

Accuracy of Thermosensitive Microsensors Intended to Monitor Patient Use of Removable Oral Appliances. 用于监测患者使用可移动口腔器械的热敏微传感器的准确性。

IF 1.5 4区医学

Journal of the Canadian Dental Association Pub Date : 2018-05-01

Stacey Kirshenblatt, Hui Chen, Marijke Dieltjens, Benjamin Pliska, Fernanda R Almeida

{"title":"Accuracy of Thermosensitive Microsensors Intended to Monitor Patient Use of Removable Oral Appliances.","authors":"Stacey Kirshenblatt, Hui Chen, Marijke Dieltjens, Benjamin Pliska, Fernanda R Almeida","doi":"","DOIUrl":"","url":null,"abstract":"Objective: The aim of this study was to evaluate the accuracy of 3 thermosensitive microsensors that record \"wear time\" of removable oral appliances (OAs).Methods: For in vitro testing, TheraMon (sensor T, n = 20), AIR-AID SLEEP (sensor A, n = 30) and DentiTrac (sensor D, n = 16) microsensors were placed in a water bath to simulate long and short durations of wear. Their accuracy was also assessed when they were embedded in 3 materials: acrylic, polyvinylchloride and thermoactive acrylic. In vivo testing included 14 volunteers, who wore maxillary retainers embedded with sensors A and D for 30 nights. Logs of appliance use were compared with readouts from the sensors.Results: In the in vitro long duration of wear assessment, sensor A, with a mean absolute response difference (MARD) of 1.67 min. (SD 1.41), was significantly more accurate than sensor T (MARD 3.53 min., SD 9.80) and sensor D (MARD 4.48 min., SD 8.46). For short duration of wear, sensor A (MARD 1.41 min., SD 3.60) and sensor T (MARD 1.68 min., SD 7.64) were equal in accuracy and significantly better than sensor D (MARD 14.07 min., SD 10.20). The embedding material had no effect on the recording accuracies of the microsensors. In vivo, there was no significant difference between sensors A and D.Conclusion: All 3 microsensors are highly accurate and reliable and can be used to record wear time of a removable OAs fabricated from various materials.","PeriodicalId":50005,"journal":{"name":"Journal of the Canadian Dental Association","volume":"84 ","pages":"i2"},"PeriodicalIF":1.5,"publicationDate":"2018-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"37069633","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

Adherence to Treatment with Removable Oral Appliances: the Past and the Future. 坚持使用可移动口腔矫治器治疗:过去和未来。

IF 1.5 4区医学

Journal of the Canadian Dental Association Pub Date : 2018-04-01

Stacey Kirshenblatt, Hui Chen, Marijke Dieltjens, Benjamin Pliska, Fernanda R Almeida

引用次数: 0

Biochemical Stability and Interactions of Dental Resin Composites and Adhesives with Host and Bacteria in the Oral Cavity: A Review. 口腔树脂复合材料和黏合剂的生物化学稳定性及其与宿主和细菌的相互作用综述。

IF 1.5 4区医学

Journal of the Canadian Dental Association Pub Date : 2018-01-01

Maher Bourbia, Yoav Finer

{"title":"Biochemical Stability and Interactions of Dental Resin Composites and Adhesives with Host and Bacteria in the Oral Cavity: A Review.","authors":"Maher Bourbia, Yoav Finer","doi":"","DOIUrl":"","url":null,"abstract":"The use of resin composites and adhesives in dental restorations is ubiquitous. However, the longevity of resin composites is less than that of comparable restorative materials, mainly because of higher fracture rates and greater prevalence of secondary caries. Dental resin composites and adhesives contain ester links, which are vulnerable to biochemical hydrolysis by esterase activity from human saliva and bacteria. In this article, we review biodegradation processes that occur in the oral cavity and their contribution to the premature failure of resin composites. Biodegradation causes deterioration of resin composite bulk and the composite-tooth interface and releases by-products, such as methacrylic acid, triethylene glycol and bishydroxy-propoxy-phenyl-propane. These by-products have been shown to affect cariogenic bacterial growth and virulence. A compromised restoration-tooth interface allows saliva and oral bacteria to infiltrate the spaces between the tooth and the composite, exacerbating the effects of biodegradation, undermining the restoration and leading to recurrent caries, hypersensitivity and pulpal inflammation. It is important to consider the biochemical stability of these materials to advance their chemistry beyond the current formulations and conceive more biochemically stable and better-performing dental resin composites and adhesives.","PeriodicalId":50005,"journal":{"name":"Journal of the Canadian Dental Association","volume":"84 ","pages":"i1"},"PeriodicalIF":1.5,"publicationDate":"2018-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"35892204","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

Culturally adapted musical intervention for patient-centred health care. 适应文化的音乐干预，以病人为中心的卫生保健。

IF 1.5 4区医学

Journal of the Canadian Dental Association Pub Date : 2017-12-01

Elham Emami, Nathalie Gosselin, Pierre Rainville, Robert Durand

引用次数: 0

The Perfect Storm: What's Pushing Canadians Abroad for Dental Care? 完美风暴:是什么促使加拿大人出国接受牙科护理?

IF 1.5 4区医学

Journal of the Canadian Dental Association Pub Date : 2017-10-01

Krystyna Adams, Jeremy Snyder, Valorie A Crooks

引用次数: 0

Sterilization of Ceramic Sharpening Stones. 陶瓷磨刀石的灭菌。

IF 1.5 4区医学

Journal of the Canadian Dental Association Pub Date : 2017-09-01

Colin B Wiebe, Bonnie J Hoath, Gethin Owen, Jiarui Bi, Georgios Giannelis, Hannu S Larjava

{"title":"Sterilization of Ceramic Sharpening Stones.","authors":"Colin B Wiebe, Bonnie J Hoath, Gethin Owen, Jiarui Bi, Georgios Giannelis, Hannu S Larjava","doi":"","DOIUrl":"","url":null,"abstract":"Traditionally, periodontal hand instruments are honed or sharpened during patient care as they dull easily during contact with enamel, calculus and cementum. This approach is taught in dental and hygiene schools around the world and remains the standard of care. Recently, some professional organizations have questioned whether this practice should be abandoned because of safety issues. Questions have been raised whether sharpening stones can be properly sterilized and whether the sharpening of contaminated instruments poses a health hazard for the provider. Using bacteria culture techniques and scanning electron microscopy, we tested whether contaminated ceramic sharpening stones can be sterilized. Our results demonstrate that the stones were sterile after being subjected to the manufacturer's sterilization protocol. In addition, over the last year, no incidents related to periodontal instrument sharpening have been reported among nearly 400 students at the faculty of dentistry, University of British Columbia, where chair-side sharpening is taught. Therefore, we conclude that ceramic sharpening stones can be sterilized using normal office protocols and that chair-side sharpening adds little risk beyond routine handling of operatory or periodontal instruments during patient care when proper protocols are followed.","PeriodicalId":50005,"journal":{"name":"Journal of the Canadian Dental Association","volume":"83 ","pages":"h11"},"PeriodicalIF":1.5,"publicationDate":"2017-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"35891734","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

Antibiotic and Opioid Analgesic Prescribing Patterns of Dentists in Vancouver and Endodontic Specialists in British Columbia. 温哥华牙医和不列颠哥伦比亚省牙髓专家的抗生素和阿片类镇痛药处方模式。

IF 1.5 4区医学

Journal of the Canadian Dental Association Pub Date : 2017-09-01

Rene Buttar, Jolanta Aleksejūnienė, Jeffrey Coil

{"title":"Antibiotic and Opioid Analgesic Prescribing Patterns of Dentists in Vancouver and Endodontic Specialists in British Columbia.","authors":"Rene Buttar, Jolanta Aleksejūnienė, Jeffrey Coil","doi":"","DOIUrl":"","url":null,"abstract":"Aim: To assess the prescribing decisions of general dentists in Vancouver and endodontists in British Columbia regarding analgesics and antibiotics for patients with endodontic disease. An additional aim was to determine whether gender, clinical experience or practice location have an impact on such decisions.Methods: A 4-page survey was developed and distributed to approximately half the general dentists in Vancouver (n = 259) and all of the endodontists in British Columbia (n = 50). Basic demographic questions were followed by 7 clinical scenarios and a list of endodontic diagnoses. Participants were asked questions regarding their decisions to prescribe analgesics and antibiotics.Results: The overall response rate was 49%: 72% of endodontists responded, compared with 45% of general dentists. A substantial proportion of clinicians prescribed opioid analgesics and antibiotics in the various clinical scenarios. The rate of prescription of opioid analgesics ranged from 4%-47% for the various scenarios; the rate of prescription of antibiotics was 5%-88%. General dentists reported prescribing opioid analgesics and antibiotics more often than endodontists. Gender, clinical experience and practice location did not seem to have an impact on the decision to prescribe opioid analgesics or antibiotics.Conclusions: Based on the results of our survey, a significant proportion of dental professionals in British Columbia prescribe opioid analgesics and antibiotics during endodontic procedures when they are likely not required. General dentists tend to prescribe these medications more often than endodontists. We found no apparent differences in terms of gender, clinical experience or practice location. Dentists must be conscientious when prescribing these medications as over-prescription has negative consequences.","PeriodicalId":50005,"journal":{"name":"Journal of the Canadian Dental Association","volume":"83 ","pages":"h8"},"PeriodicalIF":1.5,"publicationDate":"2017-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"35890237","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