The New Zealand dental journal最新文献_第5页

William F Throp 1917-2014. William F Throp 1917-2014。

The New Zealand dental journal Pub Date : 2014-12-01

Richard Reaney

引用次数: 0

Microstructural analysis of Co-Cr dental alloy at the metal-porcelain interface: a pilot study. 金属-瓷界面Co-Cr牙科合金的显微组织分析:初步研究。

The New Zealand dental journal Pub Date : 2014-12-01

K C Li, S Ting, D J Prior, J N Waddell, M V Swain

{"title":"Microstructural analysis of Co-Cr dental alloy at the metal-porcelain interface: a pilot study.","authors":"K C Li, S Ting, D J Prior, J N Waddell, M V Swain","doi":"","DOIUrl":"","url":null,"abstract":"Objective: The purpose of the study was to observe whether conventional porcelain firings had an effect on the underlying microstructure of cobalt-chromium alloys used in porcelain-fused-to-metal systems.Methods: One as cast (non-veneered) and two porcelain veneered Co-Cr specimens layered with and without tungsten(W)-metal conditioner were manufactured and analysed. Electron backscatter diffraction was used to determine the crystal structures and grain size across the porcelain-fused-to-metal interface.Results: No difference was found in the microstructure of the alloy in both with and without W-metal conditioner. For the porcelain fired specimens, disparately sized granular structures were observed adjacent to the metal-porcelain interfaces compared to the bulk of the metal. Ellipsoid shaped grains at the alloy surface ranged between 1-11 μm in diameter and averaged 2.70 μm (SD: 2.17 μm) for the specimen layered with W-metal conditioner and 2.86 μm (SD: 1.85 μm) for the specimen layered without W-metal conditioner. Grains located in the bulk were > 200 μm with dendritic-like features. The depth of the fine grain structure adjacent to the surface had an average depth of 15 μm. The crystal structure of the surface layer was found to be predominantly hexagonal close-packed whereas the underlying bulk was a mixture of both face-centered cubic and hexagonal close-packed phases. For the as cast specimen, similar large grains of over 200 μm was observed but exhibited no dendritic like features. In addition, no fine grains were observed at the surface region of the as cast alloy.Conclusion: Conventional porcelain firings altered the interfacial and bulk microstructure of the alloy while the presence of the W-metal conditioner had no influence on the underlying alloy microstructure.","PeriodicalId":76703,"journal":{"name":"The New Zealand dental journal","volume":"110 4","pages":"138-42"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"32981891","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

Empathy in the dentist-patient relationship: review and application. 牙患关系中的共情:回顾与应用。

The New Zealand dental journal Pub Date : 2014-09-01

L M Jones, T J Huggins

{"title":"Empathy in the dentist-patient relationship: review and application.","authors":"L M Jones, T J Huggins","doi":"","DOIUrl":"","url":null,"abstract":"Background and objectives: A review of psychology, dental, and medical literature aimed to identify key variables for an ideal dentist-patient relationship. When empathy surfaced as the key positive variable, a further aim, which became the aim of this paper, was to explore how empathy could be intentionally applied.Methods: An online database search, limited to judgementally selected target-words, was conducted for peer-reviewed papers on the dentist-patient relationship. Review guidelines from the American Psychological Association were used to clarify concepts, identify where most work was focussed, and to explore the superiority of any approach to the topic, over another.Results: The distinction between instrumental (information) and affective (emotional) communication was important with empathy being the key variable. Empathy was seen clearly to facilitate improved communication and the experience of dentistry for patient and practitioner alike. Empathy was positively associated with negotiated treatment plans, treatment adherence, increased patient satisfaction, and reduced dental anxiety. However, the concept of empathy was rarely operationally defined, or empirically measured. At best it was a scale score or a theme in qualitative data analysis. As such, applied empathy is discussed as a perceived concept. Dental school curricula and patient request forms were found to have the greatest potential to train dentists to convey empathy, and for patients to perceive empathy.Conclusion: Future directions are proposed, to apply empathy in the dentist-patient relationship through an integrated model of patient-centred communication.","PeriodicalId":76703,"journal":{"name":"The New Zealand dental journal","volume":"110 3","pages":"98-104"},"PeriodicalIF":0.0,"publicationDate":"2014-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"32705364","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

Saliva: an overview. 唾液:概述。

The New Zealand dental journal Pub Date : 2014-09-01

A M L Benn, W M Thomson

引用次数: 0

Noise levels in dental school clinics. 牙科学校诊所的噪音水平。

The New Zealand dental journal Pub Date : 2014-09-01

M Al-Dujaili, W M Thomson, R Meldrum, A H Al-Ani

{"title":"Noise levels in dental school clinics.","authors":"M Al-Dujaili, W M Thomson, R Meldrum, A H Al-Ani","doi":"","DOIUrl":"","url":null,"abstract":"Unlabelled: Prolonged exposure to noise is a little-investigated occupational hazard in dentistry. There is anecdotal evidence suggesting that noise levels in four student clinics at the School of Dentistry are higher than the current occupational noise level guidelines in New Zealand, Australia and the United Kingdom, which suggest that levels should not exceed 85 dB (A) over a duration of 8 hours. The objectives of this study were to (1) measure the noise levels in the student clinics, and (2) determine whether they exceed current guidelines for occupational noise levels.Method: A noise level meter was used to measure the decibel recordings in dB (A), before and during clinical sessions. The types of procedures being carried out by the students were recorded.Results: 127 background recordings and 126 activity recordings were made, with measured noise levels ranging from 50.2 to 77.6 dB (A) for background levels, and 51.4 to 98.0 dB (A) during activity, with means of 60.8 and 70.5 dB (A) respectively. Measurements made in one clinic (the 4SW clinic) were significantly higher than those made in the other clinics (P < 0.001), and one (clinic 2N) gave the lowest readings.Conclusion: Noise levels recorded from the clinics at the Otago School of Dentistry exceed those specified in the current New Zealand Occupational Health and Safety guidelines, but they are intermittent rather than continuous.","PeriodicalId":76703,"journal":{"name":"The New Zealand dental journal","volume":"110 3","pages":"105-8"},"PeriodicalIF":0.0,"publicationDate":"2014-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"32705365","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

Changes and challenges. 变化和挑战。

The New Zealand dental journal Pub Date : 2014-09-01

Nick Chandler

引用次数: 0

Propofol-remifentanil TCI sedation for oral surgery. 异丙酚-瑞芬太尼TCI镇静用于口腔手术。

The New Zealand dental journal Pub Date : 2014-09-01

A J Nagels, J B Bridgman, S E Bell, D J Chrisp

{"title":"Propofol-remifentanil TCI sedation for oral surgery.","authors":"A J Nagels, J B Bridgman, S E Bell, D J Chrisp","doi":"","DOIUrl":"","url":null,"abstract":"Background and objectives: To investigate the safety and efficacy of a propofol-remifentanil target controlled infusion (TCI) sedation technique for oral surgery.Methods: This prospective study involved patient and registered nurse (RN) questionnaires to assess the efficacy of sedation during surgery. Outpatients having dental extractions in a private office-based practice with TCI sedation were monitored with a Sleep Apnoea Monitor (SAM) to measure the number of Oxygen Desaturation Events (ODEs), defined as a drop in blood oxygenation to below 94%.Results: Patient- and RN-assessed questionnaires showed a high standard of perceived sedation efficacy, independent of patient BMI. The proportion of patients having one or more ODEs was greater in higher BMI categories: underweight (20.0%), normal (47.9%), overweight (68.2%) and obese (81.8%). The odds of at least one ODE was estimated to be 1.2 times greater for each unit increase in BMI (OR 1.2; 95% CI 1.1-1.3), and at a fixed BMI, the odds of at least one ODE was estimated to be 2.6 times as great for a male as a female (OR 2.6; 95% CI 1.2-5.52). Age, patient nervousness and American Society of Anesthesiologists (ASA) classification were not associated with ODEs.Conclusions: The TCI technique had a high standard of efficacy, and there were no adverse safety outcomes. Higher BMI and male sex were found to be independently associated with predictors of ODEs during oral surgery under propofol-remifentanil TCI sedation.","PeriodicalId":76703,"journal":{"name":"The New Zealand dental journal","volume":"110 3","pages":"85-9"},"PeriodicalIF":0.0,"publicationDate":"2014-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"32705362","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}

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Latest examination list of December 2013. 2013年12月的最新检查清单。

The New Zealand dental journal Pub Date : 2014-06-01

Phillip Lowe

引用次数: 0

Response to the letter to the Editor in the last issue of the Journal. 对《华尔街日报》最后一期给编辑的信的回应。

The New Zealand dental journal Pub Date : 2014-06-01

John Twaddle

引用次数: 0

NZMA backs call for evidence-based policy making. 新西兰医学会支持以证据为基础制定政策的呼吁。

The New Zealand dental journal Pub Date : 2014-06-01

Neil McD Stephen

引用次数: 0