Compendium of Oral Science最新文献_第8页

Feasibility of using Latex Examination Gloves as Dental Dam: A Tensile Strength Study 使用乳胶检查手套作为牙坝的可行性:抗拉强度研究

Compendium of Oral Science Pub Date : 2015-09-01 DOI: 10.24191/cos.v2i0.17521

Bam Sabri, Nhm Radzi, Fza Hadi, IH Ismail

{"title":"Feasibility of using Latex Examination Gloves as Dental Dam: A Tensile Strength Study","authors":"Bam Sabri, Nhm Radzi, Fza Hadi, IH Ismail","doi":"10.24191/cos.v2i0.17521","DOIUrl":"https://doi.org/10.24191/cos.v2i0.17521","url":null,"abstract":"Objective: To evaluate feasibility of hand gloves as a rubber dam isolation alternative, in respect of physical properties. Materials and Methods: A randomized controlled trial study design was used. Three types of gloves were tested with two types of a rubber dam used as the control group. Cut-out pattern of dumb-bell shapes were made from 35 samples for each type of groups and tensile strength were tested using Universal Testing Machine and the Trapezium X software. All tests for physical requirements were performed in accordance with American Society for Testing and Materials D412, Standard Test Methods for Vulcanized Rubber and Thermoplastic Rubbers and Thermoplastic Elastomers-Tension. Findings were analyzed by analysis of variance (ANOVA) and differences were compared using a Tukey-Kramer interval calculated at the 0.05 significance level. Results: Heavy gauge rubber dam has the highest Mean (calculated at the 0.05 significance level) except for maximum stress calculated at entire area. Medium-gauge rubber dam has significantly higher tensile strength (44.5075 N/mm2) when compared to heavy-gauge rubber dam (35.7787 N/mm2) although it was 0.09mm thinner. Discovery 2020 Powder Free Latex Examination Gloves with tensile strength value of 28.5922 N/mm2 (±3.27366) is more than the minimum requirement specified by American Federal Specification ZZ-R90B Rubber Dam (Dental, 1985) (4000 pounds per square inch or 27.6 N/mm2). For all variable tested, all groups are significantly different from each other. The mean square between the groups was quite large. Conclusion: This study shows that there are significant differences between the physical strength of latex gloves when compared to rubber dam. However, the comparison between thickness and tensile strength among various rubber dam, did not correspond proportionately. Only one type of rubber gloves met the minimum requirement but that is just one aspect. In view of these mixed results, more research is needed before we can conclude that it is feasable that we use hand gloves to replace rubber dam.","PeriodicalId":10525,"journal":{"name":"Compendium of Oral Science","volume":"111 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2015-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79190804","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

Blending the Appearance of All-Ceramic Crowns in Fluorosis Condition with Direct Chair-Side Technique 氟中毒全瓷冠外观与直接椅侧技术的融合

Compendium of Oral Science Pub Date : 2015-09-01 DOI: 10.24191/cos.v2i0.17526

Sma Ghani, Asaz Saifudin, Main Zari, TA Mustaza

引用次数: 0

Detail Reproduction of Elastomeric Materials: Effect of Viscosity and Groove Geometry 弹性材料的细节再现:粘度和沟槽几何形状的影响

Compendium of Oral Science Pub Date : 2015-09-01 DOI: 10.24191/cos.v2i0.17523

Nzn Mahmood, N. Kasim, M. Azuddin, Nla Kassim

{"title":"Detail Reproduction of Elastomeric Materials: Effect of Viscosity and Groove Geometry","authors":"Nzn Mahmood, N. Kasim, M. Azuddin, Nla Kassim","doi":"10.24191/cos.v2i0.17523","DOIUrl":"https://doi.org/10.24191/cos.v2i0.17523","url":null,"abstract":"Objective: To evaluate the effect of type of viscosity and groove on surface detail reproduction of elastomeric impression materials. Methods: Two polyvinylsiloxane and polyether elastomeric impression materials were investigated. An aluminium cylindrical reference block with V- and U-shaped grooves of 1 mm and 2 mm in depth was machined using CAD-CAM system. Impressions of the block were taken to produce 35 master dies. Each die was immersed in distilled water for 5 minutes prior to impression making. Surface topography of the dies and impressions were captured using Alicona Imaging System. Mean difference in depth between the master dies and corresponding impressions’ grooves were analyzed. Results: Type of viscosities and groove showed significant main effects on surface detail (p < .01), but no significant interaction was observed between the two (p > .01). Express™ putty/light exhibited the lowest mean difference in depth for all grooves. The highest mean difference for U1 (38.3μm ± 21.55), U2 (52.96μm ± 30.39),V1 (45.02μm ± 34.82) and V2 (58.44μm ± 44.19) was obtained from Impregum medium, Aquasil medium, Impregum™ heavy/light and Impregum™ heavy/light groups respectively. Conclusion: Express putty/light-bodied material produced the best surface detail, and Ushaped groove showed superior detail reproduction.","PeriodicalId":10525,"journal":{"name":"Compendium of Oral Science","volume":"24 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2015-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83984645","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

Adopting Law School Pedagogy into Teaching and Learning of Dentistry - My Melbourne Experience 将法学院教学法运用到牙科教学中——我在墨尔本的经验

Compendium of Oral Science Pub Date : 2015-09-01 DOI: 10.24191/cos.v2i0.17527

M. Ahmad

引用次数: 0

Assessment of Interradicular Spaces for Miniscrew Placement in Class I Subjects 对一级学科微型实习的根际空间评估

Compendium of Oral Science Pub Date : 2015-09-01 DOI: 10.24191/cos.v2i0.17522

N. Al-Jaf, Rma Wahab, Mia Hassan

{"title":"Assessment of Interradicular Spaces for Miniscrew Placement in Class I Subjects","authors":"N. Al-Jaf, Rma Wahab, Mia Hassan","doi":"10.24191/cos.v2i0.17522","DOIUrl":"https://doi.org/10.24191/cos.v2i0.17522","url":null,"abstract":"Objectives: To assess interradicular spaces of maxilla and mandible in subjects with class I sagittal skeletal relationship as an aid for miniscrew placement. Materials and Methods: The study was carried out using cone-beam computed tomography (CBCT) images of 47 adult subjects with class I skeletal relationship. Interradicular spaces were obtained at the alveolar processes from first premolar to second molar at 2 different vertical levels (6 and 8mm) from the cementoenamel junction (C.E.J). Results: In the maxilla, the highest interradicular space existed between second premolar and first molar. In the mandible, the highest interradicular space existed between first and second molar. All mandibular measurements were higher than their respective maxillary measurement. Generally, availability of interradicular space increases apically in both arches, but the difference is not significant. In the maxilla, male subjects’ measurement were significantly higher at 8 mm level between second premolar and first molar and between first and second molar Conclusions: Interradicular spaces in the maxillary and mandibular alveolar spaces are available for miniscrew placement. In both arches, a more apical location provides more interradicular space. However, careful planning is needed to avoid sinus perforation.","PeriodicalId":10525,"journal":{"name":"Compendium of Oral Science","volume":"72 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2015-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85780638","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

Muscular Pain Among Dentists - A Pilot Study 牙医肌肉疼痛的初步研究

Compendium of Oral Science Pub Date : 2015-09-01 DOI: 10.24191/cos.v2i0.17524

F. Sabirin, SS Ahmad, Wzaw Kamarudin

{"title":"Muscular Pain Among Dentists - A Pilot Study","authors":"F. Sabirin, SS Ahmad, Wzaw Kamarudin","doi":"10.24191/cos.v2i0.17524","DOIUrl":"https://doi.org/10.24191/cos.v2i0.17524","url":null,"abstract":"Background: Muscular pain is the most common symptom associated to muscular skeletal disorders (MSDs). Dentists were exposed to ergonomic hazards while treating the patients. Without proper dental ergonomics, they are predisposed to the MSDs. Objective: This present study was designed to analyse the prevalence of muscular pain among practising dentists in Universiti Teknologi MARA (UiTM) and its relatedness to ergonomic factors. Methodology: A total of 25 dentists were participated in this pilot study. The inclusion criteria include working experience of at least six months and those who were readily diagnosed with musculoskeletal disorders were excluded. A self-administered questionnaire was employed to gather demographic information and close ended (“yes” or “no”) questions were asked to assess the muscular pain experienced in the last 12 months. The collected data were then analysed statistically. Result: The result showed a 100% response rate. 92% of the respondents were reported to experience muscular pain, particularly on the upper body parts. Only maintenance of same postures without microbreaks and performing torsions or cervical flexions to improve vision of oral cavity correlate significantly (P<0.05) to the presence of muscular pain that respondent experienced. However, age, nature of work and high woking hours per week does not correlate to the muscular pain. Conclusion: The prevalence of muscular pain among dentists in UiTM is high which indirectly suggested the lack of dental ergonomic awareness and practice in their routine at work.","PeriodicalId":10525,"journal":{"name":"Compendium of Oral Science","volume":"26 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2015-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84703832","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

Physicochemical and Antioxidant Properties of Malaysian Tualang Honey on Long Term Storage 马来西亚土朗蜂蜜长期贮藏的理化及抗氧化特性

Compendium of Oral Science Pub Date : 2014-09-01 DOI: 10.24191/cos.v1i0.17530

RK Kishore, S. Nasar, P. Viji, CK Lim, A. Halim

{"title":"Physicochemical and Antioxidant Properties of Malaysian Tualang Honey on Long Term Storage","authors":"RK Kishore, S. Nasar, P. Viji, CK Lim, A. Halim","doi":"10.24191/cos.v1i0.17530","DOIUrl":"https://doi.org/10.24191/cos.v1i0.17530","url":null,"abstract":"Honey is a rich source of natural nutrients. Its production is a slow, natural process with the pace of which varies seasonally. However, based on recent reports, we hypothesize that the long-term storage of processed honey, even under the most appropriate storage conditions, results in a deterioration of its quality. To test our hypothesis, we collected Tualang honey samples harvested during the years 2005, 2008, 2009 and 2010 and tested various parameters including physicochemical properties and also performed comparative analyses of antioxidant capacities to assess its medicinal values. Our results indicate that, upon long-term storage, the quality of honey samples deteriorates, as observed in our TH 2008 and TH 2005 year honey samples, which showed unacceptable quality based on the recommended criteria of free acidity (71.34±1.31 meq/kg), moisture (27.72%), diastase activity (3.38±0.34 Goth scale) and hydroxymethylfurfural (HMF) (449.89±3.23 mg/kg) by Codex and European Commission Regulation. A significant (p<0.05) decrease in antioxidant properties were also observed. In the present study, we show that, even after appropriate processing, most of the quality parameters of honey decrease, which suggest that these parameters could otherwise be used as markers to assess the age of the honey.","PeriodicalId":10525,"journal":{"name":"Compendium of Oral Science","volume":"352 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2014-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84877947","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

Shear Bond Strength of Orthodontic Brackets Bonded with Different Curing Methods 不同固化方法粘结正畸托槽的剪切粘结强度

Compendium of Oral Science Pub Date : 2014-09-01 DOI: 10.24191/cos.v1i0.17531

FI Bahnasi, NM Abdullah, M. Hassan

引用次数: 0

Review of BP Measurement in Clinical and Research 血压测量在临床和研究中的进展

Compendium of Oral Science Pub Date : 2014-09-01 DOI: 10.24191/cos.v1i0.17528

F. Sabirin

引用次数: 0

Occlusal Features of 12 Years Old Malaysian Malay Schoolchildren in Shah Alam 沙阿南12岁马来西亚马来学童的咬合特征

Compendium of Oral Science Pub Date : 2014-09-01 DOI: 10.24191/cos.v1i0.17529

Mtm Elfseyie, NM Abdullah, M. Hassan

{"title":"Occlusal Features of 12 Years Old Malaysian Malay Schoolchildren in Shah Alam","authors":"Mtm Elfseyie, NM Abdullah, M. Hassan","doi":"10.24191/cos.v1i0.17529","DOIUrl":"https://doi.org/10.24191/cos.v1i0.17529","url":null,"abstract":"Objectives: To assess the occlusal features, tongue habits, lip competence and their gender dimorphism in 12 years old Malaysian Malay school-children. Materials and methods: The method involved clinical examination of 208 subjects from public schools in Shah Alam, Selangor, Malaysia. Occlusal status was assessed according to Angle classification. The following features were also assessed and recorded: overjet, overbite, traumatic overbite, crowding, spacing, midline diastema, cross bite, scissors bite, dental midline shifts, canine displacement, missing teeth, traumatically fractured teeth, tongue thrust and lip competence. Descriptive statistics were used for all measurements; Chi-square was used to assess gender differences. Results: Class I malocclusion is most prevalent in boys and girls (44.0% and 43.8% respectively), followed by Class III malocclusion (31% in boys and 30.4% in girls). Anterior crowding was found in 69.7% of the sample while anterior spacing was found in 30.8%. Incompetent lips were more common in boys than girls. Conclusions: The prevalence of malocclusion in this age group may warrant the need for more preventive and interceptive measures in dental and oral health planning.","PeriodicalId":10525,"journal":{"name":"Compendium of Oral Science","volume":"41 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2014-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75565935","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: 4