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Archive for May, 2014

May 31 2014

牙科新聞

Published by under Dentistry
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16-31 May 2014

香港

1. 預防牙科創傷 [信報財經新聞] 2014-05-29 C02 健康生活 有齒人生 張嘉熙牙科醫

2. 牙周病 [am730] 2014-05-29 A30 健康 醫ZONE

3. 疾病引致牙黃 長大後難復元 5-8 [明報] 2014-05-28 G07 Happy PaMa 育兒百科 Happy Pa ma

4. 激光牙科應用 [星島日報] 2014-05-26 E08 健康港 健康自尊 保健至

5. 女性妊娠期間應重視牙齒護理 [文匯報] 2014-05-25 B02 養生坊 百草

6. 美專家驗胎盤細菌證關聯 早產之謎或繫孕婦口腔 [新報] 2014-05-24 A08 港聞 醫

7. 植牙常見問題 [信報財經新聞] 2014-05-22 C02 健康生活 有齒人生 邵致勉牙科醫

8. 智慧齒口腔隱形炸彈 [太陽報] 2014-05-21 E27

9. 牙有黑點快點去補 [成報] 2014-05-21 C10 生活百寶 保健養

10. 長期缺牙後遺……植骨種牙 [香港經濟日報] 2014-05-21 C08 醫健營 醫健營 梁慧

11. 英國潮興「牙齒紋身」 [成報] 2014-05-20 A17 環球奇趣

12. 自助漂牙套裝恐漂甩牙 [太陽報] 2014-05-19 A12

13. 醫知健:精神健康:牙周炎與類風濕 [太陽報] 2014-05-18 A14 港聞 精神健康 勞振

14. 磨牙,傷的不僅是牙 [成報] 2014-05-18 C10 生活百

[Source: Wisenews]

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May 28 2014

Dental Research Seminar

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Date: June 4, 2014 (Wednesday)
Time: 12:45 p.m. to 1:45 p.m.
Venue: Lecture Theatre II, G/F, The Prince Philip Dental Hospital

Presenter: Miss Wang Shuai, PhD Candidate (12:45 p.m. to 1:15 p.m.)

Title: Effects of Enterococcus faecalis and Lipoteichoic Acid from Enterococcus faecalis on osteoblasts and osteoclasts

Abstract: Enterococcus faecalis is considered a major pathogen related to refractory root canal infection. E. faecalis colonize dentin and form biofilms in endodontically treated teeth with periapical lesions. Lipoteichoic acid (LTA) is a principal component of bacterial membrane and a major virulence factor of E. faecalis. LTA can cause apoptosis in osteoblasts and osteoclasts and stimulates leukocyte to release pro-inflammatory cytokines and bone resorption. Semaphorin 4D (Sema4D), is a mediator of osteoclast-osteoblast communication. Sema4D-Plexin-B1 bidirectional signaling plays a critical role in the suppression of osteoblast differentiation. In our present study, we for the first time have found that E. faecalis LTA induced the immune-inflammatory response of human macrophages via TLR-2 dependent NF-κB and p38 signal transduction. Furthermore, E. faecalis enhanced osteoclastogenesis with upregulation of Sema4D expression. Further studies are needed to explore the mechanisms of E. faecalis and E. faecalis LTA involved in osteogenensis, osteoclastogenesis and bidirectional signaling in bone remodeling.

 

Presenter: Mr. Jin Xiaozhuang, PhD Candidate (1:15 p.m. to 1:45 p.m.)

Title: Universal primers: Development and adhesion aspects for resin-metal bonding

Abstract: Currently, no single bonding agent could bond universally dental acrylic-based resin to metals. Recently, the novel silane system (NSS) primers were reported by Matinlinna and co-workers that could promisingly to promote the bonding between the resin and some dental biomaterials e.g. titanium and amalgam. NSS primers sought to provide a durable and hydrolytic stable bonding permanently. However, the adhesion mechanism and optimal formulation of NSS primers are not yet studied. Thus, in the current study, the mechanical, chemical and physical properties of such NSS primers would be studied in order to understand fundamentally the adhesion mechanism, and improve the NSS primers performance in acrylic-based resin to metal bonding. In addition, optimized NSS primers formulations which could universally enhance the bonding between acrylic-based resin and metals in both dental and medical systems are targeted. 

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May 28 2014

New Acquisitions Hightlights

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Implant restorations: a step-by-step guide / Carl Drago.

D 617.674 D75

Implant RestorationsA Step-by-Step Guide, Third Edition offers clinicians a practical, step-by-step approach to treatment planning and restoring dental implants. This highly illustrated, case-based book demonstrates how to treat the most commonly encountered treatment scenarios, describing the procedures, techniques, and sequences required in clear, concise language and in an easy-to-use format. The book takes the theory of implant restoration, using as its basis 3i’s implant systems, and places it directly in the operatory, concentrating in detail on each stage of the actual clinical procedures involved in treating different patients. It integrates implant treatment with the realities of running a successful restorative practice. Building on the work of the 2nd edition, the 3rd edition of this successful text reflects the advances of implant prosthetics over the intervening years, providing all new cases, exploring new techniques and technology, and demonstrating updated system components and armamentarium.

 

Basic guide to medical emergencies in the dental practice / Phil Jevon ; consulting editors, Celia Strickland, Tessa Meese, Jagtar Singh Pooni.

D 617.6874 J5

Written in a clear and accessible style, this second edition has been fully revised and updated in line with the latest guidelines. Chapters cover such key topics as the ABCDE approach to patient assessment, resuscitation equipment, respiratory and cardiac disorders, paediatric emergencies, and legal and ethical issues. Readers will also find two brand new chapters on the principles of first aid, and drugs for medical emergencies.

 

Plastics in dentistry and estrogenicity: a guide to safe practice / Theodore Eliades, George Eliades, editors.

D 617.6151 P71

This book provides a timely and comprehensive review of our current knowledge of BPA release from dental polymers and the potential endocrinological consequences. After a review of the history and evolution of the issue within the broader biomedical context, the estrogenicity of BPA is explained. The basic chemistry of the polymers used in dentistry is then presented in a simplified and clinically relevant manner. Key chapters in the book carefully evaluate the release of BPA from polycarbonate products and composite resins and the estrogenicity of these materials. Currently available evidence on the potential estrogenic action of dental composities, sealants, and adhesives is presented, and means are suggested by which adverse health effects can be minimized. The entire dental community will find this book to be an excellent source of information on the true risks posed by BPA, and an invaluable aid to safe practice.

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May 28 2014

New additions for social sciences at HKU Libraries

Every Wednesday, the new titles for the current week are put on New Book Display, G/F, Main Library.

Click on the links below to find the new additions for social sciences for the current week and the past three weeks:

Users can also subscribe to RSS feeds to receive the latest updates.

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May 27 2014

Dental Research Seminar

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Date: June 3, 2014 (Tuesday)
Time: 12:45 p.m. to 1:45 p.m.
Venue: Lecture Theatre II, G/F, The Prince Philip Dental Hospital

 

Presenter: Miss Xie Shujie, PhD Candidate (12:45 p.m. to 1:15 p.m.)

Title: Functional Characterization of a Phage-derived Exonuclease and DNA Recombination Protein from an Oral Neisseriaceae

Abstract: Two-component DNA homologous recombination systems comprising a DNA exonuclease and single strand DNA annealing protein (SSAP) are widely distributed throughout the prokaryotic world. Such DNA homologous recombination systems have been utilized in in vivo genetic engineering procedures – termed ‘recombineering’ – which can be used to modify plasmid or genomic DNA within bacterial cells. Based on their amino acid sequences, ‘YqaJ’ proteins have been predicted to comprise a distinct type of DNA exonuclease, within the large Lambda-Exo family of exonucleases. However, no YqaJ protein homologue has yet been functionally characterized. Here, I describe the comprehensive characterization of a YqaJ protein (KO-YqaJ) and partnering SSAP protein (KO-RecT) from Kingella oralis, a commensal species of oral Neisseriaceae. My experiment results clearly show that the KO-YqaJ and KO-RecT proteins have DNA recombination activities in bacterial cells, thus demonstrating their potential for use in recombineering applications. Taken together, data indicates that ‘YqaJ’ family exonuclease proteins are functionally equivalent to ‘Exo’ family proteins, but have several notable differences. Thus, my work shows that YqaJ proteins constitute a distinct class of DNA exonuclease.

 

Presenter: Mr. Li Peng, PhD Candidate (1:15 p.m. to 1:45 p.m.)

Title: Survival mechanism of microbial biofilm persisters and their interaction with the host

Abstract: Biofilm has been recognized as the predominant mode of microbial growth and exhibits higher drug resistance compared to its planktonic counterpart. The ability of pathogens to form biofilms is a leading cause for persistence of infections and failure of antibiotic therapy. A subpopulation of biofilms named “persisters” can survive from killing of lethal-dose antimicrobials. Persisters are phenotypic variants which are highly tolerant to multiple antimicrobials without acquiring genetically heritable resistance. The biological basis of persisters has been elusive and little is known about the interaction between biofilm persisters and the host cells. The present study focuses on the bacterial and fungal biofilm persisters of P. gingivalis and C. albicans to investigate the survival mechanism of microbial biofilm persisters and their interactive profiles with the host.

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May 23 2014

Dental Research Seminar

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Date: May 30, 2014 (Friday)

Time: 12:45 p.m. to 1:30 p.m.

Venue: Lecture Theatre II, G/F, The Prince Philip Dental Hospital

                                                          

Presenter: Miss Zhang Shinan, PhD Candidate

 

Title: Oral health status, knowledge and behaviors of Dai and Bulang ethnic minority groups in Yunnan Province, China

 

Abstract: An oral health survey was conducted on a sample of 5- and 12-year-old Dai and Bulang children in Yunnan, China. The dental caries prevalence among the 5-year-old Dai and Bulang children was 89% and 85%, respectively. Most of the decay were left untreated. The caries experience of the 5-year-old Dai children was associated with gender, father’s education, bottle feeding habits, snacking habits, dental visit behaviour, and oral hygiene status. The caries experience of the 5-year-old Bulang children was associated with their snacking habits, dental visit habits and oral hygiaene status. The dental caries prevalence of the 12-year-old Dai and Bulang children was 40% and 35%, respectively and most of the caries were untreated. Dental caries among the 12-year-old Dai and Bulang children and associated with gender and dental attendance. Their oral health-related knowledge was moderate. Most of them had gingivitis and around half of them had dental calculus.

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May 23 2014

Read popular recent papers from Psychology of Well Being, SpringerOpen

Below are the five most read papers published in Psychology of Well-Being in 2013, the most popular of which has been downloaded nearly 1,400 times.

Please click here to read all of Psychology of Well-Being’s content.  

HKUL users can continue to access the journal via http://library.hku.hk/record=b4723244  

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May 22 2014

Dental Research Seminar

Published by under Dentistry
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Date: May 29, 2014 (Thursday)

Time: 12:45 p.m. to 1:30 p.m.

Venue: Lecture Theatre II, G/F, The Prince Philip Dental Hospital

 

 

Presenter: Mr. Hamama Hamdi Hosni Hamdan Eldesouki, PhD Candidate

Title: Chemomechanical Caries Removal : Is it a Fact or a Science Fiction?

 

Abstract: Chemomechanical caries excavation is an excellent example of conservative caries removal methods due to its ability to reliably preserve a greater thickness of caries-affected dentine. Chemomechanical caries removal agents dissolve the denatured collagen fibrils leaving the sound and partially-degraded fibrils intact. Also, one of the main advantages of the CMCR method is its characteristic visual excavation end point sign, after this point, the solution fails to become turbid. The aim of this PhD project was to evaluate the efficacy of currently available chemomechanical caries removal  methods and its effects on tooth substrate, residual bacteria, and bonding to dentine.

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May 21 2014

New additions for social sciences at HKU Libraries

Every Wednesday, the new titles for the current week are put on New Book Display, G/F, Main Library.

Click on the links below to find the new additions for social sciences for the current week and the past three weeks:

Users can also subscribe to RSS feeds to receive the latest updates.

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May 20 2014

Access the latest Health & Social Care Research from Routledge

May’s theme: Indigenous Populations

Free Access Article Collection containing 50 key articles on health, social care, and social work issues relative to the Native American Indian population, and indigenous populations in Hawaii, Canada, and Australia/Asia Pacific regions. Find special 30-day access to six Journal Special Issues on the topic – and a listing of relevant Routledge Books.

 

Free Access to Articles on Anxiety

For one week each May, the Mental Health Foundation raises awareness of a specific theme for Mental Health Awareness Week. This year’s theme is Anxiety, one of the leading causes of mental ill-health around the world. Click here to read the collection featuring over 70 leading articles from our Behavioral Science portfolio, this collection is hosted in one handy place and is free to access until July 31st 2014.

 

Free Online Access to Articles on Emerging Sexual Identities

Please click here to find out Key Themes in Sexuality & Sexual Health article collection for May looks at emerging sexual identities.

 

Best Article from Journal of the American College of Nutrition

The 2013 Charles Ragus Award for Best Scientific Research Paper from the Journal of the American College of Nutrition is available to read for free. The winning article is “Assessment of Nutrient Adequacy with Supplement Use in a Sample of Healthy College Students”, by Catherine Ouellette et al.

 

Journal of American College Health  – Free Access Article Collection

The Journal of American College Health is a scholarly publication devoted entirely to college students’ health. Access a new article collection covering topics such as the well being of first-year students, mindfulness and stress management, alcohol & tobacco use, violence & safety, mental health issues, and sexual health and education.

HKUL users can continue to access the journal via http://library.hku.hk/record=b1982327.

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