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Orthodontics VOL.22 NO.1 January 2017 Orthodontics OFFICIAL PUBLICATION FOR THE FEDERATION OF MEDICAL SOCIETIES OF HONG KONG ISSN 1812 - 1691 VOL.22 NO.1 JANUARY 2017 Contents Contents Message from the President Life Style n New Year Message from the President 2 n CHARITY? DONATION? OR WHAT? 33 - 知，不知 know the unknown Dr David Ting-on LEUNG Dr Mario Wai-kwong CHAK Editorial Dermatological Quiz n 31 n Editorial 4 Dermatological Quiz Dr Lai-yin CHONG Dr Wilson LEE Medical Bulletin Medical Diary of January 35 n Why do children need early orthodontic assessment? 7 Calendar of Events 36 Dr Franklin Tsang-tsang SHE & Dr Wilson LEE CME n MCHK CME Programme Self-assessment Questions 12 n Craniofacial Orthodontics in Hong Kong 14 Dr Ricky Wing-kit WONG, Dr Siu-chung FUNG & Dr Angus Cheuk-hin HO n Interdisciplinary management of gummy smile 17 Dr Franklin Tsang-tsang SHE, Dr Adrian Wing-chun SETO & Scan the QR-code Dr Mei-man CHONG To read more about n Invisalign® Orthodontic Treatment 24 Dr Charlene CL WU The Federation of Medical n IncognitoTM Lingual Orthodontic Appliance – An Update 28 Societies of Hong Kong Dr Wilson LEE Disclaimer All materials published in the Hong Kong Medical Diary represent the opinions of the authors responsible for the articles and do not reflect the official views or policy of the Federation of Medical Societies of Hong Kong, member societies or the publisher. Publication of an advertisement in the Hong Kong Medical Diary does not constitute endorsement or approval of the product or service promoted or of any claims made by the advertisers with respect to such products or services. The Federation of Medical Societies of Hong Kong and the Hong Kong Medical Diary assume no responsibility for any injury and/or damage to persons or property arising from any use of execution of any methods, treatments, therapy, operations, instructions, ideas contained in the printed articles. Because of rapid advances in medicine, independent verification of diagnoses, treatment method and drug dosage should be made. The Cover Shot Wax typodont with metal teeth, brackets and orthodontic wires Orthodontic specialist training always includes practical exercises with Wax typodont and the study of biomechanics in tooth movements. When orthodontic wires are skillfully bent and strategically placed on the bracket slots, they will move the teeth to planned and desired positions. By placing the wax typodont into hot Dr Wilson LEE water, the wax will soften and the teeth FCDSHK (Orthodontics), will move to certain positions based on FHKAM (Dental Surgery), applied forces. This typodont illustrates MOrthRCS (Edin), MOrth (HK), AdvDipOrtho (HK), MRACDS (Ortho), that a statically determined force system, BDS (HK), BSc (Toronto) i.e. cantilever, is used to extrude the upper Specialist in Orthodontics, Private Practice; right canine and upright the mesially tilted Part-time Clinical Lecturer, Faculty of lower right second molar. Dentistry, University of Hong Kong; Executive Committee Member (HKSO), Asian Pacific Orthodontic Society 1 VOL.22 NO.1 JANUARY 2017 Message from the President New Year Message from the President - 知，不知 know the unknown Dr Mario Wai-kwong CHAK President The Federation of Medical Societies of Hong Kong Dr Mario Wai-kwong CHAK It is my great honour and privilege to be elected and to In the past one year, the whole world’s health system serve the Federation in the past one year. including that of Hong Kong has faced a lot of new challenges and emerging health problems including To begin the New Year, I would like to share with an ageing population, rising trends of malignancy you all a proverb from the famous ancient Chinese and obesity related disorders, epidemics of flu and philosopher Laozi, written as "Limitation" in Tao De threat of Zika virus infection, health problems related Ching chapter seventy one 〈道德經第七十一章:不病〉 to environmental pollution and climate change etc. 「知，不知，上；不知，知，病。聖人不病，以其病病, Although we have found the solution to some of these 是以不病。」 health problems, many of them still have no identifiable Who recognises his/her limitation is healthy; who solution and rely on health care professionals to find an ignores his/her limitation is sick. The saint recognises effective solution. his/her limitation as sickness, so becomes immune. At the same time, over the past one year, we appreciate In the present era, I have found proverbs/quotes with the many health professionals and medical societies similar meaning from an American politician Donald who have made an effort to try to find out what Rumsfeld as follows: they need to know but not yet know, by updating There are known knowns. These are things we know that themselves with the latest medical knowledge and we know. There are known unknowns. That is to say, there technology in their respective professional field and are things that we know we don't know. But there are also specialties/subspecialties either through self-learning unknown unknowns. There are things we don't know we or by attending overseas training course or through don't know. peer group reviews by organising local or international scientific meetings, conferences and workshops with In regards to the attitude to knowledge, both of these invited overseas expert speakers. famous proverbs/quotes of Chinese and Western wisdom remind us not only do we need to know the The Federation of Medical Societies of Hong Kong as things which we don't know, but more importantly is an umbrella society of at present 140 medical, dental, to realise that there are things we think we know, but nursing and allied health societies will continue our actually we don't know or do not fully understand. By mission to take up the role of exploring and promoting recognising and admitting to one’s own limitation in advancement of knowledge and high quality medical knowledge is not a weakness; on the contrary, this is and health care, as well as by providing various the way to motivate ourself to improve and to ask for continuing educational activities and materials. the truth, updated knowledge and technology. If we put it into practice, this is to have life-long continuing For example, the certificate courses held jointly with medical education. Although written many years ago, members societies have proved popular, and covered this proverb continues to convey words of great wisdom diverse topics and areas. Our publication, the Medical and a moral message today. Diary, is of professional interests with different monthly topic reviews and update knowledge. Annual scientific With recent rapid development of medical knowledge meetings with theme of "Holistic care in the era of and technology, we have breakthroughs in specialty-based medicine" have addressed important understanding how our body system, for instance, areas of medicine with talks delivered by various local human genome, gut microbiota, immune system, brain experts. Public and Professionals’ opinion survey functional network, body metabolism, chemical and in palliative care and advanced directive, as well as receptor work and function. Some old concepts which symposium and round table discussion of "Care for we previously thought as true, has now become untrue Advanced Diseases" have been held, for discussions and we have a new understanding. All these have on key health or policy issues, followed by document brought breakthroughs in terms of clinical diagnosis feedback to the government. and treatment. For example, many previous unknown diseases now could be diagnosed by genetic and Apart from offering continuing education, the molecular tests, hence giving more information on Federation also provides lots of other support to disease prognosis and guide more specific treatment; our member societies. For example, our Federation many previous incurable malignancies now could have premises are a popular venue and open for rental by a more effective and specific target therapy with much our member societies for meetings, seminars, and less side effects. conferences. Furthermore, we offer administrative 2 VOL.22 NO.1 JANUARY 2017 Message from the President support to assist different member societies to organise Finally, I have to thank all for the effort and support local and international conferences, both in Hong Kong, from our ExCo members, Foundation directors, council Macau and the Mainland. Our secretariat has different members and staff of the secretarial board in the past packages of services to suit societies' needs include year. We cannot succeed without your collaboration. handling minutes, accounts, regular meetings, as well as With continuous support and contribution, we are annual scientific meetings etc. confident in further excelling in 2017. We look forward to working alongside with you all in the near future. On the charity side, The Federation's Foundation Once again, on behalf of the Federation, I wish you and continues to organise Public talks on different important your family all the best, and may you all have a happy, health issues, as well as conduct projects for bereaved healthy, wealthy and prosperous year ahead. children, such as, our Drama Putonghua Course, Music & Academic Scholarships. On the fraternity side, we Thank you. have successfully organised a basketball tournament in the Wanchai Southorn Playground and the Annual Federation dinner with the theme as "Rainbow Extravaganza" on New Year’s Eve in 2016. 3 VOL.22 NO.1 JANUARY 2017 Editorial Published by The Federation of Medical Societies of Hong Kong Editorial EDITOR-IN-CHIEF Dr MOK Chun-on 莫鎮安醫生 Dr Wilson LEE FCDSHK (Orthodontics), FHKAM (Dental Surgery), EDITORS MOrthRCS (Edin), MOrth (HK), AdvDipOrtho (HK), Prof CHAN Chi-fung, Godfrey MRACDS (Ortho), BDS (HK), BSc (Toronto) 陳志峰教授 (Paediatrics) Specialist in Orthodontics, Private Practice; Dr CHAN Chi-kuen Part-time Clinical Lecturer, Faculty of Dentistry, The University of Hong Kong; 陳志權醫生 (Gastroenterology & Hepatology) Executive Committee Member (HKSO), Asian Pacific Orthodontic Society Dr KING Wing-keung, Walter 金永強醫生 (Plastic Surgery) Editor Dr LO See-kit, Raymond 勞思傑醫生 (Geriatric Medicine) Dr Wilson LEE EDITORIAL BOARD Dr AU Wing-yan, Thomas Orthodontics is the first specialty field within Dentistry.
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