Hong Kong Society of Periodontology and Implant Dentistry

Please be reminded that our annual general meeting will be held in Marco Polo Hong Kong Hotel at 9:00am on 3rd December 2017. The summary of our Society's financial statement can be found in the member area of our website at www.hkspid.org. We are looking forward to seeing you at the meeting.

List of Nominees for Election of councilors (2017-2019)

The following nominees have been received by Hong Kong Society of Periodontology and Implant Dentistry Limited for the election of councilors at the Annual General Meeting held on 3rd December 2017.







Dr. Tse Carl

Dr. Fung Kin Yue

Dr. Ngai Kwai Shing


Dr. Wong Sing Yan, Philip

Dr. Ngai Kwai Shing

Dr. Lai Man Leung, Stanley


Dr. Chan Wing Ho, Boris

Dr. Annie Chen

Dr. Trustin Choi


Dr. Lin Wai Shun, Wilson

Dr. Wong Sing Yan, Philip

Dr. Wan Chi Pui


As the number of nominations does not exceed the number of vacancies, all the nominees shall be deemed to have been elected to the council.

Annual General Meeting 2017

Date: 3rd December 2017

Venue: Centenary Room 1, G/F, Marco Polo Hong Kong Hotel,

3 Canton Road, Habour City, Tsim Sha Tsui, Kowloon, Hong Kong.


Registration                    : 8:30 to 9:00am

Annual General Meeting: 9:00 am to 1:00pm

and Lecture                                              

CME: pending                                          


"Principles of flap design and wound healing. From periodontal plastic surgery to implant management" 

Prof. Maurizio S Tonetti


HKSPID Study Group

"Mechanical plaque control - revisit"

Date: 18-10-2017

Time: 7:30-9:30pm

Venue: PPDH 7/F Lounge

From left to right: Dr. Chung-Yin Leung, Dr. Becky Woo, Dr. Kelvin Wan, Dr. Wilson Lin, Dr. Annie Chan, Dr. Trustin Choi, Dr. Yuen-Kwan Tse, Dr. Clive Fung, Dr. Vincent Ngai.

Free for HKSPID members

12th Asian Pacific Society of Periodontology Meeting

Please visit  apsp2017seoul.org  for more details

HKSPID Study Group 2017

Chemical Plaque Control - from evidence to practice




14th June 2017 (Wednesday)




7/F, Prince Philip Dental Hospital

34 Hospital Road, Sai Ying Pun, Hong Kong.


Dr. Ngai Kwai Shing Vincent


To gather a group of clinicians with the relevant expertise or interest to discuss on the issue of concern


Through structured critical discussion on the relevant evidence during the process, to produce clinically useful comments, recommendations, guidelines, or consensus statements on the concerned issue


From left to right: Dr. Clive Fung, Dr. Chung-Yin Leung, Dr. Yuen-Kwan Tse, Dr. Man-Ha Chan, Dr. Douglas Chong, Dr. Sin-Tsoi Ng, Dr. Sui-Cheung Sum, Dr. Annie Chan, Dr. Becky Woo, Dr. Trustin Choi, Dr. Wilson Lin, Dr. Kelvin Wan, Dr. Cheuk-Kuen Cheng, Dr. Hok-Ling Wong, Dr. Henry Liu




l     It was found that many studies on chemical plaque control involve certain amount of bias and heterogeneity.

l     In a comprehensive review “Efficacy of adjunctive anti-plaque chemical agents in managing gingivitis: a systematic review and meta-analysis” by Serrano et al.in 2015, it stated that: “Regarding the independency of the study, in terms of funding and authors, most of the studies were economically supported by private companies with commercial interests in the results, which were clearly stated in the paper (n = 43) or was evident due to the presence of employees of the company in the list of authors (n = 31). Independent researchers (e.g. university staff) were authors in 70 papers, but in 38 of them, they worked together with employees of the funding company (total, n = 53) and/or with staff from a private research company (total, n = 24). Considering as low risk of bias those studies with independent authors and funding, four had low, eight unclear and 75 high risk.”

l     However, with all the existing available evidence, it was found that chemical plaque control provides statistically significant additional benefit over the control groups

l     The clinical benefit varied with different agents and with different indices used in the studies.

The additional effects were statistically significant in terms of Loe & Silness gingival index (46 comparisons, WMD -0.217), modified gingival index (n = 23, -0.415), gingivitis severity index (n = 26, -14.939%) or bleeding index (n = 23, -7.626%), with significant heterogeneity. For plaque, additional effects were found for Turesky (66 studies, WMD -0.475), Silness & Loe (n = 26, -0.109), and plaque severity (n = 12, -23.4%) indices, with significant heterogeneity (Serrano et al. 2015).

l     Whether this benefit offer any clinical value is subjected to interpretation.

l     The studies didn’t address the cost-effectiveness issue

l     No specific recommendation for target group of patient who will benefit most from chemical plaque control

l     In many studies, participants in the control group were allowed to brush according to their normal regimen without proper oral hygiene instruction.

l     As early as 1965, Lo¨e et al. Showed, in the well-known “Experimental Gingivitis” study, that proper mechanical tooth brushing is effective in treating gingivitis.

l     Lang et al.(1973) demonstrated that students who thoroughly removed plaque at least every second day, did not develop clinical signs of gingival inflammation over a 6-week period. This included the use of inter-proximal aids (dental floss and toothpicks) as well as the toothbrush.

l     In the well-motivated and properly instructed individuals who are willing to invest the necessary time and effort, mechanical measures using traditional toothbrushes and adjunctive manual (inter-dental) devices are effective in controlling plaque. Although maintaining a dentition close to plaque free is not easy.


Comments and recommendations


1.   One should not rely on chemical plaque control to solve gingivitis problem. On the other hand, good mechanical plaque control can prevent and successfully treat gingivitis.

2.   Mouth rinse should not be recommended as the first line of management strategy for gingivitis.

3.   We recommend improving patients’ oral hygiene by mechanical tooth bushing and interdental cleaning.

4.   Toothpaste with antiplaque agent may be used as it does not involve extra procedure.

5.   Routine use of mouth rinse for everyone is not recommended.

6.   Mouth rinse may be used in certain clinical situations: (Whenever patient is unable to perform proper mechanical plaque control).

a.      Temporary use after oral surgery.

b.      Inability to clean at certain areas.

c.      Patient with reduced manual dexterity.

d.      When patients, due to various reasons, cannot achieve sufficient oral cleanliness after repeated exhaustive effort of oral hygiene instruction.

When prescribing mouth rinse, clinician should also take into account of the possible side effects and cost-effectiveness of its use.


In the Oral Health Survey 2011, 15.4% Hong Kong people believe mouth rinse can prevent gum disease but only 47.9% think that tooth brushing can prevent gum disease.


One should be careful when people over enthusiastically promote the effect of chemical plaque control, there is a risk that the public may misinterpret chemical plaque control agent as a powerful and essential agent that they can rely on, hence compromise the desire to improve their own tooth brushing. 





12th Asian Pacific Society of Periodontology Meeting

The 12th APSP Meeting will be held in Seoul on September 22-24, 2017.  

The theme of this meeting is "Contemporary concepts in periodontology and implant dentistry" and the scientific program will showcase the cutting edge advances in the specialty and highlight best researches from member countries. New basic and clinical research findings presented will invigorate you and help you better the health of all your patients. 

For more information, please visit the following webpage for more details




Hong Kong Society of Periodontology and implant Dentistry Ltd.

Annual General Meeting 2016


Date: 4th December 2016 (Sunday)

Time: 9:00-13:00

Venue: Jade Room, 2nd floor, Eaton Hong Kong. 380 Nathan Road, Kowloon.



And lectures by Prof. Maurizio S Tonetti


DMD (Genova, Italy), PhD (Berne, Switzerland), MMSc (Harvard, USA), FRCPS, FRCS(England)

Prof Maurizio S Tonetti, Clinical Professor and discipline co-ordinator in Periodontology at the Faculty of Dentistry, The University of Hong Kong and Executive Director, European Research Group on Periodontology (ERGOPerio). Formerly: Professor and Head, Department of Periodontology, School of Dental Medicine, University of Connecticut Health Science Centre. Professor and Head, Department of Periodontology at University College London – UK. Adjunct Professor, University of Berne – Switzerland, and University of North Carolina at Chapel Hill – USA. He serves as Editor in Chief of the Journal of Clinical Periodontology. 


Lecture 1

How to fully capture the benefits of periodontal regeneration to change prognosis of compromised teeth. State of the art practice.


Lecture 2

Winning the challenge of periodontitis: integrated preventive and therapeutic care pathway in primary and specialist practice.




Registration start


Lecture 1 + AGM




Lecture 2 and Periodontal Experts Panel Discussion

(Solely sponsored by GSK)







Common head and neck pain that you would encounter in a dental clinic

Date: 11 November 2016 (Friday)
Time: 7:30-9:30
Speaker: Dr Sunny Lee (Specialist in Pain Medicine)
Venue: 7/F Lounge, PPDH 

Course fee: $500 (Free for members)

Light refreshment provided before and after the seminar


Dr Lee graduated from the Chinese University of Hong Kong. After finished his training in Anaesthesiology and Pain Medicine in Hong Kong, he went to Australia to pursuit further training in pain medicine. After practicing in Australia for some time, he went back to Hong Kong and became the first registered pain medicine specialist here. Currently, he runs his private practices in both Hong Kong and Australia. He is the pioneer in many areas in the field. For example, he is the only private practitioner providing services for spinal cord stimulation at present.


Pain is a commonly encountered problem in clinical practice. It is considered as the fifth vital sign in modern medicine. Researches show chronic pain affects about 20% of population.
In the talk, the speaker would share with the audiences different aspects of pain medicine. He would explore some basic science of pain, principles of pain treatment, types and nature of analgesics and some commonly encountered chronic pain problems that may encountered by dentists.



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