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Continuing Dental Education (CDE) Public Lecture
CDE Public Lecture
Magnetic Attachments: Introduction, Clinical and Laboratory Procedures and clinical cases Dr Andrew Dias Abstract Although the use of magnets to retain prostheses was advocated more than 60 years ago, the systems described had several inherent problems which discouraged their widespread clinical use. The main problem amongst several was the size factor. The nature of the magnet alloys then available was such that to obtain an adequate retentive force, the magnets necessarily had to be too large for intra-oral use. The development of the rare-earth alloys, notably cobalt-samarium in the early 1970s and neodymium-iron-boron a decade later, with their superior magnetic properties, changed the situation. The magnetic properties of these alloys made it possible to produce extremely short magnets with sufficient magnetic force for effective retention. With this development, the interest in dental magnets was revived, resulting in several magnet systems being produced commercially. In general, the features relevant to clinical use are the type of field, retentive force, magnet dimension, keeper designs, useful life and cost. Clinical and laboratory procedures are simple, not requiring any special equipment or training. The problems common to all system are pain/discomfort, loss of force, abutment margin fracture, keeper and magnet loss and loss of abutment. These problems however are easily managed.
The Speaker Dr Andrew Dias, BDS (Ceylon), MDS (Singapore), FDSRCPS (Glasgow),
FHKAM (Dental Surgery), FCDSHK, M Phil (Hong Kong) has served in several institutes and universities
in Sri Lanka, Birmingham (UK), and Papua New Guinea. He also served
in the Dental Faculty, University of Malaya as a lecturer (1974-1978),
and then as Head of the Prosthetics Department from 1980 to 1986.
He is presently an Assistant Professor in Prosthetic Dentistry at
the Prince Philip Dental Hospital, Hong Kong. Dr Dias has over 70
publications in international academic journals and has lectured
extensively on prosthetic dentistry and dental magnets internationally.
His current research projects include the use of magnets in dentistry
(keeper - coping interface, super-thin and extrusion magnets). Viability of Magnetic Denture Retainers - A 3-year case Report Dr Hilary Thean The Progress of Dental Magnetic Attachment Product Development in Japan Mr Aki Watarai
Friday, 19 July 02 Time 1830 hrs - 2100 hrs Venue Seminar Room 1 & 2, Organiser
Chairperson Dr Loh Poey Ling CDE Accreditation Point Registration Admission is Free Please contact Mrs Doris Wong of the school for more information concerning this Public Lecture offered.
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