The International Dental Journal is published bimonthly by FDI World Dental Press Ltd., the registered publishing house of the FDI World Dental Federation, 13 chemin du Levant, l’Avant Centre, F-01210 Ferney-Voltaire, France. Tel: +33 4 50 40 50 50. Fax: +33 4 50 40 55 55.
Manuscripts, prepared in accordance with the International Dental Journal ‘Instructions to Authors’, should be submitted to: Dr S. Hancocks, Editor, IDJ, 27 Bellamy’s Court, Abbotshade Road, London SE16 5RF, UK.
All enquiries concerning advertising, subscriptions, inspection copies, back issues and reprints should be addressed to: FDI World Dental Press Ltd., 5 Battery Green Road, Lowestoft, Suffolk NR32 1DE, UK. Tel: +44 1502 511522. Fax: +44 1502 583152.
2008 subscriptions (6 issues) Members of national dental associations: print and online €75, online only €60; non-members: print and online €165, online only €135; institutional rate: print and online €340, online only €270.
FDI Individual Members (that is, individual members of national dental associations which are members of the FDI) may pay a reduced subscription of €75
Second class postage paid at Middlesex NJ. Postmaster; send address changes to C & C Mailers, International Inc., 900 Lincoln Boulevard, P O Box 177, Middlesex, New Jersey 08846, USA.
Whilst every effort is made by the publishers and Editorial Board to see that no inaccurate or misleading opinion or statement appears in this Journal they wish to make clear that the opinions expressed in the articles, correspondence, advertisements etc., herein are the responsibility of the contributor or advertiser concerned. Accordingly, the publishers and the Editorial Board and their respective employees, offices and agents accept no liability whatsoever for the consequences of any such inaccurate or misleading opinion or statement.
Copyright: All rights reserved. No part of this publication may be reproduced, stored in a retrieval system or transmitted, in any form or by any means (electronic, mechanical, photocopying, recording or otherwise), without the written permission of the publisher. For readers in the USA, permission to copy is given on the condition that the copier pay the stated per copy fee through the Copyright Clearance Center, Inc., 21 Congress Street, Salem, MA 01970 for copying beyond that permitted by Sections 107 and 108 of the US Copyright Law.
The International Dental Journal is indexed in SIIC databases
© 2008 FDI World Dental Press Ltd. and the FDI.
ISSN 0020–6539Design and layout: FDI World Dental Press Ltd., Lowestoft, UK.
Produced by Dennis Barber Ltd., UK