The Australian Journal of Dentistry is a peer-reviewed publication that features original research articles, case reports, and reviews related to dentistry and oral health in Australia and around the world. With contributions from leading dental professionals, this journal provides a platform for the exchange of ideas and best practices in dental care. This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work is in the "public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.