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Australian Orthodontic Journal

Tulika Tripathi, Shilpa Kalra, Priyank Rai, Farrukh Farazt, Navneet Singh
The intrusion of the maxillary first molar is indicated when occlusal clearance is needed for prosthetic rehabilitation. Maxillary molar intrusion may be undertaken using skeletal anchorage systems to avoid complicated mechanics delivered by conventional intra-oral fixed appliances. In the present case report, the efficient use of orthodontic miniscrew anchorage by applying simple mechanics for true maxillary first molar intrusion is described. This was followed by the rehabilitation of the mandibular first molar spaces with implant prostheses...
November 2016: Australian Orthodontic Journal
Esma J Dogramaci, Vaughan S Jonest, Allan G Jones
This report introduces the Hawlix, a hybrid thermoformed and cold-cured retainer. It was developed to overcome the limitations that modified Hawley retainers possess when used in patients with bounded saddles, attributable to dental trauma or hypodontia. The Hawlix can be used as an intermediate retainer while a patient is waiting to receive restorative treatment. Some of the advantages of the Hawlix over the modified Hawley retainer include: superior aesthetics, cost-effectiveness, ease of manufacture, adequate resistance to fracture, preservation of a residual ridge, and precise space maintenance...
November 2016: Australian Orthodontic Journal
Ovais H Malik, Helen Stevenson, N A Mandall, Mubarak A Alsaeed
AIM: The aim'of the present study was to investigate whether the same orthodontic information can be obtained from study models or photographs of study models in order to assess the Index of Orthodontic Treatment Need (IOTN). The study also aimed to assess inter- and intra-examiner reliability in the assessment of orthodontic treatment need. SAMPLE: Thirty sets of start and finish study models, demonstrating a range of malocclusions, were non-randomly obtained from patients treated at the University of Manchester Dental Hospital...
November 2016: Australian Orthodontic Journal
Saori Endo, Wataru Yamada, Isao Shundo, Yoshiki Kobayashi, Akira Komatsuzakit, Toshiva Endo
OBJECTIVES: The purpose of this study was to evaluate the effects of shor-term expansion treatment using the quad-helix appliance on dentofacial morphology in orthodontic patients presenting with a hyperdivergent facial pattern. METHODS: The treatment group consisted of 40 patients with a hyperdivergent facial pattern, who were treated for maxillary incisor crowding with a quad-helix appliance during the mixed dentition period. Lateral cephalograms taken at the start (TO) and end (TI) of the treatment were obtained as a course of care...
November 2016: Australian Orthodontic Journal
Di Shan, Yuwei He, Hu Long, Yang Zhou, He Liu, Rui Xu, Renhuan Huang, Wenli Lai
OBJECTIVE: The aim of this study was to determine the effects of nociceptin/orphanin FQ peptide receptor (N/OFQ receptor) antagonist on orofacial pain induced by experimental tooth movement in rats. METHODS: A total of 36 male Sprague-Dawley rats weighing 200-300 g were divided into six groups: a control group, force group, force+saline intraperitoneal group, force+saline periodontal group, force+UFP-101 ([Nphe¹,Arg¹⁴,Lys¹⁵]N/OFQ-NH ₂ antagonist for N/OFQ receptor) intraperitoneal group, and force+UFP-1 01 periodontal group...
November 2016: Australian Orthodontic Journal
Luis Queijo, Francisco do Vale, Ana Corte-Real, Sonia Alves
INTRODUCTION: A considered space analysis aims to predict the combined mesiodistal widths of unerupted permanent canine and premolars. A miscalculation can lead to the application of inadequate and irreversible treatments. OBJECTIVE: To assess the level of agreement between predictions generated by three methods (Moyers' predictive tables at the 50th and 75th percentiles and Tanaka-Johnston's equations) on the sum of unerupted teeth compared with measurements derived from cone beam computed tomography, considered in the present study as a 'gold standard'...
November 2016: Australian Orthodontic Journal
Keith Godfrey
This paper questions the adequacy of orthodontists' full appreciation of the issues associated with the routine prescription of extra- oral radiography, particularly that related to a high risk of thyroid gland exposure to ionising radiation. There does not appear to be adequate application of the ALARA principle in the consileration of justifiable options to minimise the cumulative effects of radiation exposure in young patients.
November 2016: Australian Orthodontic Journal
Sridhar Pasapula, Martyn Sherriff, Jeremy Breckon, Dirk Bister, Stefan Abela
INTRODUCTION: The validity, reliability and inter-method agreement of Peer Assessment Scores (PAR) from acrylic models and their digital analogues were assessed. METHOD: Ten models of different occlusions were digitised, using a 3 Shape R700 laser scanner (Copenhagen, Denmark). Each set of models was conventionally and digitally PAR-scored twice in random order by 10 examiners. The minimum time between repeat measurements was two weeks. The repeatability was assessed by applying Carstensen's analysis...
November 2016: Australian Orthodontic Journal
Anita Bonic, Mack Poon, Michael G Woods, Alan O Trounson
INTRODUCTION: Neural crest cells make up a transient migratory population of cells found in all vertebrate embryos. Great advances have been made over the past 20 years in clarifying the molecular basis of neural crest induction and, although much still remains unclear, it appears that it is a process involving several factors acting at different stages of embryogenesis. In the future, an understanding of the precise mechanisms involved in orofacial development, even at the earliest stages, may well be of use to all clinicians interested in the management of these tissues...
November 2016: Australian Orthodontic Journal
Venkateswaran Ananthanarayanan, Sridevi Padmanabhan, Arun B Chitharanjan
BACKGROUND: Titanium alloy mini-implants have become popular in recent times and have been extensively used and studied. Although corrosion resistance of orthodontic materials has always been of concern, this property has been the least explored. The present study aimed to assess the composition, surface characterisation and corrosion resistance of five commercially available mini-implants by assaying ion release in artificial saliva. METHODS: Ten mini-implants each from five companies were obtained: Group 1 - AbsoAnchor (Dentos Inc, South Korea); Group 2 - Microimplant Anchorage System (MIA, Biomaterials Korea); Group 3 - The Orthodontic Mini Anchorage System (TOMAS, Dentaurum, Germany); Group 4 - mini-implants (Denticon, Maharashtra, India); Group 5 - orthodontic mini-implants (lJ...
November 2016: Australian Orthodontic Journal
Allan Tan, Florence Bennani, W Murray Thomson, Mauro Farella, Li Mei
BACKGROUND: Appropriate screening and referral is important in delivering effective and timely orthodontic treatment. In New Zealand, dental therapists are usually the initial contact for oral health care (including the assessment of malocclusion) in child and adolescent patients. OBJECTIVE: To investigate the orthodontic screening and referral practices of dental therapists in New Zealand. METHODS: Ten registered dental therapists from Auckland and Dunedin were interviewed using a semi-structured approach...
November 2016: Australian Orthodontic Journal
Yanfang Yu, Mengjie Wu, Xuepeng Chen, Wen Li
BACKGROUND: A Class Il malocclusion is the most frequent sagittal skeletal disharmony presenting for orthodontic treatment. A transverse interarch discrepancy ITID) may be considered as a possible functional cause of a Class 11 relationship. OBJECTIVE: The purpose of the present study was to determine transverse interarch width dimensions before and after orthodontic therapy and their possible relationship with increased mandibular projection following treatment...
November 2016: Australian Orthodontic Journal
Orhan H Karatas, Ebubekir Toy, Abdullah Demir, Hatice Toy, Sumeyye Kozacioglu
AIM: Rapid maxillary expansion is performed to correct a skeletal transverse deficiency of the maxilla, which is a frequently- encountered orthodontic anomaly. Strontium ranelate (SrR) is a novel agent that has a dual action, involving anti-resorptive and bone-forming effects. The aim of this study was to evaluate the effects of systemically applied SrR on osteoblastic bone formation after maxillary expansion on the mid-palatal suture of rats using histological and immunohistochemical tests...
November 2016: Australian Orthodontic Journal
Christopher Turnock, Michael G Woods
AIM: To compare the effects of the Herbst appliance and the Activator at the completion of two-phase treatment, with respect to the vertical facial pattern (VFP) and to identify possible predictors of treatment effect. MATERIALS AND METHODS: Pretreatment, post-treatment and overall cephalometric change data were used to assess the dental and skeletal effects. Results for the change in mandibular length were also compared with changes reported for an untreated external control group...
November 2016: Australian Orthodontic Journal
Sharon Lewin
No abstract text is available yet for this article.
May 2016: Australian Orthodontic Journal
Keith Godfrey
For some years there has been unrest in the statistical world regarding the use of the p-value. It has been indicated that the significance of p-values is open to question, which therefore reduces the ability to measure the strength of evidence. This paper examines the use and misuse of the p-value and recommends consideration in its application.
May 2016: Australian Orthodontic Journal
Samuel C Bennett, Mithran S Goonewardene
BACKGROUND: Hemimandibular hyperplasia (HH), also known as hemimandibular hypertrophy, is characterised by excessive unilateral three-dimensional growth of the mandible after birth. Vertical unilateral elongation of the mandible becomes clinically evident as a rare form of vertical facial asymmetry. Aberrant growth of the facial skeleton affects the developing dentition and the dental compensatory mechanism is usually unable to maintain optimal occlusal relationships. The resulting malocclusion is effectively managed by combined surgical-orthodontic care to address the facial, skeletal and dental problems that confront clinicians...
May 2016: Australian Orthodontic Journal
Vandana Katyal, Benedict Wilmes, Manuel Nienkemper, M Ali Darendeliler, Wayne Sampson, Dieter Drescher
INTRODUCTION: The aim of the present study was to assess the skeletal, dental and soft tissue effects of a specific treatment protocol in consecutively treated patients who presented with a Class III malocclusion. Treatment involved the use of a Hybrid Hyrax (HH) in the maxilla, a Mentoplate in the mandible and the application of continuous intra-oral Class III elastics. METHOD: The treated group was comprised of seven males and seven females (mean pretreatment age 10...
May 2016: Australian Orthodontic Journal
Tony Weir
AIM: To demonstrate the use of the Invisalign appliance in lower incisor extraction cases. METHOD: Twelve patients, consecutively treated by the removal of a single lower incisor and Invisalign appliances, were selected from the author's private practice. Pretreatment, treatment and post-treatment photographic records were obtained and are presented. RESULTS: All cases completed treatment, with a mean treatment time of 42 weeks. Fifty percent of the cases required a brief period of refinement (average six weeks) at the end of the initial projected treatment period...
May 2016: Australian Orthodontic Journal
Kazem AL-Nimri, Mohamad Abo-Zomor, Sawsan Alomari
OBJECTIVE: To determine changes in mandibular position after the treatment of patients presenting with Class II division 2 malocclusions and to test the null hypothesis that there is posterior displacement of the mandible in these patients, in comparison with a control group of Class II division 1 subjects. MATERIALS AND METHODS: The assessed data consisted of pre- and post-treatment cephalometric radiographs of 77 subjects identified with Class II division 1 and Class II division 2 malocclusions matched according to age, gender and treatment duration...
May 2016: Australian Orthodontic Journal
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