832 results match your criteria Australian Orthodontic Journal[Journal]


Orthodontic considerations for impacted and ectopic teeth.

Authors:
Richard J Olive

Aust Orthod J 2017 Feb;Spec No:99-104

This review article describes the changing approach to the management of various impacted teeth. Currently, more third molars are being retained, and it is likely that more patients will develop impactions than a generation ago because of non-extraction orthodontic treatment plans. There are still valid reasons for the surgical removal of selected third molars during the teenage years, during which time impaction can be anticipated to avoid the higher rate of morbidity associated with later removal. Read More

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February 2017

Management of missing mandibular second premolars: a review.

Aust Orthod J 2017 Feb;Spec No:87-98

Tooth agenesis is the most common developmental dental anomaly and it is frequently associated with other dento-skeletal disturbances, such as structural variations of other teeth, late dental eruption, transpositions and crowding. Except for the third molars, the mandibular second premolars are the most commonly missing teeth. Oral rehabilitation of patients with missing mandibular premolars often requires a multi-disciplinary approach, and usually results in prolonged treatment time and a greater burden of care. Read More

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February 2017

3D facial and dento-alveolar imaging.

Aust Orthod J 2017 Feb;Spec No:73-86

This article reviews three-dimensional (1D) surface scanning contrasted with 3D imaging. Precise techniques are now available for capture of the face and craniofacial structures as well as improved introoral scanning for the production of virtual 3D casts of the dentition. Facial and intraoral scanners have established an accuracy that makes them viable for use in the clinical and research arenas. Read More

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February 2017

What is the truth behind the smile?

Aust Orthod J 2017 Feb;Spec No:65-72

A number of arguments surround orthodontics and orthodontic treatment and this article aims to discuss the current thinking and evidence base associated with these controversies. Read More

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February 2017

Brackets, epitopes and flash memory cards: a futuristic view of clinical orthodontics.

Authors:
Milton R Sims

Aust Orthod J 2017 Feb;Spec No:56-64

Orthodontics continues to be a profession anchored in traditional technology using appliances that cause inflammatory periodontal ligament (PDL) responses. Existing concepts of biological tooth movement based largely on histological tissue observations and the application of physical principles require major reassessment. In the next millennium, the genome revolution and knowledge of protein production and control could lead to the genetic correction of dentofacial anomalies and pain-free, biomolecular methods of malocclusion correction and long-term stability. Read More

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February 2017

Orthodontic Education.

Authors:
E Storey

Aust Orthod J 2017 Feb;Spec No:34-39

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February 2017

Minimizing publication bias.

Authors:
Michael Harkness

Aust Orthod J 2017 Feb;Spec No:22-23

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February 2017

Chaos theory and fractals.

Authors:
B Mollenhauer

Aust Orthod J 2017 Feb;Spec No:9-21

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February 2017

True intrusion of maxillary first molars with zygomatic and palatal miniscrew anchorage: a case report.

Aust Orthod J 2016 Nov;32(2):233-240

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. Read More

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November 2016

The Hawlix: a simple and aesthetic prosthetic- orthodontic retainer.

Aust Orthod J 2016 Nov;32(2):229-232

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. Read More

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November 2016

Effectiveness of photographs of study models for IOTN scoring.

Aust Orthod J 2016 Nov;32(2):221-228

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. Read More

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November 2016

Short-term treatment effects of the quad-helix appliance on dentofacial morphology of hyperdivergent patients.

Aust Orthod J 2016 Nov;32(2):211-220

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. Read More

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November 2016

The effects of blocking N/OFQ receptors on orofacial pain following experimental tooth movement in rats.

Aust Orthod J 2016 Nov;32(2):206-210

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. Closed coil springs were ligated between the upper incisors and first molar to exert an orthodontic force (40 g) between the teeth. Read More

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November 2016

A computed tomographic, mixed dentition, space analysis comparison.

Aust Orthod J 2016 Nov;32(2):199-205

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'. Read More

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November 2016

Orthodontists and the thyroid gland.

Authors:
Keith Godfrey

Aust Orthod J 2016 Nov;32(2):193-198

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. Read More

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November 2016

Comparison of validity, repeatability and reproducibility of the Peer Assessment Rating (PAR) between digital and conventional study models.

Aust Orthod J 2016 Nov;32(2):184-192

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. Read More

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November 2016

Expression of neural crest markers by human embryonic stem cells: an introductory project.

Aust Orthod J 2016 Nov;32(2):175-183

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. Read More

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November 2016

A comparative evaluation of ion release from different commercially-available orthodontic mini-implants - an in-vitro study.

Aust Orthod J 2016 Nov;32(2):165-174

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. Read More

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November 2016

A qualitative study of orthodontic screening and referral practices among dental therapists in New Zealand.

Aust Orthod J 2016 Nov;32(2):155-164

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. Read More

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November 2016

Correction of the transverse discrepancy-induced spontaneous mandibular protrusion in Class II Division 1 adolescent patients.

Aust Orthod J 2016 Nov;32(2):148-154

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. Read More

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November 2016

Effects of strontium ranelate on sutural bone formation: a histological and immunohistochemical study.

Aust Orthod J 2016 Nov;32(2):139-147

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. Read More

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November 2016

The Herbst appliance and the Activator: influence of the vertical facial pattern.

Aust Orthod J 2016 Nov;32(2):130-138

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. Read More

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November 2016

Fresh stirrings among statisticians: statistical commentary.

Authors:
Keith Godfrey

Aust Orthod J 2016 May;32(1):109-12

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. Read More

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