Your browser doesn't support javascript.
loading
Show: 20 | 50 | 100
Results 1 - 5 de 5
Filter
1.
Eur J Orthod ; 40(5): 480-487, 2018 09 28.
Article in English | MEDLINE | ID: mdl-29228139

ABSTRACT

Background/Objective: This study was conducted to explore authorship characteristics and publication trends of all orthodontic randomized controlled trials (RCTs), systematic reviews (SRs), and meta-analyses (MAs) published in non-orthodontic journals with impact factor (IF). Materials and methods: Appropriate research strategies were developed to search for all articles published until December 2015, without restrictions regarding language or publication status. The initial search generated 4524 results, but after application of the inclusion criteria, the final number of articles was reduced to 274 (SRs: 152; MAs: 36; and RCTs: 86). Various authorship characteristics were recorded for each article. Frequency distributions for all parameters were explored with Pearson chi-square for independence at the 0.05 level of significance. Results: More than half of the included publications were SRs (55.5 per cent), followed by RCTs (31.4 per cent) and MAs (13.1 per cent); one hundred seventy-eight (65 per cent) appeared in dental journals and 96 (35 per cent) were published in non-dental journals. The last decade was significantly more productive than the period before 2006, with 236 (86.1 per cent) articles published between 2006 and 2015. European countries produced 51.5 per cent of the total number of publications, followed by Asia (18.6 per cent) and North America (USA and Canada; 16.8 per cent). Limitations: Studies published in journals without IF were not included. Conclusions/Implications: Level-1 evidence orthodontic literature published in non-orthodontic journals has significantly increased during 2006-15. This indicates a larger interest of other specialty journals in orthodontic related studies and a trend for orthodontic authors to publish their work in journals with impact in broader fields of dentistry and medicine.


Subject(s)
Authorship , Meta-Analysis as Topic , Orthodontics/statistics & numerical data , Randomized Controlled Trials as Topic/statistics & numerical data , Review Literature as Topic , Asia , Bibliometrics , Europe , Humans , Journal Impact Factor , North America , Orthodontics/trends , Periodicals as Topic/statistics & numerical data , Periodicals as Topic/trends , Publishing/statistics & numerical data , Publishing/trends
2.
Work ; 52(3): 559-79, 2015.
Article in English | MEDLINE | ID: mdl-26409367

ABSTRACT

BACKGROUND: As professionals work longer hours and live longer there have been concerns regarding the Work related Musculoskeletal Disorders (WMSD) affecting both professional and personal lives. Moreover, past decade has seen a surge in interest in all allied health sciences personnel with self reporting cross sectional studies. OBJECTIVE: Health professionals often suffer WMSD due to occupational stress. It is important to assess the problem in order to find ways to prevent it. Hence, the focus of this cross-sectional survey. The aim was to investigate the prevalence and risk factors of WMSD between Australian dentists and orthodontists. MATERIALS AND METHOD: A postal survey was sent to 447 Australian orthodontists and 450 Queensland dentists using the universal Nordic scale previously piloted at UQ and refined for this cross-sectional study. Questions were directed towards individuals, workplace and psychosocial variables and were designed to gather information regarding health, lifestyle, education, awareness of musculoskeletal problems and current preventative strategies. RESULTS: A high prevalence of musculoskeletal problems was found for both dentists (88.9%) and orthodontists (83.6%) reported in the last 12 months. The main predictor in both groups was increased work stress. Less than a third of those professionals surveyed had received education regarding dental practice ergonomics during their tertiary education. CONCLUSION: Dentists and orthodontists experienced a high rate of musculoskeletal problems which were associated with increased levels of stress at work. Further research should be directed toward interventions aimed at reducing stress in the work environment as well as improving work posture.


Subject(s)
Dentistry , Hypesthesia/epidemiology , Musculoskeletal Pain/epidemiology , Occupational Diseases/epidemiology , Adult , Australia/epidemiology , Cross-Sectional Studies , Female , Humans , Male , Middle Aged , Occupational Diseases/prevention & control , Orthodontics , Prevalence , Risk Assessment , Risk Factors , Stress, Psychological/complications
3.
Work ; 48(1): 37-45, 2014.
Article in English | MEDLINE | ID: mdl-24004769

ABSTRACT

BACKGROUND: Work-related musculoskeletal disorders (WMSD's) are on the rise worldwide. These disorders have numerous repercussions, from serious ill-health effects at the individual level to decreased workplace efficiency and productivity affecting not only quality of life but the economy. OBJECTIVE: This review aims to provide an overview of WMSD's in the dental profession, more specifically, among general dental practitioners and specialist orthodontists. METHODS: Literature was hand searched from Pubmed with greater emphasis on contemporary literature as the professionals demands have evolved over the years. RESULTS: While there have been numerous papers published relating to the prevalence of ergonomic problems among general dentists, orthodontists have received little investigation. CONCLUSION: This review highlights the need for research into the risk factors of WMSD's in the dental profession (both general dentistry and orthodontics), as this would provide a more direct approach for prevention which is essential as professionals work for longer years in practice.


Subject(s)
Ergonomics , Musculoskeletal Diseases/physiopathology , Occupational Diseases/physiopathology , Occupational Health , Australia , Dentists/statistics & numerical data , Female , Humans , Male , Musculoskeletal Diseases/epidemiology , Musculoskeletal Diseases/etiology , Musculoskeletal Pain/epidemiology , Musculoskeletal Pain/etiology , Musculoskeletal Pain/physiopathology , Occupational Diseases/epidemiology , Occupational Diseases/etiology , Orthodontics/statistics & numerical data , Prevalence , Risk Assessment
4.
Am J Orthod Dentofacial Orthop ; 139(4): e305-13, 2011 Apr.
Article in English | MEDLINE | ID: mdl-21457836

ABSTRACT

INTRODUCTION: The masticatory muscles are considered to be important determinants of facial form, but little is known of the muscle spindle reflex characteristics and their relationship, if any, to face height. The aim of this study was to determine whether spindle reflexes, evoked by mechanical stimulation of an incisor and recorded on the masseter muscle, correlated with different facial patterns. METHODS: Twenty-eight adult volunteers (16 women; ages, 19-38 years) underwent 2-N tap stimuli to their maxillary left central incisor during simulated mastication. Reflexes were recorded during local anesthesia of the stimulated tooth to eliminate the contribution from periodontal mechanoreceptors. Surface electromyograms of the reflex responses of the jaw muscles to these taps were recorded via bipolar electrodes on the masseter muscle and interpreted by using spike-triggered averaging of the surface electromyograms. Lateral cephalometric analysis was carried out with software (version 10.5, Dolphin, Los Angeles, Calif; and Mona Lisa, Canberra, Australia). RESULTS: Two-newton tooth taps produced principally excitatory reflex responses beginning at 17 ms poststimulus. Correlation analysis showed a significant relationship between these muscle spindle reflexes and facial heights: specifically, shorter face heights were associated with stronger spindle reflexes. This correlation was strongest between the derived measure of masseter length and the spindle reflex strength during jaw closure (r = -0.49, P = 0.008). CONCLUSIONS: These results suggest that a similar muscle spindle stimulus will generate a stronger reflex activation in the jaw muscles of patients with shorter faces compared with those with longer faces. This finding might help to explain the higher incidence of clenching or bruxism in those with short faces and also might, in the future, influence the design of orthodontic appliances and dental prostheses.


Subject(s)
Mandible/physiology , Masseter Muscle/anatomy & histology , Muscle Spindles/physiology , Reflex/physiology , Adult , Cephalometry , Electromyography , Evoked Potentials, Motor/physiology , Excitation Contraction Coupling/physiology , Female , Humans , Incisor/physiology , Isometric Contraction/physiology , Mandible/anatomy & histology , Mandibular Condyle/anatomy & histology , Masseter Muscle/physiology , Maxilla/anatomy & histology , Muscle Tonus/physiology , Physical Stimulation , Range of Motion, Articular/physiology , Time Factors , Vertical Dimension , Vibration , Young Adult
5.
J Coll Physicians Surg Pak ; 15(10): 634-7, 2005 Oct.
Article in English | MEDLINE | ID: mdl-19810304

ABSTRACT

OBJECTIVE: To compare the results of hard and soft attractive magnet combinations to the gold standard Neodymium Iron Boron Magnets used for extrusion of impacted maxillary canines. DESIGN: Experimental and comparative study. PLACE AND DURATION OF STUDY: Eastman Dental Institute and Hospital, London, UK in collaboration with Department of Physics and Astronomy University College of London (UCL) during 1996-1998. MATERIAL AND METHODS: In vitro experiments with combinations of hard and soft magnets of different morphologies. Load Cell Transducer was used to record the force levels in grams with magnets placed in different vertical, horizontal and angular offsets. RESULTS: Three-dimensional mesh plots were created to visualize force level decay with increasing distance. The results were compared with previous study on hard magnet combinations only and observed for "edge effect". The present study force levels were very low albeit the edge effect was negligible. CONCLUSION: Although the edge effect phenomenon present with powerful hard magnets was minimal or nearly absent with the hard and soft magnet combination--the overall force levels were too low to be of any use in clinical scenario for extrusion of deep impacted canines.


Subject(s)
Magnetic Field Therapy , Tooth, Impacted/therapy , Equipment Design , Humans
SELECTION OF CITATIONS
SEARCH DETAIL
...