Theoretical Considerations of Headgear Therapy: A Literature Review

1978 ◽  
Vol 5 (3) ◽  
pp. 145-152 ◽  
Author(s):  
D. E. J. Bowden
Keyword(s):  
Literature Review ◽  
Clinical Research ◽  
Clinical Response ◽  
Tooth Movement ◽  
Theoretical Concepts ◽  
Force Magnitude ◽  
Theoretical Considerations

The literature of headgear therapy is reviewed and used to explain some of the theoretical mechanical principles of tooth movement and anchorage control achieved by this method. Part 1, Mechanical Principles, is a review of force directions, centres of rotation, force magnitude and duration. In Part 2, Clinical Response and Usage, the clinical uses of different directions of force are examined. Some of the clinical research into the changes produced by different headgears is described. An attempt is made to draw conclusions from the theoretical concepts discussed which may be of aid to the clinician.

Theoretical Considerations of Headgear Therapy: A Literature Review 2. Clinical response and usage

1978 ◽  
Vol 5 (4) ◽  
pp. 173-181 ◽  
Author(s):  
D. E. J. Bowden
Keyword(s):  
Literature Review ◽  
Clinical Response ◽  
Force Systems ◽  
Theoretical Considerations

In Part 1 the literature on the direction and moment force systems of headgear therapy was discussed. The magnitude and duration of forces were briefly dealt with. In Part 2 the clinical response to the main directions of headgear force as reported in the literature will be described. Recommendations on the most appropriate direction and moment force systems for particular clinical situations will be made.

scholarly journals Enamel Reduction Techniques in Orthodontics: A Literature Review

2013 ◽  
Vol 7 (1) ◽  
pp. 146-151 ◽  
Author(s):  
Christos Livas ◽  
Albert Cornelis Jongsma ◽  
Yijin Ren
Keyword(s):  
Treatment Outcome ◽  
Literature Review ◽  
Clinical Research ◽  
Technical Aspects ◽  
Reduction Techniques ◽  
Enamel Reduction

Artificial abrasion of interproximal surfaces has been described for almost seventy years as orthodontic intervention for achievement and maintenance of ideal treatment outcome. A variety of terms and approaches have been introduced throughout this period implying a growing clinicians’ interest. Nevertheless, the widespread recognition of enamel stripping technique was initiated by the advent of bonded orthodontic attachments and a 2-article series of Sheridan in the 80’s. Since then, experimental and clinical research has been focused on the investigation of instrumentation efficacy and potential iatrogenic sequelae related to interproximal stripping. This review discusses the evolution, technical aspects and trends of enamel reduction procedures as documented in the literature.

Is prediction of clinical response to methotrexate in individual rheumatoid arthritis patients possible? A systematic literature review

2020 ◽  
Vol 87 (1) ◽  
pp. 13-23
Author(s):  
Nadia M.T. Roodenrijs ◽  
Marlies C. van der Goes ◽  
Paco M.J. Welsing ◽  
Janneke Tekstra ◽  
Jacob M. van Laar ◽  
...  
Keyword(s):  
Rheumatoid Arthritis ◽  
Literature Review ◽  
Clinical Response ◽  
Systematic Literature Review

scholarly journals Efficacy of biological disease-modifying antirheumatic drugs: a systematic literature review informing the 2016 update of the EULAR recommendations for the management of rheumatoid arthritis

2017 ◽  
Vol 76 (6) ◽  
pp. 1113-1136 ◽  
Author(s):  
Jackie L Nam ◽  
Kaoru Takase-Minegishi ◽  
Sofia Ramiro ◽  
Katerina Chatzidionysiou ◽  
Josef S Smolen ◽  
...  
Keyword(s):  
Rheumatoid Arthritis ◽  
Literature Review ◽  
Clinical Response ◽  
Dose Reduction ◽  
Systematic Literature Review ◽  
Phase Iii ◽  
Treat To Target ◽  
Disease Modifying Antirheumatic Drugs ◽  
Antirheumatic Drugs ◽  
Disease Modifying

ObjectivesTo update the evidence for the efficacy of biological disease-modifying antirheumatic drugs (bDMARDs) in patients with rheumatoid arthritis (RA) to inform European League Against Rheumatism (EULAR) Task Force treatment recommendations.MethodsMEDLINE, EMBASE and Cochrane databases were searched for phase III or IV (or phase II, if these studies were lacking) randomised controlled trials (RCTs) published between January 2013 and February 2016. Abstracts from the American College of Rheumatology and EULAR conferences were obtained.ResultsThe RCTs confirmed greater efficacy with a bDMARD+conventional synthetic DMARD (csDMARD) versus a csDMARDs alone (level 1A evidence). Using a treat-to-target strategy approach, commencing and escalating csDMARD therapy and adding a bDMARD in cases of non-response, is an effective approach (1B). If a bDMARD had failed, improvements in clinical response were seen on switching to another bDMARD (1A), but no clear advantage was seen for switching to an agent with another mode of action. Maintenance of clinical response in patients in remission or low disease activity was best when continuing rather than stopping a bDMARD, but bDMARD dose reduction or ‘spacing’ was possible, with a substantial proportion of patients achieving bDMARD-free remission (2B). RCTs have also demonstrated efficacy of several new bDMARDs and biosimilar DMARDs (1B).ConclusionsThis systematic literature review consistently confirmed the previously reported efficacy of bDMARDs in RA and provided additional information on bDMARD switching and dose reduction.

scholarly journals A Literature Review of Molecular Markers Predictive of Clinical Response to Cytotoxic Chemotherapy in Patients with Lung Cancer

2006 ◽  
Vol 1 (1) ◽  
pp. 31-37 ◽  
Author(s):  
Ikuo Sekine ◽  
John D. Minna ◽  
Kazuto Nishio ◽  
Tomohide Tamura ◽  
Nagahiro Saijo
Keyword(s):  
Lung Cancer ◽  
Molecular Markers ◽  
Literature Review ◽  
Clinical Response ◽  
Cytotoxic Chemotherapy

Clinical research evidence of acupoint injection: A systematic literature review

2014 ◽  
Vol 6 (6) ◽  
pp. 704-705
Author(s):  
Li-Qiong Wang ◽  
Wen-Yuan Li ◽  
Wen-Jing Xiong ◽  
Ning Liang ◽  
Yun-Jiao Zhang ◽  
...  
Keyword(s):  
Literature Review ◽  
Clinical Research ◽  
Systematic Literature Review ◽  
Research Evidence ◽  
Acupoint Injection

scholarly journals Force Magnitude and Duration Effects on Amount of Tooth Movement and Root Resorption in the Rat Molar

2008 ◽  
Vol 78 (3) ◽  
pp. 502-509 ◽  
Author(s):  
Carmen Gonzales ◽  
Hitoshi Hotokezaka ◽  
Masako Yoshimatsu ◽  
Joseph H. Yozgatian ◽  
M. Ali Darendeliler ◽  
...  
Keyword(s):  
Laser Scanning ◽  
Tooth Movement ◽  
Root Resorption ◽  
Three Dimensional ◽  
Nickel Titanium ◽  
Second Molar ◽  
Force Application ◽  
Surface Areas ◽  
Force Magnitude ◽  
Group A

Abstract Objective: To test the hypothesis that there is no difference in the effect of different continuous moderate to very heavy forces on root resorption or amount of tooth movement. Materials and Methods: In the study, 10, 25, 50 and 100 g mesial force were applied to the maxillary first molars of rat using nickel titanium closed-coil springs for 3 days, 14 days, and 28 days. The molars were extracted and the surface areas of the root resorption craters were measured using scanning electron microscope. The depths of the root resorption craters were measured using a three-dimensional laser scanning microscope. Tooth movement of the maxillary first molar was measured in relation to the maxillary second molar on digitized lateral cephalometric radiographs. Results: Three days after force application, the tooth movement was not proportionally related to force magnitude. However, 14 days of force application resulted in significantly more tooth movement in the 10, 25, and 50 g force groups than in the 100 g force group. A force application of 10 g produced significantly more tooth movement at 28 days than all the other three force applications. The largest and deepest resorption craters were observed in the disto-buccal root followed by disto-palatal, middle-buccal, middle-palatal, and mesial root. Root resorption and tooth movement increased over time from 3 to 28 days. As heavier forces were applied, greater root resorption occurred. Conclusion: The hypothesis is rejected. The light mesially oriented forces, as applied in this study, produced more tooth movement and less root resorption compared with heavier forces.

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