"PhD Student1: “You know, studies with positive results are more likely to be accepted for publication than studies with negative results. Shouldn’t we take that into account when submitting our paper?” PhD Student2: “Waaaw, I didn’t know that. Moreover, my teacher always told me that negative results are also results. We are misleading the readers. And what about fraude?”
Dental materials and more specifically implant industry is evolving at high speed. Choosing the right implant component is not easy as so many different designs for specific situations have been launched.
Is there evidence the the concical-shaped implant design is preferred above the traditional butt joint design? What is the impact for the patient? Will the gums around the implant heal in a different way on the long term? How can I formulate the research question correctly?
Relevant online resources:
Recommended online resources on Publication bias:
Recommended online resources on sources of digital information and levels of evidence:
www.ncbi.nlm.nih.gov/pubmed www.ncbi.nlm.nih.gov/pubmed/clinical/ www.cebm.net
The Evidence Locator provides resources of evidence-based dentistry information http://www.ncbi.nlm.nih.gov/pubmed/18783754
Evidence-based dentistry: Challenges for education and dental research. Information missing from databases and access problems http://www.jokstad.no/
Recommended online resources on search strategies for digital databases based on formulated clinical scenarios:
EBD Workshop -Collecting the Evidence
EBD Lecture- EBD a global revolution?
EBD Lecture – Getting evidence into practice
2.In Cochrane Library http://www.thecochranelibrary.com and http://www.cochranelibrary.com/topic/Dentistry%20%26%20oral%20health/
The Cochrane Database of Systematic Reviews
Database of Abstracts of Reviews of Effects (DARE)
The Cochrane Central Register of Controlled Trials (CENTRAL)
The Cochrane Database of Methodology Reviews
The Cochrane Methodology Register
Health Technology Assessment Database (HTA)
NHS Economic Evaluation Database (NHS EED)
Optional texts local/national sites:
Local ebm resources