Dental Caries — Clinical Trial of the Effect of Different Categories of Adhesive System
Citation(s)
Chee B, Rickman LJ, Satterthwaite JD Adhesives for the restoration of non-carious cervical lesions: a systematic review. J Dent. 2012 Jun;40(6):443-52. doi: 10.1016/j.jdent.2012.02.007. Epub 2012 Feb 18. Review.
Eliguzeloglu Dalkilic E, Omurlu H Two-year clinical evaluation of three adhesive systems in non-carious cervical lesions. J Appl Oral Sci. 2012 Mar-Apr;20(2):192-9.
Heintze SD, Blunck U, Göhring TN, Rousson V Marginal adaptation in vitro and clinical outcome of Class V restorations. Dent Mater. 2009 May;25(5):605-20. doi: 10.1016/j.dental.2008.11.004. Epub 2009 Jan 14.
Moosavi H, Kimyai S, Forghani M, Khodadadi R The clinical effectiveness of various adhesive systems: an 18-month evaluation. Oper Dent. 2013 Mar-Apr;38(2):134-41. doi: 10.2341/12-110-CR. Epub 2012 Aug 23.
Interventional studies are often prospective and are specifically tailored to evaluate direct impacts of treatment or preventive measures on disease.
Observational studies are often retrospective and are used to assess potential causation in exposure-outcome relationships and therefore influence preventive methods.
Expanded access is a means by which manufacturers make investigational new drugs available, under certain circumstances, to treat a patient(s) with a serious disease or condition who cannot participate in a controlled clinical trial.
Clinical trials are conducted in a series of steps, called phases - each phase is designed to answer a separate research question.
Phase 1: Researchers test a new drug or treatment in a small group of people for the first time to evaluate its safety, determine a safe dosage range, and identify side effects.
Phase 2: The drug or treatment is given to a larger group of people to see if it is effective and to further evaluate its safety.
Phase 3: The drug or treatment is given to large groups of people to confirm its effectiveness, monitor side effects, compare it to commonly used treatments, and collect information that will allow the drug or treatment to be used safely.
Phase 4: Studies are done after the drug or treatment has been marketed to gather information on the drug's effect in various populations and any side effects associated with long-term use.
