Barone A, Borgia V, Covani U, Ricci M, Piattelli A, Iezzi G Flap versus flapless procedure for ridge preservation in alveolar extraction sockets: a histological evaluation in a randomized clinical trial. Clin Oral Implants Res. 2015 Jul;26(7):806-13. doi: 10.1111/clr.12358. Epub 2014 Mar 1.
Barone A, Ricci M, Tonelli P, Santini S, Covani U Tissue changes of extraction sockets in humans: a comparison of spontaneous healing vs. ridge preservation with secondary soft tissue healing. Clin Oral Implants Res. 2013 Nov;24(11):1231-7. doi: 10.1111/j.1600-0501.2012.02535.x. Epub 2012 Jul 12.
Covani U, Ricci M, Bozzolo G, Mangano F, Zini A, Barone A Analysis of the pattern of the alveolar ridge remodelling following single tooth extraction. Clin Oral Implants Res. 2011 Aug;22(8):820-5. doi: 10.1111/j.1600-0501.2010.02060.x. Epub 2010 Dec 29.
Engler-Hamm D, Cheung WS, Yen A, Stark PC, Griffin T Ridge preservation using a composite bone graft and a bioabsorbable membrane with and without primary wound closure: a comparative clinical trial. J Periodontol. 2011 Mar;82(3):377-87. doi: 10.1902/jop.2010.090342. Epub 2010 Nov 2.
Schropp L, Wenzel A, Kostopoulos L, Karring T Bone healing and soft tissue contour changes following single-tooth extraction: a clinical and radiographic 12-month prospective study. Int J Periodontics Restorative Dent. 2003 Aug;23(4):313-23.
A Prospective Randomized-controlled Multicenter Clinical and Histological Study of Extraction Site Augmentation With mp3 vs. Apatos
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.
