4 Clinical Trials for Various Conditions
This study evaluates the transfer accuracy of 3D-printed trays for indirect bonding of orthodontic brackets in vivo. Accurate placement of orthodontic brackets at the beginning of treatment improves treatment efficiency and shortens treatment time. Indirect bonding is a method of placing orthodontic brackets on a plaster or digital model of the dentition, followed by the transfer of these brackets to the patients' teeth using a transfer tray. Various indirect bonding methods have been developed with the aim of improved bracket positioning and reduced chair time. The success of these methods ultimately depends on how reliably the precise positioning of the brackets on the model can be transferred to the patient's teeth.
Purpose: To evaluate the performance of several dental adhesives used for bonding tooth-colored fillings to teeth 6 years after the fillings have been placed. Participants: Subjects which had participated in the study entitled "Clinical Evaluation of New Total-Etch and Self-Etch Dental Adhesives" (IRB Study #07-0673). Procedures (methods): Fillings that had been placed 6 years ago will be evaluated by a direct, visual examination. Close-up intra-oral clinical photographs of each filling will be made. An impression of the filling may be obtained. The specific study aim of this 6-year recall of the patients treated in IRB Study #07-0673 is to evaluate the fillings placed according to the following characteristics: Retention; Color match; Cavosurface margin discoloration; Secondary caries; Anatomic form; Marginal adaptation and/or integrity; Post-operative sensitivity.
This is a prospective, controlled, within-subject, randomized, single-center study comparing Scotchbond Universal Plus and Scotchbond Universal adhesives when used with Filtek restorative. The study will enroll a minimum of 46 Subjects with Class-V non-carious cervical lesion (NCCL) on a minimum of two teeth.
Antimicrobial therapy can lead to disruption of the gut microbiome and infection with Clostridioides difficile, a disease associated with high morbidity and mortality, particularly among the elderly. Drawing on observations that pet ownership and close contact with pets are protective against colonization with C. difficile and recurrence of C. difficile infection, the proposed study will test the hypothesis that microbiota that provide colonization resistance against C. difficile are shared between patients and their pets and that pet contact can mitigate antimicrobial-associated gut dysbiosis and the risk of C. difficile infection. This study will further define epidemiologic and pathophysiologic characteristics of C. difficile infection and gut microbiome dysbiosis that could enhance therapeutic options for these conditions, potentially through non-invasive interventions involving animal contact.