View clinical trials related to Dental Bonding.
Filter by:A single-operator, randomized controlled trial (RCT) will be conducted to evaluate the clinical effectiveness of moisture insensitive primers (MIPs) in bonding molar tubes under moisture contaminated conditions by comparing the clinical bond failure and survival rate of molar tubes using two MIPs which are Transbond ™ MIP (3M Unitek Dental Products, Monrovia, CA, USA) and Assure® Plus-All Surface Light Cure Bonding Primer (Reliance, Itasca, IL, USA).
Background: The aim of this study was to examine the effect of self-etch primer (SEP) application on the bond failure rate of a mandibular bonded lingual retainer over 24 months. Materials and Methods: After the removal of the orthodontic appliances, the lingual retainers, which were made of six-stranded stainless steel wire 0.0215 inches in diameter, wiil bent and bond onto the lingual surface of all mandibular anterior teeth. The study will performed using a split-mouth design. In the study group, the SEP will be administired to the teeth's lingual surfaces. In the control group, they will etch using 37% phosphoric etchant liquid gel. After etching, the primer wiil be applied. The adhesive resin was applied and the lingual retainer was fitted. The patients will be re-valuated over 24 months. The first bond failures and the amount of adhesive remaining on the tooth will be recorded as the adhesive remnant index (ARI) scores. The chi-square test will be used to compare the bond failure rates and ARI scores between the groups. The survival rates of the retainers will be estimated using the Kaplan-Meier test. The significance level will P < 0.05.
The windowed direct-indirect bonding is a new bonding technique that could provide a simple and cheap method for fast and precise brackets bonding. There are still not enough studies to evaluate the effectiveness of this method in terms of accuracy, bonding time, bonding failure and cost. This study is designed to answer these questions and compare the forementioned bonding technique with digital indirect bonding and finally provide the clinician a recommendation on the best bonding technique. This study introduces as well a new method of fabrication of the windowed template using Fusion Deposition Modeling (FDM) 3D printing technology.
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.
Objective In addition to examining the transmission accuracy of rigid and non-rigid IDB's the aim of the study is to determine the 'lost rate' during the placement. The 'lost rate' is the percentage frequency of brackets that have no adhesion to the model after the bonding has taken place. Hypothesis The main hypothesis does not describe a significant deviation of the digitally planned to the actually placed bracket position in directions and angles described. The secondary hypothesis is the assumption of no significant difference between the accuracy and lost rate of the two materials. Method 24 orthodontic patients treated with multibracket appliance will be included for the planned study. In order to increase the reproducibility of the acquired data four different model situations are included. Objective The aim of the study is a scientific examination of the accuracy of digital printed bonding trays using two materials to support the decision process of the potential user and their dental laboratories. The study allows an insight into the technical manufacturing process and its workflow.
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.