Active clinical trials for "Tooth, Nonvital"

RATIONALE All-ceramic endocrowns are bonded to the tooth using adhesive resins creating strong bonds to the tooth structure resulting in strengthening effect and reducing the need for post and core. various CAD/CAM materials can be used for the fabrication of endocrowns including lithium-disilicate reinforced glass-ceramics, feldspathic ceramics, in ceram alumina and in ceram spinell as well as hybrid ceramics and composites. Fewer data are available on the clinical performance of the different materials used for endocrowns. With the rapid innovation in the dental restorative materials clinicians are sometimes confused when selecting the best restorative material to restore an endodontically treated tooth with an endocrown. This is due to lack of data with regard to clinical performance of these restorations as well as the degree of patient satisfaction. OBJECTIVES P= Endodontically treated teeth indicated for endocrown I1= Feldspathic endocrown I2= Hybrid endocrown C= IPS e.max Endocrown O= Clinical performance Research question In patients with endodontically treated teeth requiring endocrown restorations, what are the clinical performance and the level of patient satisfaction of cerasmart endocrown versus lithium disilicate (e-max) ceramic endocrowns?

The aims of this retrospective analysis are (1) to evaluate the success rate of a non-surgical retreatment of teeth with broken file instrument into the canal using ultrasounds, microscope and a modified spinal needle, (2) to assess the outcome of the treatment if the remaining fragment was left, bypassed or removed from the root canal in terms of survival rate of the treated teeth after a 5-years follow up period.

The aim of this study was to evaluate the survival rate and healing time of compromised teeth and seriously compromised teeth that were endodontically treated in patients which received bisphosphonate therapy . Clinical complications, success and survival rate was reported. Mean clinical parameters, clinical symptoms and presence of periapical radilucency were recorded.

The color change of endodontically treated teeth is a common concern in clinical practice. The objective of this study will be to evaluate, in vivo, the color change (ΔE00) caused by endodontic treatment. A observational retrospective study will be conducted to evaluate the ΔE00 of anterior (incisors and canines) and posterior (premolar) teeth treated at a private clinic, regardless of technique, treatment time and sealer used. In this study the ΔE00 will be evaluated using the measurements obtained in the homologous tooth (without endodontic treatment) versus the measurement obtained from the tooth treated endodontically. The values of ΔE00 obtained for each sealer, cut and time will be analyzed by multifactorial analysis to verify associations of the outcomes with the ΔE00.

In-vitro studies do not represent the actual masticatory environment and cannot simulate the intricate chewing pattern. Hence, there is a need for an in vivo study evaluating the wear potential of the newly introduced strength - color gradient multilayered zirconia IPS e.max ZirCAD Prime (5Y-TZP/3Y-TZP) and compare it to Lithium Disilicate IPS e.max CAD which has proven to have favorable wear patterns.

The aim of this study is to evaluate chipping and the degree of natural enamel loss opposing to monolithic zirconia compared to veneered zirconia restoration.