Management of Maxillary Incisors With Middle-Third Root Perforation: A Case Report.

Root canal perforations are frequent but critical complications in endodontic treatments, which can pose a risk of irreversible damage to the affected tooth. These perforations typically occur during root canal preparation or endodontic post placement, presenting significant therapeutic challenges. The main objective in the management of such complications is to seal the perforation, thus preventing bacterial invasion and tooth loss.

Do Different Application Modes Improve the Bonding Performance of Self-etching Ceramic Primer to Lithium Disilicate and Feldspathic Ceramics?

Purpose: To evaluate the effect of different application modes of a recently introduced self-etching ceramic primer on the microshear bond strength (μSBS) and ceramic surface-etching pattern of two glass-ceramic surfaces.

Materials And Methods: Twenty-two CAD/CAM blocks of lithium disilicate (LD) and feldspathic glass ceramic (VTR) were each cut into 4 rectangular sections (n = 88 for ceramic surface). The LD and VTR specimens were divided into one control group (hydrofluoric acid + silane coupling agent [HF+SII]), and 10 experimental groups using Monobond Etch and Prime (MEP) applied for a combination of scrubbing times (5, 10, 20, 40, and 60 s) and reaction times (20 or 40 s).