Which dental instruments are commonly used for coronal polishing?

The correct choice highlights the instruments that are specifically designed for coronal polishing, which is a procedure aimed at removing dental plaque and stains from the coronal surfaces of the teeth. The prophy angle is a dental handpiece that allows for the attachment of various polishing cups or brushes, which are essential for performing effective polishing. The rubber cup is typically used to hold the polishing paste and is flexible enough to adapt to the contours of the teeth, providing thorough coverage during the polishing process. The polishing paste contains abrasive agents that help to achieve a smooth and shiny surface on the enamel.

The other options include tools that serve different functions in dentistry. Scalers and ultrasonic devices are primarily used for removing calculus and plaque from the tooth surfaces, rather than polishing them. Hand mirrors and explorers are diagnostic tools utilized for examination and assessment rather than for polishing procedures. Lasers and curing lights are sometimes used in disciplinary procedures related to soft or hard tissues, but they are not appropriate tools for coronal polishing, which focuses on enhancing the esthetic appearance of the teeth.