Which of the following is used to protect, dry, and keep the patient calm during dental procedures?

The rubber dam is a crucial tool used in dentistry to protect the patient during various procedures. It creates a barrier between the oral environment and the area being treated, helping to keep the tooth dry and free from saliva. This dry field is essential for achieving successful bonding of dental materials and enhances the visibility of the working area, allowing the clinician to perform procedures more effectively.

Additionally, the rubber dam can help keep the patient calm by isolating them from the sights and sounds of the dental environment. It reduces anxiety by limiting the number of stimuli reaching the patient, which can be particularly beneficial for those with dental phobias. This calming effect contributes to a smoother treatment experience for both the patient and the dentist.

Other options listed do not serve the dual purpose of protection and patient comfort. For instance, a Dappen dish is primarily used to hold dental materials like impression material or to mix dental cement. A cement spatula is a tool designed for mixing various dental cements and does not play a role in patient comfort. A mandrel disc is used in a dental handpiece for polishing and shaping materials and does not provide protection or calm the patient during a procedure.