Which of the following best describes a class III cavity preparation?

A Class III cavity preparation specifically involves cavities located on the proximal surfaces of anterior teeth, which are the front teeth including the incisors and canines. This classification is important because Class III cavities are typically not visible from the front of the mouth, and they most often require restoration with materials that are both aesthetically pleasing and functional.

Understanding the different classes of cavity preparations is vital for dental professionals, as it helps in determining the appropriate treatment and materials needed for restoration. Class III cavities typically do not involve the incisal edges (which would be classified differently), nor do they relate to occlusal surfaces or only the buccal or lingual surfaces of the teeth, which belong to different classifications such as Class I, Class II, and Class V, respectively. This classification helps guide the clinician in terms of technique and materials that will be used for optimal patient outcomes.