DANB General Chairside Practice Test

What classification of carious lesions forms on the occlusal surfaces or the buccal and lingual pits and grooves of posterior teeth?

1. A) Class II

2. B) Class I

3. C) Class III

4. D) Class IV

The correct answer is: B) Class I

The classification of carious lesions that occur on the occlusal surfaces or the buccal and lingual pits and grooves of posterior teeth is identified as Class I. This classification focuses specifically on the areas of the tooth most susceptible to decay due to their anatomy. The occlusal surfaces of molars and premolars, as well as the pits and grooves found on these teeth, create ideal environments for plaque accumulation, and subsequently, caries development. Class II lesions, on the other hand, refer to caries that develop on the interproximal surfaces of posterior teeth, while Class III involves caries on the interproximal surfaces of anterior teeth. Class IV is designated for caries that affect the mesial or distal surfaces of anterior teeth and also involve the incisal edge. This clarification helps distinguish the specific areas of the teeth affected by decay, making it essential for accurate diagnosis and treatment planning.