Figure
2.
The explorer is often of limited use in the diagnosis of pit and fissure caries since fissures are frequently narrower than the explorer tip. Therefore, the tool would not have aided in the diagnosis of this undetected lesion.(Photo courtesy of Quintessence Publishing Co., Inc. Paterson, et al. Modern concepts in diagnosis and treatment of fissure caries. Chicago: Quintessence; 1991:14.)