crevice the rigidity factor will also mean that the instrument is less likely to break off in a deeper crevice when used the instrument is placed against the side of a tooth and inserted between the tooth and the gum into the base of the crevice until a slight resistance is felt by the user the asymmetrical alignment of the triangular section provides for improved ease in handling and insertion in the crevice since a user most often will hold the instrument in one hand thereby permitting lateral angle changes relative to the position of the tooth in the mouth this process is performed on the mesial and distal aspects of each tooth to be checked or monitored the lingual and cheek portion of a tooth may be checked if the user feels confident in the use of the instrument in these areas the distal end of the instrument or the staged or calibrated areas will be noted by the user so they will be able to determine their periodontal status the instrument is next removed from one area of a tooth to the next area or to another tooth of concern and this process is repeated an information or instruction book will discuss and show the user a course of treatment they should seek in relation to their specific staged or calibrated areas they reach within their crevice as illustrated in the instruction booklet the user of the kit may utilize it as an initial device to determine their generalized periodontal health or the user may be instructed by his her dental team to monitor specific areas of concern the information or instruction book will explain a reading.