Sealant State Exam Questions And Answers

Child classified at moderate risk for caries - ANS frequent sugar exposure, w/ compromised oral hygiene Adults w/ high risk demonstrates following criteria - ANS 3 or a more caries in past 3 years Factors contributing to the formation of caries - ANS Fissures less than .1mm wide & enamel at base of fissure thinner than other areas of the tooth Fissure described as - ANS Imperfect joining of enamel & linear fault A pit is described as - ANS Small fault resulting from noncoalesced joining of enamel Primary cause of dental caries - ANS By products of plaque & bacteria what best describes incipient caries - ANS starts as decalcification & if stopped can repair itself Remineralization occurs when - ANS Calcium & phosphate in saliva is absorbed into enamel criteria for selecting teeth for sealants - ANS Placed on adult teeth w/ no caries, deep retentive, narrow pits and fissures Who can apply sealants - ANS RDAEF, RDA completed state board course, hygienist dentist When 1st introduced problem most pronounced - ANS Retention Characteristic of etchant material - ANS Dissolves some of interprismatic cement between enamel rods. Applied to susceptible pits & fissures Helpful techniques in placement of pits & fissures - ANS Enamel conditioning w/ 35-50% phosphoric acid gel before sealant resin. Teeth done 1 quadrant at a time. Surface not appearing frosty should be re-etched Characteristics of drying agent include - ANS Minimizes microleakage, enhances moisture removal from enamel, lowers surface, tension from enamel A photopolymerizing sealant material - ANS is light cured Mechanism by which sealants adhere to tooth - ANS Sealants retained by adhesive forces. Bonding sealant to enamel through mechanical forces. After sealant placement outer layer will - ANS Not polymerize, remains slick to touch, requires removal w/ cotton roll isolation of parotid is necessary for tooth number - ANS 3 Methods of isolation should include all but - ANS Saliva ejector & bite blocks only Optimum combination of etching & rinsing is - ANS 15 seconds etching & 20-30 seconds rinse Handling of sealant material includes - ANS Refrigerate, use at room temp, & discard after expiration date Standard curing light time is for - ANS 20 seconds If sealant contacts glove, remove & discard, wash hands immediately w/ soap & water & re-gloved - ANS True If sealant etchant splashes into eyes, flush w/ water & return to normal activities - ANS False If drying agent is ingested, induce vomiting immediately - ANS False Curing light should be held 1-2 mm from tooth being sealed - ANS True Use glutarldehyde surface disinfectant on glass fiber- optics in the light guide of curing light - ANS False Routinely check the output of curing light, as it should not drop below 400 as sufficient for curing - ANS True Cleaning the teeth prior to sealant placement must include a coronal polish - ANS False If tooth becomes contaminated after etchant removal - ANS Re-etch rinse, & place sealant Criteria for appropriate sealant placement are - ANS Thin layer up on buccal & lingual inclines If saliva contamination after etching, should - ANS Re-etch for 10 seconds followed by sealant application If using A drying/priming agent - ANS Is applied after etching & allowed to remain 5 seconds For buccal & lingual pits application - ANS Seal 2-3 mm of surrounding tooth surface After etching rinse tooth for - ANS 20-30 seconds