Sealant State Exam Questions And Answers

Child classified at moderate risk for caries - ANS frequent sugar exposure, with compromised oral hygiene Adults with high risk demonstrates following criteria - ANS has 3 or a more caries in past 3 years Factors contributing to the formation of caries - ANS fissures less than .1 mm wide and enamel at base of fissure thinner than other areas of the tooth Fissure described as - ANS imperfect joining of enamel and 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 and bacteria What best describes incipient (in the beginning) caries - ANS starts as decalcification and if stopped can repair itself Remineralization occurs when - ANS calcium and phosphate in saliva is absorbed into enamel Criteria for selecting teeth for sealants - ANS placed on adult teeth with no caries, deep retentive, narrow pits and fissures Who can apply sealants - ANS RDAEF, RDA completed state board course, hygenist, dentist (freebie) 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 and fissures Helpful techniques in placement of pit and fissure - ANS Enamel conditioning with 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 with moistened cotton roll Isolation of parotid is necessary for tooth number 3, 10, 25, or 18? - ANS 3 Methods of isolation should include all but - ANS Saliva ejector and bite block only Optimum combination of etching and rinsing is - ANS 15 seconds etching and 20 to 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 etch contacts glove, remove and discard, wash hands immediately with soap and water and re glove - ANS true If sealant etchant splashes into eyes, flush with water and return to normal activities - ANS False If drying agent in ingested induce vomiting immediately - ANS False Curing light should be held 1-2mm 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 a sufficient for curing - ANS True