Pit & FIssure Study guide

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  1. First permanent molars begin to erupt at age
    6 years
  2. On average, primary teeth \begin to erupt at age
    6 months
  3. Identify the location of the Wharton's duct opening and the Stenson's duct opening.
    • Stenson's- Parotid
    • Wharton's- Sublingual
  4. The three main parts of salivary glands located within the oral cavity are
    • Parotid
    • Sublingual
    • Submandibular
  5. A vestibule is defined as:
    • Joint where cheek meets hard mucosa(buccal gingiva)
    • Space b/w the teeth and the inner mucosal lining of the lips and cheeks..
  6. What anatomical features differentiate the maxillary and mandibular first molars?
    • Maxillary 1st : H shaped, 3 roots, cusp od carabelli
    • Mandibular 1st: 4 cusps
  7. _ is major elevation on the masticatory surfaces of canine and posterior teeth.
    _ forms by two developmental grooves that cross each other.
    _ is a deep narrow channels in the enamel surface that can extend close to the dentinoenamel junction.
    _ is rounded, raised border on the mesial and distal portions of the lingual surfaces of anterior teeth and the occlusal table of posterior teeth.
    • Cusp
    • Pit
    • Fissure
    • Ridge
  8. Image UploadImage Upload
    • DMR - distal marginal ridge
    • DBC - distobuccal cusp
    • DLC - distolingual cusp
    • MLC - mesiolingual cusp
    • MBC - mesiobuccal cusp
    • OR - oblique ridge
    • SG - supplemental groove
    • P- pit
  9. When placing a sealant on a maxillary first molar what salivary gland would you isolate to maintain a dry field?
    Parotid gland- Stenson's duct
  10. List 5 different types of foods which are the most likely to produce caries.
    • fermentable carbohydrates
    • sticky foods
    • dry foods
    • sugar
    • sodas
    • flour and grain
  11. Who can legally apply a pit and fissure sealant and under what type of supervision? Who can diagnose that a sealant is indicated?
    • apply- Dentist, RDH w/ certificate, RDH
    • diagnose- ONLY dentist
  12. Three contributing factors necessary for caries to develop are:
    • bacteria
    • suceptible host
    • cariogenic diet
  13. Identify 3 methods an RDA may use to prepare the tooth surface prior to the placement of a pit and fissure sealant.
    • Dry
    • Clean stains (prophy)
    • etch tooth, enamel
  14. What type of preventive aid is most effective in cleaning pit and fissures?
    • Air(micro) abrassion
    • Bristle brush
  15. List 2 requisites needed for ideal retention of a pit and fissure sealant.
    • dry field
    • etchant
  16. Pit and fissure sealants are designed to accomplish the following:
    prevent dental caries from forming
  17. What are indications and contraindications for sealant use:
    • Indications:
    • ropy saliva
    • deep fissure and pits
    • dry mouth
    • newly erupted teeth
    • Contraindications:
    • interproximal decay
    • adults w/ no sealants
    • colest...
    • pit and fissure well formed
    • patients unable to cooperate
  18. If a coronal polish is preformed prior to placement of a pit and fissure sealant, what type of prophy paste shpuld be avoided and why?
    • Prophy paste with flouride
    • Follow manufacture instructions
    • Sealant will not attach
  19. If an area of enamel is acid etched, what will likely happen to the enamel if a sealant is not placed?
  20. Must a tooth be completely free of caries prior to sealing? Why do you answer so?
    No, teeth with very small initial carious lesions may be inadvertenly sealed, bacteria cannot survive beneath a properly placed sealant.
  21. List the properties of photopolymerizing and autopolymerizing materials.
    • photo: light cure, no mixing, 1-2 mm
    • auto: two parts mixed equally, self cured, harden when mixed
  22. The types of isolation devices are commonly used and most likely placed prior to sealant placement are:
    • cotton rolls
    • dental dam
  23. the curing light is positioned _mm from the _ surface.
    • 1-2
    • tooth
  24. Describe the aaperance of a properly acid etched tooth.
    • frosty
    • chalky
    • dull
    • white
  25. List 4 possible causes for lack of retention of a pit/fissure sealant.
    • moisture contamination
    • air bubbles
    • inadequate etching
    • too much sealant
  26. if you are using a high energy curing light how long should each covered surface be cured?
    • high energy: 3-5 sec
    • ours: 20 sec
  27. Identify 3 uses for the explorer in the placement of sealants
    • trace the sealants for complete coverage and voids
    • stirring sealant to eliminate bubbles
    • feel for decay before etching
  28. What is an inhibition layer and how is it removed?
    • slimy layer that forms on surface
    • by scrubing with pumice and rinsing
  29. If it is apparent saliva has contaminated the tooth after etching, what steps must be instituted prior to sealant placement, and why?
    • Re-etch tooth and rinse(start over)
    • In order for sealant to attach to surface
  30. What is the number one reason a sealant will fail?
    Moisture contamination
  31. If a sealant exhibits a partial loss after _ months the general treatment is _.
  32. Characteristics of curing light is?
    • Allows operator to place and cure when necessary
    • no mixing
    • ?
  33. How is excess hardened sealant material removed?
    • scaler
    • bur
    • used ONLY by dentist
  34. Describe the proper and improper usage of over-gloves.
    prevent cross contamination when opening cabinets... getting other instruments, materials, etc..
  35. What types of foods are most likely to produce caries? why?
    fermentable carbohydrates
  36. _ is a nutrient thought to be the leading cause of plaque and caries development.
    carbohydrates... sugars
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Pit & FIssure Study guide
2012-02-23 03:32:44
Pit FIssure Study guide

Pit & FIssure Study guide
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