Identify the location of the Wharton's duct opening and the Stenson's duct opening.
The three main parts of salivary glands located within the oral cavity are
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..
What anatomical features differentiate the maxillary and mandibular first molars?
Maxillary 1st : H shaped, 3 roots, cusp od carabelli
Mandibular 1st: 4 cusps
_ 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.
DMR - distal marginal ridge
DBC - distobuccal cusp
DLC - distolingual cusp
MLC - mesiolingual cusp
MBC - mesiobuccal cusp
OR - oblique ridge
SG - supplemental groove
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
List 5 different types of foods which are the most likely to produce caries.
flour and grain
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
Three contributing factors necessary for caries to develop are:
Identify 3 methods an RDA may use to prepare the tooth surface prior to the placement of a pit and fissure sealant.
Clean stains (prophy)
etch tooth, enamel
What type of preventive aid is most effective in cleaning pit and fissures?
List 2 requisites needed for ideal retention of a pit and fissure sealant.
Pit and fissure sealants are designed to accomplish the following:
prevent dental caries from forming
What are indications and contraindications for sealant use:
deep fissure and pits
newly erupted teeth
adults w/ no sealants
pit and fissure well formed
patients unable to cooperate
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
If an area of enamel is acid etched, what will likely happen to the enamel if a sealant is not placed?
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.
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
The types of isolation devices are commonly used and most likely placed prior to sealant placement are:
the curing light is positioned _mm from the _ surface.
Describe the aaperance of a properly acid etched tooth.
List 4 possible causes for lack of retention of a pit/fissure sealant.
too much sealant
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
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
What is an inhibition layer and how is it removed?
slimy layer that forms on surface
by scrubing with pumice and rinsing
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
What is the number one reason a sealant will fail?
If a sealant exhibits a partial loss after _ months the general treatment is _.
Characteristics of curing light is?
Allows operator to place and cure when necessary
How is excess hardened sealant material removed?
used ONLY by dentist
Describe the proper and improper usage of over-gloves.
prevent cross contamination when opening cabinets... getting other instruments, materials, etc..
What types of foods are most likely to produce caries? why?
_ is a nutrient thought to be the leading cause of plaque and caries development.