Child Dental Health Flashcards
What is silver diamine flouride (SDF) and what is it used for in dentistry?
It is a topical medicament composed of silver, ammonium and fluoride ions that can be used to manage and prevent dental caries, as well as relieving dentinal hypersensitivity
What do the individual components of SDF do to manage and prevent dental caries?
Silver compounds: possess antimicrobial properties
Fluoride: remineralisation of enamel and dentine
What characteristic colour does SDF stain?
Black
Why does SDF stain black upon exposure to light?
Due to the formation of silver oxide layer
What would you use to cover the patients lips when using SDF for treatment to prevent staining?
Petroleum jelly
During a procedure involving SDF, what sensation might the patient feel?
Tingling sensation
What does ART stand for?
Atraumatic restorative treatment
What does ART involve?
Minimally interventive approach involving selective caries removal using only hand instruments and the placement of GI cement.
What sort of cavities does ART manage?
Single surface cavities in primary and permanent teeth
when May ART be used for permanent dentition?
In situations where cooperation is limited
Is ART undertaken with or without the use of LA or rotary instruments?
Without
After ART, how long should you advise the patient to wait before eating or drinking anything other than water?
1 hour
What are orthodontic separators used for?
To open proximal contacts and create space
In what three situations may separators be used to create space?
- Prior to fitting preformed metal crown using Hall technique
- To aid caries diagnosis by allowing visualisation and access to proximal contacts
- When placing proximal sealants
If too much pressure is applied when placing a separator, what could be the consequence?
The band may be pushed apical to the contact point and become submerged into the gingival sulcus
What type of carious lesions is the Hall technique useful for managing?
Multi-surface carious lesions
what are the clinical requirements for use of the Hall technique on primary molar teeth?
- tooth must have no clinical or radiographic signs of pulpal pathology
- radiograph must show a clear band of dentine between the cavity and the pulp
How would you establish a baseline indicator of occlusal vertical dimension?
Measure the distance between the mid point of the maxillary canine gingival margin and the mid point of the gingival margin of the corresponding mandibular canine tooth directly below.
What instrument might you use to establish a baseline indicator of occlusal vertical dimension?
A periodontal probe
what sizes of metal crown are most commonly selected for use?
Sizes 4,5 and 6
What are the two ways of protecting the airway when trying to place a selected crown over a tooth?
- Place a sheet of gauze in the oral cavity
- Affix the crown to your finger with a piece of adhesive tape
What is a main consideration that should be taken when using the adhesive tape technique to place crown?
It is important to ensure that the patient does not have an allergy to Elastoplast
What two ways can you ensure that a crown becomes fully seated on the tooth?
- Continue to apply firm pressure with your finger
- Instruct patient to bite down firmly on a cotton wool roll
What sign would indicate that proper seating of the crown on a tooth has occurred?
Blanching of the surrounding gingiva
How would you record an INCREASE in occlusal vertical dimension (OVD)?
Retake the canine reference measurement (b). Subtract the initial measurement (a) from the final measurement (b). The remainder tells us how much the OVD has increased.
(B) - (a) = increase in OVD
How long may it take after placement of a crown for its to return to the original OVD?
A week or two
The periodontal probe can be used to measure mesio-distal distance of a tooth. What other instrument can be used?
Vernier callipers
How do you prevent palatal ledge formation when placing a crown?
Ensure that gentle pressure is exerted palatally in order to allow full seating and prevent palatal ledge formation
Glass ionomer performs well in multi surface cavities. True or false?
False
What is a pulpotomy?
Where inflamed and possibly infected coronal pulp tissue is removed from a carious primary tooth to preserve healthy radicular pulp.
when would you decide to take a pulpotomy?
When a tooth shows signs of irreversible pulpal inflammation
OR
where radiographically there is no “normal” appearing dentine separating the pulp tissue from a carious lesion
when would a pulpotomy not be suitable?
If the tooth is showing clinical or radiographic signs of infection or periradicular periodontitis
What are the four advantages to using a rubber dam?
- Protect airway
- Increase patient comfort
- Reduce the chance of bacterial ingress
- Enhance moisture control
when placing rubber dam, what tooth should you choose to clamp?
The tooth distal to the one undergoing treatment
What is a split dam technique?
Where the interproximal dam between adjacent holes is cut
When might it be useful to use a split dam technique?
If the tooth is to be restored with a preformed metal crown
what is another word used for root canal treatment?
Pulpectomy
If bleeding from the pulp does not occur during pulpotomy and the pulp appears necrotic (grey), what can be assumed and what would the appropriate course of treatment be?
The pulp is assumed to be non-vital and a pulpectomy or extraction would be required
How would you achieve homeostasis of the pulp post pulpotomy?
Place a cotton pad soaked in ferric sulphate onto the remaining pulpal tissue and canal entrances and leave for 1-2 minutes.
What substance might you place on the exposed pulp tissue after achieving homeostasis with ferric sulphate?
Mineral Trioxide Aggregate (MTA)
what material would you fill the pulp chamber with before placing a preformed metal crown?
Zinc oxide eugenol material
Why is the Hall technique generally preferred over the traditional stainless steel/preformed metal crown technique?
The traditional technique is a less conservative approach as it requires occlusal reduction and in some cases, proximal preparation to provide space for the crown.
In what situation would the traditional stainless steel crown technique be preferable to the Hall technique? And why?
Following a pulpotomy
Because reduction of the occlusal surface helps to reduce further trauma to the pulp as would have ben caused by occlusal loading following the hall technique.
What is the effect of SDF on bacteria?
Silver interacts with bacterial cell membranes and bacterial enzymes that can inhibit bacterial growth.
Silver ions degrade cell walls, disrupt bacterial DNA synthesis and intra cellular metabolic processes, leading to apoptosis.
Is the pulp proportionately larger in the primary or permanent dentition?
Primary
What do these symptoms in a tooth suggest?:
- not TTP
- no sensitivity to heat
- sharp pain to cold substances or sweets
Reversible pulpitis
What do these symptoms in a tooth suggest?:
- not TTP
- sensitivity to heat
- Sensitivity to cold that lasts more than 30 secs
- intense, spontaneous pain
Irreversible pulpitis
What would be the course of treatment required for irreversible pulpitis?
Pulpectomy or extraction
What type of radiographs would you use for assessing pulpal status and why?
Ideal: periapical
Sufficient: vertical bitewing
They demonstrate the full length of the primary root
Medically, when is pulp therapy contraindicated?
For immunocompromised patients, and those at risk of endocarditis
How many roots and root canals does a mandibular primary molar have?
Two
How can root canal morphology differ in mandibular primary molars?
One or sometimes two distal root canals
How many roots and root canals does a maxillary primary molar have?
Three
How does ferric sulphate induce homeostasis?
Forms ferric ion protein complex when it interacts with blood, this arrests bleeding by sealing vessels.
what may prevent the use of MTA in pulpotomy?
It is expensive
What are the 4 main steps to a pulpectomy technique?
- Dry root canals
- Fill canals with calcium hydroxide
- Restore pulp chambers with glass ionomer core
- Restore tooth with stainless steel crown and take post op. Radiograph
What are the two major causes of dental anomalies?
Genetics and environmental factors
What is hypodontia?
Missing teeth as a result of failure to develop
What is anodontia?
Total lack of teeth in one or both dentitions