JVD 2017 #2 - Apical Microleakage in Root Canals Obturated With 2 Different Endodontic Sealer Systems in Canine Teeth of Dogs Flashcards

1
Q

Authors?

A

Chad Lothamer

C. Snyder, S. Goldschmidt, J. Soukup

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2
Q

What are the 3 components of the endodontic triad?

A

Preparation, sterilization, obturation

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3
Q

What was performed in the study?

A

standard root canal of extracted canine teeth in dogs, sealed with guttaflow or AH+ and evaluated for sealing ability with a dye leakage test.

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4
Q

What were the findings comparing the sealing ability of the 2 sealers?

A

No significant difference in the prevalence of microleakage or the magnitude of penetration

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5
Q

What problems with the methodology were encountered?

A
  • Clearing method is finnicky and require diligent monitoring durint the demineralizing phase; excessive demineralization can rapidly occur resulting in dissolution of the sample.
  • completely dissolved 6 AH+ teeth and 3 guttaflow teeth out of 20 in each group
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6
Q

What is the benefit of AH+ over the older sealer AH26?

A

Less formaldehyde release on setting (AH+ is still cytotoxic for 4 hrs)

Formaldehyde: cytotoxic, carcinogenic, allertenic

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7
Q

What class of sealer does AH+ belong to?

A

Epoxy amide sealer

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8
Q

What volumetric change can be expected in AH+ on setting?

A

shrinkage of 1.7%

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9
Q

What class of sealer does Guttaflow 2 belong to?

A

Silicone based sealer

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10
Q

What volumetric change can be expected with setting fo Guttaflow 2?

A

Expansion by 0.2%

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11
Q

Which is more soluble, guttaflow 2 or AH+?

A

AH+ - solubility of 0.3%; guttaflow 2 has solubility of 0%

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12
Q

What are other methods for assessing endodontic sealer ability?

A

dye penetration

fluid filtration methodology

dye extraction methods

bacterial or toxin infiltration methods

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