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Janes' Veterinary Dentistry_CP > JVD 2010 #1 - Scanning Electron Microscopy of Pulp Cavity Dentin in Dogs > Flashcards

JVD 2010 #1 - Scanning Electron Microscopy of Pulp Cavity Dentin in Dogs Flashcards

1
Q

According to Sabás Z. Hernández, DVM, PhD; Viviana B. Negro, DVM, PhD; Rodrigo H. Paulero, DVM; Paula G.Toriggia, DVM; Daniela M. Saccomanno, DVM

in Scanning Electron Microscopy of Pulp Cavity Dentin in Dogs

What was performed in this study?

A

Sectioned teeth, dissolved tissues with bleach and then performed SEM on the pulp chamber surface of the dentin at 3 locations - crown, apically in root and coronally in root..

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2
Q

According to Sabás Z. Hernández, DVM, PhD; Viviana B. Negro, DVM, PhD; Rodrigo H. Paulero, DVM; Paula G.Toriggia, DVM; Daniela M. Saccomanno, DVM

in Scanning Electron Microscopy of Pulp Cavity Dentin in Dogs

What was significant about the methodology?

A

Did not use EDTA or phosphoric acid - so should be no change in tubule diameter

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3
Q

According to Sabás Z. Hernández, DVM, PhD; Viviana B. Negro, DVM, PhD; Rodrigo H. Paulero, DVM; Paula G.Toriggia, DVM; Daniela M. Saccomanno, DVM

in Scanning Electron Microscopy of Pulp Cavity Dentin in Dogs

Describ Type I dentin.

A

smooth surface with dentinal tubules regularly distributed

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4
Q

According to Sabás Z. Hernández, DVM, PhD; Viviana B. Negro, DVM, PhD; Rodrigo H. Paulero, DVM; Paula G.Toriggia, DVM; Daniela M. Saccomanno, DVM

in Scanning Electron Microscopy of Pulp Cavity Dentin in Dogs

What type of dentin is this?

A

Type I

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5
Q

According to Sabás Z. Hernández, DVM, PhD; Viviana B. Negro, DVM, PhD; Rodrigo H. Paulero, DVM; Paula G.Toriggia, DVM; Daniela M. Saccomanno, DVM

in Scanning Electron Microscopy of Pulp Cavity Dentin in Dogs

Describe Type II dentin

A

Irregular surface (wavy, globular) with dentinal tubules regularly distributed

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6
Q

According to Sabás Z. Hernández, DVM, PhD; Viviana B. Negro, DVM, PhD; Rodrigo H. Paulero, DVM; Paula G.Toriggia, DVM; Daniela M. Saccomanno, DVM

in Scanning Electron Microscopy of Pulp Cavity Dentin in Dogs

What type of dentin is this?

A

Type II

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7
Q

According to Sabás Z. Hernández, DVM, PhD; Viviana B. Negro, DVM, PhD; Rodrigo H. Paulero, DVM; Paula G.Toriggia, DVM; Daniela M. Saccomanno, DVM

in Scanning Electron Microscopy of Pulp Cavity Dentin in Dog

Describe Type III dentin

A

very irregular surface, formed by dentinal tubule projections of variable thickness, creating a disordered mesh.

irregular, elongated shaped openings among these projections corresponding to dentinal tubules with some areas devoid of dentinal tubules

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8
Q

According to Sabás Z. Hernández, DVM, PhD; Viviana B. Negro, DVM, PhD; Rodrigo H. Paulero, DVM; Paula G.Toriggia, DVM; Daniela M. Saccomanno, DVM

in Scanning Electron Microscopy of Pulp Cavity Dentin in Dog

What type of dentin is this?

A

Type III

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9
Q

According to Sabás Z. Hernández, DVM, PhD; Viviana B. Negro, DVM, PhD; Rodrigo H. Paulero, DVM; Paula G.Toriggia, DVM; Daniela M. Saccomanno, DVM

in Scanning Electron Microscopy of Pulp Cavity Dentin in Dog

What type of dentin is this?

A

Type III

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10
Q

According to Sabás Z. Hernández, DVM, PhD; Viviana B. Negro, DVM, PhD; Rodrigo H. Paulero, DVM; Paula G.Toriggia, DVM; Daniela M. Saccomanno, DVM

in Scanning Electron Microscopy of Pulp Cavity Dentin in Dog

What difference was found between tubule size and tubule density between young and old dogs?

A

Tubule density showed no significant difference,

Tubule size was larger in younger dogs

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11
Q

According to Sabás Z. Hernández, DVM, PhD; Viviana B. Negro, DVM, PhD; Rodrigo H. Paulero, DVM; Paula G.Toriggia, DVM; Daniela M. Saccomanno, DVM

in Scanning Electron Microscopy of Pulp Cavity Dentin in Dog

What change was found between coronal region and apical regin in number of tubules?

A

fewer tubules in the apical region

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12
Q

According to Sabás Z. Hernández, DVM, PhD; Viviana B. Negro, DVM, PhD; Rodrigo H. Paulero, DVM; Paula G.Toriggia, DVM; Daniela M. Saccomanno, DVM

in Scanning Electron Microscopy of Pulp Cavity Dentin in Dog

How many tubules were there on average per mm squared?

A

70,000

Note this is higher because tubules are closer together on the pulp side.

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13
Q

According to Sabás Z. Hernández, DVM, PhD; Viviana B. Negro, DVM, PhD; Rodrigo H. Paulero, DVM; Paula G.Toriggia, DVM; Daniela M. Saccomanno, DVM

in Scanning Electron Microscopy of Pulp Cavity Dentin in Dog

Approximately what diameter are the dentinal tubules in this location?

A

1.5-2 um

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Janes' Veterinary Dentistry_CP (87 decks)

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