Endo Flashcards
In “Structure-Function Relationships in Dog Dentin” by Soukup in Biomech. 2022 what was found in relationship to hardness?
Decreased from the DEJ to the pulp and from the crown tip to the base with a decrease adjacent to the DEJ
In “Structure-Function Relationships in Dog Dentin” by Soukup in Biomech. 2022 what was found in relation to elastic modulus
Decreased from the DEJ to the pulp and from the crown tip to the base with a decrease adjacent to the DEJ
In “Morphology of the CEJ in Permanent Teeth of Dogs: a SEM Study” by Hernandez in JVD 2020 Vol 37(3) what is the type 1 morphology (Choquet case)?
Type 1: cementum overlaps enamel
In “Morphology of the CEJ in Permanent Teeth of Dogs: a SEM Study” by Hernandez in JVD 2020 Vol 37(3) what is the morphology of type 2?
Type 2: enamel overlaps the cementum
In “Morphology of the CEJ in Permanent Teeth of Dogs: a SEM Study” by Hernandez in JVD 2020 Vol 37(3) what is the morphology of type 3?
Type 3: edge to edge relationship between cementum and enamel
In “Morphology of the CEJ in Permanent Teeth of Dogs: a SEM Study” by Hernandez in JVD 2020 Vol 37(3) what is the morphology of type 4?
Type 4: gap between the enamel and cementum with exposed dentin
In “Morphology of the CEJ in Permanent Teeth of Dogs: a SEM Study” by Hernandez in JVD 2020 Vol 37(3) what was the most common type?
Type 3 (90.79%)
In “Morphology of the CEJ in Permanent Teeth of Dogs: a SEM Study” by Hernandez in JVD 2020 Vol 37(3) what was the second most common type?
Type 4 (31.58%)
In “Morphology of the CEJ in Permanent Teeth of Dogs: a SEM Study” by Hernandez in JVD 2020 Vol 37(3) how many teeth had only one type of morphology? Combination?
One type: 65.13%
Combination: 34.87%
In “Morphology of the CEJ in Permanent Teeth of Dogs: a SEM Study” by Hernandez in JVD 2020 Vol 37(3) which types were present alone?
Types 3 and 4
In “Morphology of the CEJ in Permanent Teeth of Dogs: a SEM Study” by Hernandez in JVD 2020 Vol 37(3) what were the most frequent combinations?
Type 3 and 4 (20.40%)
Types 1 and 3 (9.87%)
In all combinations type 3 was predominant
In “Morphology of the CEJ in Permanent Teeth of Dogs: a SEM Study” by Hernandez in JVD 2020 Vol 37(3) which type is embryologically impossible and occurred in 2% of cases?
Type 2 - enamel would have to develop prior to cementum
In “Morphology of the CEJ in Permanent Teeth of Dogs: a SEM Study” by Hernandez in JVD 2020 Vol 37(3) what did they say is the most frequent morphology in cats?
Type 4 is more frequent than type 3
In “Scanning Electron Microscopy of Pulp Cavity Dentin in Dogs” by Hernandez in JVd Vol 27(1) 2010
What shape was present in the majority of the sentinel tubules examined?
Was distribution uniform?
Round or oval in shape
Yes
In “Scanning Electron Microscopy of Pull Cavity Dentin in Dogs” by Hernandez in JVd Vol 27(1) 2010
What was the dentinal tubule diameter in group 1 (dogs <7yrs)? Group 2? Significantly different?
Group 1: 1.87 +-0.44 micrometers
Group 2: 1.53 +- 0.39 micrometers
Yes
In “Scanning Electron Microscopy of Pull Cavity Dentin in Dogs” by Hernandez in JVd Vol 27(1) 2010
What was the dentinal tubule area in group 1 (dogs <7yrs)? Group 2? Significantly different?
Group 1: 1.91 +- 0.83 micrometers squared
Group 2: 1.22 +- 0.50 micrometers squared
Yes
In “Scanning Electron Microscopy of Pull Cavity Dentin in Dogs” by Hernandez in JVd Vol 27(1) 2010
What was the tubule density in both groups? Significantly different?
Group 1: 74,69
Group 2: 72,938
No
In “Scanning Electron Microscopy of Pull Cavity Dentin in Dogs” by Hernandez in JVd Vol 27(1) 2010
What was associated with decreasing dentinal tubule diameter and area?
Diameter and area decreased in a coronoapical direction and with increasing age
In “Scanning Electron Microscopy of Pull Cavity Dentin in Dogs” by Hernandez in JVd Vol 27(1) 2010
In what direction did dentinal tubule density decrease? Associated with age or occlusal function of the tooth?
In a coronoapical direction and no
In “Scanning Electron Microscopy of Pull Cavity Dentin in Dogs” by Hernandez in JVd Vol 27(1) 2010
What are the 3 types of dentin morphology described in the article?
Type 1: smooth with regular distribution
Type 2: irregular surface with regular distribution
Type 3: irregular and uneven distribution
In “Scanning Electron Microscopy of Pull Cavity Dentin in Dogs” by Hernandez in JVd Vol 27(1) 2010
Which type of dentin morphology was more likely to be seen in the radicular apical third? Which is most common overall, particularly in group 1?
Type 3
Type 2
In “Scanning Electron Microscopic Evaluation of Tooth Root Apices in the Dog” by Hernandez in JVD 2014 Vol 31(3)
What was the shape of the apex?
Varied from round to elliptical and round-elliptical
In “Scanning Electron Microscopic Evaluation of Tooth Root Apices in the Dog” by Hernandez in JVD 2014 Vol 31(3)
What was the size of the majority (85.44%) of foramina?
<50 micrometers
In “Scanning Electron Microscopic Evaluation of Tooth Root Apices in the Dog” by Hernandez in JVD 2014 Vol 31(3)
What was the maximum foramen diameter?
234.19 micrometers
