Periodontics

Question 1

In Rodrigues’s 2013 survey, “A clinical survey on the prevalence and types of cheek teeth disorders present in 400 Zamorano-Leones and 400 Mirandes donkeys (Equus asinus),” what was found to be the major cause of periodontal disease in the study?

Answer 1

Diastemata (97.4% of CT adjacent to diastemata had periodontal disease)

Question 2

In Jackson’s 2016 study “A Retrospective Study of the Effectiveness of Four Different Treatments of Periodontal Disease in Equine Cheek Teeth,” what treatments showed stat sig reductions in periodontal pocket depth?

JVD 2016

Answer 2

Chlorhexidine
Metronidazole
PVS

Question 3

In Jackson’s 2016 study “A Retrospective Study of the Effectiveness of Four Different Treatments of Periodontal Disease in Equine Cheek Teeth,” what treatment group did not show a significant reduction after adjusting for multiple testing?

JVD 2016

Answer 3

Diastema widening

Question 4

In Jackson’s 2016 study “A Retrospective Study of the Effectiveness of Four Different Treatments of Periodontal Disease in Equine Cheek Teeth,” what was the relationship between pocket depth and improvement following treatment?

JVD 2016

Answer 4

Deeper pockets tended to experience greater improvement following treatment

Question 5

In Jackson’s 2016 study “A Retrospective Study of the Effectiveness of Four Different Treatments of Periodontal Disease in Equine Cheek Teeth,” what were the two main inclusion criteria?

JVD 2016

Answer 5

At least one cheek tooth periodontal pocket with a depth of 5mm or more
Second treatment/exam performed within 6 months

Question 6

In Schrock’s 2013 paper, “Finite element analysis of equine incisor teeth. Part 1: Determination of the material parameters of the periodontal ligament,” what two properties describe the elastic behavior of materials?

Answer 6

Young’s modulus, Poisson’s ratio

Question 7

Describe the properties of the periodontal ligament as presented in Schrock’s 2013 paper, “Finite element analysis of equine incisor teeth. Part 1: Determination of the material parameters of the periodontal ligament.”

Answer 7

Anisotropic with viscoelastic and non-linear behavior

Question 8

In Schrock’s 2013 paper, “Finite element analysis of equine incisor teeth. Part 1: Determination of the material parameters of the periodontal ligament,” what was the calculated Young’s moduli of equine incisor periodontal ligaments?

Answer 8

1.3- 8.0 Mpa

Question 9

In Schrock’s 2013 paper, “Finite element analysis of equine incisor teeth. Part 2: Investigation of stresses and strain energy densities in the periodontal ligament and surrounding bone during tooth movement,” what were the two principal directions of tooth movements observed in all jaws?

Answer 9

Intrusive movement in an apical direction along the longitudinal axis of the tooth into its alveolus

Tilting movement in a labial direction

Question 10

Describe the predominant areas of the tooth responsive to compressive and tensile stresses and the associated bone reaction as described in Schrock’s 2013 paper, “Finite element analysis of equine incisor teeth. Part 2: Investigation of stresses and strain energy densities in the periodontal ligament and surrounding bone during tooth movement.”

Answer 10

Compressive stresses predominant on the
labial side of the alveolar crest
palatal/ lingual side of the root tip –> loss of bone

Tensile stresses predominant on the
palatal/ lingual side near the alveolar crest
–> deposition of bone