2014 #1 Effect of Preparation Surface Area on the Clinical Outcome of Full Veneer Crowns in Dogs Riehl, Soukup, Snyder Flashcards
What was the objective of the study?
To evaluate the effect preparation surface area has on the clinical outcome of full veneer crowns of the canine tooth in dogs
How was the study designed?
Stone dies of 32 maxillary and mandibular canine teeth from Wisconsin were used from previous client owned patients All crowns were cemented with the same resin-based cement Dies were scanned and 3D computed generated models were created and the surface area of each die was calculated Clinical outcome was divided into “adhesion/cohesion falure” “tooth fracture failure” or “success”
What was the outcome of the 32 crowns?
32 crowns 5 (15%) had unsuccessful clinical outcome 2/5 (40% of unsuccessful) had fracture of the tooth 3/5 (60% of unsuccessful) had adhesion/cohesion failure
What was the conclusion of the study in regards to clinical outcome and surface area?
A trending positive correlation between increasing surface area and the liklihood of clinical success. Teeth with a successful clinical outcome had a higher mean surface area compared to those with a non-successful clinical outcome
Was the association between surface area and clinical success a trending positive correlation or statistically significant?
Not statistically significant
What are 5 potential negative outcomes associated with subgingival margins?
1 Increased plaque accumulation 2 Gingival Inflammation 3 Deep pocket formation 4 Attachment loss 5 Gingival recession
What are 3 techniques to increase surface area in crown preparation?
1 Axial grooves 2 Subgingival Margins 3 Crown lengthening
What were the results of surface area and clinical outcome?
