Study of Tractional Resistance in the Adhesive Restorative Unit of Composite Resin for Use in Dentistry United to Healthy Dental Enamel of Canine's Incisors
Introduction
Oral diseases are exceedingly common in dogs and cats. In addition to pain and discomfort, systemic manifestations can exist as well. Therefore, the identification and treatment of these diseases are essential to overall health and welfare of our older pets.
Objectives
This study sought to assess the tensile bond strength of the resin composite restorations on healthy tooth enamel of dog incisors, "in vitro."
Aims
To perform this study 107 incisors with macroscopically healthy enamel were obtained.
Methods
Each tooth was etched with 37% orthophosphoric acid. A cube of composite resin was attached to each tooth using an adhesive resin and in each bucket a steel hook was inserted. The samples were divided in two groups: upper and lower incisors and they were submitted under tensile strength using a universal testing machine (Instron Tinius Olsen SH5K at the Institute of Materials Research and Testing) at a speed of 10 mm/min.
Result
|
Type
|
N
|
Standard deviations
|
Max
|
Min
|
C.V.%
|
|
Upper (MPa)
|
54
|
5,48 ± 2,51
|
13,63
|
1,65
|
45,85%
|
|
Lower (MPa)
|
53
|
5,48 ± 2,20
|
10,98
|
2,48
|
40,10%
|
The results were analyzed using the test of variance and subsequently verified with Tukey's test with a degree of accuracy of 5%.
Conclusions
That there weren't significant differences (p > 0.05) between both groups under tensile strength, in vitro.