Evaluation of compressive load required to fracture premolar restored with different restorative materials-an in vitro.
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Date
2016-07
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Abstract
Background: Restored teeth are generally weaker than sound
teeth due to loss of tooth structure caused by caries and
restorative procedures. The loss of both tooth structures as a
result treatment will increase the likelihood of fractures
during functional loading.
Objective: To evaluate the fracture resistance of premolars
with class II disto occlusal preparations restored with light
cured composite with light cured composites layered
incrementally and silver amalgam in comparison with intact
and unrestored teeth.
Material and methods: 50 freshly extracted premolars were
randomly divided into 5 groups of 10 teeth each. All the 50
specimens were then subjected to a compressive load in a
Universal Testing Machine (Hounsfield). The loads required to
fracture the teeth were recorded and the data, obtained were
subjected to statistical analysis and the following results were
arrived.
Result: Teeth restored with light cured composite
incrementally placed in oblique layers produced a higher
fracture resistance than any other group and showed the
closest value to the intact teeth. This was followed in
descending order by light, cured composite placed in
horizontal increments and silver amalgam.
Conclusion: Result concluded that teeth restored with light cured composite incrementally placed in oblique
layers produced a higher fracture resistance than any other group and showed the closest value to the intact
teeth.
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Keywords
light cured composite, silver amalgam, oblique technique, horizontal technique
Citation
Khatib M M, Sarvesha B, Mahajan V. Evaluation of compressive load required to fracture premolar restored with different restorative materials-an in vitro. International Journal of Medical and Dental Sciences. 2016 July; 5(2): 1236-1240.