Defects 10 mm long were created in long bone in the diaphysis of both radii of 18 rabbits (test and control side). On the test side, ingrowth of bone marrow into the defects was hindered or delayed by: plugging the opening of the cut bone ends with gutta-percha points (n = 7); plugging with Gelfoam
Canal preparation is a complex procedure, performed with inadequate instruments and chemicals in a restricted environment. With these limitations, it is surprising that the success rate for root canal treatment is good, although not as high as is commonly reported. The preparation of the canal is
OBJECTIVE
To assess irrigant penetration in curved canals after shaping procedures ex vivo.
METHODS
Thirty extracted mandibular molars with moderate to severe root canal curvature were included. A special aiming device was used to guarantee that each successive radiograph was taken with the same
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