Strength of roots before and after endodontic treatment and restoration |
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Authors: | E Sornkul JG Stannard |
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Affiliation: | Department of Restorative Dentistry, Tufts University, School of Dental Medicine, Boston, MA 02111, USA. |
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Abstract: | The resistance to fracture of mandibular premolar roots before and after endodontic and restorative procedures was tested. Seven treatment groups were evaluated. A Universal testing machine was used to apply vertical and lateral (45-degree) forces. Overall, the untreated roots showed the highest resistance to fracture. Factors of importance to prevent fracture were found to be (a) the amount of remaining tooth structure; (b) strength of post and core; and (c) bonding between core material and dentin. These factors suggest that a composite core following the use of EDTA to remove the smear layer may be a successful treatment when sufficient tooth structure remains. |
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