Details

Autor(en) / Beteiligte

• Zakizadeh, Parisa, DDS, MS
• Marshall, Sally J., PhD
• Hoover, Charles I., PhD
• Peters, Ove A., DMD, MS, PhD
• Noblett, W. Craig, DDS, MS
• Gansky, Stuart A., DrPH
• Goodis, Harold E., DDS

Titel

A Novel Approach in Assessment of Coronal Leakage of Intraorifice Barriers: A Saliva Leakage and Micro-computed Tomographic Evaluation

Ist Teil von

• Journal of endodontics, 2008-07, Vol.34 (7), p.871-875

Ort / Verlag

United States: Elsevier Inc

Erscheinungsjahr

2008

Link zum Volltext

Quelle

Elsevier ScienceDirect Journals Complete

Beschreibungen/Notizen

• Abstract The efficacy of amalgam, Fuji-Plus, Geristore, and mineral trioxide aggregate (MTA) as intraorifice barriers was compared in a simulated saliva leakage model. Fifty teeth were divided into 4 experimental (n = 10 each) and 2 control groups (n = 5 each). Two millimeters of the materials was placed as intraorifice barriers and brought into contact with human saliva in a coronal reservoir. Bacterial leakage into the apical reservoir was assessed daily for 3 months. Geristore barriers leaked significantly more often (5/10) than Fuji-Plus (0/10, P < .05) at 60 days. The first Fuji-Plus sample leaked after 70 days; after 90 days, 3 (Fuji-Plus), 4 (MTA, amalgam), and 6 (Geristore) samples leaked. There were no significant differences between the experimental groups at that time point. Three-dimensional gap volumes in the barrier-dentin interface and the porosity of the barrier materials were compared by using micro–computed tomography (μCT). A measurable gap was evident in only 1 specimen with an MTA barrier. MTA was significantly less porous than Fuji-Plus and Geristore ( P ≤ .05), whereas amalgam was too radiopaque to allow μCT measurements. In conclusion, Fuji-Plus might be an effective intraorifice barrier (up to 70 days in vitro), but all 4 materials showed leakage in some specimens at 90 days.