Dimensional variability of nonstandardized greater taper finger spreaders with matching gutta‐percha points

Marroquín, Benjamin Briseño; Wolter, D.; Willershausen-Zönnchen, B

doi:10.1046/j.1365-2591.2001.00344.x

Cited by 13 publications

(7 citation statements)

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“…A profile digital projector (PRAZIS) was used for obtaining measurements; this equipment has been previously used in dental research (24)(25)(26), in periodontics for the study of furcation anatomy (27), and in endodontics to test gutta-percha points and root canal filling materials microleakages (28,29).…”

Section: Discussionmentioning

confidence: 99%

Furcation Groove of Maxillary First Premolar, Thickness, and Dentin Structures

Lammertyn¹,

S²,

Brunotto³

et al. 2009

Journal of Endodontics

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Section: Discussionmentioning

confidence: 99%

Furcation Groove of Maxillary First Premolar, Thickness, and Dentin Structures

Lammertyn¹,

S²,

Brunotto³

et al. 2009

Journal of Endodontics

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“…The main canal was simulated using a D-size finger spreader (Dentsply Maillefer, Ballaigues, Switzerland). This instrument had a length of 25 mm, a tip diameter of 0.35 mm, and a 0.06 taper (Briseñ o Marroquín et al 2001). Accessory canals were created by 0.2-mm stainless steel wires (Fig.…”

Section: Fabrication Of Modelmentioning

confidence: 99%

Necrotic pulp tissue dissolution by passive ultrasonic irrigation in simulated accessory canals: impact of canal location and angulation

et al. 2008

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AIM: To evaluate whether passive ultrasonic irrigation (PUI) of 2.5% NaOCl would dissolve necrotic pulp tissue from simulated accessory root canals (SACs) better than passive placement of the irrigant, when temperature was equilibrated between the two treatments. METHODOLOGY: Transparent root canal models (n = 6) were made from epoxy resin. SACs of 0.2 mm diameter were placed at defined angles and positions in the mid-canal and apical area. SACs were filled with necrotic bovine pulp tissue. PUI was performed five times for 1 min each with irrigant replenishment after every minute. Main canal temperature was measured after each minute, and a digital photograph was taken. In control experiments, mock treatments were performed with the same set-up without activation of the file using heated NaOCl to mimic the temperature created by PUI. Experiments were repeated five times. Digital photographs were analysed for the distance of dissolved tissue into the SACs in mm. Overall comparison (sum of dissolved tissue from all five accessory canals) between treatments was performed using paired t-test. Differences between SAC angulation and position after PUI were investigated using anova/Bonferroni (alpha < 0.05). RESULTS: Passive ultrasonic irrigation caused a rise in irrigant temperature in the main canal to 53.5 +/-2.7 degrees C after the fifth minute. PUI dissolved a total of 6.4 +/-2.1 mm, mock treatment controlled for heat: 1.4 +/-0.6 mm (P < 0.05). No significant influence of SAC position or angulation was found. CONCLUSIONS: Passive ultrasonic irrigation promotes positive tissue-dissolving effects beyond a rise in irrigant temperature. AbstractAim To evaluate whether passive ultrasonic irrigation (PUI) of 2.5% NaOCl would dissolve necrotic pulp tissue from simulated accessory root canals (SACs) better than passive placement of the irrigant when temperature was equilibrated between the two treatments.Methodology Transparent root canal models (N = 6) were made from epoxy resin. SACs of 0.2 mm diameter were placed at defined angles and positions in the mid-canal and apical area.SACs were filled with necrotic bovine pulp tissue. PUI was performed for five times 1 min with irrigant replenishment after each min. Main canal temperature was measured after each min, and a digital photograph was taken. In control experiments, mock treatments were performed with the same set-up without activation of the file using heated NaOCl to mimick the temperature created by PUI. Experiments were repeated 5 times. Digital photographs were analysed for the distance of dissolved tissue into the SACs in mm. Overall comparison (sum of dissolved tissue from all 5 accessory canals) between treatments was performed using paired t-test. Differences between SAC angulation and position after PUI were investigated using ANOVA/ Bonferroni (alpha < 0.05).

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“…Strong cation-exchange (SCX) chromatography with its high loading capacity has become a standard separation technique in proteomics (Jiang et al, 2007;Peng et al, 2003). SCX chromatography is used as the first separation step of two-dimensional LC (2D-LC) prior to MS analysis (Briseno Marroquin et al, 2001;Davis et al, 2001).…”

mentioning

confidence: 99%