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Debris and irrigant collection apparatus
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Figure 1: Debris and irrigant collection apparatus

Mentions: The debris and irrigant collection apparatus [Figure1] prepared was similar to that described by Meyers and Montgomery[10] The tooth was forced through a rubber stopper of the vial after standard access cavity preparation. A centrifuge tube was preweighed to 10[-5] precision in an electronic microbalance (Single Pan K-Roy analytical balance, K-15) and placed in a 7 ml vial. The rubber stopper with the tooth was then fitted into the mouth of the vial.

Apical extrusion of debris and irrigant using hand and rotary systems: A comparative study

Ghivari SB, Kubasad GC, Chandak MG, Akarte N - J Conserv Dent (2011)

Bottom Line: The mean weight of the dry debris and irrigant within the group and between the groups was calculated by the one-way ANOVA and multiple comparison (Dunnet D) test.The step-back technique extruded a greater quantity of debris and irrigant in comparison to other hand and rotary Ni-Ti systems.All instrumentation techniques extrude debris and irrigant, it is prudent on the part of the clinician to select the instrumentation technique that extrudes the least amount of debris and irrigant, to prevent a flare-up phenomena.

Affiliation: Department of Conservative Dentistry and Endodontics, Sharad Pawar Dental College, Sawangi Meghe, Wardha, India.

ABSTRACT

Aim: To evaluate and compare the amount of debris and irrigant extruded quantitatively by using two hand and rotary nickel-titanium (Ni-Ti) instrumentation techniques.

Materials and methods: Eighty freshly extracted mandibular premolars having similar canal length and curvature were selected and mounted in a debris collection apparatus. After each instrument change, 1 ml of distilled water was used as an irrigant and the amount of irrigant extruded was measured using the Meyers and Montgomery method. After drying, the debris was weighed using an electronic microbalance to determine its weight.

Statistical analysis used: The data was analyzed statistically to determine the mean difference between the groups. The mean weight of the dry debris and irrigant within the group and between the groups was calculated by the one-way ANOVA and multiple comparison (Dunnet D) test.

Results: The step-back technique extruded a greater quantity of debris and irrigant in comparison to other hand and rotary Ni-Ti systems.

Conclusions: All instrumentation techniques extrude debris and irrigant, it is prudent on the part of the clinician to select the instrumentation technique that extrudes the least amount of debris and irrigant, to prevent a flare-up phenomena.

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