Presentationon

QUANTITATIVE ASSESSMENT OF APICAL DEBRIS EXTRUSION DURING

ROOT CANAL INSTRUMENTATION WITH THREE DIFFERENT ROTARY

INSTRUMENTS: AN IN VITRO STUDY.

Principal Investigator: Guide :Dr Kriti Sharma Dr M.P. SinghPG ( 1st Year) (Professor &HOD)Dept of Conservative Dept of ConservativeDentistry & Endodontics Dentistry & Endodontics

INTRODUCTION

Root canal preparation is one of the most important step in endodontic treatment.

During this step irrigants , dentinal debris, pulp tissue & microorganisms may be extruded into the periapical tissues.

Such extruded debris periapically, is one of the common reason for post endodontic complication such as flare-ups, which is described by periapical inflammation, pain and swelling.

Need for the study :

With the advent and marketing of newer rotary systems, there is a need of an hour to assess and compare quantitative extrusion of debris periapically.

Aims and objectives

To assess quantitatively the amount of debris extruded by three different endodontic rotary file system and a hand file system.

To compare the amount of debris extruded by three different endodontic rotary file system and a hand file system.

Study Method

60 extracted human mandibular pre molar were selected based on inclusion and exclusion criteria.

Teeth will be subjected to pre procedural ultra sonic cleaning.

Coronal access cavity will be prepared using diamond burs.

Study Method (continued)

Working length will be determined.

Pre- weighed Eppendorf tubes attached with stopper will be taken for each tooth.

Holes will be created in these stoppers to place teeth into the tubes.

A needle will be placed alongside the stoppers to balance the internal and external air pressure.

Study Method (continued) All 60 samples will be divided in four groups

GROUP I

• ProTaper • Gold

GROUP II

• ProTaper

GROUP III

• K3XF

GROUP IV

• Control K- file

Study Method (continued)

Cleaning and shaping with the above mentioned instruments will be done according to manufacturer’s instruction.

8 ml of distilled water will be used as irrigation solution for all the above said groups

Study Method (continued)

After instrumentation stopper with the tooth will be removed from Eppendorf tube.

Tubes will be stored at 35°c for 10 days to evaporate the distilled water leaving behind dry debris.

Weight of dry debris will be measured using electronic balance.

Weight of dry debris is calculated by subtracting weight of empty tube from weight of tubes containing debris.

Dissertation Hypothesis

Null Hypothesis: There is no difference in the quantitative extrusion of debris periapically

Alternative Hypothesis: There is difference in the quantitative extrusion of debris periapically.

References Ozsu D, Karatas E, Arslan H, Topcu MC. Quantitative

evaluation of apically extruded debris during root canal instrumrntation with protaper universal, protaper next, wave one and self adjusting file system. Eur J Dent 2014;8:504-8

Pawar AM, Pawar MG, Metzger Z, Kokate SR. The self-adjusting file instrumentation results in less debris extrusion apically when compared to WaveOne and ProTaper NEXT. J Conserv Dent 2015;18:89-93.

Uzunoglu E, Turker SA, Gorduysus M. Effect of different rotary files combined with different irrigation needles on apically extruded debris. Braz Dent J 2015;26:347-350.

Thank You

Thank You