"Cormparative Eva!uation of Clinical Outcome, Radiographie Success and Antimicrobiat Efficacy of Hand Files With Reciprocating Handpiece V/s 3 Different Rotary File Systems in Primary Teeth: A Randomized Clinical Study".

Successful pulp therapy (SPT) requires

absolute aseptic condition of the root canals

by adequately cleaning and shaping of the

root canal.[1] Convoluted pulpal canals often

make the biomechanical preparation a

challenging process in primary teeth.[2] Ideal

obturation should provide fluid impervious

seal for the successful pulp therapy.[3] There

are numerous factors which are responsible

for achieving the ideal quality of obturation

such as, preparing the root canal walls to

achieve adequate filling of the obturating

material till the apex and the presence of

three- dimensional seal of the root canal.[4]

One of the main complications faced by

children following pulp therapy is the

presence of postoperative pain.[5]

Postoperative pain is due to the apical

extrusion of the debris during

instrumentation producing inflammatory

reaction. The biological objective is to

eliminate necrotic pulp, bacteria, and

bacterial toxins using instrumentation and

irrigation, followed by filling the sterile canal

with a resorbable material. [4] Besides

thorough cleaning and debridement of the

root canal, the treatment duration is

particularly important in pediatric dentistry.

The use of hand instruments is very time

consuming and produces unwanted

complications like apical transportation and

ledge formation.[7] Adequately tapered

preparations are required to seal the root

canals till the apex with the obturating

material.[8] To provide high-quality treatment

more efficiently, rotary instrumentation has

been introduced.[5] Rotary instrumentation

was introduced for primary teeth by Barr et

al. in 2000.[6] This technique offers both

advantages and disadvantages for primary

and permanent teeth. The use of rotary

systems facilitates uniform preparation and

thorough debridement of root canals. Silva et

al. reported that using rotary instrumentation

in primary teeth significantly reduces the

time required for root canal preparation.[7]

Studies have also demonstrated that nickeltitanium

(NiTi) rotary instruments provide a

good taper to the preparation, improving

obturation quality with minimal risk of canal

transportation.[8,9] However, Drukteinis and

Balciuniene noted that rotary instruments

might not completely clean the isthmus and

fins of primary teeth due to their centering

ability in the root canal. They recommended

additional use of an H-file to remove infected

tissue from ribbon-shaped canals and

mitigate this disadvantage.[10] Other

drawbacks of rotary instrumentation include

increased cost and the potential for

instrument breakage.[11]Exclusive rotary file

systems for primary teeth have been

developed over the time to overcome the

disadvantage of the existing rotary files like

Kedo s square File, Rainbow File, Fanta af

file etc. Hence,the aim of this clinical trial is

Comparative evaluation of Clinical

outcome, Radiographic success and

Antimicrobial efficacy of hand files with

reciprocating handpiece v/s 3 different types

of rotary file systems in primary teeth : A

randomized Clinical study