1Professor, Department of Conservative Dentistry & Endodontics, Sree Balaji Dental College & Hospital, Bharath Institute of Higher Education & Research, Narayanapuram, Pallikaranai, Chennai, Tamilnadu, India
2Private Practitioner, Department of Conservative Dentistry & Endodontics, Sree Balaji Dental College & Hospital, Bharath Institute of Higher Education & Research, Narayanapuram, Pallikaranai, Chennai, Tamilnadu, India
3Reader Department of Conservative Dentistry & Endodontics, Sree Balaji Dental College & Hospital, Bharath Institute of Higher Education & Research, Narayanapuram, Pallikaranai, Chennai, Tamilnadu, India
4Professor & Head, Department of Conservative Dentistry & Endodontics, Sree Balaji Dental College & Hospital, Bharath Institute of Higher Education & Research, Narayanapuram, Pallikaranai, Chennai, Tamilnadu, India
*Corresponding Author: Dr. Venkatachalam Prakash, Department of Conservative Dentistry & Endodontics, Sree Balaji Dental College & Hospital, Bharath Institute of Higher Education & Research, Narayanapuram, Pallikaranai, Chennai-600100. Tamilnadu, India. Phone number: 09841126331, 044-24571358, E-mail: drprakashmds@gmail.com
Online published on 26 September, 2019.
Several rotary Ni-Ti and reciprocating have been evolved with variable tapers, variable pitch diameters, M-wire technology and non cutting tip that are claiming to maintain original canal shape with emphasis on centering ability.
To compare the centring ability, apical third canal transportation and change in canal curvature of different rotary and reciprocating systems, in vitro.
Fifty mesial canals of freshly extracted molars with completely formed apices, angles of curvature 15°-25° and radii of curvature <10 mm were selected. Teeth were decoronated with a standard length of 15mm and randomly assigned into five groups, which include K3, ProTaper Next, WaveOne, Reciproc and stainless steel hand K-files. Pre-instrumentation and post-instrumentation CBCT were taken. Centring ability, apical third canal transportation and change in angle of curvature were calculated for each group and compared.
One way ANOVA and Post Hoc Tukey-B tests were used to analyze the data.
With regards to centring ability ProTaper Next showed the maximum centring ability and the least was for Hand K-files. Apical third canal transportation was found to be maximum in Hand K-files and minimal in ProTaper Next. Reciproc produced the least change in canal curvature followed by ProTaper Next, K3 and Hand K-files respectively.
Within the limitation of this study, it may be concluded that ProTaper Next has the best centring with least canal transportation. Reciproc proved to be as good as ProTaper Next.
Centring ability, apical third canal transportation, angle of curvature
