Format

Send to

Choose Destination
J Indian Soc Pedod Prev Dent. 2020 Jan-Mar;38(1):48-55. doi: 10.4103/JISPPD.JISPPD_190_19.

Residual root dentin thickness for three different rotary systems: A comparative cone beam computed tomography in vitro study.

Author information

1
Department of Conservative Dentistry and Endodontics, Government Area Hospital Golconda, Hyderabad, Telangana, India.
2
Department of Conservative Dentistry and Endodontics, Smile Dental Hospital, Hyderabad, Telangana, India.
3
Department of Conservative Dentistry and Endodontics, Clove Dental Hospital, Hyderabad, Telangana, India.
4
Department of Health and Bioinformatics, Grand Valley State University, Allendale Charter Twp, MI, USA.
5
Department of Conservative Dental Sciences, College of Dentistry, Prince Sattam Bin Abdul Aziz University, Al Kharj, Saudi Arabia.

Abstract

Background:

Residual root dentin thickness (RDT) in endodontically treated teeth is a major factor that is responsible for longevity of treated tooth.

Aims and Objectives:

To evaluate and compare the amount of RDT during endodontic treatment using manual K-files and rotary Mtwo, ProTaper Next, and Hero shaper instruments.

Settings and Design:

Anin vitro study was carried out on a sample of 100 freshly extracted human single straight rooted mandibular first premolar teeth.

Methodology:

The teeth were divided into five groups of twenty each and mounted on wax rims for a preoperative cone beam computed tomography scan to calculate the dentin thickness 3 and 6 mm from the apex. All the teeth were treated according to their groups.

Statistical Analysis:

The observations were then statistically analyzed using one-way ANOVA to evaluate the difference among four groups followed by post hoc test for pairwise comparison.

Results:

Maximum preservation of dentin was seen in Group V (cleaning and shaping done with rotary Hero shaper files) at 3 and 6 mm from the apex, whereas minimum preservation of dentin was seen in Group IV at 3 mm (cleaning and shaping done with rotary ProTaper Next files) and Group II at 6 mm (cleaning and shaping done with hand K-stainless steel files) from the apex. Overall there was a statistically significant difference in RDT values between Group V and Groups I, II, III, IV both at 3 and 6 mm from the apex.

Conclusion:

Cleaning and shaping with rotary Hero shaper files preserved more amount of dentin when compared to hand K-files, rotary Mtwo, ProTaper Next.

KEYWORDS:

Hand K-files; Hero shaper files; Mtwo files; ProTaper next files; remaining dentin thickness

PMID:
32174629
DOI:
10.4103/JISPPD.JISPPD_190_19
[Indexed for MEDLINE]
Free full text

Supplemental Content

Full text links

Icon for Medknow Publications and Media Pvt Ltd
Loading ...
Support Center