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Journal of Indian Society of Pedodontics and Preventive Dentistry Official publication of Indian Society of Pedodontics and Preventive Dentistry
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 ORIGINAL ARTICLE
Year : 2020  |  Volume : 38  |  Issue : 1  |  Page : 48-55

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


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

Correspondence Address:
Dr. Matam Glore Suneetha
Department of Conservative Dentistry and Endodontics, Government Area Hospital Golconda, Hyderabad, Telangana
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/JISPPD.JISPPD_190_19

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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.






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