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CC BY-NC-ND 4.0 · Eur J Dent 2016; 10(04): 486-490
DOI: 10.4103/1305-7456.195174
Original Article
Dental Investigation Society

Efficacy of LA Axxess burs, Gates Glidden drills and Protaper Sx in obtaining straight line access in mesiobuccal roots of mandibular first molars: A cone-beam computed tomography assessment

Promila Verma
1   Department of Conservative Dentistry and Endodontics, Faculty of Dental Sciences, King George’s Medical University, Lucknow, Uttar Pradesh, India
,
Rhythm Bains
1   Department of Conservative Dentistry and Endodontics, Faculty of Dental Sciences, King George’s Medical University, Lucknow, Uttar Pradesh, India
,
A. P. Tikku
1   Department of Conservative Dentistry and Endodontics, Faculty of Dental Sciences, King George’s Medical University, Lucknow, Uttar Pradesh, India
,
Anil Chandra
1   Department of Conservative Dentistry and Endodontics, Faculty of Dental Sciences, King George’s Medical University, Lucknow, Uttar Pradesh, India
,
Shibha Mehta
1   Department of Conservative Dentistry and Endodontics, Faculty of Dental Sciences, King George’s Medical University, Lucknow, Uttar Pradesh, India
› Author Affiliations
Further Information

Publication History

Publication Date:
24 September 2019 (online)

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ABSTRACT

Objective: This study aims at cone-beam computed tomography (CBCT) evaluation of the ability of Gates Glidden (GG) drills, Protaper Sx, and LA Axxess burs to produce a straight line access (SLA) in mesiobuccal canals of mandibular first molars. Methodology: Forty-five freshly extracted mandibular teeth with a canal curvature of 10-20° were taken for the study and divided into three groups according to the instruments used for cervical preflaring: Group I (LA Axxess burs), Group II (GG drills), and Group III (Protaper Sx). Pre- and post-instrumentation CBCT images were evaluated for comparing the ability of GG drills, Protaper Sx and LA Axxess burs to produce an SLA in mesiobuccal canals of mandibular first molars. Results: There was no significant change (P = 0.06) in the angle in the preSLA images of LA Axxess Group I (12.37 ± 1.01), GG Group II (13.39 ± 1.74), and Protaper Sx Group III (13.90 ± 1.74). The mean decrease in the angle from preSLA to postSLA was significant for all the three groups (P = 0.0001). However, the mean change was highest in Group I (4.25 ± 1.14), followed by Group II (3.28 ± 1.22) and Group III (2.89 ± 1.53). Conclusion: LA Axxess burs were the most effective in reducing the coronal curvature and produced a straighter access to apical third compared to GG Drills and Protaper Sx.

Key words:

Cervical preflaring - coronal curvature - straight line access
 

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