Influence of Cervical Preflaring on the Incidence of Root Dentin Defects

Borges, Álvaro Henrique; Damião, Monique Sobral; Pereira, Thiago Machado; Filho, Gilberto Siebert; Miranda-Pedro, Fabio Luís; Rosa, Wellington Luiz de Oliveira da; Piva, Evandro; Guedes, Orlando Aguirre

doi:10.1016/j.joen.2017.09.021

Cited by 18 publications

(24 citation statements)

References 34 publications

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“…Performing coronal enlargement has been confirmed to be definitive procedures to allow using of Ni-Ti rotary instruments in curved canals safely as they provide the files a straighter path to the apical end of the canal, while reducing any coronal obstacles or change in direction of the files apically. In addition, pre-flaring tends to diminish procedural errors such as ledge formation and apical transportation (32) .…”

Section: Discussionmentioning

confidence: 99%

Influence of Coronal Pre-Flaring on the Apical Transportation and Dentinal Damage after Preparation of Curved Root Canals

Mohammed¹,

Kamel

Din

2020

ADJ-for Girls

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Purpose: This study was designed to evaluate the influence of pre-flaring on the apical transportation and dentinal damage after preparation of curved root canals using EndoStar (ES5), OneShape (OS) and ProTaper Next (PTN) systems. Material and Methods: Hundred and twenty human mandibular first molars were selected. Pre-operative imaging by CBCT was done for measurement of apical transportation of mesio-buccal root canals then saved. The specimens were grouped into: Group I: Instrumented by ES5 files; Group II: by OS single file; and Group III: by PTN files. Each group was subdivided into subgroups: A: Instrumented without pre-flaring; and B: pre-flared before instrumentation. After instrumentation, all specimens were scanned under the same way as the pre-operative scan and data were saved on the software for evaluation of apical transportation. Roots were sectioned perpendicular to long axis at 3, 6 and 9mm from the apex and viewed under SEM for detection of any defect arise from lumen outwards. The significance was set at P < 0.05. Results: All values of apical transportation at level 2mm from apex were positive that indicated direction of transportation toward mesial direction of root canal, whereas at level 4mm from apex were negative that indicated direction of transportation toward distal direction of root canal. In dentinal defects at 6 mm, the higher percent of cracks was noted in OS and the lowest for PTN. Conclusions: Pre-flaring of root canal reduces the apical transportation and dentinal defects when curved root canals were prepared with Ni-Ti instruments.

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Section: Discussionmentioning

confidence: 99%

Influence of Coronal Pre-Flaring on the Apical Transportation and Dentinal Damage after Preparation of Curved Root Canals

Mohammed¹,

Kamel

Din

2020

ADJ-for Girls

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“…After that, the external root surfaces were examined under a stereomicroscope to exclude the possibility of any preexisting defects (13). The teeth were cleaned and stored in distilled water until the time of use (14). (Figure -1) # size 10 K-file was introduced into the canals until just visible at the apical foramen to ensure apical patency then 1 mm was subtracted from this measurement to establish the working length.…”

Section: Methodsmentioning

confidence: 99%

INCIDENCE OF DENTINAL DEFECTS AFTER ROOT CANAL PREPARATION USING HYFLEX EDM and MPRO FILES

Almakarem

Genena

Motie

et al. 2020

Alexandria Dental Journal

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INTRODUCTION:The use of motor-driven nickel-titanium (Ni-Ti) files in root canal preparation has numerous advantages. However, they might lead to dentinal crack formation which greatly affects the endodontic treatment prognosis. Therefore, new Ni-Ti files have been developed with different heat treatments to enhance file flexibility, thus reduce stress concentration during root canal preparation. AIM OF THE STUDY: To compare the incidence of dentinal defects produced by two motor-driven Ni-Ti systems; Hyflex EDM and MPro files using stereomicroscopic analysis. MATERIALS AND METHODS:This study was conducted on thirty mesio-buccal root canals of human mandibular molars. All teeth were examined under a stereomicroscope to exclude any dentinal defects before instrumentation followed by decoronation and sectioning of distal roots. The root canals were randomly divided into three equal groups according to the file system used. Group I: Hyflex EDM files with continuous rotation motion. Group II: MPro files with continuous rotation motion, ending the preparation till tip size 25 in both groups. Group III: unprepared canals (negative control). All roots were sectioned at 3, 6, and 9 mm from the apex using a precision cutter device. Stereomicroscope analysis was performed in all sections. Data were statistically analyzed. RESULTS: All groups (including the control group) showed no dentinal defects with no statistically significant differences between the test groups and the control group at all levels. CONCLUSIONS: The new generations of heat-treated rotary files could produce root canal preparation with less dentinal defects owing to their enhanced physical and mechanical properties.

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“…Arslan et al 139 showed that GG drills led to increased incidence of dentinal microcracks compared with ProTaper Universal (SX), EndoFlare, Revo-S (MicroMega), and HyFlex (Coltene, Langenau, Germany), which were similar to the control group (left unprepared). Borges et al 141 compared the instrumentation of several systems (Reciproc, WaveOne, ProTaper Universal, ProTaper Next, ProFiles, and K-files driven by an oscillatory system) with and without coronal preflaring. Results showed that coronal preflaring reduced the incidence of root dentin defects under stereomicroscopic observation.…”

Section: Preflaringmentioning

confidence: 99%

Influence of Negotiation, Glide Path, and Preflaring Procedures on Root Canal Shaping—Terminology, Basic Concepts, and a Systematic Review

Plotino¹,

Nagendrababu

Bukiet

et al. 2020

Journal of Endodontics

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Influence of Cervical Preflaring on the Incidence of Root Dentin Defects

Cited by 18 publications

References 34 publications

Influence of Coronal Pre-Flaring on the Apical Transportation and Dentinal Damage after Preparation of Curved Root Canals

Influence of Coronal Pre-Flaring on the Apical Transportation and Dentinal Damage after Preparation of Curved Root Canals

INCIDENCE OF DENTINAL DEFECTS AFTER ROOT CANAL PREPARATION USING HYFLEX EDM and MPRO FILES

Influence of Negotiation, Glide Path, and Preflaring Procedures on Root Canal Shaping—Terminology, Basic Concepts, and a Systematic Review

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