Effect of Root Canal Preparation Techniques on Crack Formation in Root Dentin

Shantiaee, Yazdan; Dianat, Omid; Mosayebi, Golnaz; Namdari, Mahshid; Tordik, Patricia A.

doi:10.1016/j.joen.2018.12.018

Cited by 21 publications

(25 citation statements)

References 33 publications

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“…21 Although the use of different engine driven file systems in irregular canals or canals with morphological variations is still a matter of debate, however, they can be used in majority of the cases. 20 Despite the proven advantages of engine driven systems, in the present study, most practicing dentists still used manual canal preparation with hand instruments as the preferred method of root canal preparation.…”

Section: Discussionmentioning

confidence: 82%

“…Various canal preparation techniques are used during cleaning and shaping of the root canal system. 20 One of the technological advances in endodontics is the introduction of engine driven file systems, which provides a well tapered canal with decreased procedural errors as compared to conventional root canal preparation techniques with stainless steel hand instruments. 21 Although the use of different engine driven file systems in irregular canals or canals with morphological variations is still a matter of debate, however, they can be used in majority of the cases.…”

Section: Discussionmentioning

confidence: 99%

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Trends in Endodontic Protocols Amongst Dentists in Lahore

Lodhi¹,

Ehsan²,

Rafique³

et al. 2020

J Pak Dent Assoc

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OBJECTIVES: To determine the trends in endodontic protocols amongst practicing dentists in teaching institutions and private clinics in Lahore. METHODOLOGY: A cross sectional survey was conducted amongst dentists working in the teaching institutions and in the private clinics of Lahore. A pre-piloted questionnaire survey adopted from Kohli et al with slight modifications was used. In this descriptive study 270 practicing dentists were selected using consecutive sampling with a 5% level of significance and margin of error. RESULTS: The 270 respondents had a mean age of 28.16 ± 6.18 participated in this study among which 111 (41.1%) were males and 159(58.9%) were females with the mean age of 30.28 ± 7.416 and 26.68 ± 4.62 respectively (12.2%) were consultants, 175(64.8%) were general dentists whereas 62(23%) were postgraduate residents. In our study population, 76(28.1%) dentists were using magnification among which 67(88.2%) were using loupes and 9(11.8%) were using microscope. The prevalence of the rubber dam usage for isolation among our respondents was 110(40.7%) only, 201(74.4%) dentists reported for routine removal of smear layer. Manual canal preparation technique was the most commonly used method practiced by 149(55.2%) dentists. 136(50.4%) dentists were using beveled needles for irrigation, whereas only 71(26.3%) were using side venting irrigation needles. Majority of the dentists (45.2%) were not using any method to increase the efficacy of the irrigants. CONCLUSION: There are deficiencies in the endodontic protocols followed by majority of the dentists in Lahore and these short comings should be addressed by governing bodies. KEYWORDS: Root canal therapy, Endodontic, Practice Patterns, Dentists HOW TO CITE: Lodhi Sk, Ehsan S, Rafique A, Saleem MN. Trends in endodontic protocols amongst dentists in Lahore. J Pak Dent Assoc 2020;29(4):239-245. DOI: https://doi.org/10.25301/JPDA.294.239 Received: 30 July 2020, Accepted: 08 September 2020

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Section: Discussionmentioning

confidence: 82%

Section: Discussionmentioning

confidence: 99%

Trends in Endodontic Protocols Amongst Dentists in Lahore

Lodhi¹,

Ehsan²,

Rafique³

et al. 2020

J Pak Dent Assoc

View full text Add to dashboard Cite

show abstract

“…One of the extremely important stages that has undergone major technological advances is the chemicalmechanical preparation of the root canal system, since new techniques and instruments have been used with different proposals, always aiming at more conservative treatments and with greater preservation of root dental structure [5,6,7,8,9]. Currently, with a crown-down preparation philosophy, there is the possibility of using automated techniques, which can be used under rotational or reciprocating kinematics, with nickel-titanium instruments with or without heat treatment, different tapers and specific motors [10,11].…”

Section: Introductionmentioning

confidence: 99%

“…The possibility of formation of cracks in the dental structure is something important and must be taken into account in the case of the mechanical part of the endodontic preparation [6,10,12,16,17,18]. The kinematics and other characteristics of automated instruments are still a recurring question in the works regarding their influence on the formation of apical cracks resulting from the preparation [4,9]. Several current studies have been published in order to analyze the formation of root cracks in teeth after endodontic instrumentation, so it is always advisable to carry out comparison studies as new instruments are developed and commercialized [19,20,21,22].…”

Section: Introductionmentioning

confidence: 99%

The impact of different kinematics on crack formation in root dentin after endodontic instrumentation

Fontana¹,

Derigi²,

Ferraresso³

et al. 2020

IJAERS

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Endodontic instrumentation systems can cause dentinal cracks. These defects may propagate a vertical root fracture to the teeth and extraction will be necessary. The purpose of this study was to compare the formation of root crack caused by the rotatory and reciprocating system. Forty-five extracted human mandibular molars were selected for this study. The mesial roots have been removed and randomly divided into 3 groups according to instrumentation technique: GWG-waveOne Gold primary, GRP: reciproc Blue R25 and GPN -Protaper Next X2. The roots were standardized at 16mm in length and only the mesio buccal canals were prepared by the respective instruments. The mesio-lingual root canal served as control of the research. After root canal instrumentation the roots were the horizontally sectioned at 3, 6 and 9mm from the apex with low-speed saw under water-cooling. The slices were analyzed at X12 magnification with operative microscopy to determine the presence of dentinal cracks. The Friedman test was used to analyze the data. The control did not exhibit and dentinal defects however, all the evaluated systems promoted crack rates. There was no difference among the groups in crack frequency. According to he results, root canal instrumentation with rotatory or reciprocanting files can result in some microcracks in root dentin.

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“…However, there are still many controversies about the type, size, and taper of rotary instruments that are necessary to achieve the ideal treatment outcome. There have also been conflicting results about the impact of the root canal preparation on treatment outcome (38). Petiette et al, concluded that maintaining the original canal shape improves the long-term prognosis of endodontically treated teeth.…”

Section: Discussionmentioning

confidence: 99%

Assessment of Fracture Resistance of Maxillary First Molars after Root Canal Preparation Using Three Different Rotary Instruments (V-Taper, ProTaper, Vortex Blue): Finite Element Analysis

malakpour¹

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Introduction: Long term success of endodontically treated teeth has been one of the most challenging aspects of the field of endodontics due to reduced fracture resistance of these teeth. Recently, researchers have heightened focus on conservative endodontics in order to sustain the tooth integrity, and reduce factors impacting the fracture resistance of endodontically treated teeth. As a result, rotary instrument manufacturers have developed files that have a minimal effect on original root canal anatomy. This study used Finite Element Analysis to investigate the dental biomechanical effect of rotary instrumentation during root canal therapy. The aim of this study is to compare the effect of three rotary file systems (V-Taper, ProTaper, Vortex Blue) with different tapers on fracture resistance of endodontically treated teeth in the presence of various static and dynamic forces applied to different parts of the coronal part of teeth. Materials and Methods: In this study, 3D printed acrylic maxillary first molar from Dental Engineering Laboratories LLC DBA DELabs (True Toothä) was used as the prototype of the research model. The original geometry was modified and prepared for using Spaceclaim software for ANSYS modeling and analysis. The three experimental groups and one control group were created. The ANSYS Boolean operations were done in order to generate four different experimental CAD models. Group one was ProTaper, group two was Vortex Blue and group three was V-Taper. Young modulus and Poisson ratio of all the materials (Enamel, Dentin, Gutta-Percha, Composite) were used for ANSYS software to recognize these volumes and the constituents that are contained within these individual spaces. In this study seven total contact points were considered on the occlusal surface of the models during the chewing cycle. The Von Mises stress and maximum principal stress on the cervical region were computed and analyzed in four different cross sections of pre cervical dentin. Results: The highest Von Mises stress was observed in the ProTaper group although V-Taper and Vortex Blue groups showed homogeneous stress distributions in the cervical regions as well. Tensile stress was concentrated on the palatal side of the palatal root and the distal portion of the distobuccal (DB) root in all the experimental groups. However, the control group had the least amount of stressed area followed by V-Taper group, Vortex Blue and ProTaper. Conclusion: Taper size of endodontic files appears to be one of many factors which affect the distribution of forces along the root structure. Preserving dental hard tissue in precervical dentin significantly reduces the stress concentration in the cervical region and increases the ultimate fracture resistance of the tooth.

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Effect of Root Canal Preparation Techniques on Crack Formation in Root Dentin

Cited by 21 publications

References 33 publications

Trends in Endodontic Protocols Amongst Dentists in Lahore

Trends in Endodontic Protocols Amongst Dentists in Lahore

The impact of different kinematics on crack formation in root dentin after endodontic instrumentation

Assessment of Fracture Resistance of Maxillary First Molars after Root Canal Preparation Using Three Different Rotary Instruments (V-Taper, ProTaper, Vortex Blue): Finite Element Analysis

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