Evaluation of apical transportation and centring ability of five thermally treated NiTi rotary systems

Pinheiro, Silvia Regina Martelli; Alcalde, Murilo Priori; Vivacqua-Gomes, Nilton; Bramante, Clóvis Monteiro; Vivan, Rodrigo Ricci; Duarte, Marco Antônio Húngaro; Vasconcelos, Bruno Carvalho de

doi:10.1111/iej.12881

Cited by 69 publications

(82 citation statements)

References 28 publications

(84 reference statements)

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“…The flexibility of Hyflex EDM was found to be similar to other CM Wire instruments (Goo et al 2017, Iacono et al 2017. Hyflex EDM has been reported to create a centred root canal preparation, respecting the original root canal anatomy ( € Ozy€ urek et al 2017, Pinheiro et al 2018, Venino et al 2017). In addition, Hyflex EDM instruments revealed a greater angle of rotation at fracture but a lower torque to fracture than M-Wire instruments (Pedull a et al 2016).…”

Section: Electrical Discharge Machining (Hyflex Edm)mentioning

confidence: 65%

New thermomechanically treated NiTi alloys – a review

Zupanc

Vahdat-Pajouh

Schäfer³

2018

Int Endodontic J

311

309

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Section: Electrical Discharge Machining (Hyflex Edm)mentioning

confidence: 65%

New thermomechanically treated NiTi alloys – a review

Zupanc

Vahdat-Pajouh

Schäfer³

2018

Int Endodontic J

311

309

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“…, Pinheiro et al . ). In addition, even after the use of larger instruments, the transportation of all groups did not exceed 0.15 mm, which is considered an acceptable value indicating a satisfactory maintenance of the canal trajectory (Peters , Pinheiro et al .…”

Section: Discussionmentioning

confidence: 97%

“…In addition, even after the use of larger instruments, the transportation of all groups did not exceed 0.15 mm, which is considered an acceptable value indicating a satisfactory maintenance of the canal trajectory (Peters , Pinheiro et al . ). These results are in line with those of other studies that showed that RB and WOG had similar shaping ability (Bürklein et al .…”

Section: Discussionmentioning

confidence: 97%

“…Despite the difference in the NiTi alloy among the instruments, there were no significant differences in canal transportation (P > 0.05). All systems had transportation at below 0.3 mm, which is considered by some studies to be the limit before a negative impact on clinical prognosis occurs (Camargo et al 2018, Pinheiro et al 2018). In addition, even after the use of larger instruments, the transportation of all Table 3 that all systems had a tendency of root canal transportation towards the external root canal walls, regardless of the instrument diameter, which can also be observed in Fig.…”

Section: Discussionmentioning

confidence: 99%

“…According to this formula, a result of 0 (zero) indicated absence of root canal transportation. A negative result indicated transportation to the outer region of the curvature, while a positive result indicated transportation to the inner region of the curvature (Camargo et al 2018, Pinheiro et al 2018).…”

Section: Evaluation Of Root Canal Transportationmentioning

confidence: 99%

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Effect of larger apical size on the quality of preparation in curved canals using reciprocating instruments with different heat thermal treatments

et al. 2019

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Aim To evaluate the influence of larger apical canal enlargement in curved canals using reciprocating systems subjected to various heat treatments. Methodology Ninety mandibular premolars with root curvatures ranging from 20° to 30° were selected and scanned by microcomputed tomography (micro‐CT) before and after root canal preparation with reciprocating systems (n = 30): Reciproc Blue (RB size 25, .08 taper and size 40, .06 taper; VDW, Munich, Germany), WaveOne Gold (WOG size 25, .07 taper and size 35, .06 taper; Dentsply Sirona, Ballaigues, Switzerland) and ProDesign R (PDR size 25, .06 taper and size 35, .05 taper; Easy Dental Equipment, Belo Horizonte, Brazil). Canal transportation, untouched areas, and apical and total root canal volumes were measured. Statistical analysis was performed with the nonparametric Kruskal–Wallis and Dunn's tests and a significance level set at 5%. Results The between‐group comparison revealed no significant difference in untouched areas, canal transportation, and apical root canal volume among the groups (P > 0.05). However, WOG size 35, .06 taper was associated with a significant increase in the percentage of total canal volume in comparison to the PDR size 35, .05 taper (P < 0.05). The within‐group comparison revealed a significant decrease in untouched areas, increase in apical and total root canal volume for all groups when using a larger instrument (P < 0.05). There was no significant difference in transportation among the groups and when a larger apical preparation was created (P > 0.05). Conclusions Larger apical enlargement of curved canals was associated with a decrease in untouched areas, an increase in root canal volume and maintenance of canal trajectory. In addition, all systems were safe and provided similar root canal shapes.

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Adoption of change in endodontic practice after an educational program: A qualitative study

Wolf

Leonard

Vidigsson

et al. 2022

Clinical & Exp Dental Res

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Objectives: The aim was to define the characteristics of successful implementation of new clinical endodontic routines within a public dental health organization, following an educational program.Materials and Methods: Fifteen staff members were strategically selected for the interview. All had completed a theoretical educational intervention including a complementary endodontic treatment strategy and, for the dentists, comprising training in the nickel-titanium-rotary-technique. All experienced the successful acceptance of new clinical routines. Two thematic in-depth audiotaped interviews were conducted, wherein the informants described the implementation process in their own words. The interviews were transcribed verbatim and analyzed according to Qualitative Content Analysis.Results: A theme was identified: A multiple flexible process with governance support and gradual reinforcement of motivation, with the following main categories: Firstly, contextual facilitation, with two subcategories (i) a multifaceted organizational foundation and (ii) a tolerance of flexibility. Secondly, emotional facilitation, with two subcategories (i) an experience of simplification and (ii) an experience of improvement. Conclusion:The results improve the understanding of a multifaceted process underlying the acceptance of changes to clinical endodontic procedures by dentists in a public dental health organization. Important contributing factors identified were governance support, a committed resource person with contextual knowledge, tolerance of flexibility in implementation, and permissive informal communication channels within the local workplace. These findings might be a valuable contribution to an evidence base, facilitating the selection of the most appropriate educational strategy and structure for a specified purpose.

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Evaluation of apical transportation and centring ability of five thermally treated NiTi rotary systems

Abstract: All the thermally treated systems resulted in similar apical transportation. In the cervical region, the Hyflex CM and Prodesign Logic systems were associated with more centred preparations.

Cited by 69 publications

References 28 publications

New thermomechanically treated NiTi alloys – a review

New thermomechanically treated NiTi alloys – a review

Effect of larger apical size on the quality of preparation in curved canals using reciprocating instruments with different heat thermal treatments

Adoption of change in endodontic practice after an educational program: A qualitative study

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