‘Volumetric analysis of hand and rotary root canal instrumentation and filling in primary teeth using Spiral Computed Tomography’ – an invitro study

Poornima, P; Disha, Patil; Nagaveni, N B; Roopa, KirishettaR Basavaraj; Bharath, K P; Neena, Indavara Edagunji

doi:10.1111/ipd.12180

Cited by 23 publications

(28 citation statements)

References 13 publications

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“…According to the present results, the null hypotheses for root canal volume and surface need to be rejected, since root canal preparation with both rotary file systems resulted in significantly greater increase in root canal volume and surface in both primary teeth and permanent teeth. These results confirm two recent studies evaluating the shaping effectiveness of different rotary files vs hand files in primary teeth . Presumably, the greater conicity of the rotary instruments compared with conventional hand files contributed to more dentine removal in the coronal region, resulting in greater post‐preparation root canal volume and surface area.…”

Section: Discussionsupporting

confidence: 88%

“…These results confirm two recent studies evaluating the shaping effectiveness of different rotary files vs hand files in primary teeth. 8,26 Presumably, the greater conicity of the rotary instruments compared with conventional hand files contributed to more dentine removal in the coronal region, resulting in greater post-preparation root canal volume and surface area. As a result, the percentage of uninstrumented area in relation to the increase in volume and surface area was lower with the use of rotary file systems.…”

Section: Discussionmentioning

confidence: 99%

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A micro‐computed tomographic assessment of root canal preparation with conventional and different rotary files in primary teeth and young permanent teeth

Esentürk

Akkaș

Çubukçu

et al. 2019

Int J Paed Dentistry

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Background Root canals of primary teeth are commonly prepared with endodontic files that are originally manufactured for permanent teeth. Aim This micro‐computed tomography (micro‐CT) study evaluated and compared the changes in root canal morphology after preparation with different conventional and rotary files in primary teeth and young permanent teeth. Design Seventy‐two extracted primary and permanent molars were selected and randomly assigned to three subgroups according to the file systems used (n = 12/each). After pre‐scanning of teeth with micro‐CT, root canals were prepared with One Shape and Revo‐S rotary systems and conventional endodontic files. After rescanning procedure, changes in canal volume, surface area, uninstrumented surface area, and apical transportation were evaluated. Mann‐Whitney U test, Kruskal‐Wallis test, and Conover's multiple comparison test were used for statistical analysis (P = .05). Results Instrumentation with rotary files resulted in significantly greater volume and surface area of root canals and less uninstrumented areas (P < .001) than with manual files (P < .001). Primary molars showed significantly less apical transportation than permanent teeth (P < .001). Conclusions Preparation of canals with rotary files could be a viable alternative to conventional files in primary teeth. Regardless of the file system used, uninstrumented areas still exist in both primary teeth and permanent teeth.

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Section: Discussionsupporting

confidence: 88%

Section: Discussionmentioning

confidence: 99%

A micro‐computed tomographic assessment of root canal preparation with conventional and different rotary files in primary teeth and young permanent teeth

Esentürk

Akkaș

Çubukçu

et al. 2019

Int J Paed Dentistry

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“…The majority of laboratorial studies have employed ZOE as the gold standard obturation material, evaluating different filling techniques or different obturation materials on an isolated approach. Some studies used radiographs as evaluation method, resulting only in a bidimensional interpretation .…”

Section: Discussionmentioning

confidence: 99%

Root canal obturation materials and filling techniques for primary teeth: In vitro evaluation in polymer‐based prototyped incisors

Aragão

Pintor

Marceliano-Alves

et al. 2019

Int J Paed Dentistry

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Background Achieving a void‐free root canal filling is a challenge in current clinical pulpectomy practice. Aim To compare filling effectiveness and internal voids of root filling materials and obturation techniques in resin‐prototyped primary incisors by micro‐CT. Design Fifty prototypes were instrumented and randomly divided (n = 10) according to the filling materials (Vitapex®, ZOE, Calcicur®, Feapex, and Calen®‐ZO) and obturation technique: lentulo or pressure syringe (n = 5). The specimens were micro‐CT scanned (pixel size = 7.83 μm) and reconstructed, and the total volume of filled canal (%FC) and internal voids (%IV) of the bulk filling material was calculated. Kruskal‐Wallis and Mann‐Whitney tests were used to detect differences and interactions among groups. Results Calen®‐ZO, Vitapex®, and ZOE showed similar %FC. Calcicur® showed lower %FC compared with Calen®‐ZO, Vitapex®, and ZOE (P < .05) but similar to Feapex. No statistically significant differences in %FC between lentulo or pressure syringe were disclosed. Regarding %IV, Vitapex®, and Calen®‐ZO performed better with syringe, although Calcicur® was better with lentulo. The number of voids in the obturation bulk was similar among materials, but always lower (P < .05) in syringe filled specimens. Conclusion Vitapex®, Calen®‐ZO, and ZOE outperformed Calcicur® and Feapex in %FC and if the syringe technique is used, %IV of the obturation bulk and presence of defects was lower.

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“…On the other hand, rotary instrumentation dramatically reduces the working time, which is a very interesting aspect to consider for pediatric patients (1,(3)(4)(5)(6)(7)(8)(9)(10).…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, two recent studies (9,10) showed the use of computed tomography (CT) in the assessment of root canal preparation of primary teeth. Is noteworthy that although there are no studies that assess the biomechanical preparation in primary teeth using micro-computed tomography (micro-CT), this methodology has been commonly used for this purpose in permanent teeth, as it allows a three-dimensional noninvasive assessment of the RCS and root canal preparation (12,(14)(15)(16).…”

Section: Introductionmentioning

confidence: 99%

Mechanical Preparation Showed Superior Shaping Ability than Manual Technique in Primary Molars - A Micro-Computed Tomography Study

et al. 2017

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The aim of the study was to evaluate canal preparation in primary molars with hand files, ProTaper Next and Self-Adjusting File (SAF) by 2D and 3D micro-computed tomography (micro-CT) analysis. Canals of 24 primary molars were prepared with hand files (HF), ProTaper Next (PTN) and SAF (n=8/group). The teeth were scanned before and after root canal preparation and the pre-and postoperative micro-CT images were reconstructed. Changes in 2D (area, perimeter, roundness, minor and major diameter) and 3D [volume, surface area, structure model index (SMI)] morphological parameters, as well as canal transportation and lateral perforations were evaluated (Kruskal-Wallis and ANOVA; α=0.05). SAF presented smaller changes in minor diameter, volume and surface area compared with HF and PTN (p<0.05). PTN presented more circular canals after preparation. 3D analysis revealed greater transportation in HF. PTN and SAF presented more centered canal preparation, especially in curved areas. SAF and HF presented, respectively, the lowest (0.05±0.02 and 0.07±0.04) and highest (0.14±0.11 and 0.29±0.17) apical transportation. There were fewer lateral perforations in SAF (4.2%) and PTN (7.7%) than in HF (47.8%) (p<0.05). In primary molars, mechanical preparation showed better shaping ability than hand files, promoting more centered preparations and lower occurrence of lateral perforations and canal transportation. Clinical Relevance: Manual instrumentation is still reported as the main choice in the primary teeth preparation; however, studies have shown limitations in its use. The morphological characteristics of primary teeth and the limited knowledge of shaping procedures in these teeth using mechanical preparation become a challenge for clinical practice and might impair the predictability of endodontic treatment.

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‘Volumetric analysis of hand and rotary root canal instrumentation and filling in primary teeth using Spiral Computed Tomography’ – an invitro study

Abstract: Rotary root canal instrumentation may be indicated for utilization in primary teeth, for enhancing root canal preparation and good quality of root canal filling.

Cited by 23 publications

References 13 publications

A micro‐computed tomographic assessment of root canal preparation with conventional and different rotary files in primary teeth and young permanent teeth

A micro‐computed tomographic assessment of root canal preparation with conventional and different rotary files in primary teeth and young permanent teeth

Root canal obturation materials and filling techniques for primary teeth: In vitro evaluation in polymer‐based prototyped incisors

Mechanical Preparation Showed Superior Shaping Ability than Manual Technique in Primary Molars - A Micro-Computed Tomography Study

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