Impact of Canal Taper and Access Cavity Design on the Life Span of an Endodontically Treated Mandibular Molar: A Finite Element Analysis

Elkholy, Mostafa M.A.; Nawar, Nawar Naguib; Ha, William Nguyen; Saber, Shehabeldin Mohamed; Kim, Hyeon‐Cheol

doi:10.1016/j.joen.2021.06.009

Cited by 32 publications

(27 citation statements)

References 36 publications

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“…This could be explained by increase amount of dentine removed with increasing the degree of taper combined with the higher bond strength of AH plus compared to MTA Fillapex (37,38) , due to its low shrinkage, accompanied by the long term dimensional stability (39) , and high power of penetration to dentinal tubules and micro-irregularity (32,33) . The limitation of the present study is that the teeth were decoronated to obtain standardised root length that do not represent true clinical conditions (40) , also it does not take in consideration the impact of access cavity design on the FR of endodontically treated teeth (41,42) , in addition to previous limitation; it has found that the coronal tooth anatomy, coronal restoration, occlusion, and parafunctional behaviours all have an indisputable influence on the FR of teeth (43,44) .…”

Section: Discussionmentioning

confidence: 97%

The Effect of Files Taper and Root Canal Sealer Materials on Fracture Resistance of the Roots (In-Vitro Study)

Abada

2022

Egyptian Dental Journal

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Aim of the study was to investigate the effect of taper and sealer materials on the fracture resistance (FR) of roots.Material and method: Total number of 120 single-canalled human mandibular central and lateral teeth with equal size were chosen and kept in distilled water until needed, all teeth were decoronated and divided into one positive control group (n=12) and three experimental groups (n=36) according to the degree of taper used for root canal instrumentation using K3XF ** files system (#25/4%, #25/6% and #25/8%), each experimental group was further subdivided into one negative control subgroup (n=12) in which the root canal instrumented but not obturated and two experimental subgroups (n=12) according to type of root canal sealer used for obturation (AH Plus *** and MTA Fillapex **** ). Each specimen was embedded in acrylic mould and subjected to FR test using a universal testing machine. The force required to fracture each specimen was recorded and the data obtained were statistically analysed.Results: Group 1 showed highest FR among all experimental groups followed by group 2 with non-significance difference between both groups while group 3 (#25/8%) showed the least FR. MTA Fillapex subgroup showed less non-significantly difference from AH Plus subgroup regardless the degree of taper used for preparation. Conclusion:Using 4% and 6% taper preparation have non-significant difference from each other when using AH plus or MTA Fillapex sealer. MTA Fillapex did not significantly improve the FR of the root regardless the preparation taper used.

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Section: Discussionmentioning

confidence: 97%

The Effect of Files Taper and Root Canal Sealer Materials on Fracture Resistance of the Roots (In-Vitro Study)

Abada

2022

Egyptian Dental Journal

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“…Additionally, many of these teeth are subject to multiple traumatic incidents ( Koç and Del Fabbro, 2020 ) increasing the chances of loss of these teeth. Hence a major critical objective for any type of endodontic treatment; conventional or regenerative is to ensure optimal tooth survival and retention ( Elkholy et al, 2021 ). By minimizing tooth structure removal as we elaborated in this review, fracture resistance of such teeth can be maintained ( Isufi et al, 2020 ; Elkholy et al, 2021 ), at the same time, to avoid sacrificing disinfection for the sake of preserving tooth structure, we suggest an alternative enhanced disinfection protocol that would conserve sound tooth structure while at the same time maintain an appropriate level of disinfection to allow stem cell migration and success of the final regenerative treatment.…”

Section: Discussionmentioning

confidence: 99%

“…Excessive removal of tooth structure accompanying a TEC especially at pulp chamber walls and around the canal orifices, may decrease the tooth resistance to fracture during function. This fact could be more prominent in REPs where the bulk of dentin is initially much less compared to mature teeth ( Elkholy et al, 2021 ).…”

Section: Regenerative and Minimally Invasive Endodontic Procedures: T...mentioning

confidence: 99%

Regenerative Endodontics and Minimally Invasive Dentistry: Intertwining Paths Crossing Over Into Clinical Translation

Elnawam

Abdelmougod

Mobarak

et al. 2022

Front. Bioeng. Biotechnol.

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Regenerative endodontic procedures have been described for over a decade as a paradigm shift in the treatment of immature necrotic permanent teeth, owing to their ability to allow root maturation with subsequent enhancement of the tooth’s fracture resistance in addition to the potential for regeneration of vital intracanal tissues. Concomitantly, minimally invasive endodontics is another rising concept with the main concern of preservation of tooth structure. Stemming from their potential to preserve the original tooth structure, both regenerative and minimally invasive endodontics could be considered as two revolutionary sciences with one common goal. Achieving this goal would entail not only employing the appropriate strategies to recreate the ideal regenerative niche but modifying existing concepts and protocols currently being implemented in regenerative endodontics to address two important challenges affecting the outcome of these procedures; conservation of tooth structure and achieving effective disinfection. Therefore, the search for new biomimetic cell-friendly disinfecting agents and strategies is crucial if such a novel integratory concept is to be foreseen in the future. This could be attainable by advocating a new merged concept of “minimally invasive regenerative endodontic procedures (MIREPs),” through modifying the clinical protocol of REPs by incorporating a minimally invasive access cavity design/preparation and biomimetic disinfection protocol, which could enhance clinical treatment outcomes and in the future; allow for personalized disinfection/regeneration protocols to further optimize the outcomes of MIREPs. In this review, we aim to introduce this new concept, its realization and challenges along with future perspectives for clinical implementation.

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“…Authors conclude that, tooth life is more affected by the design of the access cavity than by the different tapers of the prepared canals [29] , because stress patterns migrate apically rather than concentrating in the pericervical area. Crack initiation and propagation can occur anywhere on the root surface [30] .…”

Section: Fracture Resistancementioning

confidence: 99%

Minimally invasive endodontics, an overview and current update

Andrade¹,

Treviño²,

Delgado³

et al. 2022

Int. J. Appl. Dent. Sci.

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Introduction:The small access cavities could make it more difficult to visualize the pulp chamber as well as to locate, shape, clean and fill the canals. At the same time, increase the risk of iatrogenic complications. (Silva et al., 2020) Objective: To analyze the literature concerning the influence of minimally invasive endodontic access in pulp therapy, in relation to the degree of disinfection, degree of conformation, quality of obturation and resistance to the fracture. Methodology: By searching in electronic databases such as PubMed, using keywords: "minimally invasive endodontics", "degree of disinfection", "shaping", "obturation" and "resistance to fracture". Results: A true compromise of the degree of conformation of the canal is not demonstrated, although neither a benefit, when performing a contracted endodontic cavity (CEC). It is not possible to reach an adequate conclusion about the degree of disinfection in a CEC; priority should be given to a traditional endodontic cavity (TEC). Efficient canal obturation in CEC is limited to a single obturation technique, but if it is not intended to work under this protocol, the use of a TEC is suggested. No noticeable change in fracture strength is demonstrated in a CEC over a TEC. Conclusions: Success of endodontic treatment is represented by each of the stages that make up the procedure. CECs are an alteration to the traditional protocol and with it to the rest of the treatment stages.

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Impact of Canal Taper and Access Cavity Design on the Life Span of an Endodontically Treated Mandibular Molar: A Finite Element Analysis

Cited by 32 publications

References 36 publications

The Effect of Files Taper and Root Canal Sealer Materials on Fracture Resistance of the Roots (In-Vitro Study)

The Effect of Files Taper and Root Canal Sealer Materials on Fracture Resistance of the Roots (In-Vitro Study)

Regenerative Endodontics and Minimally Invasive Dentistry: Intertwining Paths Crossing Over Into Clinical Translation

Minimally invasive endodontics, an overview and current update

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