Redefining Root Canal Shaping: From Size to Volume-The Functional Endodontic Volume Concept.

Aim: This article aims to introduce and elaborate on the innovative concept of Functional Endodontic Volume (FEV), a biologically driven approach to root canal shaping. This concept emphasizes the importance of volumetric preparation aimed at enhancing irrigation dynamics during root canal treatment, all while maintaining the tooth's structural integrity.

Summary: In recent years, contemporary endodontics has progressively shifted towards methods that prioritize irrigation-based disinfection.

The influence of cavity design on the mechanical behavior of endo-crown restorations: an ex-vivo study.

Background: Root canal-treated teeth often exhibit significant structural loss, necessitating effective and conservative restorative techniques. The present study aimed to assess the effect of cavity design on the fracture resistance of endo-crown restorations.

Materials And Methods: Thirty human mandibular first molars were carefully chosen based on a sample size estimation.

The impact of different mechanical file systems with or without adjunctive approaches on disinfection of oval root canals: an ex vivo study.

Background The available evidence does not conclusively demonstrate the superiority of a specific file system for effectively disinfecting oval root canals. Additionally, it remains unclear whether adjunctive methods can enhance the disinfection of oval canals.Objectives The study aimed to compare bacterial reduction in oval canals using a single-file versus multi-file system, with or without adjunctive disinfection.

Exploiting the power of stepwise intraoperative irrigant activation to maximize oval canal disinfection: an ex-vivo investigation.

Objectives: To evaluate the antibacterial effectiveness of stepwise intraoperative activation of the root canal irrigant, both alone and when combined with conventional ultrasonic activation, compared to the traditional syringe irrigation method in oval root canals.

Methods: Sixty single-rooted maxillary second premolars were selected according to specific criteria. After creating an access opening and root canal patency in all samples, a cycle of autoclave sterilization was conducted.

Change in the size of apical radiolucencies in adolescent's mature maxillary incisors following retreatment with two regenerative endodontic techniques: a 12-month randomised clinical trial using volume-based cone-beam computed tomography.

Objectives: The primary aim of this randomised clinical trial was to compare the one year clinical and radiographic outcome of mature permanent central incisors with periapical radiolucencies in adolescents after root canal retreatment using two regenerative endodontic procedures (REPs) with revitalization using induced blood clot formation (BC) or platelet-rich fibrin (PRF) evaluated with cone-beam computed tomography (CBCT). The secondary aim was to assess the responses of the teeth to thermal and electric pulp tests.

Materials And Methods: Fifty-four root filled maxillary central incisors with post-treatment endodontic disease and periapical radiolucencies in 48 adolescents were allocated into two groups (n = 27) using permuted block randomisation.

The impact of passive ultrasonic irrigation on the bond strength of two different self-etch adhesives to human pulp chamber dentine: a laboratory investigation.

Objectives: To evaluate the impact of passive ultrasonic irrigation on the micro-tensile bond strength of two different self-etch adhesive systems, including a universal one-step adhesive and a two-step adhesive system, to pulp chamber dentine compared to conventional syringe irrigation.

Methods: Twenty-four extracted human mandibular first molar teeth were chosen according to strict criteria and mounted in epoxy resin blocks. Subsequently, the pulp chambers were exposed using an Isomet cutting machine.

Clinical and radiographic outcomes of non-surgical retreatment of mature maxillary incisions using two regenerative endodontic techniques in adolescents: a 24-month randomized clinical trial.

Aims: The primary aim was to monitor the healing of the periapical radiolucencies of adolescents' mature permanent teeth with apical periodontitis after root canal retreatment with two REPs techniques at 24 months of follow-up. The secondary aim was to assess clinical outcomes and positive responses of retreated teeth to pulp sensibility tests.

Methodology: Forty adolescents with 48 teeth were enroled and randomly allocated into two equal groups after being matched according to their periapical index (PAI) scores.

Unveiling the mechanical performance of partially replaced coronal restorations in root canal-treated teeth: an in-vitro study.

Objectives: To compare the mechanical performance of partially replaced (repaired) intra-coronal restorations to totally replaced ones in root canal-treated teeth.

Methods: Thirty maxillary second premolars were selected according to strict criteria, mounted on moulds, and had mesio-occluso-distal (MOD) cavities prepared. Resin composite restorative material was used to perform the initial restoration, followed by aging procedures using thermo-mechanical cycling fatigue to replicate six months of intraoral aging.

Cryotherapy and pain intensity during endodontic treatment of mandibular first permanent molars with symptomatic irreversible pulpitis: A randomized controlled trial.

Objectives: The study aimed to assess the effectiveness of cryotherapy application after inferior alveolar nerve block (IANB) administration of the mandibular first permanent molars with symptomatic irreversible pulpitis (SIP) in adolescence. The secondary outcome was to compare the need for supplemental intraligamentary injection (ILI).

Materials And Methods: The study was designed as a randomized clinical trial including 152 participants aged from 10 to 17 years who were randomly assigned to two equal groups; cryotherapy plus IANB (intervention group) and the control group (conventional INAB).

Evaluation of Dentine Structure Loss after Separated File Retrieval by Three Different Techniques: An Ex-vivo Study.

Objective: To evaluate the success rate of retrieving separated instrument, the root canal volume changes using cone-beam computed tomography and the retrieval time using Ruddle's technique, Terauchi file retrieval kit (TFRK) and Endo Rescue kit.

Methods: Sixty human mandibular first molars were selected, and a 4-mm portion of #25/.04 rotary files were separated in the middle third of moderately curved mesio-buccal canals.

Inferior Alveolar Nerve Block Plus Cryotherapy Anesthesia Success in Pulpectomy Of Primary Molars with Irreversible Pulpitis: a Randomized Clinical Trial.

Purpose: The primary purpose of this study was to assess the efficacy of cryotherapy applications on the success of an inferior alveolar nerve block (IANB) to reduce pain severity during a pulpectomy of primary molars with symptomatic irreversible pulpitis (SIP). The secondary purpose was to assess children's behavior before and during pulpectomy procedures and the need for supplementary local anesthesia injections.

Methods: A randomized parallel controlled trial included 170 healthy children aged five to nine years who complained of carious primary mandibular second molars with SIP.