Endodontics and Endodontology Commons^™

Retreatability Of Bioceramic And Resin-Based Root Canal Sealers Using Xp Shaper Rise: An In Vitro Study, Muhammed Ahmed Omar Abouel Seoud Phd, Shehab Saber

Dentistry

Aim: The purpose of this study was to investigate in-vitro the retreatability of premixed calcium-silicate-based sealer versus resin-based sealer when combined with gutta-percha using the single-file system XP-endo Rise.Materials and methods: 26 canals in typodont acrylic Nissin teeth were instrumented with E-flex blue rotary instruments up tosize 0.35mm and taper of 4%. Root canals were divided into two groups, obturated using either hydraulic condensation techniquewith a bioceramic sealer (n=13) or continuous wave of compaction (CWC) technique with a resin-based sealer (n=13). Theretreatment procedure was done for both groups using the XP-endo Rise instruments. The time required to complete theretreatment procedures …

Accuracy Of Endodontic Access Guides Printed By A Costefficient 3d Printer (An In-Vitro Study), Shehabeldin Mohamed Saber Prof.Dr.

Dentistry

Aim: This study evaluated the precision and trueness of endodontic access guides fabricated using a cost-effective desktop LCD 3D

printer compared to a higher-cost SLA printer for guided endodontics.

Materials and methods: Thirty-two root canals from Nissin typodont teeth were divided into two groups: LCD and SLA. Virtual

planning was performed, and endodontic guides were fabricated using both 3D printing technologies. Pre-operative and postoperative

cone beam tomography (CBCT) scans were taken, and the linear deviation between the planned and actual access paths

was measured at two axial levels: the occlusal entry point and the canal orifice. Statistical analyses were conducted …

Retreatability Of Bioceramic And Resin-Based Root Canal Sealers Using Xp Shaper Rise: An In Vitro Study, Shehabeldin Mohamed Saber Prof.Dr.

Dentistry

Aim: The purpose of this study was to investigate in-vitro the retreatability of premixed calcium-silicate-based sealer versus resinbased

sealer when combined with gutta-percha using the single-file system XP-endo Rise.

Materials and methods: 26 canals in typodont acrylic Nissin teeth were instrumented with E-flex blue rotary instruments up to

size 0.35mm and taper of 4%. Root canals were divided into two groups, obturated using either hydraulic condensation technique

with a bioceramic sealer (n=13) or continuous wave of compaction (CWC) technique with a resin-based sealer (n=13). The

retreatment procedure was done for both groups using the XP-endo Rise instruments. The time required …

Post-Operative Pain After Non-Surgical Root Canal Treatment With A Single Cone/ Bio-Ceramic Sealer Based Obturation: A Randomized Clinical Trial, Shehabeldin Mohamed Saber Prof.Dr.

Dentistry

Aim: compare the post- operative pain associated with sealer-based obturation technique (SBO) using bioceramic sealer and a (CWC) obturation technique with a resin-based sealer.

Materials and methods: two-arm randomized clinical trial with 2 parallel groups 20 patients each, after shaping the canals to a minimum dimension of 30/.04, except for a single middle mesial canal, which was shaped to 25/.04 patients randomly allocated into two groups based on the obturation material used. To ensure patient privacy, each name was replaced with a case number. Patients documented their pain on a 0–10 (VAS) at: 4 hours, one day, and two days …

Intracanal Microbial Reduction After Root Canal Preparation With Different Tapered Instruments. An Ex-Vivo Study, Shehabeldin Mohamed Saber Prof.Dr.

Dentistry

Aim: The objective of this ex vivo study was to assess the dual impact of instruments taper and irrigation activation methods on bacterial reduction in infected root canals.

Materials and methods:42 extracted human molar teeth were inoculated with Enterococcus faecalis for 2 weeks to develop a mature biofilm. The samples were divided into four experimental groups and two control groups. The experimental groups underwent root canal preparation using two different instruments: XP Shaper (taper 0.04) and Reciproc Blue R25 (taper 0.08). Additionally, two different activation methods were tested: mechanical (XP Finisher) and sonic (EDDY). Bacterial reduction was assessed using Colony …

Intracanal Microbial Reduction After Root Canal Preparation With Different Tapered Instruments. An Ex-Vivo Study, Hala Fayek Khalil, Shehab Eldin Moahmed Saber, Mostafa Kholy, Soha Elhady, Esraa Abdelwahab

Dentistry

Aim: The objective of this ex vivo study was to assess the dual impact of instruments taper and irrigation activation methods on bacterial reduction in infected root canals. Materials and methods:42 extracted human molar teeth were inoculated with Enterococcus faecalis for 2 weeks to develop a mature biofilm. The samples were divided into four experimental groups and two control groups. The experimental groups underwent root canal preparation using two different instruments: XP Shaper (taper 0.04) and Reciproc Blue R25 (taper 0.08). Additionally, two different activation methods were tested: mechanical (XP Finisher) and sonic (EDDY). Bacterial reduction was assessed using Colony …

Cytocompatibility, Osteogenic Potential, Antibacterial And Antibiofilm Efficacy Of A Calcium‑Silicate‑Based Intracanal Medication, Shehabeldin Mohamed Saber Prof.Dr., Shereen Nader

Dentistry

This study assessed the biological and antimicrobial properties of a calcium silicate-based material and calcium hydroxide (CH) when used as intracanal medications. MTT assay, osteogenic differentiation of human periodontal stem cells (hPDLSCs), cell mineralization-assay, and determination of ALP activity were assessed to investigate the biological properties. While the agar well diffusion, crystal violet (CRV) assay and LIVE/DEAD staining of dentin slices infected with a mature E. faecalis biofilm were used to assess the antimicrobial properties. Normally distributed data were analyzed using one and two-way ANOVA and post hoc Tukey test, while for non-normally distributed data Kruskal Wallis and Dunn's tests …

Ex-Vivo Evaluation Of Clinically-Set Hydraulic Sealers Used With Di!Erent Canal Dryness Protocols And Obturation Techniques: A Randomized Clinical Trial, Shehabeldin Mohamed Saber Prof.Dr.

Dentistry

Objectives This 2-part randomized parallel triple-blind clinical trial adopts a unique model assessing clinically-set hydraulic

calcium silicate-based sealers (HCSBS) after different root canal dryness protocols and obturation techniques.

Methods For the first phase of the study, 24 teeth scheduled for orthodontic extractions were allocated into four groups

according to the canal dryness protocol and the obturation technique. G1 (CLC-AHP): cold lateral compaction (CLC) with

AH Plus sealer, G2 (CLC-ES-SD): CLC with Endosequence (ES) after standard canal(s) dryness (SD); G3 (SC-ES-SD):

matching single-cone (SC) with ES after SD; G4 (SC-ES-PD): as G3 but after partial canal(s) dryness (PD). Teeth were

extracted …

Does Reduced Taper Canal Preparation Increase The Load Capacity Of Endodontically Treated Teeth?, Shehabeldin Mohamed Saber Prof.Dr.

Dentistry

Objectives: The aim of this in-vitro study is to assess and compare the load capacity of teeth with canals prepared using progressive taper versus regressive taper.

Methods: Twenty-seven extracted mandibular molars were categorized into three equal groups. The negative control group involved teeth that were accessed and restored with composite resin without canal preparation. The regressive canal preparation group used the TruNatomy file system, while the progressive canal preparation group employed the ProTaper Gold system. Subsequently, all samples underwent loading using a universal testing machine until tooth fracture occurred. The force required to fracture each tooth was recorded in Newton. …

Evaluation Of The Quality Of Root Canal Obturation Using Resin And Silicon-Based Sealers: A Randomized Clinical Trial, Shehabeldin Mohamed Saber Prof.Dr.

Dentistry

Aim: to assess and compare the quality of root canal obturation using AH Plus and GuttaFlow 2 in patients with symptomatic

irreversible pulpitis.

Materials and methods: This randomized clinical trial included 50 participants with mandibular molars diagnosed with

symptomatic irreversible pulpitis. Participants were randomly assigned to two groups: the AH Plus group (RBS) and the

GuttaFlow 2 group (SBS). Clinical procedures included local anesthesia, access cavity preparation under a surgical microscope,

rubber dam isolation, and root canal preparation using the ProTaper Gold system. For the RBS group, AH Plus sealer was used

with cold lateral condensation, while for the SBS …

Evaluation Of The Quality Of Root Canal Obturation Using Resin And Silicon-Based Sealers: A Randomized Clinical Trial, Kareem Darwish, Engy M. Kataia, Shehabeldin Saber

Dentistry

Aim: to assess and compare the quality of root canal obturation using AH Plus and GuttaFlow 2 in patients with symptomatic irreversible pulpitis. Materials and methods: This randomized clinical trial included 50 participants with mandibular molars diagnosed with symptomatic irreversible pulpitis. Participants were randomly assigned to two groups: the AH Plus group (RBS) and the GuttaFlow 2 group (SBS). Clinical procedures included local anesthesia, access cavity preparation under a surgical microscope, rubber dam isolation, and root canal preparation using the ProTaper Gold system. For the RBS group, AH Plus sealer was used with cold lateral condensation, while for the SBS …

Antimicrobial Efficacy Of Different Intracanal Medicaments Used In Regenerative Endodontics Against A Mature Multi-Species Biofilm Model (An Ex-Vivo Study), Shehabeldin Mohamed Saber Prof.Dr.

Dentistry

Introduction: The aim of this study was to compare the efficacy of different antimicrobial agents, including Ciprofloxacin, Doxycycline, Clindamycin, Metronidazole, Amoxicillin and Clavulanate, Triple antibiotic paste (TAP) and Calcium hydroxide (CH), as intra-canal medications for regenerative endodontics against an aged, multispecies ex-vivo biofilm model.

Methods: A total of one hundred fifty single-rooted human teeth were used in this study. Fifteen teeth were used to monitor the formation and maturation of a multispecies biofilm model consisting of Enterococcus faecalis, Staphylococcus epidermidis and Candida albicans. After 21 days of incubation, the other one-hundred and thirty-five teeth were divided into 9 equal …

Effect Of Different Calcium Hydroxide Formulations Used During Regenerative Endodontic Procedures On The Viability, Mineralization, And Dentino/Cemento/Osteogenic Differentiation Potential Of Human Periodontal Ligament Stem Cells. An In-Vitro Study., Mohamed Medhat Kataia, Muhammed Abouel Seoud, Shehab Eldin Saber, Shereen Nader, Hadeel Mousa

Dentistry

Aim: To evaluate the effect of CH and NCH on the viability, attachment, osteogenic, cementogenic and dentinogenic differentiation potential of hPDLSCs in-vitro.
Materials and Methods: Calcium Hydroxide (CH) and nano calcium hydroxide (NCH) powders were initially characterized using transmission electron microscope (TEM), X-ray Diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy, and a zeta sizer instrument. Standard dentin discs were prepared, irrigated according to the Regenerative Endodontic Procedures (REP) protocol, then treated with 1 mg/ml of CH or NCH pastes, and incubated for 1 week. Untreated discs served as control. Then, they were washed off, and all discs were treated with …

Would Access Cavity Design Affect The Mechanical Behavior Of Tooth: A Finite Element Study, Mohamed Ashraf Elhusseini1, Hala Fayek Khalil, Engy M. Kataia

Dentistry

Introduction: Two distinct access cavity designs were used to access Two simulated finite element

models (FE) Lingual (LAC) and incisal (IAC)). Three experimental FE models, including the IT

model, were developed: LAC and IAC.

Methods: For every simulated model, one distinct radicular preparations was carried out of size

#30/.04. The incisal edge was subjected to an occlusal cycle load of 120 N. The maximum von

mises stresses (VMS), maximum principal stresses (MPS), and stress distribution patterns were

assessed and calculated quantitatively.

Results: The traditional access design showed slightly higher fracture resistance to loading than

the conservative incisal access cavity design. …

Effectiveness Of Full Pulpotomy Compared With Root Canal Treatment In Managing Teeth With Signs And Symptoms Indicative Of Irreversible Pulpitis: A Protocol For Prospective Meta-Analysis Of Individual Participant Data Of Linked Randomised Clinical Trials (Prove), Shehabeldin Mohamed Saber Prof.Dr.

Dentistry

Background: Full pulpotomy has been proposed as an alternative to root canal treatment in teeth with signs and symptoms indicative of irreversible pulpitis (IRP), but the evidence is limited, relying on underpowered studies with a high risk of bias. The aim of this study is to conduct a prospective meta-analysis (PMA) of individual participant data of a series of individual randomised trials to provide robust evidence on the clinical and cost-effectiveness of pulpotomy compared with root canal treatment. Methods: Individual participant data will be obtained from a series of randomised trials designed and conducted by a consortium of multi-national investigators …

Anatomical Analysis Of Inferior Alveolar Nerve Relation To Mandibular Posterior Teeth Using Cone Beam Computed Tomography: A Retrospective Radiographic Analysis Study, Shehabeldin Mohamed Saber Prof.Dr.

Dentistry

Introduction: Cone beam computed tomography (CBCT) is reliable in the assessment of structures related to teeth. The assessment of the inferior alveolar neurovascular (IAN) bundle location using CBCT is considered one of its prime uses in different mandibular surgeries. Methodology: Retrospective CBCT data of patients presented to the institute were assessed to measure relations of IAN. Measurements were taken to assess the bone thickness adjacent to IAN, the superior-inferior dimension between the canal and the teeth, and the dimension between the canal and the inferior border of the mandible. Results: Out of the 170 patients the root apices nearest to …

Impact Of Angle Of File Access And Location Of Canal Curvature On The Dynamic Cyclic Fatigue Of Nickel Titanium Rotary Instruments, Shehabeldin Mohamed Saber Prof.Dr.

Dentistry

Objective: To evaluate the impact of different file access angles and root canal curvature’s location on the fatigue failure of One Curve (OC) and E3 Azure (EZ) NiTi files using a dynamic model at simulated body temperature. Methods: Eighty new instruments with similar tip sizes and taper (#25/0.06) from two NiTi rotary systems, One Curve and E3 Azure, were tested at simulated body temperatures (37°C) using a custom-made dynamic cyclic fatigue device. Instruments were divided into four subgroups according to the location of root canal curvature (a coronal curve 5 mm from the root canal orifice and an apical curve …

Physicochemical Properties Of Ah Plus Bioceramic Sealer, Bio-C Sealer, And Adseal Root Canal Sealer, Shehabeldin Mohamed Saber Prof.Dr.

Dentistry

Background: The aim of this study was to evaluate the physicochemical properties of two newly introduced premixed calcium silicate-based root canal sealers (AH Plus Bioceramic Sealer and Bio-C Sealer) compared to a resin-based root canal sealer (ADseal root canal sealer). Methods: Solubility, pH analysis, calcium ion release, and film thickness of each sealer were evaluated following ISO guidelines. The data were examined using the two-way ANOVA test. Furthermore, X-ray diffraction (XRD) examination was performed to investigate the crystalline phase of each type of sealer. X-ray fluorescence (XRF) analysis was done for the chemical elemental analysis of each sealer. Results: The …

Two-Year Clinical Performance Of Indirect Restorations Fabricated From Cad/Cam Nano Hybrid Composite Versus Lithium Disilicate In Mutilated Vital Teeth. A Randomized Controlled Trial, Shehabeldin Mohamed Saber Prof.Dr.

Dentistry

Trial design: This is a randomized, controlled, superiority, double-blinded, parallel-group, two-arms trial with an allocation ratio of 1:1. The aim of this trial was to compare the two-year clinical performance of partial indirect restorations fabricated from CAD/CAM nano-hybrid composite and ceramic lithium disilicate blocks using the modified USPHS criteria. Methods: In two parallel groups (n = 50 restorations), fifty participants having mutilated vital teeth with a minimum of two remaining walls were randomly enrolled in this trial and received indirect restorations of either nano-hybrid composite resin blocks (Brilliant, Coltene, Switzerland) or Lithium Disilicate (IPS Emax CAD). The restorations were assessed …

Evaluation Of Different Approaches For Management Of Separated Endodontic Instruments. (In-Vitro Study), Engy M. Kataia Professor, Hala Fayek Ass. Professor, Osama Ahmed El-Karamany

Dentistry

Objective: to evaluate different approaches (ultrasonic troughing, and trephine bur

with extractors) to manage separated endodontic instruments.

Methods and Materials: A block of wax containing mandibular molars were

scanned to get preoperative CBCT to select a total number of 32 mandibular molars

that were later divided into two groups (n=16) according to file retrieval procedure:

Group (A) (control group): the broken segment was retrieved by ET-25 ultrasonic

tips, Group (B): the broken segment was retrieved by micro-extractor (Zumax

retrieval kit). Traditional endodontic access cavity was created, orifice opener was

used to make coronal third enlargement up to 4mm of …

Root And Canal Morphology Of Mandibular Second Molars In An Egyptian Subpopulation: A Cone-Beam Computed Tomography Study, Shehabeldin Mohamed Saber Prof.Dr.

Dentistry

Background: This study was using Cone beam computed tomography (CBCT) to examine the anatomical variations in mandibular second molars in an Egyptian sub-population. Methods: A total of 350 CBCT images (215 females and 135 males, aged 15–65 years) of mandibular second molars were evaluated. Samples were evaluated in terms of: number of roots, number of root canals, roots’ cross section as well as prevalence and configurations of C-shaped canals. Statistical analysis was done to highlight differences between different categories and their prevalence among genders (significance level was set at p < 0.05). Data were presented as frequency and percentage values and were analyzed using chi square test followed by pairwise comparisons utilizing multiple Fisher’s exact tests with Bonferroni correction. The significance level was set at p < 0.05 within all tests. Results: Of the 350 mandibular second molars evaluated, 87.2% were non-C-shaped while 12.8% were C-shaped with no gender-based statistically significant differences (χ2 = 0.19, p = 0.656). Most samples had three root canals (80%) followed by two (16%), then one (3.2%), and finally four (0.8%) root canals. Among the non-C-shaped molars, presence of two roots was most common (83.4%) followed by presence of a single root (16.2%), and only one sample (0.2%) had three roots, and this had no correlation with gender (χ2 = 1.86, p = 0.431). In the mesial roots Type IV Vertucci was the most common configuration found (68.8%), while Type I was the most prevalent in the distal roots (91.8%). The long oval configuration was the most commonly found cross section in mesial roots while “oval” was the most prevalent in distal roots. Conclusion: Egyptian sub-population shows highly variable morphological features in mandibular second molars, hence, CBCT is highly recommended on case-to-case conditions.