scholarly journals Efficacy of Reciprocating Instruments in the Removal of Bioceramic and Epoxy Resin-Based Sealers: Micro-CT Analysis

Materials ◽  
2021 ◽  
Vol 14 (21) ◽  
pp. 6670
Author(s):  
Marko Rajda ◽  
Ivana Miletić ◽  
Gorana Baršić ◽  
Silvana Jukić Krmek ◽  
Damir Šnjarić ◽  
...  
Keyword(s):  
Epoxy Resin ◽  
Root Canal ◽  
Filling Material ◽  
Micro Ct ◽  
Root Canal Filling ◽  
Human Teeth ◽  
Root Canals ◽  
Gutta Percha ◽  
Ct Analysis ◽  
Reciprocating Instruments

The objective of this study was to evaluate the efficacy of reciprocating instruments in the removal of bioceramic and epoxy resin-based sealers using micro-CT analysis. Root canals of 40 extracted human teeth were instrumented with a size R25 Reciproc instrument. Specimens were randomly divided into two groups (n = 20) according to the root canal filling material. In the first group, root canals were obturated with AH Plus sealer and Reciproc R25 gutta-percha. In the second group, a combination of bioceramic gutta-percha (TotalFill BC) and bioceramic sealer (TotalFill BC) was used. After one week, the retreatment of all specimens was performed using Reciproc instruments. To analyze the differences in the filling remnants, specimens were scanned in a micro-CT device after obturation and after the retreatment procedure. Statistical analysis was performed using the Mann–Whitney U test (p < 0.05). A combination of bioceramic sealer and bioceramic gutta-percha was more effectively removed from canals using a reciprocating instrument, with a filling remnants volume of 4.01 ± 3.13 mm3, in comparison to the combination of epoxy resin-based sealer and gutta-percha (6.96 ± 2.70 mm3) (p < 0.05). A reciprocating instrument was more effective in removing bioceramic sealers than epoxy resin-based sealers, although none of the root canal filling materials were completely removed from the root canals.

scholarly journals Micro-CT analysis of dentinal microcracks on root canals filled with a bioceramic sealer and retreated with reciprocating instruments

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Andressa Almeida ◽  
Kaline Romeiro ◽  
Marcely Cassimiro ◽  
Luciana Gominho ◽  
Eugênia Dantas ◽  
...  
Keyword(s):  
Root Canal ◽  
Material Removal ◽  
Filling Material ◽  
Micro Ct ◽  
Root Canal Filling ◽  
Root Canals ◽  
Type Iv ◽  
Ct Analysis ◽  
Ah Plus ◽  
Reciprocating Instruments

Abstract This study aimed to analyze the potential occurrence of dentinal defects after the removal of a root canal filling with two different sealers using Reciproc (RC) or Reciproc Blue (RB). The mesial roots of 60 mandibular molars with a Vertucci type IV configuration were selected. The samples were initially instrumented with Reciproc (R25) and then divided into the following four experimental groups according to the endodontic sealer and retreatment instrument (n = 15): BC Sealer/Reciproc (BCRC); BC Sealer/Reciproc Blue (BCRB); AH Plus/Reciproc (AHRC); and AH Plus/Reciproc Blue (AHRB). Then, the samples were scanned under micro-CT after obturation and removal of the filling material. Two analyses were conducted. First, an evaluation was performed on all the axial images, and another analysis evaluated each millimeter of the 10 mm from the apex. Dentinal defects were observed in all the samples. All of the identified defects in the images after filling material removal were present in the corresponding images after obturation. The use of AH Plus and EndoSequence BC Sealer, and filling material removal using RC and RB instruments did not induce dentinal defects.

scholarly journals Apical Displacement and Residual Root Canal Filling with Single-Cone After Post Space Preparation: A Micro-CT Analysis

2020 ◽  
Vol 31 (1) ◽  
pp. 25-31
Author(s):  
Camila Maria Peres de Rosatto ◽  
Lilian Vieira Oliveira ◽  
Danilo Cassiano Ferraz ◽  
Priscilla Barbosa Ferreira Soares ◽  
Carlos José Soares ◽  
...  
Keyword(s):  
Root Canal ◽  
Filling Material ◽  
Micro Ct ◽  
Root Canal Filling ◽  
Root Canals ◽  
Single Cone ◽  
Before And After ◽  
Ct Analysis ◽  
Post Space ◽  
Apical Displacement

Abstract The purpose of this study was to evaluate the presence of residues after post space preparation (PSP) and establish whether the apical displacement of the gutta-percha was affected by the moments and methods of PSP in teeth filled by the single-cone technique. The root canals of 20 bovine incisor teeth were instrumented with Reciproc and filled with single-cone and AH Plus. The specimens were divided into 4 groups according to the moment and method of PSP (n=5): immediate with drill, immediate with thermoplasticizer, delayed with drill and delayed with thermoplasticizer. Micro-CT scans were performed before and after the PSP for residues of the root canal filling (1) and analysis of apical displacement (2). Data were analyzed by using 2-way repeated measurement ANOVA (1) and 2-way ANOVA (2) followed by the Tukey’s test (a=0.05). Significance effect on the residues percentage remaining for methods (p=0.044), for moments (p=0.006), for thirds repetition (p<0.001), and for interaction between methods and thirds (p<0.001), and moments and thirds (p=0.044). Significance effect on the apical displacement of root canal filing was detected for methods (p=0.008), however no difference was found between moments (p=0.617). In general, PSP using drill resulted in more homogeneous root canal preparation, mainly when made immediately. For all other combinations between methods and moments for PSP, the middle and apical thirds presented significant higher residues remaining. Thermo method performed in both moments and the drill method performed immediately had displacement in the apical direction, representing extrusion of the root filling material.

scholarly journals Comparative assessment of manual, rotary and reciprocating instruments for removal of root fillings, using stereomicroscope: An in vitro study

2019 ◽  
Vol 45 (1) ◽  
pp. 54-61
Author(s):  
Afzal Ali ◽  
Sazid Hussain ◽  
Sandeep Metgud ◽  
Shashank Mishra ◽  
Ankita Sharma ◽  
...  
Keyword(s):  
Root Canal ◽  
File Systems ◽  
In Vitro Study ◽  
Filling Material ◽  
Root Canal Filling ◽  
Root Canals ◽  
Tukey Test ◽  
Gutta Percha ◽  
Reciprocating Instruments

Background: To investigate the efficiency of Hedstrom (H; Dentsply Maillefer) file, Protaper Universal Retreatment system (PTUR; Dentsply Maillefer), Mani NRT-GPR files (Mani, Japan) and WaveOne (WO; Dentsply Maillefer) Reciprocating files in removing Gutta Percha (GP) and sealer from root canals. Methods: Sixty canals with less than 10° curvature from extracted human maxillary incisors were used. Root canal reinstrumentation was performed with H, PTUR, Mani NRT-GPR and WO files. Amount of residual root filling material (Gutta-percha and or sealer) were measured by using stereomicroscope. Data of GP or sealer remnants were statistically analyzed using one-way analysis of variance and Tukey test. Results: There were no significant differences among 4 groups in terms of residual root filling material in the apical third (p > 0.05). H-file group showed highest amount of root residual root filling as compared to groups. Conclusions: Reciprocating file system proved to be more efficient in removing the root canal fillings material than other retreatment file systems. H file group showed highest amount of root canal filling material. Bangladesh Med Res Counc Bull 2019; 45: 54-61

scholarly journals Evaluation of Three Ni-Ti Systems in Retreatment of Curved Root Canals Obturated by Gutta-Percha With iRoot SP

2021 ◽  
Author(s):  
Yi Chen ◽  
Weiping Tian ◽  
Lisha Wang ◽  
Fan Qi ◽  
Mengyu Sun ◽  
...  
Keyword(s):  
Root Canal ◽  
Filling Material ◽  
Micro Ct ◽  
Imaging Data ◽  
Root Canals ◽  
Filling Materials ◽  
Gutta Percha ◽  
Group I ◽  
Root Canal Retreatment ◽  
Curved Root Canals

Abstract Background To evaluate the retreatability of curved root canals obturated with gutta-percha (GP) and iRoot SP using three different Ni-Ti systems through micro-computed tomographic (micro-CT) analysis. Methods A total of 51 curved root canals of permanent molars with angles of curvature ranging from 20° to 40° were used. The root canals were prepared with the ProTaper Next (PTN) rotary system to size 25, .06 taper and filled with iRoot SP and GP using the single cone technique. Samples were randomly divided into three groups (n = 17 each) according to the retreatment system used: Group I. ProTaper Universal Retreatment (PTR) system + ProTaper Next system up to PTN X2; Group II. Waveone Gold (WOG) system (WOG25); Group III. Reciproc Blue (RB) system (RB25). The ability to regain apical patency, the volume of residual filling material, and dentinal microcrack were assessed using micro-CT imaging. Data were analyzed statistically using two-way analysis of variance and chi-square test with a significance level of 5%. Results There were no significant differences among the systems tested in the reestablishment of apical patency and reduction of filling materials (P > 0.05), but RB system exhibited better reestablishment root canal ability in the upper portion of curvature and the reduction of filling materials in the apical third (P < 0.05). Intergroup analysis indicated that PTR system induced significantly more dentinal microcracks than other two systems (P < 0.05). Conclusions All three tested Ni-Ti instruments showed the similar retreatability of curved root canals obturated with gutta-percha and iRoot SP. RB system may be more effective and safer in curved root canal retreatment.

scholarly journals Efficacy of Removing Thermafil and GuttaCore from Straight Root Canal Systems Using a Novel Non-Surgical Root Canal Re-Treatment System: A Micro-Computed Tomography Analysis

2021 ◽  
Vol 10 (6) ◽  
pp. 1266
Author(s):  
Vicente Faus-Llácer ◽  
Rubén Pérez ◽  
Ignacio Faus-Matoses ◽  
Celia Ruiz-Sánchez ◽  
Álvaro Zubizarreta-Macho ◽  
...  
Keyword(s):  
Root Canal ◽  
Treatment System ◽  
Filling Material ◽  
Micro Computed Tomography ◽  
Root Canal Filling ◽  
Filling Materials ◽  
Gutta Percha ◽  
Ct Analysis ◽  
Canal Systems ◽  
Ah Plus

The present study aims to evaluate the effectiveness of an XP-endo non-surgical root canal re-treatment system in removing both GuttaCore and Thermafil gutta-percha carrier-based root canal filling materials from straight root canal systems using micro-computed tomography (micro-CT) analysis. The study was performed on 20 single-rooted upper teeth, which were randomly allocated into the following study groups: Group A, Thermafil and AH Plus sealer (n = 10); Group B, GuttaCore and AH Plus sealer (n = 10). Before and after the non-surgical root canal re-treatment procedure, the samples were submitted for a micro-CT analysis. The volume of the root canal filling material (mm3), the volume of the remaining root canal filling material (mm3) and the time (minutes) needed to remove the root canal filling material were also recorded. Student’s t-test was used to analyze the results. No statistically significant differences were found between the volume of the remaining root canal filling material in the GuttaCore and Thermafil root canal filling systems at the coronal third (p = 0.782), middle third (p = 0.838) or apical third (p = 0.882) of the straight root canal systems; however, the GuttaCore required a statistically significant (p = 0.037) shorter amount of time (4.72 ± 0.76 min) to be removed than the Thermafil carrier-based root canal filling material (5.92 ± 1.42 min). The XP-endo Finisher non-surgical endodontic re-treatment system removes both GuttaCore and Thermafil gutta-percha carrier-based root canal filling materials from straight root canal systems, although removal of the GuttaCore gutta-percha carrier-based root canal filling material required less time.

scholarly journals Healing process of dog teeth after post space preparation and exposition of the filling material to the oral environment

2003 ◽  
Vol 14 (2) ◽  
pp. 103-108 ◽  
Author(s):  
Henrian Gonzaga Barbosa ◽  
Roberto Holland ◽  
Valdir de Souza ◽  
Eloi Dezan Júnior ◽  
Pedro Felício Estrada Bernabé ◽  
...  
Keyword(s):  
Root Canal ◽  
Healing Process ◽  
Filling Material ◽  
Root Canal Filling ◽  
Root Canals ◽  
Gutta Percha ◽  
Oral Environment ◽  
Chronic Inflammatory Reaction ◽  
Post Space ◽  
Better Than

The purpose of this study was to observe the influence of coronal leakage on the behavior of periapical tissues after root canal filling and post space preparation. Forty root canals of dogs' teeth were instrumented and filled by the lateral condensation technique with gutta percha points and the cements Sealer 26 and Roth. After post space preparation, the remaining filling material was either protected or not protected with a plug of the temporary cement Lumicon. After root canal exposition to the oral environment for 90 days, the animals were killed and specimens were removed and prepared for histomorphological analysis. The Brown and Brenn technique showed 70% of cases with microorganism leakage for Roth cement, and 20% with Sealer 26. When a plug of Lumicon was employed, there was 30% leakage for Roth cement and 0% for Sealer 26. A chronic inflammatory reaction was more frequently observed with Roth cement than with Sealer 26. It was concluded that a plug of Lumicon was efficient in controlling microorganism coronal leakage (p=0.05), and that Sealer 26 was more biocompatible and sealed root canals better than Roth sealer (p=0.01).

scholarly journals Periapical tissue healing after post space preparation with or without use of a protection plug and root canal exposure to the oral environment: study in dogs

2007 ◽  
Vol 18 (4) ◽  
pp. 281-288 ◽  
Author(s):  
Roberto Holland ◽  
Luciana Noronha Manne ◽  
Valdir de Souza ◽  
Sueli Satomi Murata ◽  
Eloi Dezan Júnior
Keyword(s):  
Root Canal ◽  
Filling Material ◽  
Root Canal Sealer ◽  
Root Canal Filling ◽  
Root Canals ◽  
Gutta Percha ◽  
Tissue Healing ◽  
Oral Environment ◽  
Environment Study ◽  
Post Space

The purpose of this study was to evaluate the influence of coronal leakage on the healing of dogs' periapical tissues after root canal filling, post space preparation and protection or not with a temporary sealer plug. Forty root canals of dogs' teeth were instrumented and filled by the lateral condensation technique with gutta-percha points and Endomethasone or CRCS sealers. After post space preparation, the remaining filling material was protected or not with a plug of temporary Coltosol sealer and exposed to the oral environment for 90 days. Thereafter, the animals were sacrificed and the specimens were removed and prepared for histomorphological and histobacteriological analysis. The findings revealed 35% of microbial leakage in the groups without plugs and 15% of leakage in the groups with plugs. Statistical analysis showed that the use of a Coltosol plug improved significantly the histomorphological results regardless of the type of root canal sealer (p=0.05) and that CRCS and Endomethasone sealers showed similar results (p>0.05).

scholarly journals Effectiveness of different rotary file systems in removing the root canal filling material: A micro-computed tomography study

2021 ◽  
Vol 15 (4) ◽  
pp. 273-278
Author(s):  
Esin Özlek ◽  
Hüseyin Gündüz
Keyword(s):  
Computed Tomography ◽  
Root Canal ◽  
File System ◽  
File Systems ◽  
Filling Material ◽  
Micro Ct ◽  
Micro Computed Tomography ◽  
Root Canal Filling ◽  
Root Canals ◽  
Time Required

Background. This study aimed to examine the retreatment efficiency of four NiTi rotary file systems with micro-computed tomography (micro-CT). Methods. Forty premolar teeth were shaped up to F2 using the ProTaper Universal rotary file system and obturated with MTA Fillapex. The root canals were scanned with micro-CT to evaluate the volume of root canal filling before retreatment. The samples were randomly divided into four groups according to the file system used to remove root canal filling material (n=10): ProTaper Universal Retreatment, ProTaper NEXT, EdgeFile XR, and EdgeFile® X3 NiTi system. All the samples were scanned with a micro-CT device for the second time to evaluate the amount of residual filling material in the root canals. The percentages of filling material removed from root canals were calculated. Additionally, the time spent on the removal of the root canal filling material was recorded. The data were analyzed using the Shapiro-Wilk and Kruskal-Wallis tests. Results. There were no significant differences between the groups in the percentage of root canal filling material removal. However, a statistically significant difference was found between the groups in the time required to reach the apex and remove the entire filling material. The time required to remove the root canal filling material was higher in the EdgeFile® X3 group. Conclusion. NiTi files manufactured for root canal preparation can be used effectively and safely to remove root canal filling materials. EdgeFile XR produced for retreatment can be used as an alternative to ProTaper Universal Retreatment files.

scholarly journals 3D Analysis of D-RaCe and Self-Adjusting File in Removing Filling Materials from Curved Root Canals Instrumented and Filled with Different Techniques

2014 ◽  
Vol 2014 ◽  
pp. 1-7 ◽  
Author(s):  
Neslihan Simsek ◽  
Fuat Ahmetoglu ◽  
Ali Keles ◽  
Elcin Tekin Bulut ◽  
Kursat Er
Keyword(s):  
Ct Scans ◽  
3D Analysis ◽  
Filling Material ◽  
Micro Ct ◽  
Root Canal Filling ◽  
Root Canals ◽  
Filling Materials ◽  
Gutta Percha ◽  
Ah Plus ◽  
Curved Root Canals

The aim of this study was to compare the efficacy of D-RaCe files and a self-adjusting file (SAF) system in removing filling material from curved root canals instrumented and filled with different techniques by using microcomputed tomography (micro-CT). The mesial roots of 20 extracted mandibular first molars were used. Root canals (mesiobuccal and mesiolingual) were instrumented with SAF or Revo-S. The canals were then filled with gutta-percha and AH Plus sealer using cold lateral compaction or thermoplasticized injectable techniques. The root fillings were first removed with D-RaCe (Step 1), followed by Step 2, in which a SAF system was used to remove the residual fillings in all groups. Micro-CT scans were used to measure the volume of residual filling after root canal filling, reinstrumentation with D-RaCe (Step 1), and reinstrumentation with SAF (Step 2). Data were analyzed using Wilcoxon and Kruskal-Wallis tests. There were no statistically significant differences between filling techniques in the canals instrumented with SAF (P=0.292) and Revo-S (P=0.306). The amount of remaining filling material was similar in all groups (P=0.363); all of the instrumentation techniques left filling residue inside the canals. However, the additional use of SAF was more effective than using D-RaCe alone.

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