Removal Of Root Research Articles

Crustal bobbing in response to lithospheric foundering recorded by detrital proxy records from the central Andean Plateau

Lithospheric foundering is an important mechanism of crustal deformation and recycling, basin subsidence, and surface uplift in orogenic systems. The Arizaro Basin, in the Puna region of NW Argentina, is a place where foundering was proposed to have taken place during the late Miocene. The Arizaro Basin has been described as a “bobber” basin produced by Miocene lithospheric foundering. The geometry, sedimentology, deformation, and paleoelevation history of the Arizaro Basin and surrounding arc suggest dynamic processes associated with lithospheric removal. Although analogue and numerical models support this hypothesis, the history of crustal thickness in response to lithospheric removal remains unconstrained. Here, we used a novel approach exploiting the geochemistry of detrital zircons from volcanic ashes intercalated within the Arizaro Basin stratigraphy to reconstruct the paleocrustal thickness of the neighboring magmatic sources throughout the Cenozoic. Our data indicate that the sources of volcanism for the Arizaro Basin were characterized by relatively thick crust (∼53 km) since ca. 36 Ma. Thickening between ca. 20 and 13 Ma and thinning after ca. 13 Ma are consistent with formation and subsequent removal of a crustal root under the nearby arc and Aguas Calientes caldera.

Measuring outcomes when odontogenic sinusitis is treated with endoscopic sinus surgery: A systematic review

AbstractAimTo determine outcome measurement when odontogenic sinusitis (ODS) is treated by Endoscopic Sinus Surgery (ESS).Materials and MethodsA PRISMA compliant systematic review using MeSH headings on Pubmed, Ovid and Embase. Inclusion criteria: Adults with odontogenic maxillary sinus disease undergoing ESS. Exclusion criteria: Adolescents, odontogenic disease related to; trauma, neoplasia, tumour resection, palatal cleft or fungal infection, previous sinus surgery, endoscopic surgery not involving the middle meatus.ResultsA total of 1462 papers were identified, 68 eligible for review. No randomised controlled trials were identified. Twenty‐three papers (34%) reported a successful outcome as no disease at endoscopy and reduced sinonasal symptoms; 14 papers (21%) based outcomes on endoscopy, reduced symptoms and resolution of sinus opacification or reduced mucosal thickness; 1 paper established success on reduced symptoms only and 7 papers (10%) based outcomes on radiographic findings only. Other primary measures of success were excision and closure of oro‐antral fistula, 6 (9%), removal of odontogenic cysts, 5 (7%), removal of displaced dental implants, 4 (6%), removal of displaced root of tooth, 3 (4%). Five papers (7%) reported no outcome measure. Additional measures of outcome were; retention of dental implants perforating the sinus floor, survival of sinus floor grafting with subsequent implant placement and retention of teeth with persistent apical periodontitis.ConclusionReported outcome measures were very heterogeneous. In consideration of the weak evidence base for the role of ESS in ODS management, more consistent measurement and reporting of patient symptoms, clinical and radiological signs with endoscopic findings is recommended to enable meta‐analysis.

The success rates and outcomes of mandibular third molar coronectomy: 167 cases

PurposeThe purpose of this study was to assess success rates and to report complications of coronectomy of mandibular third molars (M3M), including intra-operative failure, pain, infection, dry socket, inferior dental alveolar (IAN) and lingual nerve (LN) injuries and re-operation rates.MethodsRetrospective analysis of 167 coronectomies completed between January 2017 to December 2022 was undertaken.ResultsThe success of coronectomy was 93%. Intra-operative failure was reported to be 3.6% (n = 8). Complications accounted for pain (15%, n = 24), infection (9%, n = 15) and dry socket (3.6%, n = 6). Three patients required removal of M3M root at 3 months (n = 2) and 24 months (n = 1), accounting for 1.8% re-operation rate. A total of number of patients who suffered a nerve injury was 12; three of these were permanent (LN – 1.2%, n = 2; IAN – 0.6%, n = 1), nine were temporary (IAN – 1.2%; n = 2, LN – 2.4%; n = 4; site not specified – 1.8%, n = 3). No patients with intra-operative failure and re-operation suffered IAN or LN injury post-operatively.ConclusionCoronectomy offers a successful strategy for management of high risk M3M. The treatment outcomes can be improved with careful case selection and adjusting surgical technique, including assessment of root morphology, incomplete crown sectioning technique and avoidance of lingual retraction. Reporting of coronectomy success as a factor of surgical outcome, presence or absence of permanent IAN injury, persistent symptoms or any other long-standing complications (such as LN injury), and the need for re-operation accounting for root migration status may be a useful tool to measure coronectomy outcomes.

Comparative Evaluation of the Efficacy of ProTaper & Mtwo Rotary Retreatment System and Conventional Hand H-files for Removal of Gutta-percha from Root Canal - A Stereomicroscopic Study.

Root canal retreatment aims to eliminate or substantially reduce the microbial load from the root canal and removal of previous root filling materials is the primary goal of nonsurgical retreatment. To comparatively evaluate the effectiveness of ProTaper retreatment files, Mtwo retreatment files, and Hedstrom files along with Gates Glidden (GG) Drill by using a stereomicroscope for the detection of remaining gutta-percha after root canal retreatment using a stereomicroscope. Forty-five test samples were divided into three experimental groups (15 samples each), such as Group A-ProTaper retreatment files; Group B-Mtwo retreatment files; Group C-Hedstrom files along with Gates Glidden Drill. After routine endodontic treatment in the test samples, gutta-percha was removed from the test samples as per the division of different retreatment file systems. Further, test samples were divided longitudinally and were evaluated under the stereomicroscope. Stereomicroscopic images were captured and analysed under Image Analyser Software-Image J. One-way ANOVA test was used for comparison of gutta-percha removal between the groups and Tukey's post hoc test was used for pairwise comparisons. The least remaining filling material was seen in specimens retreated with the ProTaper universal system. The highest remaining filling material was seen in specimens retreated with Hedstrom file with Gates Glidden Drill. All experimental test techniques left gutta-percha remnants within the root canal. ProTaper universal rotary retreatment system proved to be an efficient method of removing gutta-percha and left relatively less volume in comparison with other test systems.

Root resection of multirooted teeth with premolarization of mandibular molar for successful oral rehabilitation

Abstract Root resection procedures are indicated in the treatment of periodontal furcation involvement and root fractures in one of the roots of multirooted teeth. Their long-term prognosis is comparable to that of implants. The present article is a case report of root separation and removal of the mesial root along with crown in mandibular first molar which was successfully employed as a part of the oral rehabilitation procedure.

THE ROLE OF JALAUKAVACHARAN IN VIPADIKA - A SINGLE CASE STUDY

In Ayurveda, all skin ailments fall under the category of kushta(Psoroasis). According to Acharya Charaka, Vipadika is one of the forms of Kshudrakushtha that mostly comprises Vata-Kapha dosha. Sphutanam (fissures) in the palms, soles, or both, are present, along with Teevra vedana (intense pain). In the present case, a 41-year-old female patient was treated with Jalaukavacharana and shaman chikitsa after suffering from cracks in the palm, dryness, and blackish discoloration for 6 months. Jalaukavacharana aids in the removal of the disease's root cause and the prevention of recurrence.

A tale of an orbicule in the eastern Gangdese belt of southern Tibet: Petrographic, geochemical, and submagmatic structural perspectives on its formation

Owing to their intriguing appearance and unusual occurrence, as well as their significance in addressing magmatic processes, orbicules have attracted attention from geologists all over the world. We discovered an orbicule-bearing boulder in the Linzhi region, near the Eastern Himalayan Syntaxis, which is the first report of orbicules in the Gangdese magmatic belt, southern Tibet. The orbicules are composed of dioritic shells around monzodioritic cores, in a dioritic matrix. They typically have a single shell, composed of elongate and radially oriented hornblendes, with interstitial plagioclase. Zircon laser ablation−inductively coupled plasma−mass spectrometry U-Pb dating yields an indistinguishable age of ca. 28.8 Ma for both the orbicule core and matrix, indicating approximately coeval crystallization. Zircon Lu-Hf and whole-rock Sr-Nd isotopes reveal that the original magmas of both the orbicule matrix and orbicule core were relatively juvenile (ƐHf(t) = +2.2 to +6.0 for matrix and +1.2 to +3.9 for core; ƐNd(t) = −1.68 to −1.46 for matrix and −3.65 to −2.52 for core), similar to reported Oligocene−Miocene post-collisional adakites in the Gangdese belt. Zircon and hornblende geochemistry reveals that both the orbicule matrix and cores were generated from highly oxidized, high oxygen fugacity magmas. Hornblende composition further indicates that the original magmas of the matrix and the orbicule cores were water-rich, with H2O contents greater than 4 wt%. In combination with the whole-rock geochemistry, these results suggest that the orbicules were formed in a post-collisional setting, from magma generated by partial melting of the juvenile thickened lower crust of the Lhasa terrane triggered by convective removal of the Lhasa lithospheric root. The preferred orientation of euhedral igneous minerals in the matrix and the alignment and compaction of orbicules define a magmatic to submagmatic foliation. This, together with the subsolidus deformation microstructures exhibited by minerals within the orbicules, indicates that some flow or movement of orbicules took place under magmatic to submagmatic conditions, as the subsolidus plastic orbicules were jostled and transported within a hypersolidus liquid magma.

Rotary Systems for Root Canal Gutta-percha Removal: A Review

Gaining a predictable outcome in endodontics is complicated by handling an endodontically treated. Compared to primary root canal therapy, non-surgical endodontic retreatment typically entails the removal of previous root filling materials. This process may be necessary to enable access to contaminated canal space for recleaning and to remove obturation materials that may have been contaminated by marginal penetration of microorganisms and microbial toxins. The achievement of patency at the canal terminus and the extension of cleaning as close as possible to the apical terminus have been identified as healing prognostic criteria. Gutta-percha (GP) is the current mainstay material utilised as an endodontic filling material, capable of performing comprehensive, three-dimensional sealing of the treated root canal system in a highly effective manner with considerable physical durability. Interestingly, since its initial discovery in the 17th century, GP remains to this day the ideal obturation material used across, in essence, all dental clinics globally due to its material properties and versatility for use in conjunction with sealer compounds. The development of GP removal systems that can manage to remove GP in its entirety from root canals during non-surgical retreatment procedures is currently highly desirable for dental practices. This literature review investigated this current research niche and scrutinised two prevalently utilised rotary systems – Edgefile-XR and the XP-Endo shaper systems.

Lithospheric dripping in a soft collision zone: Insights from late Paleozoic magmatism suites of the eastern Central Asian Orogenic Belt

The closure of Paleo-Asian Ocean is considered to have occurred along the Solonker Suture in the southernmost segment of the Central Asian Orogenic Belt (CAOB), the largest Phanerozoic accretionary orogen on the globe. The suture branches to the east to form the northern Hegenshan–Heihe Suture and the southern Solonker–Changchun Suture. The Hegenshan–Heihe Suture is an ideal natural laboratory for studying the post-collisional geodynamic processes operating in a soft collision zone driven by divergent double-sided subduction. Here we report results from an integrated study of the petrology, geochronology, geochemistry, and Sr–Nd–Hf isotopic compositions of the Early Carboniferous–Early Permian magmatic suite in the Hailar Basin of the Xing’an–Erguna Block. The Early Carboniferous igneous rocks are represented by 356–349 Ma andesitic tuffs, exhibiting typical subduction-related features, such as enrichment in large-ion lithophile elements and depletion in high-field-strength elements. These features, together with the relatively depleted Sr–Nd–Hf isotopic compositions, constant Nb/Y values, but highly variable Rb/Y and Ba values indicate that these rocks were generated by partial melting of a depleted mantle wedge metasomatized by slab-derived fluids. The Late Carboniferous–Early Permian magmatic suite (317–295 Ma) is characterized by high Sr contents (313–1080 ppm) and low Y contents (5–13 ppm), and these can be subdivided into calc-alkaline adakitic rocks and high-K calc-alkaline adakitic rocks. The calc-alkaline adakitic rocks have higher values of Sr/Y, (Sm/Yb)source normalized, and Mg#, and lower values of Y, Ybsource normalized, and K2O/Na2O than the high-K calc-alkaline adakitic rocks, which suggests that the former was generated by partial melting of foundered lower continental crust and the latter by partial melting of normal lower continental crust. Based on our new data, in conjunction with those in previous studies, we conclude that the tectonic evolution of the Hegenshan–Heihe Suture involved Early Carboniferous double-sided subduction of the Nenjiang Ocean, latest Early Carboniferous soft collision between the Xing’an–Erguna and Songliao blocks, and Late Carboniferous–Early Permian post-collisional extension. We also propose a new geodynamic scenario in which removal of the lithospheric root might have occurred in a soft collision zone during the post-collision period via repeated and localized lithospheric dripping, which results from combinedeffects of hydration weakening of the lithosphere caused by pre-collision subduction and asthenospheric stirring triggered by slab break-off.

Hemisection as an Alternative Treatment for Mandibular Molars with Separated Instrument: A Case Report

Hemisection is a procedure involving the removal of an untreatable root with an accompanied crown portion while saving the other healthy root with adequate bone support. This case report represents the treatment of 2nd mandibular molar with irretrievable and unable to bypass separated instruments in the mesiobuccal canal of the mesial root. After sectioning the tooth, mesial root with the crown portion was extracted, and the remaining part of the tooth was restored as a premolar. Restorative rehabilitation was done by cementing a three-unit metal ceramic bridge. The good outcomes of endodontic treatment and patient demand towards the conservation of tooth encouraged the procedure of hemisection. For the preservation of terminal mandibular molars with irretrievable and unable to bypass separated instruments, hemisection can be considered as an alternative treatment option our objective is to conserve terminal mandibular molar with adequate bone support as a replacement in this area is complex, time consuming, and costly.

The Efficacy of Two Novel Retreatment Systems in the Removal of Root Canal Obturating Materials (An In vitro Study)

BACKGROUND: The complete removal of root filling material is one of the main goals of non-surgical endodontic retreatment. Thus, the development of new techniques and instruments aiming to promote this task presents clinical significance. AIM: The purpose of the study was to assess the amount of residual root canal filling materials (gutta-percha/sealer) after using two different endodontic retreatment systems and ultrasonic tip. METHODS: Forty-five mandibular premolar teeth were mechanically instrumented and obturated. Retreatment was performed using two different Endostar RE (Group 2), Rogin retreatment system (Group 3), and ultrasonic tip (Group 1). Roots were separated buccolingually into two halves. A digital camera connected to the stereomicroscope captured images to each half. Image-J software was used to evaluate and measure the areas with remaining filling material in each third (cervical, middle, and apical). RESULTS: Data analysis revealed significant differences between the groups in the coronal, middle, and apical thirds (p < 0.05). The ultrasonic retreatment tips (G1) were significantly more efficient in removing the gutta-percha and sealers compared to the Rogin (G3) and Endostar (G2) retreatment endodontic kits. CONCLUSIONS: All the file systems left some filling material in the canals. Ultrasonic retreatment tip had maximum efficacy for the removal of filling materials in comparison with the retreatment file systems under investigation.

The effectiveness of reciprocating instruments in the removal of root filling materials: A systematic review

Introduction: Re-establishing the health of the periapical tissues is considered to be the main objective of nonsurgical root canal retreatment in cases with posttreatment disease. Removal of filling material from the canal space is the most difficult and challenging step during retreatment, regardless of the technique/instrument used. The aim of this study was to determine the effectiveness of nickel–titanium reciprocating instruments in the removal of root canal filling material in comparison with continuous rotary shaping and retreatment instruments.Materials and Methods: Four electronic databases were used (PubMed, Google Scholar, ScienceDirect, and Scopus) as information sources. Articles describing in vitro studies carried out on extracted human teeth were included in this systematic review, while narrative, systematic review, in vivo studies, animal studies, studies published in languages other than English, and studies that used methods other than micro-computed tomography to detect root filling material were excluded from this systematic review. The studies were assessed for eligibility according to inclusion criteria by two independent reviewers; the opinion of the third reviewer was requested when one of the reviewers did not accept the study to be included.Results: Forty-one studies of 560 titles and abstracts screened were selected for full-text analysis; 26 studies were excluded, and 15 studies were included in this systematic review. Eleven studies (73%) showed a nonsignificant difference between reciprocating and rotary instruments.Conclusions: The collected studies showed no effect of motion (either reciprocation or full rotary motion) on the remnant of root canal filling materials.

XP Endo Finisher-R and PUI as supplementary methods to remove root filling materials from curved canals.

This study assessed the ability of XP-endo Finisher R (FKG, La Chaux-de-Fonds, Switzerland) to remove filling remnants from curved mesiobuccal canals of maxillary molars, using the passive ultrasonic irrigation (PUI) technique as a comparison. Twenty-four curved main mesiobuccal canals (MB1) of maxillary molars were instrumented with Wave One (#25/07) and filled with gutta-percha points and AH Plus Sealer. Samples were then re-treated with a standardized protocol with Wave One (#35/06) as the master apical file. Micro-CT scans measured baseline volume of remaining filling material (in mm3). Samples were divided into two groups (n = 12) according to the supplementary cleaning approach: (PUI) or XP-endo Finisher R. Statistics compared baseline and final volume of filling material (within-group); and the percentage of filling material reduction (between-group). Mean baseline volumes, final volumes, and percentages of reduction (%) of filling material for XP-endo Finisher R and PUI were respectively: 0.060 mm3, 0.042 mm3, and 31.28%; and 0.064 mm3, 0.054 mm3, and 16.57%. Both tested protocols reduced the amount of filling material (p < 0.05). XP-endo Finisher R had higher percentage of reduction as compared to PUI (p < 0.05). XP-endo Finisher R and PUI used as supplementary cleaning protocols during re-treatment improved the removal of root filling material in curved canals; but XP-endo Finisher R was approximately twice more efficient. The complete filling material removal during re-treatment procedures is still a challenge. Supplementary cleaning protocols may help to remove the remaining material after the complete mechanical preparation of curved canals. XP-endo Finisher R was approximately twice more efficient than PUI.

Hemisection- A Saviour for Periodontally &amp; Cariously Involved Permanent Mandibular Molar

Progressive carious and inflammatory involvement of teeth if left untreated will ultimately lead the loss of tooth structure in the oral cavity. Earlier clinician was left with no option but extraction of such hopeless teeth followed by replacement with fixed partial denture, removable partial denture or implants. Hemisection is a removal of compromised root and the associated crown portion. It is one of the treatment options for preserving remaining part of molar having sound periodontium. This case report presents a patient in which distal half of the teeth was carious but with sound periodontium and the periodontally compromised mesial root was resected, and after healing, fixed dental prosthesis was delivered to restore proper form and function

Hemisection with crown splinter in perforation mesial canal wall first molar mandible: a case report

Background: Untreated progressive inflammatory periodontal disease can affect attachment loss until bifurcation or trifurcation of multirooted teeth. Hemisection in multirooted is removal of compromised root preserve the good one then restorative coronal part with a fixed prosthesis. It is the treatment option for preserving the remaining part of healthy root who having sound periodontium. The study aimed to describe a case of a hemisection is presented for a tooth where only the mesial root of a mandibular molar was affected.Case presentation: a 22 years old female comes to RSGM Prof. Soedomo with moderate pain and gum swelling. Perforation in mesial root canal wall in the objective examination. In radiograph, there were radiolucent in mesial root, bifurcation and fracture instrument left in mesial apical root canal. The conditions that can't approach in non-surgical treatment such as fracture instrument, severe vertical bone loss, caries, internal or external resorption in furcation or one root, and furcation lesion, can be treated with surgical approach hemisection as alternative before axtraction teeth. Hemisection treatment includes root canal treatment of the remaining roots, intracanal retention with fiber post then restorative the coronal part use restorative material and splinting with the adjacent tooth to decrease the risk of displacement. Fixed prosthodontic prosthesis to maintain the occlusal balance.Conclusion: hemisection is a feasible treatment option because more practical and conservative for periodontal-endodontic lesions rather than extraction teeth.

Hemisection - A Case Report

Hemisection denotes removal or separation of root with its accompanying crown portion of mandibular molars. It is one of the treatment options for preserving the remaining part of the molar having sound periodontium. Careful case selection is necessary for long-term success. The present case report demonstrates the successful management of hemisection of 36 with a fixed partial denture. Key Words: Fixed partial denture, Furcation involvement, Hemisection, Root resection

Critical analysis of research methods and experimental models to study removal of root filling materials.

Despite enjoying high favourable outcome rates, root canal treatment is not always successful. Root canal retreatment is a widely practised option for managing a non-healing root treated tooth. A basic distinction between retreatment and initial treatment is the requirement to remove the existing root filling material occupying the root canal space. Only then, can the technical deficiencies and possible causes of failure be addressed. Hence, the successful removal of the root filling material is critical to achieving the objectives of retreatment. Many different materials and techniques have been used for root canal filling, which have been documented in a plethora of studies; these are mainly laboratory studies investigating the removal of root filling materials. To help guide future research, which may then better inform clinical practice in relation to retreatment procedures, the focus of this narrative review is on the research methods and experimental models employed to study the removal of root filling materials. The current available literature demonstrates great variation in the research methodologies used to study the removal of root filling material, including direct visualization by splitting tooth samples or clearing, three-dimensional radiographic imaging including using microcomputed tomography or cone-beam computed tomography, and a combination of these techniques. Depending on the research method employed, variation also exists in quantification of root filling material removal; these include measurements of surface area, volume or weight, and criteria-based (semi-quantitative) assessment. Experimental models, using human teeth or resin models, differ with respect to standardization techniques and replication of the clinical scenario including initial sample preparation, canal filling, allocation and technical aspects of retreatment procedures. Future models should replicate, as closely as possible, the clinical scenario. Currently, microcomputed tomography provides a highly detailed, non-invasive and non-destructive method of objectively assessing and quantifying root filling removal.

Retreatment of Experimental Carrier-Based Obturators with the Remover NiTi Instrument: Evaluation of Apical Extrusion and Effects of New Kinematics.

The objective of this study is to evaluate the retreatment time and weight of apically extruded debris yielded by two different kinematics during the removal of different root canal filling materials. Forty straight single-rooted extracted teeth were instrumented with HyFlex CM files and obturated with two different techniques: 25.04 HyFlex experimental carrier-based obturators (Coltène/Whaledent, Altstätten, Switzerland) (group 1) or 25.04 single gutta-percha cones (Roeko Coltène/Whaledent, Altstätten, Switzerland) (group 2) and Guttaflow Bioseal as the sealer. Samples were divided into four subgroups (n = 10) according to the used kinematics for the removal of root canal filling materials: continuous rotation (A) or retreatment motion (B) with a Remover and HyFlex EDM Nickel-Titanium instruments activated with a CanalPro Jeni micromotor (Coltène/Whaledent, Altstätten, Switzerland). Time for retreatment was digitally recorded, and debris extruded from the apex was collected in Eppendorf tubes and weighted with an analytical balance. Data on retreatment time and apical extrusion were statistically analyzed with the Kruskal–Wallis test (p < 0.05). Working length was achieved in all the retreated samples. The removal of root filling material resulted significantly faster with the Jeni mode (p < 0.001), and the difference was significant for the removal of both filling materials (p < 0.05). No significant differences on debris extrusion between single cone and experimental obturators groups were noted (p > 0.05), and no significant differences between kinematics (continuous rotation vs. Jeni motion) were observed (p > 0.05). All the tested retreatment strategies lead to an extrusion of material from the apex, and the weight of apically extruded debris was similar. The use of the innovative CanalPro Jeni kinematics accelerates the time for the removal of root filling materials.

Relict root left in the mandible after extraction of the teeth 35 as a causative agent of the inflammation process in the region of mental foramen of the mandible

We present a case of iatrogenic complication after extraction of the teeth 35 in 63-years old women. There was a root of the teeth left in the bone. It was a causative agent of pain sensations and inflammation of the surrounding tissues. Due to the close distance between the root, mandible canal and mental foramen of mandible the removal of relict root was burden with high risk of parasthesis.

Supplementary solvent irrigation efficacy on filling remnants removal comparing XP-endo Finisher R vs IrriSafe

This study aimed to compare the efficacy of XP-endo Finisher R and IrriSafe, with a solvent mixture of Methyl ethyl ketone/Tetrachloroethylene (MEK/TCE), in the removal of root filling residues. Twenty-four human mandibular incisors were pair-matched by micro-computed tomography according to volume and aspect ratio. After retreatment, specimens were allocated to two experimental groups (n = 12), according to the supplementary instrument used. The volume of residual filling material after each irrigating step and the time for retreatment was calculated. Statistical analyses were carried out using Mann–Whitney test, with a significance level of 5%. The volume of initial root canal filling material between the groups was similar (p > 0.05). With the final irrigation protocol (NaOCl and EDTA) the volume of the filling remnants decreased significantly (p < 0.05) with no differences between IrriSafe or XP-endo Finisher R (p > 0.05). The additional solvent mixture MEK/TCE increased the efficiency of filling materials reduction, regardless of the agitating instruments employed, IrriSafe or XP-endo Finisher R (p < 0.05). There was no difference between the two groups regarding the time (p = 0.149). Both supplementary instruments were effective in the reduction of filling remnants. The additional step with a solvent mixture of MEK/TCE enabled a total recovery of patency and the achievement of cleaner canals, independently of the agitation instrument.