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In root canal treatment, regardless of instrumentation technique, the presence of smear layer covering contaminated dentin walls is always a concern. Therefore, irrigation plays an important role in reducing the bacterial load, and to improve the effectiveness of irrigation, different irrigation techniques and equipment have emerged that allow improving the prognosis of endodontic treatment. Literature review research was carried out, which investigated the current equipment that could help obtain better removal of the smear layer from the root canal during endodontic treatment. To do this, an electronic search was carried out in Wiley, Research 4 Life, Elsevier and Springer using a combination of the terms "smear layer", "irrigation techniques", and "agitation in endodontics". Resulting in a total of 63 articles, without language restriction, with certain inclusion criteria, making evident the lack of clinical studies that evaluate the smear layer in certain activation equipment. Among the equipment were: EndoActivator (EA), Vibringe (VB), EndoVac (EV), EDDY (ED), Sonic MM 1500 MicroMega, RinsEndo System (RE), EasyClean (EC), GentleWave (GW) Canal CleanMax (CCM), EQ-S and EndoUltra (EU). And when analyzing the effectiveness of each device in relation to smear layer, no device has been shown to completely eliminate the smear layer from the apical region of the root canal system, regardless of the chemomechanical preparation technique performed, the success It depends a lot on the irrigation protocol carried out, as well as an adequate pre-endodontic restoration that will improve the prognosis of the treatment, according to the researched literature. [ABSTRACT FROM AUTHOR]

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Copyright of Revista Foco (Interdisciplinary Studies Journal) is the property of Revista Foco and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Universidad Médica Pinareña is the property of Editorial Ciencias Medicas and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revista de Odontopediatría Latinoamericana is the property of Asociacion Latinoamericana de Odontopediatria and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revista Usta Salud is the property of Revista UstaSalud de la Division de Ciencias de la Salud de la Universidad Santo Tomas and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The high need for root canal treatments in different dental groups continues to be a challenge for professionals; since, it is necessary the knowledge of the techniques, materials, equipment and instruments, as well as of the anatomical variants on which the success or failure depends. Anatomical variations include the presence of a second root canal in lower incisors (SCRII). The present investigation is of a literature review type, articles of the type were included: literature review and descriptive studies, papers in English and Spanish were included; the search was carried out between the months of January and July 2021, in the following databases: Hinari, EBSCO host, Pubmed. The results indicate that the incidence of finding two canals in both lower incisors range from 2% to 77.9%; individually in lower central incisors the prevalence is from 11.90% to 32.50% and in lower lateral incisors, it is found between 17.50% and 58% of cases. The location of the SCRII entrance has been the subject of multiple studies, finding that there is no consensus on this point; since similar percentages have been described among the different thirds (cervical, middle and apical), an influencing factor could be ethnicity. Cone beam computed tomography has gained ground over conventional radiography and the use of magnification as the most effective diagnostic technique; however, it is suggested to carry out a study with Salvadoran patients to obtain a value that guides professionals and thus avoid endodontic treatment failures in said teeth. [ABSTRACT FROM AUTHOR]

Copyright of Revista de la Asociación Odontológica Argentina is the property of Asociacion Odontologica Argentina and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revista de la Asociación Odontológica Argentina is the property of Asociacion Odontologica Argentina and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of CES Odontología is the property of Universidad CES and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revista de la Academia Mexicana de Odontología Pediátrica (2594-1798) is the property of Academia Mexicana de Odontologia Pediatrica, A. C. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Salud Uninorte is the property of Fundacion Universidad del Norte and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Serbian Dental Journal / Stomatološki Glasnik Srbije is the property of National Library of Serbia and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Background: Radiographic examination in upper molars is often deficient in order to diagnose abnormalities in the root canal system and to be able to choose the ideal treatment. Description of the case: This article shows the clinical case of a second right upper molar with symptomatic irreversible pulpitis. An accessory root on the palatal is observed in a radiographic examination. A therapy of the canal was carried out with ProtaperNext ® and the sealing was made by cold lateral condensation with ultrasonic condensation. Conclusión: It is very important to know the root canal system morphology of the tooth to be treated in order to offer the patient an adequate treatment. [ABSTRACT FROM AUTHOR]

Introduction: The radiographic control of the root canal treatment can evaluate the healing of the periapical lesions. The objective of this study was to determinate the characteristics of the radiographic healing that was observed after one year, during follow-up sessions; so, the healing of the lesions according to the periapical pathology at the beginning of the treatment and the causes of failure of the endodontic treatments were recorded. Method: This is a prospective, observational, descriptive and longitudinal study, carried out in patients who attended control one year after endodontic treatment through the Periapical Index (PAI). Results: A total of 395 teeth of patients who underwent endodontic treatment one year prior to data collection, 87 presented radiogaphically observable periapical lesions; of these, 40 (45.97%) attended the control at one year. The frequency of cases in which some degree of radiographic healing was observed one year after treatment was 97.46%. The pathology with more cases of complete healing was periodontitis with sinus tract. In general, 84.61% of the cases decreased two levels in their PAI after one year. The 100% of the cases of failure presented vertical root fractures. Conclusion: The frequency of periapical healing after endodontic treatment is high. The main cause for the failure of the treatments documented in this study was the lack of coronal restoration that caused vertical fractures. [ABSTRACT FROM AUTHOR]

Copyright of Revista ADM is the property of Asociacion Dental Mexicana and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of CES Odontología is the property of Universidad CES and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revista Odontología Vital is the property of Universidad Latina de Costa Rica and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The article presents two clinical cases related to dental treatments. The first case is about a 41-year-old female patient who received internal bleaching after root canal treatment on tooth 11. The bleaching was performed with 35% hydrogen peroxide and satisfactory results were obtained. The second case refers to a 34-year-old male patient with hydrocephalus, developmental disability, and congenital heart disease, who required a complete denture due to the loss of all his teeth. A mucosa-supported prosthesis was made with a specific occlusal scheme to improve the function and aesthetics of the patient. [Extracted from the article]

The article presents two clinical cases related to dental treatments. The first case is about a 41-year-old female patient who received an internal bleaching with 35% hydrogen peroxide to treat discoloration in tooth 11 after a root canal treatment. The second case is about a 34-year-old male patient with hydrocephalus, developmental disability, and congenital heart disease, who required a total mucosupported prosthesis to restore masticatory function and aesthetics. Both cases highlight the importance of considering the systemic and anatomical conditions of patients in dental treatment. [Extracted from the article]

Copyright of Odontología Pediátrica is the property of Asociacion Sociedad Peruana de Odontopediatria and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Background: The root canal filling technique named Hybrid-Mixed Condensation, combines the advantages of cold lateral and warm vertical condensation. The ability of avoiding microbial microleakage has not been proven. Purpose: To evaluate the differences of microbial microleakage using Enterococcus faecalis, in canals obturated with five different techniques: lateral, warm vertical, WaveOne® single cone, Guttacore®, and Hybrid-mixed condensation. Methods: 50 single-rooted human premolars extracted for orthodontic reasons were biomechanical prepared with primary file of WaveOne® system. Teeth were divided into 5 groups using different obturation techniques: single cone with WaveOne® Primary, lateral condensation using 2% gutta-percha cones, Guttacore® 30, warm vertical condensation using down packing in a WaveOne® Primary cone and backfill with alpha gutapercha of Beefill®, and the hybrid mixed condensation modifying the lateral condensation with heat and a backfill using Beefill®. Enterococcus faecalis was inoculated in the coronal third and apices were immersed in brain heart infusion broth with phenol red incubated at 37 °C for 12 weeks. Microfiltration was determined with color change and turbidity of the medium. Specimens were observed by scanning electron microscopy. Results: Only 11 teeth (22%) were positive for leakage. 46% with single cone, 30% with Guttacore®, 20% with lateral condensation, 10% with warm vertical condensation and no microleakage was found for Hybrid-Mixed Technique over the period of 12 weeks of study. Conclusion: Hybrid Mixed Technique showed to be the most efficient technique to get three-dimensional seal and prevent microbial contamination of canals in the endodontic therapy. [ABSTRACT FROM AUTHOR]

Copyright of CES Odontología is the property of Universidad CES and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revista ADM is the property of Asociacion Dental Mexicana and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of CES Odontología is the property of Universidad CES and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revista ADM is the property of Asociacion Dental Mexicana and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revista Facultad de Odontología Universidad de Antioquia is the property of Universidad de Antioquia and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revista ADM is the property of Asociacion Dental Mexicana and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of CES Odontología is the property of Universidad CES and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revista ADM is the property of Asociacion Dental Mexicana and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Objective. To evaluate differences between anatomic and radiographic measurements of the thickness on residual dentin in distal roots of mandibular first molars. Material and method. Thirty mandibular first molar were decoronated. Subsequentlely, the distal root were introduced in an endodontic cube. Roots were sectioned horizontally at a pre-established level and reassembled in an acrylic muffle device. Hand files were used for root canal preparation and Peeso reamers were used for the space preparation for a post to a depth equal to the crown length. To allow the comparison between the thicknesses of the residual radiographic dentin, standardized parallel radiographs (RVG) and digital photographs at the pre-established level were taken during three stages before preparation, after preparation and after enlargement. The thickness of the mesial and distal walls of each root was measured and recorded using imaging software (Imagetool 3.0). Results. The differences were analyzed with paired t-test, showing a highly significant difference (p<0.05) when radiographic and anatomical measurement of mesial wall were compared. The comparison of the measurement in the distal wall did not show any statiscally significant difference. Conclusions. The thickness of the wall of the root canal determined by radiographs was greater than the anatomic measurement in mesial wall, but in the distal wall no significant difference were found. [ABSTRACT FROM AUTHOR]

Objective. The aim of this study was to evaluate the compressive strength of post and cores elaborated with composite resin and ceromer. Material and method. This study included a sample of 30 premolars distributed in two groups: 15 teeth for composite resin post and cores and 15 teeth for ceromer post and cores. The dental pieces were seccionated to obtain an 18mm dental remaining preserving 2mm of coronal structure. The root canal preparation was made with die Step back technique and die filling with die active lateral condensation technique. The root canal desobturation was standardized keeping 6mm of filling material. The post and cores were prepared and cemented and dental pieces placed in acrylic bases. The samples were taken to the laboratory for the compressive strength test using Houndsfield tensometer. Results. The composite post and core had a compressive strength of 43.25 Mpa and the ceromer post and core 30.42 MPa, showing a statistically significant difference between the two materials (p = 0.001). Conclusions. Composite resin post and cores presented a greater compressive strengtii that ceromer made ones. [ABSTRACT FROM AUTHOR]

Objective. To determine the distance between the maxillary sinus floor and the apices of the second molar by sex and age group in a sample of human skulls. Material and Method. The sample consisted of 100 adult skulls of both sexes, resected by surgical preparation and exposure of the maxillary sinus of the root tips of the second molar. We applied statistical tests: Student t.test and the coefficient "r" of Pearson to demonstrate associations and significant differences between sex and distance apico-sinus as well as between the age group and the distance. Results. In the 31 -40 years group the sample data indicate a higher mean apical-sinus distance for males (3,26) compared to women (2,44) and the group of 51 to 60 more years the average of the distance was also greater in male (4,00) than female (3,41), findings that were statistically significant. Conclusions. In the age group, the distance between the maxillary sinus floor and the apices of the second molar showed a significant decreasing trend as age increased. [ABSTRACT FROM AUTHOR]

Teeth development results from a complicated interaction between oral epithelium and underlying mesenchematic tissue during odontogenesis. Abnormal interaction between this tissues could result in development and eruption of an ectopical, anomalous teeth or with an anatomical variation. This report shows three cases of teeth with anatomical variations at root and pulp canal in mandibular canine and bicuspid, and maxillary first bicuspid. Diagnosis of these cases was performed through radiographical analysis. Mandibular canine and bicuspid shown two root and two pulp canals, maxillary first bicuspid presented three roots and three pulp canals. Considering that maxilar tooth showed caries closer to pulp chamber, patient was derived to an endodontic specialist to perform an endodontic treatment and rehabilitation. Idealizing root canal as a simple and invariable structure is a mistake. Clinicians always ought to take into consideration potential anatomical variations in teeth, especially in those that require endodontic treatments or any kind of procedure inside root canal system. Timely and adequate indication of imagenological complementary exams allow an adequate diagnosis of anatomical variations that will decrease chances of accidents during treatment. [ABSTRACT FROM AUTHOR]

The root canal length in the root canal treatment has a crucial role since it determines the limit of biomechanic preparation. The purpose of this study was to compare the accuracy of electronic apex locators (EAL) Root ZX, Elements Diagnostic Unit and Apex Locator, Radiovisiography (RVG) and the radiographic technique (RT) comparing the length to the minor diameter of root canal. An experimental study was made, in Vitro, comparative; with paired measurement of the length obtained by different methods from obtaining of root canal length comparing it to the length from the minor diameter of the root canals. Forty five human teeth were included with mature apex, without fractures or root resorption. The teeth were seeded in alginate impression material to obtain the length of work by means of the EAL, while with RVG and RT to the radiographic vertex was determined when the end of the instrument appeared between .5 and 1 mm. ANOVA repeated measures were used not finding statistically significant differences between the different methods (p> .05). Exact estimations were identified until .5 short mm to the smaller diameter in 35% and 37% with the RVG and Root ZX II respectively. Nevertheless with all the methods it was found that from the 14 to 22% of over estimations of .6 to more than 1 mm of the minor diameter. In 28.8% y 26.6% the file was visible to apical foramen or more with radiovisiography or conventional radiography respectly. [ABSTRACT FROM AUTHOR]

The objective of this study was to determinate the morphology and length of the root canals in Nayarit population. For the study there selected 130 dental pieces; to which root treatments were made. For measuring the rooth canal length we used the Ingle technique; in which we take an Rx of the dental piece and make the measurement, after that a K file was intoduce to the root an re-take the Rx, in this Rx, we measure the length from the end of the K file to the root canal vertise. After the stats results we found significative differences between the lengths in root canal, in the diferent regions of the state, also male root canals were longer than the female ones; another result that we found was the significative differences between this and other studies; in molars that had 4 rooth canals also the length was higher. [ABSTRACT FROM AUTHOR]

Objective: This study aimed to determine the accuracy and correctness of an apical locator Foramatron IV in single-rooted pieces, either vital or nonvital pulp Material and method: We conducted a clinical study, comparing 30 patients of both sexes, aged between 16 and 62 years old who required root canal treatment. This study has as objective to determine the accuracy and correctness of an apical locator, Foramathon IV on the canal of single rooted pieces, either with vital or nonvital pieces. We compared the accuracy in measuring the working length using conventional radiographic method with the locator Periapical and apical Foramatron IV. Results: The results showed that when comparing a clinical comparative study was made with 30 patients of both sexes, aged between 16 and 62 years old who requerided root canal treatment. Vital and nonvital pieces were considered for the study. Accurancy in measuring the work lenght was compared using conventional radiographic method, with periapical radiograpghic method with periapical radiographics and the apical locator, Formaton IV compared with the use of periapical radiographs, there were significant differences (p = 0.0005) reaching the apex locator to 96% accuracy, whereas radiographic method, we obtained an accuracy of 56%. No significant difference in the accuracy of radiograph according to the vitality of the pizzas dental pulp (p = 1.000). Conclusions: apex locator Foramatron IV is more effective in determining the radiograph in vivo, that the conventional radiographic method. [ABSTRACT FROM AUTHOR]

This report presents canin retained's extirpation because it has caused radicular reabsortion on antero superior teeth and dental stabilization with endodontic implants. This procedure was performed in the Clinically Quirrgico Center of Specialized Dentistry, University of San Martín de Porres. The treatment consists of the root canal treatment of affected pieces, the removal of retained canin, and the transendodontic fixation. The case was resolved with acceptable functional results. [ABSTRACT FROM AUTHOR]

Introduction: In this in vitro study, there was evaluated the permeability of the underfilling root canals with three sealers, which were portrayed in chemical-mechanical way in order to achieve optimal working length. Material and Methods: There were used 60 mesial root canals of permanent lower molars divided (G1) Gutta-percha - Endofill, (G2) Gutta-percha - Roek Seal and (G3) Resilon obturation system (cones and resin Epiphany Seal), which were portrayed by the Pro-taper Re treatment (D1, D2) and chloroform as solvent. Results: There were evaluated qualitatively using the Chi Square test finding that it was statistically significant (p <0.005) among the groups (G1) and gutta-endofill (G2) Roek percha seal compared to the (G3) Epiphany Resilon system seal. Conclusions: The study showed that sealers: Endofill and Roeko seal showed higher permeability than the Epiphany in under filling root canals. [ABSTRACT FROM AUTHOR]

Copyright of CES Odontología is the property of Universidad CES and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The endodontic flare up is a clinic challenge, and do not exist clear information for the factors related. This a observational and prospective study for investigate the endodontic flare up over, 389 patients with root canal treatment and related with age, sex, tooth type, intensity of preoperative and postoperative pain score on visual analogue scale (VAS). The results analyzed on 138 patients with necrotic pulp diagnose (35.4%) of these, male was 26.8% (31.3 ± 15.3 years old); and female 73.2% (36.2±13.5 years old). Identified 7 flare up patients (5.07%), 5 was female (3.6%). The teeth more affected were 2.2 and 2.6. The preoperative pain in the flare up patients was 67.5 ± 39.3 and not flare up 7.9 16.1 VAS (p < .0001). As well observed the immediately postoperative pain (17.5 24.5) on the flare up patients presented significant statistical differences compared not flare up (2.4±9) (p=0002) and not significant with the postoperative intervals time remaining. [ABSTRACT FROM AUTHOR]

Copyright of Revista ADM is the property of Asociacion Dental Mexicana and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Objective: to avoid the microfiltration in the root canal using cyanoacrylate to seal the cavity. Material and Method: experimental, transversal, comparative study; done in 60 extracted bottom human canines, one single canal, no calcification, standardizing the radicular portion to 16mm, the biomechanics preparation to 15mm. Three groups were classified: I: disobturated, without apical compaction or coating, II: desobturated, with apical compaction and without coating. III: desobturated, with apical compaction and coated with cyanoctylate using paper cones Number. 55. The external side was covered with two coats of nail polish, except for the apical third and the cervical surface. Dried for three hours, were submerged in blue methyl for 48 hours. After three hours, they were washed up with water and dried for 24 hours. The varnish was taken out and were frozen for 24 hours. Finally they were broken to observe, measure and analyze the micro filtration. Results: The Group III presented a less microleakage compared with the other groups as well as in the ihird apical itself was a minor leak in comparison with the other thirds. These were analysed using the Kruskal Wallis test, which determines that there is difference between the levels of microfiltration in the different groups and thirds of the teeth studied. Conclusion: The cyanoacrylate is a impermeable material and can be used in the root canal. [ABSTRACT FROM AUTHOR]

Copyright of Revista ADM is the property of Asociacion Dental Mexicana and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The objective of the study was to evaluate the time of bacterial filtration, obtained in root canal with and without medication intracanal, using a model of bacterial filtration. Material and method: There were utilized 49 human tooth extracted uniradicular that after the removal of their crowns, had their canals prepared to 1 mm before the apex radicular to the instrument N° 45;subsequently, 3 groups of f 5 were.separated in: hydroxide of calcium plus water distilled (G1), hydroxide of calcium plus glycerin and paramonoclorofenol (G2) and without medication intracanal (G3). The groups were sealed temporarily with Coftosol. Furthermore, 4 teeth were used of group control: 2 positive and 2 negative. AlI the teeth were submitted lo models of bacterial filtration to observe the contamination by a period of 21days. Results: The average of aforesaid bacterial contamination in days was statistically significant (p<0,001) for the calcium hydroxide paste plus glycerin and paramonoclorofenol, in comparison to the canals that did not receive medication intracanal. Conclusions: The study showed that the materials of temporary restoration and the medicines are susceptible to the bacterial filtration. [ABSTRACT FROM AUTHOR]

Copyright of Medicina Oral (16656024) is the property of Colegio Nacional de Cirujanos Dentistas Militares A.C. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Medicina Oral (16656024) is the property of Colegio Nacional de Cirujanos Dentistas Militares A.C. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Medicina Oral (16656024) is the property of Colegio Nacional de Cirujanos Dentistas Militares A.C. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Medicina Oral (16656024) is the property of Colegio Nacional de Cirujanos Dentistas Militares A.C. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)