Apical seal of root canals with gutta-percha points with calcium hydroxide

The objective of this research was to determine if gutta-percha points with calcium hydroxide [Ca(OH)2] improve the apical seal after root canal filling and if the master point does it alone. Human single recently extracted teeth were biomechanically prepared and the root canals filled by the lateral condensation technique with ZOE and gutta-percha points, with or without calcium hydroxide. The teeth were placed into a 2% methylene blue solution in a vacuum environment for 24 h after which they were processed for stereomicroscope evaluation. Better results were observed with the teeth filled with gutta-percha points with calcium hydroxide (p=0.01). We conclude that these new points make a better apical seal and that these results can also be obtained with the calcium hydroxide master point associated with regular ones (p=0.05).

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In Vivo Comparative Evaluation of Periapical Healing in Response to a Calcium Silicate and Calcium Hydroxide Based Endodontic Sealers

Open Access Macedonian Journal of Medical Sciences ◽

10.3889/oamjms.2018.293 ◽

2018 ◽

Vol 6 (8) ◽

pp. 1475-1479 ◽

Cited By ~ 2

Author(s):

Dalia Y. Zaki ◽

Mohamed H. Zaazou ◽

Maram E. Khallaf ◽

Tamer M. Hamdy

Keyword(s):

Calcium Hydroxide ◽

Root Canal ◽

Calcium Silicate ◽

Negative Control ◽

Root Canal Filling ◽

Root Canals ◽

Filling Materials ◽

Gutta Percha ◽

Periapical Healing

BACKGROUND: The composition of the root canal filling materials together with the apical limit of the root canal obturation affect the complete periapical healing after root canal therapy.AIM: This study was performed to evaluate and compare the periapical healing in response to calcium-silicate (iRoot SP) and calcium-hydroxide (Apexit) based-sealers.MATERIAL AND METHODS: Seventy-two upper premolars root canals of six dogs were used. The teeth were randomly assigned to four groups: Group one: roots were obturated using gutta-percha and Apexit-sealer; Group two: roots were obturated using gutta-percha&iRoot SP-sealer; Group three: the teeth were left open without obturation; Group four: where healthy teeth were used as a negative control. Teeth were evaluated after one, two and three months. The newly formed mineralised apical tissue and the periapical inflammatory infiltrate of the obtained photomicrographs were evaluated, and scorings were statistically-analysed.RESULTS: The mean percentage of the periapical inflammatory infiltrates and mineralisation scoring after one, two and three months evaluation period were not significantly different among the four groups (P > 0.05).CONCLUSIONS: Regardless of the sealer used, iRoot SP and Apexit promote healing of periapical tissues. IRoot SP sealer showed early insignificant more partial and almost full healing after two and three months.

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Influence of the sealer and a plug in coronal leakage after post space preparation

Journal of Applied Oral Science ◽

10.1590/s1678-77572004000300012 ◽

2004 ◽

Vol 12 (3) ◽

pp. 223-226 ◽

Cited By ~ 3

Author(s):

Roberto Holland ◽

Sueli Satomi Murata ◽

Monica Nunes da Silva ◽

Eloi Dezan Junior ◽

Valdir de Souza ◽

...

Keyword(s):

Methylene Blue ◽

In Vitro Study ◽

Methylene Blue Solution ◽

Root Canal Filling ◽

Human Teeth ◽

Gutta Percha ◽

Blue Solution ◽

The Subject ◽

Post Space

The subject of this paper was to conduct an in vitro study of the coronal leakage after root canal filling and post space preparation. One hundred single-rooted human teeth had their crowns removed and the canals prepared and filled by the lateral condensation technique with gutta-percha points and the sealers CRCS and Endofill (a Grossman cement). After post space preparation, the remainder of the filling was protected or not with 1mm of a plug of the following materials: Coltosol, Super Bonder (cyanoacrylate-ester), CRCS and Endofill. After 24 hours in saline, the specimens were immersed in a 2% methylene blue solution in a vacuum environment for 24 hours. The teeth were then sectioned longitudinally, leakage was evaluated linearly and the obtained data were submitted to the Kruskal-Wallis test. The results with the two sealers studied were similar between themselves and worse (p<0.01) than the groups with a protector plug. The statistical analysis ordered the experimental groups from the best to the worst in the following way: a - Endofill-Super Bonder, CRCS-Super Bonder, CRCS-CRCS; b - Endofill-Endofill; c - Endofill-Coltosol, CRCS-Coltosol; d - Endofill, CRCS.

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Healing of a tooth with an overinstrumented apex, extensive transportation and periapical lesion using a 5 mm calcium hydroxide apical plug: an 8-year follow-up report

Brazilian Dental Journal ◽

10.1590/s0103-64402012000500024 ◽

2012 ◽

Vol 23 (5) ◽

pp. 608-611

Author(s):

Ronaldo Araújo Souza ◽

Yara T. Corrêa Silva-Sousa ◽

Suely Colombo ◽

Maurício Lago ◽

Marco Antonio Hungaro Duarte ◽

...

Keyword(s):

Calcium Hydroxide ◽

Root Canal ◽

Apical Periodontitis ◽

Filling Material ◽

Root Canal Filling ◽

Apical Constriction ◽

Gutta Percha ◽

Open Apices ◽

Canal Transportation

Besides the risk of filling material extrusion throughout the apex, a satisfactory apical seal can be difficult to achieve in canals with open apices or iatrogenic enlargements of the apical constriction. These situations pose a challenge to root canal filling. This paper describes the root canal filling of a maxillary right canine with an overinstrumented apex, complete loss of the apical stop, extensive canal transportation and apical periodontitis. A 5 mm calcium hydroxide apical plug was placed before root canal filling. The plug was made by soaking paper points with saline, dipping the points in calcium hydroxide powder and then applying it to the apex several times, until a consistent apical plug was obtained. The canal was then irrigated with saline in order to remove any residual calcium hydroxide from the root canal walls, dried with paper points and obturated with an inverted #80 gutta-percha cone and zinc oxide-eugenol based sealer by the lateral condensation technique. An 8-year radiographic follow-up showed formation of mineralized tissue sealing the apical foramen, apical remodeling and no signs of apical periodontitis.

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Influence of calcium hydroxide points on the quality of intracanal dressing filling

Journal of Applied Oral Science ◽

10.1590/s1678-77572006000300014 ◽

2006 ◽

Vol 14 (3) ◽

pp. 219-223 ◽

Cited By ~ 2

Author(s):

Nicole de Mello Rahde ◽

José Antonio Poli Figueiredo ◽

Elias Pandonor Motcy Oliveira

Keyword(s):

Calcium Hydroxide ◽

Root Canal Filling ◽

Human Teeth ◽

Significance Level ◽

Root Canals ◽

Gutta Percha ◽

Group 2 ◽

Post Hoc

PURPOSE: The aim of this study was to evaluate, in vitro, the quality of calcium hydroxide [Ca(OH)2] paste filling (Ultracal, Ultradent) associated or not with Ca(OH)2-containing gutta-percha points (Calcium Hydroxide Plus PointsTM, Roeko) in curved root canals. MATERIAL AND METHODS: One hundred and twenty roots of extracted human teeth, randomly divided into three curvature ranges (mild - 0 to 14º; moderate - 15º to 29º; severe - >30º) were used. After chemomechanical preparation, the roots were assigned to 4 groups (n=30), according to the technique of intracanal dressing placement: group 1 - Ca(OH)2 paste was applied with a lentulo spiral; group 2 - Ca(OH)2 paste was applied with a lentulo spiral and a Ca(OH)2 point was inserted into the canal; group 3 - Ca(OH)2 paste was applied with a NavitipTM tip (supplied with Ultracal system); group 4 - Ca(OH)2 paste was applied with a NavitipTM tip and a Ca(OH)2 point was inserted into the canal. The roots were cleared and the quality of apical third filling was assessed by a calibrated experienced examiner. The specimens were examined under stereomicroscopy and scored 1 to 4 (i.e., from inadequate to complete root canal filling). The results were analyzed statistically by ANOVA and Duncan's post hoc test at 5% significance level. RESULTS: There were no statistically significant differences (p>0.05) among the curvature degrees in groups 1, 3 and 4. Severely curved roots in group 2 presented bordering significance (p=0.05). The groups that associated the use of Ca(OH)2 paste and points (2 and 4) showed better apical filling than the other groups, but this difference was statistically significant (p<0.001) only for roots with severe curvature. CONCLUSION: According to the results of this study, the curvature degree did not influence the quality of filling. The techniques that used Ca(OH)2-containing gutta-percha points yielded better filling of the apical third in roots with severe curvature.

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Staining Potential of Calcium Hydroxide and Monochlorophenol Following Removal of AH26 Root Canal Sealer

The Journal of Contemporary Dental Practice ◽

10.5005/jcdp-9-3-56 ◽

2008 ◽

Vol 9 (3) ◽

pp. 56-63 ◽

Cited By ~ 3

Author(s):

Ali Cemal Tinaz ◽

Baǧdagül Helvaciölu Kivanç ◽

Güliz Gürgül

Keyword(s):

Calcium Hydroxide ◽

Root Canal ◽

Filling Material ◽

Root Canal Sealer ◽

Tooth Structure ◽

Root Canals ◽

Gutta Percha ◽

Anterior Teeth ◽

Tooth Surfaces ◽

Tooth Preparation

Abstract Aim The focus of this study was to examine the staining potential of calcium hydroxide (Ca(OH)2) on tooth structure following the removal of AH26 root canal sealer. Methods and Materials Fifty maxillary anterior teeth were prepared and obturated with AH26 and gutta percha. The sealers were then removed 24 hours later and the teeth were randomly divided into two groups. Ca(OH)2 was then placed in the root canals of the first group of teeth as a medicament and camphorated monochlorophenol (CMCP) was placed in the second group of teeth after the filling material was removed. The color of the external tooth surfaces was determined before tooth preparation and two weeks after the placement of the medicaments. The Z test was used for statistical analysis. Results All experimental teeth showed varying degrees of coronal discoloration with the Ca(OH)2 group showing more discoloration than the CMCP group (p<0.05). Conclusion Using Ca(OH)2 as a medicament after removing AH26 caused progressive discoloration of the teeth, whereas using CMCP caused only slight discoloration. Clinical Significance To avoid staining of the treated tooth, AH26 root canal sealer must be completely removed from the dentin walls before using a medicament. Citation Tinaz AC, Kivanç BH, Görgül G. Staining Potential of Calcium Hydroxide and Monochlorophenol Following Removal of AH26 Root Canal Sealer. J Contemp Dent Pract 2008 March; (9)3:056-063.

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Effect of a sonic device on bonding of fiberglass posts to root canals

Brazilian Journal of Oral Sciences ◽

10.20396/bjos.v17i0.8654177 ◽

2018 ◽

Vol 17 ◽

pp. e18924

Author(s):

Marina de Almeida Salim ◽

Thais Mageste Duque ◽

Heloisa Carla Dell Santo Gusman ◽

Carolina Oliveira de Lima ◽

Brenda Paula Figueiredo de Almeida Gomes ◽

...

Keyword(s):

Root Canal ◽

Adhesive System ◽

Resin Cement ◽

Root Canal Filling ◽

Root Canals ◽

Gutta Percha ◽

Ah Plus ◽

Root Dentin ◽

Post Hoc ◽

Adhesive Cement

Aim: This study evaluated the effect of a sonic device on the bonding of fiberglass posts cemented with a self-etching adhesive combined with conventional cement or a self-adhesive cement to root dentin. Methods: Forty single-rooted bovine incisors were endodontically prepared using a step-back technique. Gutta-percha and AH Plus sealer were used for root canal filling, combined with a thermoplasticization technique. After 1 week, the post space was prepared and the roots were divided into four groups according to the following factors: adhesive system/resin cement (Ambar/ AllCem Core [FGM] and RelyX U200 [3M]) and application mode (manual or sonic). The posts were cemented and the roots were cut into discs and submitted to push-out bond strength (POBS) test. The failure mode was evaluated using a stereoscope at 25x magnification. The data were analyzed statistically using ANOVA and Tukey’s post-hoc test (α = 0.05). Results: The sonically activated RelyX U200 group was superior to the other groups. RelyX U200 manually applicated showed similar results to those of sonically activated Âmbar/AllCem. These three groups outperformed the Âmbar/AllCem manually applicated group. Adhesive failure between dentin and resin cement was the most predominant pattern. Conclusion: Sonic application of self-etching adhesive and self-adhesive cement improved the POBS of fiber posts to the root canal.

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The Effect of Ultrasonic Agitation on the Porosity Distribution in Apically Perforated Root Canals Filled with Different Bioceramic Materials and Techniques: A Micro-CT Assessment

Journal of Clinical Medicine ◽

10.3390/jcm10214977 ◽

2021 ◽

Vol 10 (21) ◽

pp. 4977

Author(s):

Saulius Drukteinis ◽

Goda Bilvinaite ◽

Hagay Shemesh ◽

Paulius Tusas ◽

Vytaute Peciuliene

Keyword(s):

Root Canal ◽

Micro Computed Tomography ◽

Root Canal Filling ◽

Porosity Distribution ◽

Significance Level ◽

Ultrasonic Agitation ◽

Root Canals ◽

Gutta Percha ◽

Before And After ◽

Rotary Instrument

The present study evaluated the effect of ultrasonic agitation on the porosity distribution of BioRoot RCS/single gutta-percha cone (BR/SC) and MTA Flow (MF) root canals fillings used as apical plugs in moderately curved and apically perforated roots. Eighty mesial root canals of mandibular first molars were enlarged up to ProTaper NEXT X5 rotary instrument 2 mm beyond the apical foramen, simulating apical perforations. Specimens were randomly divided into four experimental groups (20 canals per group) according to the material and technique used for root canal obturation: BR/SC, BR/SC with ultrasonic agitation (BR/SC-UA), MF and MF with ultrasonic agitation (MF-UA). The ultrasonic tip was passively inserted into the root canal after the injection of flowable cement and activated for 10 s. The specimens were scanned before and after obturation with a high-resolution micro-computed tomography scanner, and the porosity of the apical plugs was assessed. The differences between groups were analyzed using the Kruskal-Wallis and Mann-Whitney tests, with the significance level set at 5%. None of the obturation materials and techniques used in this study was able to provide a pore-free root canal filling in the apical 5 mm. Considerably higher percentages of open and closed pores were observed in the MF and MF-UA groups, with the highest porosity being in the MF-UA group (p < 0.05). No significant differences were observed between the BR/SC and BR/SC-UA groups, where the quantity of open and closed pores remained similar (p > 0.05).

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Apical leakage after root canal filling with an experimental calcium hydroxide gutta-percha point

Journal of Endodontics ◽

10.1016/s0099-2399(96)80275-5 ◽

1996 ◽

Vol 22 (2) ◽

pp. 71-73 ◽

Cited By ~ 9

Author(s):

Roberto Holland ◽

Sueli Satomi Murata ◽

Eloi Dezan ◽

Oswaldo Garlipp

Keyword(s):

Calcium Hydroxide ◽

Root Canal ◽

Root Canal Filling ◽

Gutta Percha ◽

Apical Leakage

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Influence of apical patency and filling material on healing process of dogs' teeth with vital pulp after root canal therapy

Brazilian Dental Journal ◽

10.1590/s0103-64402005000100002 ◽

2005 ◽

Vol 16 (1) ◽

pp. 9-16 ◽

Cited By ~ 33

Author(s):

Roberto Holland ◽

Arnaldo Sant'anna Júnior ◽

Valdir de Souza ◽

Eloi Dezan Junior ◽

José Arlindo Otoboni Filho ◽

...

Keyword(s):

Connective Tissue ◽

Calcium Hydroxide ◽

Root Canal ◽

Healing Process ◽

Filling Material ◽

Experimental Conditions ◽

Root Canal Filling ◽

Root Canals ◽

Antibiotic Solution ◽

Periapical Healing

The purpose of this study was to investigate the periapical healing process of dogs' teeth with or without apical patency and after root canal filling with two types of sealers. Forty roots of premolars and incisors were utilized. The root canals were overinstrumented and dressed with a corticosteroid-antibiotic solution for 7 days to obtain ingrowth of periapical connective tissue into the canals. After this period, the tissue was removed in half of the specimens (groups with patency) and preserved in the other half (groups without patency). Canals were filled by lateral condensation technique with gutta-percha points and either a calcium hydroxide-based sealer (Sealer Plus) or a Grossman's cement (Fill Canal). The animals were killed by anesthetic overdose 60 days after the endodontic treatment and anatomic pieces were obtained and prepared for histologic examination. Data were evaluated in a blind analysis on the basis of several histomorphologic parameters. The groups without patency had better results (p=0.01) than those in which the ingrown connective tissue was removed. Comparing the sealers, Sealer Plus had significantly better results (p=0.01) than Fill Canal. In conclusion, both the apical patency (presence or absence) and the type of root canal filling material influenced the periapical healing process in dogs' teeth with vital pulp after root canal treatment. The use of a calcium hydroxide-based sealer in teeth without apical patency yielded the best results among the experimental conditions proposed.

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