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An in vitro comparative study of three root canal sealers in ability of apical seal

دراسة مخبرية مقارنة لثلاثة معاجين قنيوية حاشية من حيث قدرة الختم الذروي

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 Publication date 2015
  fields Dentistry
and research's language is العربية
 Created by Shamra Editor




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Aim: to compare the apical sealing ability of three root canal sealers in human extracted teeth using dye penetration. Materials and Methods: thirty extracted human maxillary teeth were instrumented 1mm short of the anatomical apex and randomly assigned to three groups (n=10), according to the root canal sealer used for obturation. The teeth were divided into three experimental groups and obturated by cold lateral compaction of gutta-percha and one of the following sealers: group I, Zinc oxide and Eugenol sealer; group II, Adseal; group III, Apexit plus.The teeth were covered with nail varnish to within 2-3mm of the apical foramen and immersed in 2% methylene blue for 24 hours.After this period, the teeth were washed and cut longitudinally for apical leakage measurement inside the canal. Results: Statistical evaluation of the results showed no significant difference in the leakage between Adseal and Apexit plus (P =0.99). Leakage with ZOE was significantly lesser than Adseal (P=0.004) andApexit Plus (P=0.003). Conclusions:under the condition of this study, it can be concluded that ZOE presents lower apical leakage than Adseal and Apexit plus, and there was no significant difference in leakage between Adseal and Apexit plus.


Artificial intelligence review:
Research summary
تهدف هذه الدراسة إلى مقارنة قدرة الختم الذروي لثلاثة معاجين قنيوية حاشية مختلفة في أسنان بشرية مقلوعة باستخدام طريقة تسرب الصباغ. تم استخدام 30 سناً بشرياً علوياً مقلوعاً، وقسمت إلى ثلاث مجموعات، كل مجموعة استخدمت معجوناً مختلفاً: أكسيد الزنك والأوجينول، Adseal، وApexit Plus. بعد حشو الأسنان بالمعاجين المختلفة، تم غمرها في أزرق الميثيلين 2% لمدة 24 ساعة، ثم تم غسلها وشطرها لقياس التسرب الذروي. أظهرت النتائج أن أكسيد الزنك والأوجينول حقق ختماً أفضل مقارنة بـ Adseal وApexit Plus، ولم يكن هناك فرق كبير بين Adseal وApexit Plus. استنتجت الدراسة أن أكسيد الزنك والأوجينول هو الأفضل في الختم الذروي بين المعاجين الثلاثة المستخدمة.
Critical review
تعتبر هذه الدراسة مهمة في مجال طب الأسنان لأنها تقدم مقارنة واضحة بين ثلاثة معاجين حاشية مختلفة. ومع ذلك، يمكن أن تكون هناك بعض النقاط التي تحتاج إلى تحسين. أولاً، الدراسة اعتمدت على عدد محدود من العينات (30 سناً)، مما قد يؤثر على دقة النتائج. ثانياً، لم يتم تناول تأثير العوامل البيئية المختلفة مثل درجة الحرارة والرطوبة على أداء المعاجين. ثالثاً، كان من الممكن توسيع الدراسة لتشمل معاجين حاشية أخرى للحصول على مقارنة أشمل. وأخيراً، لم يتم مناقشة تأثير الزمن على فعالية الختم الذروي، وهو عامل مهم يجب أخذه بعين الاعتبار.
Questions related to the research
  1. ما هو الهدف الرئيسي من هذه الدراسة؟

    الهدف الرئيسي هو مقارنة قدرة الختم الذروي لثلاثة معاجين قنيوية حاشية مختلفة في أسنان بشرية مقلوعة باستخدام طريقة تسرب الصباغ.

  2. ما هي المعاجين الثلاثة التي تم اختبارها في الدراسة؟

    المعاجين الثلاثة هي أكسيد الزنك والأوجينول، Adseal، وApexit Plus.

  3. ما هي النتائج الرئيسية التي توصلت إليها الدراسة؟

    النتائج الرئيسية أظهرت أن أكسيد الزنك والأوجينول حقق ختماً أفضل مقارنة بـ Adseal وApexit Plus، ولم يكن هناك فرق كبير بين Adseal وApexit Plus.

  4. ما هي التوصيات التي قدمتها الدراسة بناءً على النتائج؟

    يوصى باستخدام أكسيد الزنك والأوجينول مع طريقة حشو الأقنية الجذرية حيث يؤمن ختماً جيداً في حال تمت طريقة الحشو بشكل جيد.


References used
KING KT, ANDERSON RW, PASHLEY DH, PANTERA EA. Longitudinal evaluation of the seal of endodontic retrofillings. J Endod. 1990;16:307-10
MILETIC I, ANIC I, PEZELJ-RIBARIC S, JUKIC S. Leakage of five root canal sealers. IntEndod J. 1999;32:415-8
GUTMANN JL. Adaptation of injected thermoplasticized gutta-percha in the absence of the dentinal smear layer. IntEndod J. 1993;26:87-92
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A good apical sealing is considered the key of the successful endodontic treatments. The aim of this study was to compare the apical seal of GuttaFlow and AH Plus using single cone and lateral condensation technique.
One aim of the root canal treatment is providing compact three dimensional seal for the canal system to prevent germs enter and its products across both the apical and coronal ways. Gutta-Percha is the most use material to fill the radicalism ca nals. It has limited importance in spite of many specifications as lack of the link to the ridge canal.
Aim of study: to compare the ability of four restorative materials (MTA - Composite - Zinc Phosphate - Glass Ionomer Cement) in coronal sealing of the endodontically treated root canal orifice in extracted teeth. Materials and Methods: 60 extracte d teeth with single canal were chosen. X-Ray Images were taken, then their crowns were cut off by using diamond disc, then the canals were classically prepared, after that, they were filled with Zinc Oxide Eugenol Cement and the gutta-percha cones using Lateral Condensation technique. They were left for (24) hours in order to ensure the quite hardening of the filling material. After that, the filling material was removed vertically by using an eraser tool up to a depth of (2) mm inside the root canal. Then, the teeth were randomly divided into four groups, each contained (15) teeth (n1=n2=n3=n4=15). The entry orifices of all the teeth were filled with one of the restorative materials. The teeth were coated with Varnish except for 1 mm around orifices, After then, they were immersed in Methylene Blue Dye of 2 % for five minutes. After that, the teeth were washed under a stream of plentiful water and left to dry. Longitudinal sections were made in the buccal lingual direction. Then the sections were examined under the optical magnifier to measure the liner dye leakage using a millimeter ruler designed by “AutoCAD 2013” Program.
The specimen consists of 72 extracted teeth with curved roots (15-35)degree . They were cleaned and preserved in formalin for 48 hours. Each tooth was mounted in a self curing acrylic block. The samples were divided into three groups. Each group (24 canals) was instrumented with one of the systems (WaveOne, Reciproc, OneShape).
Aim of Study: The antimicrobial intracanal medication was used widely, and the most common was calcium hydroxide dressing, which must be removed from the root canal before obturation, hence this study aimed to comparative efficacy of EndoVac and Navi Tip 30 G irrigation Needles with Naocl and CHX 2% in removing calcium hydroxide dressing from the apical third of root canal. Materials &Methods: Forty single root and canal teeth were decoronated to the length of 16 mm. Each root was prepared to the apical foramen using ProTaper Universal Hand System to size 40. Each tooth was embedded in silicone putty to create a set matrix, which allowed reassembly of the tooth for irrigation tests after splitting longitudinally. Then each tooth was split into two halves and an artificial groove (L:4, W:0,2 , D:0,5 ) was cut in one half of the root canal wall 1 mm from the apex ,which was then filled with a Ca(OH)2 paste. Digital images were taken before reassembling under stereomicroscope X40. Subsequently the two halves of roots were reassemble with wax , and remounted in their silicone matrixes, then divided into 2 groups.

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