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Register a new userEvaluation of temperature rise on the external root surface during the removel of separated instruments from the root broken instruments from root canals using ultrasonic tips (in vitro study)
تقييم ارتفاع حرارة سطح الجذر الخارجي أثناء استخدام الرؤوس فوق الصوتية لإزالة الأدوات المكسورة من الأقنية الجذرية ( دراسة مخبرية )
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Added by
Damascus University رسالة ماجستير
Publication date
2015
fields
Dentistry
and research's language is
العربية
Created by
Shamra Editor
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تعتبر رؤوس الأمواج فوق الصوتية من الأدوات الشائعة في تدبير الأدوات المكسورة في الأقنية الجذرية . لذلك كان هذه هذا البحث هو تقييم الحرارة المنتشرة على السطح الخارجي للجذر أثناء استخدام الؤوس فوق الصوتية لإزالة الأدوات المكسورة من الأقنية الجذرية للأرحاء السفلية
Ultrasonic Tips is considered one of the common tool used in the management of separated instruments in the root canal, . , this research aimed to evaluate the temperature rise of the outer surface of the root when using ultrasonic tips to remove separated instruments from mesiobuccal canal of the lower molars.
References used
Ahmad,M, PITT FORD, T .j.& crum, L.A. 1987 . Ultrasonic debridement of root canals : acoustic streaming and its possile role . j Edob 13,490-9
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Aim: to compare the shaping ability of NiTi hand instruments with Stainless- steel instruments in preparation of curved root canal in extracted teeth.
Materials and Methods: a total of 24 of curved root canal were randomly divided into two groups. O
ne group was prepared using stainless steel instruments and the other prepared NiTi instruments. Curvatures pre-and post instrumentation were registered and compared. And straightening of the canals were determined by autocad analysis system.
Results: two systems were significantly changed the original canal curvature with no differences between both systems. However, the time required to finish preparation was significantly less with NiTi system.
Conclusion: under the conditions of this study, it can be concluded that two hand instrumentation system changed the original canal curvature, but the time consuming to finish the preparation was less with NiTi hand system.
Residual Calcium Hydroxide dressing on the root canal is considered
one of the reasons of endodontic treatment failure. So ,the removal of
this dressing completely before filling is required. The aim of the study
was to evaluate the efficiencies o
f passive ultrasonic irrigation And
increasing the instrumentation of the medicated canal to the file one
size larger than MAF in removal of Calcium Hydroxide dressing.
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).
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This study was carried out to evaluate the
influence of a mixture of doxycycline HCl, citric acid, and
polysorbate 80 (MTAD) on the smear layer formed on root surface
after hand-instrumented periodontal treatment. MTAD was
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