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Register a new userIn vivo study to Comparative between ProTaper Rotary instruments(hand),ProTaper(Next, Universal.) and HAND NiTi k file in preparation of long oval canal
دراسة مخبرية مقارنة بين أنظمة البروتيبر اليدوي و الـ Next و الـ Universal و الطريقة اليدوية باستخدام مبرد الـ K في تحضير الأقنية الجذرية الشريطية
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علي معروف( باحث )
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الهدف من البحث : مقارنة فعالية أربعة أنظمة تحضير هي البروتيبر اليدوي و الـ Next و الـ Universal و الطريقة اليدوية باستخدام مبرد الـ K في تحضير الأقنية الجذرية الشريطية. المواد و الطرق : تألفت عينة البحث من أربعين سناً بشريا مقلوعا بأقنية جذرية شريطية, حيث تم قص الأسنان في المستوى الذروي على بعد 3 ملم من الذروة. و طبقت تقنية Bramante المعدلة و تم تحليل التغيرات الحاصلة في القناة الجذرية في مساحة التحضير. (ΔA) و ذلك تحت التكبير × (10). حيث قسمت العينة الى أربع مجموعات (n1=n2=n3=n4=10) و تم تحضير كل مجموعة بأحد أنظمة التحضير المدروسة و تمت دراسة المتغيرات الناجمة عن التحضير بوساطة برنامج Auto Cad 2013.
Aim of Study : The objective of this study was to compare the shaping ability of ProTaper Rotary instruments(Universal,Next) ,Hand ProTaper instruments and traditional hand instruments in long oval-shaped root canals. Methods and materials: Forty human teeth with long oval-shaped root canals were sectioned at one level in the apical third far 3 mm at the apical root . A modified Bramantetechnique was used and analyzed changes in root canal in surface area (ΔA), under (10) magnification. Where the sample was divided into four subgroups each one contains (N=10) teeth and prepares by one of the four instrumentation systems. The morphological changes were analyzed by software Program (Auto Cad 2013).
References used
HULSMANN, M.; PETERS, O.A.; Dummer, P.M.H. Mechanical preparation of root canals: shaping goals, techniques and means. EndodTop,10, 30, 2005, 76
Schilder, H., Filling root canals in three dimensions. Dental Clinical North American, 11, 1967, 723-744
AYDIN C.; TUNCA YM.; SENSES Z.; BAYSALLAR M.; KAYAOGLU G.; ORSTAVIK D., Bacterial reduction by extensive versus conservative root canal instrumentation in vitro. Acta odontologica Scandinavica, 65, 2007,167,70
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Aim of Study: The objective of this study was to compare the shaping ability of
ProTaper Rotary instruments (Universal, Next), Hand ProTaper instruments and traditional
hand instruments in long oval-shaped root canals.
Methods and materials: Forty
human teeth with long oval-shaped root canals were
sectioned at 3 levels in the coronal, middle and apical third. A modified Bramante technique
was used and analyzed changes in root canal maximum buccolingual and mesiodistal
canal dimensions (ΔBL ,ΔMD) and changes in surface area (ΔA) , under (10X) magnification.
Where the sample was divided into four groups each one contains (N=10) teeth and
prepares by one of the four instrumentation systems. The morphological changes were
analyzed by software Program (Auto Cad 2013).
Aim: to compare the shaping ability of two rotary systems (Protaper Universal and
Protaper Next) and K-file hand instruments in curved root canals of extracted human
molars.
Materials and methods:Thirty extracted molars with curved canals were cho
sen. The
curvature of root canals was determined (15-40o) then the sample was randomly divided
into three groups: n1=n2=n3=10. Group(1): was prepared using K-file hand instruments
(Stand), group(2): prepared by Protaper Universal (PTU), whereas group3: prepared by
Protaper Next (PTN).The curvature after preparation and Time preparationwere evaluated.
Data were collected and statistical analysis was conducted.
Results: The three instrument systems (PTU, PTN, Stand) have caused significant
change in original canal curvature(P<0.05). On the other hand, there were no significant
differences between systemsin straightening of canal curvature (P>0.05). However, both
systems: PTN, Stand were significantly faster than PTU during preparation of curved
canals (P<0,001).Conclusion: under the conditions of this study, it can be concluded
thatall instruments caused changing in original canal curvature. However, the new
generation PTN was faster than old one PTU.
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.
The aim of this study is to investigate the effect of early
coronal flaring on changing the working length of curved
canals by using NiTi rotary instruments and SS manual
instruments.
Forty five MB curved canals of upper/lower first and second
extracted molars were used.
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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