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Register a new userComparsion of cleaning capacity and instrumentation time among manual (Kfile), hybrid and rotary(Flexmaster) instrumentation techniques in primary molars
مقارنة القدرة التنظيفية و زمن العمل بين نظام التحضير الآلي (Flexmaster) و الهجين واليدوي التقليدي (K-file) في الأرحاء المؤقتة- دراسة مخبرية
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Aِl-Baath University ورقة بحثية
Publication date
2018
fields
Dentistry
and research's language is
العربية
Created by
Shamra Editor
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الهدف المقارنة بين أنظمة التحضير القنيوية الآلي (Flexmaster) و الهجين و اليدوي التقليدي لتحديد النظام الأفضل بينها. المواد و الطرق: تم جمع 30 رحى مؤقتة مقلوعة غير ممتصة الجذور و فتح الحجرة اللبية لها بالسنابل الماسية و ثم تم حقن محلول الحبر الهندي ضمن الأقنية الجذرية لها و بعد 24 ساعة تم إجراء التحضير للأقنية الجذرية وفق ثلاث مجموعات.
Aim of study: To compare the cleaning effectiveness of manual, rotary Flexmaster and hybrid (manual and Pro taper) instrumentation techniques in primary molar teeth. Material and Methods: Thirteen primary molars without external resorption were selected. After endodontic access, the teeth were injected with Indian-ink and divided into three groups.
References used
Bodur H, Odabas¸ M, Tulunog˘luO¨ , Tinaz AC (2008) Accuracy of two different apex locators in primary teeth with and without root resorption. Clinical Oral Investigations 12, 137–41
Leonardo MR, Silva LAB, Nelson-Filho P, Silva RAB, Raffaini MSGG (2008) Ex vivo evaluation of the accuracy of two electronic apex locators during root canal length determination in primary teeth. International Endodontic Journal 41, 317–21
Da Silva LA, Nelson-Filho P, Faria G, Souza-Gugelmin MCM, Yto IY (2006) Bacterial profile in primary teeth with necrotic pulp and periapical lesions. Brazilian Dental Journal 17, 144–8
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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.
Few researchers have made a comprehensive study of the morphology of the
root canals of the primary molars. Thorough knowledge in internal anatomy of the primary molars is
useful in reducing the problems of endodontic therapy arising due to the ana
tomical variation in root
canals, which are clinically difficult to be detected.
Exploration the root canals of primary molars with regard to its number, variations, and accessory canals
in the furcation region.
the complication of the internal anatomy of primary molars causing complication in
endodontic treatment so the results of this study suggest avoiding pulpectomy in primary molars where
ever possible.
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.
The etching primary teeth dentin is more important factors for bonding
composit with primary teeth dentin.
objective: The aim of this research is to know the effect of time etching with the phosphoric acid 37% by
duration (7 or 15 seconds) for the composite bonding strength with primary molar dentin towards shear
strength.
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