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Register a new userEffect of fissure morphology on the in vitro microleakage and penetrability of pit and fissure sealants in upper premolars
تأثير شكل الشق على التسرب الحفافي و نفوذية المادة السادة للوهاد و الشقوق مخبرياً في الضواحك العلوية
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Aِl-Baath University ورقة بحثية
Publication date
2016
fields
Dentistry
and research's language is
العربية
Created by
Shamra Editor
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الهدف من هذه الدراسة المخبرية هو تحديد تأثير نوذج الشق على التسرب الحفافي و على انسيابية المادة السادة. تم تنظيف و تخريش و ختم السطح الطاحن ل 90 ضاحكا علويا مقلوعا و خاليا من النخر, أخضعت بعدها الأسنان للدورات الحرارية ثم طليت بطبقتين من طلاء الأظافر مع ترك نافذة 1 ملم حول حواف المادة السادة ثم غمرت الأسنان بمحلول أزرق المتلين 1% لمدة 24 ساعة, تم قص تاج كل سن طوليا بالاتجاه الدهليزي الحنكي و فحصت المقاطع بالمكبرة الضوئية تحت تكبير 40x لتحديد كل من نماذج الشقوق و التسرب الحفافي و انسيابية المادة السادة.
The aim of this in vitro study was to determine the effect of fissure types on the microleakage, and penetration ability of fissure sealant. The occlusal surface of ninety caries-free extracted human upper premolars were cleaned, etched and sealed with (UltraSeal XT Plus) Sealant. The sealed teeth were thermocycled then coated with two layers of nail varnish, leaving exposed a 1 mm window around the sealant margins and then immersed in 1% methylene blue for 24 hours. Each tooth was sectioned bucco-lingually and examined with a stereo microscope (40x magnification) for fissure types, microleakage, and penetration ability.
References used
Selwitz, R.H., A.I. Ismail, and N.B. Pitts, Dental caries. The Lancet, 2007. 369(9555): p. 51-59
Marsh, P.D. and B. Nyvad, The oral microflora and biofilms on teeth, in Dental Caries. 2008, Blackwell Publishing Ltd
Lundeen, T., J. Sturdevant, and T. Sluder, Clinical significance of dental anatomy, histology, physiology, and occlusion. Sturdevant C, Roberson TM, Heymann HO, Sturdevant JR. The art and science of operative dentistry 3rd ed, St Louis: Mosby, 1995: p. 10-59
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The aim of this study was to compare microleakage of resin-based
sealant Helioseal F with or without bonding agent. Fifty-six sound
human maxillary first premolar teeth were collected which were
extracted for orthodontic purpose, then the teeth we
re randomly divided
into two main equal groups; group (1) and group (2), the first group was
treated with Tetric N Bond bonding agent, whiles the second group
without.
Aim: to compare the effect of multiple usage and surface coarseness of diamond
burs on marginal microleakage of cervical resin composite restorations.
Materials and methods: sixty extracted premolars without caries were chosen. The
sample was rand
omly divided into three groups: n1=n2=n3=20. Group(1): class v cavities
were prepared using super coarse diamond burs, group(2): prepared by coarse diamond
burs, whereas group)3(: prepared by medium coarse diamond burs. All cavities were
restored by resin composite, then The teeth were thermocycled and immersedIn5%solution
of methylene blue dye for 12hours.Then the teeth were sectioned vertically, Dye
penetration was evaluated using a 10X stereomicroscope at the occlusal and gingival
margins. Data were collected and statistical analysis was conducted.
Results: The results showed that the multiple use of super coarse diamond burs
caused no significantly statistically affect on occlusal and gingival microleakage (P>0.05).
However, the multiple use of coarse and medium diamond burs caused significantly
statistically affect on gingival marginal microleakage (P<0.05).
Ozone is now considerd as a pharmaceutical, non operative
,new clinical treatment for carious lesions. The purpose of this study was to
assess the efficacy of Ozone for the management of pit and fissure caries
lesions in first permanent molars.
The aim of this study is to evaluate the microleakage
resultant from; Silorane resin composite restorations in primary
teeth Prepared Using Burs And Er:YAG Laser with or without
using additional etching.
During the previous decade, resins were widely used in the restoration of posterior teeth, as it was found that wear occurs in the abrasive and adjacent section of resin-based restorations, while in the marginal areas, marginal leakage was observed.
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