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Register a new userThe Relationship between the Shear and Tensile Bond Strength and the Type of Adhesive Material for Bonding Orthodontic Brackets: Comparative Study
العلاقة بين قوة الإلصاق المقاومة لقوى القص و الشد و نوع المادة اللاصقة المستخدمة في إلصاق الحاصرات التقويمية – دراسة مقارنة
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هدفت الدراسة إلى تقييم مدى مقاومة كل من المادة الأساسية ذاتية التخريش و اسمنت الزجاج المدعوم بالراتنج لكل من قوتي القص و الشد، و ذلك مقارنة بالراتنج ضوئي التصلب. أظهرت المادة الأساسية ذاتية التخريش قوة إلصاق أعلى من الراتنج ضوئي التصلب في حين أظهر أسمنت الزجاج قوة إلصاق أقل بشكل نوعي. إن استخدام المادة الأساسية ذاتية التخريش هو مناسب للإلصاق السريري للحاصرات التقويمية.
The purpose of this study was to evaluate the shear and tensile bond strengths of orthodontic brackets bonded with self etching primer and resin-reinforced glass ionomer cement in comparison with light cured resin adhesive. The tested self-etching primer and adhesive systems produced bond strength values higher than that of the light cured resin adhesive whereas the resin-reinforced glass ionomer cement showed a significantly reduced bond strength . Clinically, the use of self-etching primer and adhesive systems is suitable for orthodontic bracket bonding.
References used
Buyukyllmaz T, gaard B, Dahm S. The effect on the tensile bond strength of orthodontic brackets of titanium tetra fluoride (TiF4) application after acid etching. Am J Orthod Dentofacial Orthop 1995;108:256-61
Lee BS, Hsieh TT, Lee YL, Wan-Hong Lan, Hsu YD, Wen PH, Lin CP. Bond strength of Orthodontic bracket after acid etched, Er:Yag Laser-irradiated and combined treatment on enamel surface. Angle Orthod 2003;73:565-570
Serdar UM, Orhan M, Aslıhan US, Laser etching of enamel for direct bonding with an Er,Cr:YSGG hydrokinetic laser system, Am J Orthod Dentofacial Orthop 2002;122:649-56
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The laser has been used as an alternative effective method of etching enamel surface for direct bonding of orthodontic brackets instead of phosphoric acid. The aim of this study was to compare shear bond strength of orthodontic brackets following Er-
YAG versus Nd-YAG Laser etching. Eighty human extracted upper premolars were collected and divided randomly into two equal groups; the buccal enamel surface of the first group was etched by Er-YAG laser while the second group was etched by Nd-YAG laser. Each group was divided into two equal subgroups according to the bonding material type (chemical cure resin or light cure resin). The mechanical test has occurred by using a universal testing machine (Instron). The finding showed that no statistically significant differences in mean of shear bond strength between (Nd-YAG, Er-YAG) Laser etching group were found regardless of the bonding type.
With the increase in the number of adult patients seeking orthodontic treatment, the need to ensure sufficient bonding strength for the fixed orthodontic components on the ceramic restorations has become an urgent matter. Adhesion of the orthodontic
bracket is an essential and indispensable step.
The Objective is to determined whether enamel conditioning with sodium
hypochlorite (5,25%) and EDTA prior to etching was increased shear
bond strength of orthodontic brackets bonded with resin – modified glass
ionomer. our sample consisted of 42 extracted human premolars were
randomly divided into 3 groups.
This study aimed to compare the effects of different enamel
etching techniques for bracket bonding strength. The sample
consisted of eighty human premolars were randomly divided into
four equal groups. The enamel surfaces of the teeth were etched
with 35% orthophosphoric acid in Group 1 , air abraded with
50 μm aluminum oxide prior to acid etching in Group 2, Trans
bond Plus Self-etching Primer (TPSEP) in Group 3 , Er: YAG
laser in Group 4. After enamel etching procedures, brackets were
bonded with Trans bond XT , then shear bonding test was
performed using a testing machine (Tinius Olsen).
Background
Resin bonded fixed partial dentures appeared to prevent the excessive preparation of dental
tissue
Investigation of surface treatments to improve the bond of resin cements to metals may contribute
to the longevity of these restoration
s. Due to the potential lack of ideal preparation form the type of alloy
and its surface pretreatment may have clinically relevant correlations with the retentive strength of castings
to minimally retentive preparations
Aim
The aim of this search is to study the bonding resin cement strength to different types of the metal
alloy due to the surface treatment
Purpose Evaluate the effects of two different surface treatments on shear bond strength SBS between a
palladium silver alloy Pb Ag and commercially pure titanium CP Ti cast alloy with resin luting cements
metal type
تأثير نوع المعدن
ومعاملة السطح على مقاومة القص لارتباط الإسمنت الراتنجي
الإسمنت الراتنجي
shear bond strength of resin
خليطة بلاديوم
فضة ( Pb-Ag)
التيتانيوم النقي تجاريا (CP Ti)
المهيئ المعدني (MZP)
Commercially pure titanium
metal zirconia primer
palladium‑silver alloy
resin cement
sandblasting
المزيد..
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