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Register a new userEffect of Application Four Different Etching systems on Bond Strength of Orthodontic Brackets
تأثير تطبيق أربعة أنظمة تخريش مختلفة على قوة ارتباط للحاصرات التقويمية
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Aِl-Baath University ورقة بحثية
Publication date
2016
fields
Dentistry
and research's language is
العربية
Authors
مها عكاري( باحث )
Created by
Shamra Editor
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هدفت الدراسة إلى مقارنة تأثير تقنيات مختلفة للتخريش المينائي على قوة ارتباط الحاصرات . تألفت عينة البحث من ثمانين ضاحك بشري قسمت إلى أربع مجموعات متساوية خرشت فيها الميناء السنية باستخدام حمض الفوسفور تركيز 35 % في المجموعة الأولى ، سحلت هوائياً بجزيئات أوكسيد الألمنيوم ( 50 ميكرون ) قبل تخريشها حمضياً في المجموعة الثانية، بالمبدئ ذاتي التخريش TPSEP في المجموعة الثالثة بليزر Er :YAG في المجموعة الرابعة ، بعد تخريش الميناء ألصقت الحاصرات باستخدام Trans bond XT ثم أنجز اختبار قوة الارتباط المقاومة للقص بجهاز الاختبارات TiniusOlsen.
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).
References used
SINGH G, 2007-Text book of Orthodontics . Jaypee Brothers Ltd, 2nd edition
MIGUEl JA, ALMEIDA MA, CHEVITARESE O, 1995 - Clinical comparison between a glass ionomer cement and a composite for direct bonding of orthodontic brackets. Am J Orthod Dentofacial Orthop;107:484-7
ROGELIO J S, HOTTA Y, YAMAMOTO K ,2007-Examination of enamel-adhesive interface with focused ion beam and scanning electron microscopy. Am J Orthod Dentofacial Orthop ;131:646-50
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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.
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.
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.
An appropriate bond between glass‑ionomer and the superficial
resin materials is very important for the success of sandwich
technique. The aim of the present in vitro study was to evaluate the
effect of three surface treatments of conventional glass‑ionomer on
its shear bond strength to giomer
Etching by phosphoric acid is considered an important factor to achieve
resin bonding to Primary enamel.
Bond strength was significantly higher in the third group (etching for
35sec) than the other groups (etching for (15), (25), or (45)sec).
The
re were no significant differences in bond strength between etch
durations: (15), (25), or (45) sec.
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