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Register a new userThe Effect of Etching Time with Phosphoric Acid on The Bonding Strength of Composite Restoration in Dentine of Primary molar
تأثير زمن التخريش بحمض الفوسفور في شدة ارتباط الراتنج المركب مع عاج الأرحاء المؤقتة (دراسة مخبرية)
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يعد تخريش عاج الأسنان المؤقتة بحمض الفوسفور من العوامل المهمة لارتباط الراتنج المركب بعاج الأسنان المؤقتة. معرفة تأثير زمن التخريش الحمضي بحمض الفوسفور 37 % مدة 7 ثوان و 15 ثانية في شدة ارتباط الراتنج المركب مع عاج الأرحاء المؤقتة تجاه قوى القص.
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.
References used
Fusayama T,Nakamura K, Kurosaki N, ET AL. Non Pressure Adhesion Of A New Adhesive Restorative Resin . J dent Res 1979;58:1364-1370
Nakabayashi N, Kojlma K. Masuhara E, The Promotion Of Adhesion By The Infiltration Of Monomers Into Tooth Substrates. J Biomed Mater Res 1982;16:265-273
Strdevant M C, ED: Theodor M, Roberson Harald O, Heymann Edwared J, Swift Jr . Art and science of operative dentistry , fifth edition 2006. Copyright by C.V.Mosby Company
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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.
The purpose of this study was to evaluate the effect of preetching
with phosphoric acid on microleakage of self-etch
adhesive material Adhes E in primary teeth.
The study involve 50 primary teeth(molars ,canins )which
extracted for orthodontic re
asons had no caries ,fractures ,crack.
The teeth were gathered in Hama university-pediatric dentistry
department. Class v cavity prepared in all samples.
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
The purpose of this study is to detect the relationship between dentin
bonding systems (total etch and self etch) and the marginal leakage of
composite resin restorations.
The research project sample consisted of 80 extracted central incisors obtained from the Oral and Maxillofacial Surgery Department as well as from private practices. These teeth were divided into two equal groups. The bonding agent ClearFil SE Bond w
as used in one group, whereas the OptiBond Solo Plus bonding agent was used in the other group. Each group was divided into four subgroups: (1) veneers performed without any bleaching, (2) veneers performed two weeks before bleaching, (3) veneers performed immediately following bleaching and (4) veneers performed two weeks after bleaching.
veneers were made using a special template which allowed producing the same size of all the specimens used in this project. These veneers were placed on the vestibular surfaces of enamel of the extracted central incisors.
The aim of the previous procedures was to study the effect of home teeth bleaching .
Teeth were embedded in acrylic blocks created in metallic cylinders. The bonding strength was measured through .
The results showed that there was a significant difference between the control subgroup and the second subgroup .
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