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Register a new userEffect of Acid Etching Duration on Resin Bond Strength to Primary Enamel Using 37% Phosphoric Acid
تأثير مدة تخريش ميناء الأسنان المؤقتة بحمض الفوسفور %37 في شدة ارتباطها بالمواد الراتنجية
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يعد تخريش ميناء الأسنان المؤقتة بحمض الفوسفور من العوامل المهمة لارتباط الراتنج المركب بالميناء المؤقتة. كانت شدة الارتباط في مجموعة التخريش بحمض الفوسفور مدة ( 35 ) ثانية أكبر من باقي المجموعات المدروسة بفارق ذي دلالة إحصائية، في حين لم تكن هناك فروق ثنائية دالة إحصائياً في متوسط شدة الارتباط بين مجموعات التخريش بحمض الفوسفور مدة ( 15 ) أو ( 25 ) أو ( 45 ) ثانية.
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). There were no significant differences in bond strength between etch durations: (15), (25), or (45) sec.
References used
Hosoya Y., et al., The effect of acid etching times on ground primary enamel. J CLIN Pediatr Dent,, 1991. 15:: p. 188-94
Ferrari M., et al., Standardized microscopic evaluation of the bonding mechanism of NCR/PRIME&BOND NT. Am J DENT, 1999. 12: p. 77-83
Bishara SE., et al., Effect of altering type of enamel conditioner on the bond strength of the resin- reinforced glass ionomer adhesive,. J Orthod Dentofacial 2000. 118: p. 288- 94
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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.
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.
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).
Debonding of acrylic denture teeth from denture base is the most common
failure in removable dentures .
The purpose of this study was to evaluate shear bond strength between
acrylic denture teeth and heat cure denture base resin with different
surface treatment and modifications on the ridge lap area By Using
Conventional Method and Blasting Method.
Laser use and applications in dentistry has increased dramatically in the last
years. Laser etching of enamel may provide an alternative for conventional acid etching. The aim of this
study was to evaluate, under Scanning Electron Microscope(SEM),
enamel surface morphology after
laser irradiation with or without the addition of photoabsorber (black ink); with or without acid etching.
laser enamel etching produced surface
roughness that might be used for the infiltration and subsequent mechanical retention of resin.
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