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Register a new userThe influence of glass fibers reinforcement on fracture resistance in case of thin acrylic resin around the implant components in the implant –supported overdentures
تأثير التقوية بالألياف الزجاجية على مقاومة الكسر في حالة الثخانة القليلة للراتنج الأكريلي حول مكونات الزرعة في الجهاز الفوقي المدعوم الزرعات
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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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هدف البحث تقييم تأثير التقوية بالألياف الزجاجية على مقاومة الكسر حول مكونات الزرعة في الجهاز الفوقي المدعوم بالزرعات. تم تصميم نموذج من الأكريل و أسطوانة معدنية ليشابه النموذج السريري للجهاز الفوقي المدعوم بالزرعات، بالأبعاد ( 50 - 12 - 1.5 ملم ). 30 عينة مقسمة إلى 3 مجموعات ( 10 عينات غير مقواة، 10 مقواة بطبقة من الألياف الزجاجية، 10 مقواة بطبقتين من الألياف الزجاجية )، تم تعريض العينات لاختبار ثلاثي النقاط.
Objectives: The purpose of this study was to evaluate the influence of glass fibers in strength acrylic resin fracture around a overdenture abutment. A model was designed to simulate the clinical situation of an implant overdenture abutment (50-12-1.5mm). thirty specimens were divided divided into 3 groups, ( 10 specimens without glass fibers , 10 specimens with one glass fibers, 10 specimens with two glass fibers). All specimens were submitted to a 3-point bending test
References used
Goodacre CJ, Bernal G, Rungcharassaeng K, Kan JY 2003 Clinical complications with implants and implant prostheses. The Journal of prosthetic dentistry, 90(2):121-32
Rodrigues AH 2000 Metal reinforcement for implantsupported mandibular overdentures. The Journal of prosthetic dentistry ;83(5):511-3
(Hari Prasad A, Mohammed H, 2011 Effect of glass fiber and silane treated glass fiber reinforcement on impact strength of maxillary complete denture. Annals & Essences of Dentistry 3(4
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Objective: The purpose of this randomized، double-blind،controled trial was to
evaluate the clinical and radiographic effects of 0.12% chlorhexidine digluconate gel on
peri-implant (hard and soft tissues surrounding the implant) maintenance.
Mater
ial and methods: Forty patients (80 implants) who received two implants at
least were randomly assigned to two groups: 0.12% chlorhexidine digluconate gel as test
group، and placebo without CHX as control group. Clinical and radiographic parameters
were recorded at day 10، month 2، 4، and 6.
Results: All clinical parameters except PPD showed better results in test group which
had statistically significant reductions (P< 0.05) in modified plaque index، modified
gingival index، modified bleeding index and attachment level compared to the placebo
group. There were no significant differences between groups in probing pocket depth or
radiographic parameter.
Conclusions: The results of this clinical study indicate that twice daily use of 0.12%
chlorhexidine digluconate gel may enhance the peri-implant maintenance.
This research aims to study the effect of heat treatment on curing of reinforced Unsaturated Polyester Resin (UPR) with fiberglass, and to study the effect of storage time and the time of exposure to natural aging on curves absorption.
The results
showed that it is very difficult to reach a fully curing to UPR matrix, and
Storage samples for three years reveal resistance to degradation in fresh and seawater comparing with storage samples for three months, or aging by exposed to environmental for three years. The results showed also that the absorption occurs by thin film, and not prevent by increasing the layers of reinforcement
This research includes an experimental study and a nonlinear
analysis using the finite element method of reinforced concrete
beams with large opening in body that exist in shear zone . The
tested beams are simply supported with rectangular section
and
without additional reinforcement in opening region. The opening is
square in shape with variable dimensions and constant distance
from the support . Studying the effect of changing length of the
opening on the behavior of the reinforced concrete beams was
already completed. The modes of cracks , (load-deflection )
relationship, ultimate load and the mode of failure for all beams
were determinate . The study showed that existence an opening in
shear region of beams reduce the strength of beams and affect on
the mode of shear failure , and any addition in the depth of the
opening lead to early cracks , more deflections and less ultimate
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To report the results of evaluation of the color digital subtraction technique in
assessing quality and quantity peri-implant bone changes in dental x-ray imaging.
Isthe radiographic bone density bigger at the area of implant orof tooth?and is
thisdensity changingafter one year of function betweentooth and implant connected with bridge? the aim
of the studyis tostudythe changing of radiographic bone density d
uring one year of radial observation of
the bone area around the tooth and implant connected with bridge with 3 units(rigid or non-rigid
connection) depending on digital periapical radiographic.
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