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Register a new userThe influence of distance and angulation between two implants in mandible on retention force of ball attachments retaining an implant overdenture An in vitro study
تأثير المسافة والتزوي بين غرستين في الفك السفلي على قوة تثبيت وصلات كروية مثبتة لجهاز مغط للغرسات ( دراسة مخبرية )
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Added by
Damascus University رسالة ماجستير
Publication date
2015
fields
Dentistry
and research's language is
العربية
Created by
Shamra Editor
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تنتشر المعالجة بالأجهزة المغطية للغرسات انتشارا متزايدا حول العالم فقد اصبح الجهاز المغطي المدعوم بالغرسات من الخيارات الرئيسية أثناء وضع خطة المعالجة وهو يتطور مع تطور أنظمة الغرس السني إلا أن الطبيب في بعض الحالات لا يتسطيع وضع الغرسة في المكان والزاوية المثالية .
The treatment with implant overdenture is wildly spreading around the globe. The implant overdenture has become a main options when we make our treatment plan . It is spreading world wild with the improvement of implantation systems. In some cases The dentist can not place the implant in the ideal position and angulation.
References used
Abad, A, Bertomeu, L. Bone resorption processes in patients wearing overdentures
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Background & Objective: Interimplant distance is one of the factors influencing interimplant crestal bone resorption. In addition, Several studies have shown the ability of microthreads and platform switching to minimize crestal bone resorption aroun
d implants. This study aimed at evaluating the effect of interimplant distances of 2 mm and 3 mm on the vertical resorption of interimplant bone peak.
Methods & Materials: 39 implants were inserted in 13 patients ( 6 males and 7 females) whose ages ranged between 30 -55 years old with an average of 43.7 years. Every patient received 3 implants in the posterior mandible. Thus, we had tow study groups: First group where the interimplant distance was 2mm, and the second group where the interimplant distance was 3mm.The amount of vertical resorption of interimplant bone peak was measured radiographically at implant exposure, prosthesis delivery, 3 months after loading, and 6 months after loading. Statistical comparisons were performed using T student test ,and the P-value was set at 0.05.
Results: No statistically significant differences were found between the 2 groups regarding the amount of vertical resorption of interimplant bone peak . The mean vertical resorption of interimplant bone peak was 0.48 mm in the first group and 0.23 mm in the second group at the end of study.
Conclusion: Within the limits of this study, there are no statistically significant differences in the influence of interimplant distance of 2mm and 3mm on interimplant crestal bone resorption.
Aim of the study was To Compare the efficiency of R
ProTaper and R-Endo retreatment files in the removal of
conventional gutta-percha and resin coated gutta-percha and
time required. 60 extracted single root premolars were selected,
and then divi
ded into two groups according to the obturation
material. Next, each group was divided into two groups
according to the methods of retreatment.
The present study aimed to assess the influence of curing
distance on the loss of irradiance and power density of two curing
light devices of two different systems.
Two dental curing devices were used in this study,
Halogen unite (Chromalux 75) and light emitting diodes (LED)
(Bluedent smart),
the aim of our study is comparing
theretentive and stability forces between mandibular overdentures
retained by two implants and mandibular overdentures retained by
four implants by using ball attachments.
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
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