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Register a new userتأثير تقنية الطبعة النهائية للنتوء السنخي المتبقي المسطح على ثبات التعويض السني الكامل المتحرك ( دراسة سريرية )
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University of Aleppo رسالة ماجستير
Publication date
2017
fields
Dentistry
and research's language is
العربية
Created by
Shamra Editor
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تأثير تقنية الطبعة النهائية للنتوء السنخي المتبقي المسطح على ثبات التعويض السني الكامل المتحرك ( دراسة سريرية )
No English abstract
References used
Kikuchi,M, F Ghani and M Watanabe Method for enhancing retention complete denture bases J Prosthet Dent 1999
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Introduction:
While literature demonstrates that the optimum accuracy for final
impressions is obtained with the custom trays, the use of stock trays for silicone impressions appears to be popular if the proper impression technique was used.
Purpo
se:
This in vitro study was done to evaluate the linear dimensional stability of impression made in stock trays and custom trays with different techniques, using poly vinyl siloxane as an impression material.
Materials and methods:
Three different impression techniques was done as follows:
1- Putty wash 1- step technique using stock tray
2- Putty wash 2- step technique using stock tray
3- 1-step technique using custom tray
For each technique, fifteen impressions of a maxillary partial edenulous metal master model were made and then poured. The accuracy was assessed by measuring five dimensions on stone casts poured from impressions of the master model, then these measurments was compared with the measurments of the linear dimensions of the master model.
Results:
Although the first technique was the most accurate, the statistical analysis showed statistically insignificant difference among the three different impression techniques for the stability of the linear dimensions.
Conclusion :
Making custom tray is time consuming and costly; therefore putty wash 1-step technique in adapted stock trays can be used as an alternative to provide accurate impressions, as obtained from custom trays .
تم استخدام العديد من الطرق لتحسين ثبات الزرعة مع ذلك توجد دلائل غير كافية لدعم العلاقة بين المعالجة بالليزر اللين وثبات الزرعة
In this research, the quantity of vitamin C which extracted from fresh fruits and
vegetables was evaluate by using titration method with 6-2 Dichloro phenol andovinol, and
studying the effect of conservation and different temperatures (30, 60, 90)
°C which used
in cooking on content of vitamin C for some samples. Also this search included studying of
the effect of iron ions on content tomato, orange and lemon of vitamin C.
The results showed that the concentration of vitamin c in studied samples: parsley,
red pepper, green pepper, lemon, orange and tomato was (8, 22, 36, 144, 175, 133)
mg/100g respectively. Losing of the vitamin was (66%, 65%) when we save the leaves and
stalk of parsley for 24 hours respectively, when exposure the parsley leaves to the
temperatures (30, 60, 90) c° the losing percentage was (24 %, 41%, 62 %), While the
losing was (79%, 65%, 39%) when injected each of tomatoes, oranges, lemons with
dissoluble of iron.
In this paper we prove that any right R-module M is coflat
Here we find that if R is a right coflat ring, then every finitely generated
right ideal is projective if and only if every quotient of right coflat R-module is
right coflat if and only if
every finitely generated right ideal is projective
relative to right coflat R-module.
In this search, has been studied set of practical experiences for compacting several
metal powders composed a metallic alloy based iron from powders with a proposed
geometric shapes (cylindrical). Several tests were done in order to reach the relat
ionship
between the final apparent density for the compact with a sintering time, and study
changing the geometric dimensions of the final compact after the completion of sintering
process during different time periods.
The tests and Measurement results had been demonstrated that sintering time affect
positively on the apparent density of the final compact which Manufactured by technique
metal powders, and thus will increase its strength, where proportionality is directly
proportional access even to a certain extent. And also its effect was an obvious shrinking
diameters samples used in the tests. And changing (increase or decrease) in height samples.
Search has shown the great importance of the follow-up studying and analyzing the
relationships which associate that variables of metal powders technique each other, and
their different effect on the final compact.
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