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Effect of microwave disinfection on transverse strength and hardness of acrylic resin denture base materials
Joint Authors
Kazanji, Mundhir N.
Abd al-Rahman, Ghadah Y.
al-Siraj, Ala N.
Source
Issue
Vol. 11, Issue 2 (31 Dec. 2011), pp.284-291, 8 p.
Publisher
University of Mosul College of Dentistry
Publication Date
2011-12-31
Country of Publication
Iraq
No. of Pages
8
Main Subjects
Topics
Abstract AR
الأهداف : تهدف هذه الدراسة لتقييم تأثير التطهير بالموجات الدقيقة على قوة الانثناء و صلابة السطح لمواد قاعدة الطقم الاكريلية.
المواد و طرق العمل : تم تحضير 112 عينة لدراستها (56 من قاعدة الطقم المتصلبة بطريقة الحمام المائي و 56 تمثل قاعدة الطقم المتصلبة بطريقة الموجات الدقيقة) و بالأبعاد التالية : 65 ± 0.3 × 10 ± 0.03 × 2.5 ± 0.03ملم لاختبار قوة الانثناء 30 × 15 × ± 0.03 لاختبار صلابة السطوح تم تقسيم العينات إلى 7 مجموعات.
تم تحليل البيانات باستخدام تحليل التباين (الانوفا) و اختبار دنكن.
النتائج : دل تحليل البيانات المجموعة على وجود فرق معنوي في قوة الانثناء و صلابة السطوح بين المجاميع المدروسة.
الاستنتاجات : أظهرت الدراسة أن مادة قاعدة الطقم المتصلبة بطريقة الموجات الدقيقة أبدت بعد تعقيمها بالموجات الدقيقة نقصان في مقدار قوة الانثناء و الصلابة إما قاعدة الطقم المتصلبة بطريقة الحمام المائي فأظهرت بعد التعقيم بالموجات الدقيقة زيادة في مقدار قوة الانثناء بينما الصلابة لم تظهر إي فرق معنوي.
Abstract EN
To evaluate the effect of microwave disinfection on transverse strength and hardness of acrylic resin denture base materials.
Materials and methods : The samples were 112 samples (56 heat cured acrylic resin and 56 microwave cured acrylic resin) they were prepared in dimensions of 65± 0.3 x 10±0.03 x 2.5 ±0.03 mm (length, width and thickness respectively) for transverse strength test and 30 x 15 x 3±0.03 mm (length, width and thickness respectively) for indentation hardness test.
The sam-ples were divided into seven disinfection groups; each one contain five samples which were (control, 900 W or 540W for 3min either inside glass flask containing 150 ml of distilled water) or along with glass flask containing 150 ml of distilled water or alone.
The collected data were analyzed using analy-sis of variance (one way ANOVA) at P ≤ 0.05 and Duncan's multiple range test.
Results : the transverse strength of microwave acrylic resin samples were significantly decreased except samples that disinfect-ed by 540 watt microwave energy for 3 minute with water inside microwave oven.
The hardness num-ber for heat cured acrylic denture base showed no significant differences compared to control group while hardness number of microwave acrylic resin were significantly decreased in relation to control group.
Conclusions : Transverse strength of microwave acrylic resin that disinfected with microwave was decreased except at 540 watt for 3 minutes with water a side in microwave oven.
While heat cured acrylic resin after microwave disinfection was significantly increased compared with the control sam-ple.
Rockwell hardness number for microwave acrylic resin significantly decrease in relation to control group ; while for heat cured acrylic denture base showed no significancy comparing with the control group.
American Psychological Association (APA)
al-Siraj, Ala N.& Kazanji, Mundhir N.& Abd al-Rahman, Ghadah Y.. 2011. Effect of microwave disinfection on transverse strength and hardness of acrylic resin denture base materials. al-Rafidain Dental Journal،Vol. 11, no. 2, pp.284-291.
https://search.emarefa.net/detail/BIM-385342
Modern Language Association (MLA)
al-Siraj, Ala N.…[et al.]. Effect of microwave disinfection on transverse strength and hardness of acrylic resin denture base materials. al-Rafidain Dental Journal Vol. 11, no. 2 (2011), pp.284-291.
https://search.emarefa.net/detail/BIM-385342
American Medical Association (AMA)
al-Siraj, Ala N.& Kazanji, Mundhir N.& Abd al-Rahman, Ghadah Y.. Effect of microwave disinfection on transverse strength and hardness of acrylic resin denture base materials. al-Rafidain Dental Journal. 2011. Vol. 11, no. 2, pp.284-291.
https://search.emarefa.net/detail/BIM-385342
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references : p. 290-291
Record ID
BIM-385342