جامعة بلاد الرافدين - Bilad Alrafidain University

year	syllabuses	Dep.	Step	Lectures
2024-2025	Dental material	Department of Prosthodontics Techniques	step 1	Impression materials lab
2024-2025	Dental material	Department of Prosthodontics Techniques	step 1	Acrylic resin lab
2024-2025	Dental material	Department of Prosthodontics Techniques	step 1	Physical properties
2024-2025	Dental material	Department of Prosthodontics Techniques	step 1	Mechanical properties
2024-2025	Dental material	Department of Prosthodontics Techniques	step 1	Solid structures of material
2024-2025	مادة سنية	Department of Prosthodontics Techniques	step 2	Tyoes of wrought alloys
2024-2025	مادة سنية	Department of Prosthodontics Techniques	step 2	Types of abrasives
2024-2025	مادة سنية	Department of Prosthodontics Techniques	step 2	Finishing and polishing
2024-2025	مادة سنية	Department of Prosthodontics Techniques	step 2	All ceramic restoration
2024-2025	مادة سنية	Department of Prosthodontics Techniques	step 2	Porcelain 2
2024-2025	مادة سنية	Department of Prosthodontics Techniques	step 2	Porcelain 1
2024-2025	مادة سنية	Department of Prosthodontics Techniques	step 2	Types of dental restoration
2024-2025	مادة سنية	Department of Prosthodontics Techniques	step 2	Base metals alloy
2024-2025	مادة سنية	Department of Prosthodontics Techniques	step 2	High noble alloy
2024-2025	مادة سنية	Department of Prosthodontics Techniques	step 2	Metal and alloys
2024-2025	مادة سنية	Department of Prosthodontics Techniques	step 2	Metal and alloys
2024-2025	مادة سنية	Department of Prosthodontics Techniques	step 2	Investment materials
2024-2025	مادة سنية	Department of Prosthodontics Techniques	step 2	Elastic impression materials
2024-2025	مادة سنية	Department of Prosthodontics Techniques	step 2	Impression material
2024-2025	مادة سنية	Department of Prosthodontics Techniques	step 2	مقدمة عن المادة السنية

Research

	2024	Brazilian dental science
"Objective: To reduce environmental biohazards, technicians should be educated with safe biological waste disposal procedures and dental material recycling. The present study assesses the retentive force, deformation test and XRD analysis of re-injection acetal resin clasps. Material and Methods: specimens were prepared for clasp retention test injection according to the manufacture’s instruction for acetal resin. The first group represent control group with (100% New) and other five groups as experimental groups (group II (25% old +75% new), group III (50% old + 50%) new, and group IV (75% old + 25% new) with different percentages between new acetal materials and old acetal materials, while two last groups with several times (group V (100% old) and group VI (re-injection two times)) only used old acetal materials. The X-ray diffraction (XRD) device used to give structural information for the materials to be tested. The study data were analyzed via One-way ANOVA (LSD) at a significant P-value of (p≤0.05) and a confidence level of 95%. Results: After comparing the results, a significant improvement in the retentive force of acetal clasp specimens after re-injection two times there was found high mean value in group re-injection two times and lower mean value recorded in control group. In XRD patterns of there was no diffraction peak refers to crystal structure of acetal resin. Conclusion: the present study findings concluded that the recycling of acetal resin enhanced the retentive force of acetal clasp and not affected on the crystal structures of material."

	2024	AIP Conf. Pro.
"Background: To reduce environmental biohazards, technicians should be educated with safe biological waste disposal procedures and dental material recycling. Objective: To evaluate the impact strength and apparent porosity of re- injection acetal resin in different percentages or several times. Materials and methods: Sixty specimens were prepared with dimension (65mm × 10 mm × 2 mm) length, width and thickness for impact test and fifty -four-disc specimens with dimensions (20±1 mm in diameter x 0.5 mm in thickness) for apparent porosity test and injection according to the manufacture’s instruction for acetal resin as denture base materials. The first group represent control group with (100% New) and other five groups as experimental groups. The old material is preparation by acetal sprue is collected and cutting by cutter and re-injection with new acetal resin. 07 May 2024 20:56:06 Results: After comparing the results of impact strength a significant difference in the impact strength of control (80.75±9.133) and re-injection groups. On other hand significant differences of apparent porosity test of all study groups. Conclusion: Recycling acetal resin as denture base that reduces the impact strength when increase using old material, on other hand the apparent porosity is increase after one month and decrease after one day."

	2023	Journal of Chemical Health Risks
"To reduce environmental biohazards, technicians should be educated with safe biological waste disposal procedures and dental material recycling. The best and most suitable preference treatment for these individuals to replace their missing teeth with improved aesthetics is thought to be aesthetic removable partial dentures, or RPDs. The clasp assemblies' display was one of the main issues with RPDs. Acetal resins have superior dimensional stability and reduced creep at higher pressing temperatures compared to nylon. An in vitro study found that acetal occlusal rests can support distal-extension RPDs for up to three years. Various scientific investigations have experimented with numerous approaches to recycle and reuse the resources they use on every day. In this article made removable partial denture from re- injected acetal resin, constructed the restorations according to manufacturer instructions and collected the reused acetal resin by cutting sprue injected acetal by using a cuter. The result of this study that found the acetal resin can be re-injected and reused in any case without any problems."

	2023	Tikrit Journal for Dental Sciences
"Studies in a variety of scientific disciplines have experimented with various techniques for recycling and reusing the materials they utilize on a regular basis, in this study suggest to re cycling waste of acetal resin. Purpose: The purpose of this study was to assess and compare the color change of re-injection acetal resin with different percentages or several times. Material and Methods: Specimens were prepared with dimensions (20±1 mm in diameter x 0.5 mm in thickness) for color stability test and injection according to the manufacture’s instruction for acetal resin as denture base materials and aesthetic clasp. The first group represent control group with (100% New) and other five groups as experimental groups (group II, group III, and group III) with different percentages between new acetal materials and old acetal materials, while two last groups with several times (group IV and group V) only used old acetal materials. Preparation the ratio between the new material with the old material according to pilot study and the best ratio in this study is 25% new acetal material and 75% old acetal material (group II). The old material is preparation by acetal sprue is collected and cutting by cutter and re-injection with new acetal resin. Results: Statistically non-significant difference in color change in re-injection acetal resin, when comparing the control group with mean (1.046±0.094) and re-injection groups with means respectively (1.040 ±0.076,0.942±0.115,0.993±0.137, 0.978±0.060, and 0.970±0.098). Conclusion: Color change was statistically non-significant differences between all studied groups."

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Syllabuses

Lectures

Research

Assessment the retentive force and XRD analysis on the recycling esthetic thermoplastic acetal clasps

Recycling acetal resin as material for dental

Esthetic Removable Partial Dentures Constructed by Recycling Acetal Resin (Case Report)

Color Stability of Re-Injection Acetal Resin with Different Percentages or Several Times