Amer A. Taqa's Books

Extraction of Pure Ketamine Powder and Study their Analgesic Effect as a Gel on Mice Using a Hot – Plate Test

By: Amer Taqa,Banan N. Alhussary,Ghada A. Taqa

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Extraction of Pure Ketamine Powder and Study their Analgesic Effect as a Gel on Mice Using a Hot – Plate Test

By: Amer Taqa,Banan N. Alhussary,Ghada A. Taqa

Scientific Essay from the year 2012 in the subject Chemistry - Other, grade: 3, University of Mosul, course: Dental Chemistry, language: English, abstract: The present study was undertaken to extract ketamine powder from ketamine hydrochloride by precipitate ketamine. After that we examine the purity of this powder by infra-red (FTIR) and ultra-violet(UV) spectroscopy. ketamine gel in different concentrations was prepared ( 0.5 , 1 , 5 , 10 , 15 )% to evaluate the antinociceptive activity. ketamine powder was seen is pure and this show in infra-red and ultra-violet scanner. Ketamine gel at concentrations 0.5, 1, 5, 10,15) % produce antinociceptive in mice (5.6±2.2) (4.4±2.0) (8.2±4.3) (10.6±5.2) (8±2.1) second after 2 min respectively by using a hot plate test in comparison with control(2.4±2). The percentage of maximum possible effect (MPE) increased from (9.9) % in control group to (23.3) (18.3) (34.2) (44.2) (33.3)% respectively according to the concentrations of ketamine gel after 2 min . Purification of ketamine powder from ketamine solution and use as a gel to could be of value relief pain by topical application.

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GRIN Verlag

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ISBN 10

3656375429

ISBN 13

9783656375425

Natural Stain as a Substitute of Synthetic Stain

By: Amer A. Taqa,Nadira Hatim,Nashwah Azeez

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Natural Stain as a Substitute of Synthetic Stain

By: Amer A. Taqa,Nadira Hatim,Nashwah Azeez

Research Paper (postgraduate) from the year 2012 in the subject Medicine - Dentistry, grade: 3, University of Mosul, language: English, abstract: Background and Objectives: Polymethyl methacrylate (PMMA) is currently the material of choice for denture base fabrication, that it has the advantages of good pigment wettability, high gloss and so on. Uses of natural stains (amaranth and vanilla) cheap and available in our country instead of the synthetic stains with heat cure acrylic resin denture base material for matching with natural human gingiva. Materials and Methods: Ninety samples were prepared of pink heat cure acrylic resin VertexTM material, fifteen samples with natural additives and seventy five samples with synthetic Vertex acrylic stainTM. The color of samples and gingival color of 24 healthy young participate were measured by Vita Easyshade device then compared between them. Statistical analysis was done by special designed program prepared for this study in Mat lab program 2010 that calculate the color difference between all the measurements that appeared only the (ΔE) that ≤ 6.8. Results: Results showed that (ΔE) ≤ 6.8 between some of natural and synthetic stains matched in relation to color of patients' gingiva, and some natural stains matched the color of the patients' gingiva. Conclusions: The results approved can be using the natural stains vanilla and amaranth instead of the synthetic Vertex acrylic stains that is clinically acceptable compared in relation to patients. Key Words: Natural stains, Vanilla, Amaranth, PMMA.

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GRIN Verlag

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ISBN 10

3656374279

ISBN 13

9783656374275

Evaluation of Retentive Ability and Some Properties of Modified Denture Adhesive Materials

By: Amer A. Taqa,Hala Khuder Ali,Munter N. Kazanji

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Evaluation of Retentive Ability and Some Properties of Modified Denture Adhesive Materials

By: Amer A. Taqa,Hala Khuder Ali,Munter N. Kazanji

Research Paper (postgraduate) from the year 2010 in the subject Medicine - Dentistry, University of Mosul (Dental college), language: English, abstract: Aims: To evaluate pH, viscosity and retentive ability of modified adhesive materials and compared it with commercially available adhesive materials. Materials and Methods: The pH–value of 0.25% denture adhesive materials were determined using pH meter. The viscosity was determined by Ostwald viscometer (Aldrich Company). The retentive ability was measured by specially manufactured reten-tion testing machine using an acrylic resin disc samples which have 6cm diameter and 3mm thickness prepared from a special mold. Results: The findings of the present study showed that the "Bonyplus" gave the highest pH values of all materials tested. Also, showed that the "CMC” gave the highest vis-cosity values, while "Bonyplus" gave the lowest one. The "CMC" gave the highest retention while the "Distilled water" gave the lowest one. Conclusions: All denture adhesive materials tested have a pH equal to that of neutral. The viscosity test showed that the newly prepared materials have a higher vis-cosity than commercial denture adhesive materials. The retention test showed that the newly prepared materials have a higher efficiency than commercial denture adhesive materials. Key Words: Retentive ability, Properties, denture, adhesive material.

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GRIN Verlag

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ISBN 10

3656365997

ISBN 13

9783656365990

The Effect of Newly Prepared Cleansing Agent on The Surface Roughness and Tensile Strength of Highly Impact Acrylic Denture Base Material

By: Amer Taqa

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The Effect of Newly Prepared Cleansing Agent on The Surface Roughness and Tensile Strength of Highly Impact Acrylic Denture Base Material

By: Amer Taqa

Research Paper (postgraduate) from the year 2012 in the subject Chemistry - Other, grade: 3, , language: English, abstract: Aims: To evaluate the effect of two prepared and commercial solution on surface roughness and tensile strength of highly impact acrylic denture base material Materials and Methods: The total number of specimens were one hundred and fifty. They were prepared from highly impact acrylic and subdivided into five groups for each solution (EDTA, Soda+H2O2, Lacalut, Corega and distilled water). Two laboratory tests were used for this research. Surface Roughness and tensile strength test. The surface roughness test specimens were constructed with dimensions (10×10×2±0.03mm) (length, width, and thickness respectively). According to ADA specification no.12 the tensile test specimens were constructed with dimensions 90×10×3±0.03mm (length, width, and thickness respectively). The immersion periods in this research are (2 day, 7 day and one month). ANOVA and Duncan multiple range test were used. The statistical results were considered significant at p ≤ 0.05. Results: the results showed that (soda+H2O2) has no significant change on the surface roughness and tensile strength of highly impact acrylic denture base material in (2d ay, 7 day, and 1 month) conclusion: (soda+H2O2) has the lowest effect on the surface roughness and tensile strength of highly impact acrylic denture base material in (2 day, 7 day, and 1 month) Key words: denture cleanser, highly impact, lacalut

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ISBN 10

3656390126

ISBN 13

9783656390121

Stainless steal orthodotic brackets recycling (using micro–etcher)

By: Amer A. Taqa,Hussain A. Obaidi,Omar H. Al-Luazy

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Stainless steal orthodotic brackets recycling (using micro–etcher)

By: Amer A. Taqa,Hussain A. Obaidi,Omar H. Al-Luazy

Research Paper (postgraduate) from the year 2007 in the subject Medicine - Dentistry, University of Mosul (Dental college), language: English, abstract: Aims: To evaluate the effects of the micro–etching procedure on the bracket’s slot and base parameters and on the tensile bond strength of the recycled brackets. Materials and Methods: The sample was 20 stainless brackets grouped into; control brackets group(10) and de–bonded brackets group(10). The de– bonded brackets reconditioned with micro–etcher. the data subjected to the statistical analysis at ≤ 0.05 significant level. Results: demonstrated that the use of micro–etcher for recycling the de–bonded brackets do not affect the bracket’s slot and base parameters whereas affected the bond strength of the recycled brackets. Conclusion: The micro–etcher (sand basting) is recommended for recycling the de–bonded stainless steal brackets and reuse them in orthodontic treatments Key words: Orthodontic brackets; micro-ether; recycling.

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ISBN 10

3656365962

ISBN 13

9783656365969

Preparation and modifying a new type of waxes

By: Amer Taqa,Nadira Hatim,Wafa Abbass

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Preparation and modifying a new type of waxes

By: Amer Taqa,Nadira Hatim,Wafa Abbass

Wissenschaftlicher Aufsatz aus dem Jahr 2006 im Fachbereich Medizin - Zahnmedizin, , Sprache: Deutsch, Abstract: To prepare and modify different wax compositions in order to find out the most suitable formula that has almost the same properties of dental modeling wax used in dentistry. Materials and Methods: Three groups of waxes (220 samples) with different compositions regarding its origin (Al–Dora refinery waxes, natural bees wax–North of Iraq, and commercially available Iraqi waxes), additives such as starch, sodium–carboxyl methylcellulose (Na–CMC), rosin, or nylon, and coloring agents were prepared. The samples were tested for their melting range, 21 samples only had a melting range that nearly coincides with that of the dental waxes such as Major and Cavex. Results: The resultant 21 samples were tested for their softening, trimming, penetration, residue materials and solubility. Only 4 samples showed properties that are closely similar to that of Major and Cavex wax. The results of melting point ranged from 69–80oC. Softening test showed that the samples which contain nylon, Na– CMC, or rosin were softened without adhering to the fingers. Trimming test showed that they were trimmed easily and clearly. Penetration test showed that, some samples had the similar measurements of Major and Cavex wax (0.6–0.9mm). Residue materials showed that all samples had no residue of wax materials on acrylic teeth after wax elimination procedure. All the prepared waxes were soluble in ether (acetone), and petroleum spirit (benzene). Conclusion: Six new modeling wax materials were prepared according to ADA specification No.24. Three of new wax materials consist of nylon (polystyrene 1.71–2.13%); the other two novel modeling waxes were fabricated by using additive materials (Na–CMC and rosin).

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ISBN 10

3656346941

ISBN 13

9783656346944

The Effect of Different Water Types on The Water Powder Ratio of Dental Gyp-sum Products

Water powder ratio

By: Amer Taqa,Nada Z. Mohammed,Alia'a W Alomari

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The Effect of Different Water Types on The Water Powder Ratio of Dental Gyp-sum Products

Water powder ratio

By: Amer Taqa,Nada Z. Mohammed,Alia'a W Alomari

Research Paper (postgraduate) from the year 2010 in the subject Medicine - Dentistry, grade: none, University of Mosul, language: English, abstract: Aims: To evaluate the effect of different water types on the water powder ratio of dental gypsum products. Materials and Methods: In this study five types of water (distilled, tab, slurry, de-ionized and well water) were used to be mixed with two types of dental gypsum products (plaster and stone). Results: Results showed a statistically significant difference at p ≤ 0.05 in water powder ratio of gyp-sum products when mixed with different types of water that used in this study . Conclusions: Water requirement of gypsum product varies in respect to the type of water used to be mixed with. The most pronounce decrease in water requirement of dental gypsum products was achieved with slurry water.

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3656365482

ISBN 13

9783656365488

Book's by Amer A. Taqa

Extraction of Pure Ketamine Powder and Study their Analgesic Effect as a Gel on Mice Using a Hot – Plate Test

Extraction of Pure Ketamine Powder and Study their Analgesic Effect as a Gel on Mice Using a Hot – Plate Test

Natural Stain as a Substitute of Synthetic Stain

Natural Stain as a Substitute of Synthetic Stain

Evaluation of Retentive Ability and Some Properties of Modified Denture Adhesive Materials

Evaluation of Retentive Ability and Some Properties of Modified Denture Adhesive Materials

The Effect of Newly Prepared Cleansing Agent on The Surface Roughness and Tensile Strength of Highly Impact Acrylic Denture Base Material

The Effect of Newly Prepared Cleansing Agent on The Surface Roughness and Tensile Strength of Highly Impact Acrylic Denture Base Material

Stainless steal orthodotic brackets recycling (using micro–etcher)

Stainless steal orthodotic brackets recycling (using micro–etcher)

Preparation and modifying a new type of waxes

Preparation and modifying a new type of waxes

The Effect of Different Water Types on The Water Powder Ratio of Dental Gyp-sum Products

The Effect of Different Water Types on The Water Powder Ratio of Dental Gyp-sum Products

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