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Article
An in Vitro Study to Evaluate the Effect of Two Disinfectant Solutions on Wetta-bility of Three Elastomeric Impression Materials

Author: Sawsan H Al–Jubori
Journal: Al-Rafidain Dental Journal مجلة الرافدين لطب الأسنان ISSN: 18121217 Year: 2011 Volume: 11 Issue: 18 Pages: 357-363
Publisher: Mosul University جامعة الموصل

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Abstract

Aims: To evaluate the effect of two types of disinfectant solutions(2% alkaline glutaraldehyde, 1% sodium hypochlorite) in wettability of three types of elastomeric impression materials (light body) which are used in crown and bridge restorations at different times of immersion. Materials and meth-ods: Three types of elastomeric impression materials (light body) were formed on a flat acrylic resin block and allowed to set(five specimens of each impression material was done for each immersion time(15,30 and 60 minutes)of each disinfectant solution in addition to control groups). The wettability is indicated by measuring the contact angle of aqueous solution of CaSO4 on surface of cured impres-sion materials. Results: indicated no significant effect of immersion times on wettability of three types of impression materials. The hydrophilic type produce high wettability. Conclusions: The disinfectant solutions have different effects on each impression material. Sodium hypochlorite has the greatest ben-eficial effect on wettability.

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Article
Study of The Adherence of St. mutans on Bleached and Fluoridated Tooth Surfaces. (An In Vitro Study)

Author: Sawsan H Al-Jubori
Journal: Al-Rafidain Dental Journal مجلة الرافدين لطب الأسنان ISSN: 18121217 Year: 2013 Volume: 13 Issue: 21 Pages: 116-121
Publisher: Mosul University جامعة الموصل

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Abstract

Aims: To evaluate Streptococcus mutans adherence on bleached enamel surface with (7.5% hydrogen peroxide , 16% carbamide peroxide) with or without topical fluoride theraby. Materials and Meth-ods: Sixty specimens obtained from thirty maxillary premolars extracted for orthodontic reasons, cleaned, polished, and examined for any surface structural damage. The roots were discarded and crowns sectioned in two pieces (mesiodistaly) using diamond separating disc in low speed hand piece. The specimens randomly divided into six groups and exposed to one of the bleaching agents (7.5% hydrogen peroxide , 16% carbamide peroxide) with or without topical fluoride application. The nega-tive control group specimens stored in deionized water. The positive control group specimens stored in artificial saliva. Adherence of Streptococcus mutans count to enamel surfaces was determined bacte-riologically. The data analyzed statistically using one way ANOVA and Tukey test (p≤0.05). Results: there is significant increasing in Streptococcus mutans adherence on enamel surface after bleaching procedure, which was decreased significantly when used fluoride application technique after bleach-ing. Conclusions: Topical fluoride therapy has beneficial effect on reducing the Streptococcus mutans adherence on enamel surface after bleaching regimens which attributed in reducing the possibility of dental caries


Article
Cross arch and antero–posterior dimensional changes of impressions and stone casts at different storage times

Author: Sawsan H Al–Jubori
Journal: Al-Rafidain Dental Journal مجلة الرافدين لطب الأسنان ISSN: 18121217 Year: 2003 Volume: 3 Issue: 1 Pages: 74-81
Publisher: Mosul University جامعة الموصل

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Abstract

The aim of study is to evaluate the linear dimensional changes (cross arch, antero–posterior dimensions) of impressions and die stone casts of two brands of addition silicone impression materials (Express and President) for special master model using two–steps (putty–wash) technique, at different storage times before pouring of impression, by using of three dimensional measuring machine and to compare between the accuracy of the two brands of impression materials. The results indicated that a significant difference between the interabutment distances of impression and die stone casts. The Express impression materials produce the most accurate results. There is slightly increase in interabutment distances of stone casts. At one hour storage time there are the smallest dimensional changes of impressions and stone casts in relation to construction of complete–arch fixed partial denture.


Article
Examination of the particle’s shape, size and distribution of the commercial dental gypsum products

Authors: Lamia T Rejab --- Sawsan H Al–Jubori
Journal: Al-Rafidain Dental Journal مجلة الرافدين لطب الأسنان ISSN: 18121217 Year: 2003 Volume: 3 Issue: 2 Pages: 103-107
Publisher: Mosul University جامعة الموصل

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Abstract

Gypsum products used in dentistry are in the form of α and β calcium sulfate hemihydrate as dental stone and plaster. The aim of the study is examination of the particle’s shape, size and distribution of the different commercial dental gypsum products. The particle’s shape was examined microscopically with transmitted light microscope instead of reflected light microscope or electron microscope. Analysis of the particle’s size distribution and the measurement of the powder particle’s fineness was performed by sieving procedure using sieving machine. The data was collected and calculated and then compared with the ADA Specification No. 25 for gypsum products. The results showed that the microscopical examination with transmitted light microscope give clear accurate and precise image about the different shapes of the stone and plaster. The results of the analysis for particle’s size distribution showed that there is a difference in the distribution between the different tested commercial dental gypsum products and also showed that all products have particle’s size larger than the ADA Specification No. 25.


Article
Asymptomatic Faulty Endodontic Treatment ( Radiological and Clinical Assay)

Authors: Anas A Mohammad --- Sawsan H Al–Jubori --- Lamia T Rejab
Journal: Al-Rafidain Dental Journal مجلة الرافدين لطب الأسنان ISSN: 18121217 Year: 2007 Volume: 7 Issue: SpIss Pages: S35-S40
Publisher: Mosul University جامعة الموصل

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Abstract

Aim: The aim of this study is radiological assay of at least two years period of clinically asymptomatic faulty endodontic treatment among the patients sex and treated teeth location. Materials and Methods: A total of 447 individuals (20–60y age) from both sexes were selected, they had history of endodontic treatment for at least two years ago. They were clinically asymptomatic and radiographic examination showed they had faulty endodontic treatment. Radiographic examinations in this study was intraoral periapical projection, used bisecting angle technique, used dental x–ray machine, periapical film. Special chart was prepared for this study. The faulty endodontic treatments were radiographically categorized as under–filling, overfilling, missing root canal, perforations of the root canal, and fractured or separated instrument in the root canal. Statistically frequency distributions calculated. Chi–square test was used to calculate significance difference with the level of p < 0.05. Results: The results showed that the under–filling had the highest percentage of the faulty endodontic treatment and the females had a higher percentage than that of the males, and the posterior teeth had a higher percentage than that of the anterior teeth. Conclusion: Faulty endodontic treatment is not the direct cause of the signs and symptoms of endodontic treatment failure, there are no significant differences of the faulty endodontic treatment among the patients sex, but there is a significant difference among the location of the treated teeth.


Article
Bond Strength of Aluminum Oxide Surface Treatment on Sandwich Restoration

Authors: Maha A AL-Murad --- Sawsan H Al–Jubori --- Nadia H Hasan
Journal: Al-Rafidain Dental Journal مجلة الرافدين لطب الأسنان ISSN: 18121217 Year: 2012 Volume: 12 Issue: 19 Pages: 89-95
Publisher: Mosul University جامعة الموصل

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Abstract

Aims: The aim of this study is to evaluate the effect of aluminum oxide as a surface treatment on shear bond strength of etched and non-etched GIC for sandwich restoration with different types of tooth co-lored restorations .In addition, failure type was assessed. Materials and Methods: Sixty Teflon molds (5mm diameter and 4mm height) of a chemically cured GIC were prepared. They were divided into two main groups 1st control, 2 ed air-abraded with 50μm aluminum oxide particles. Both groups were sub divided into two subgroups 1st control, 2 ed etched with 37%phosphoric acid. Bonding material was applied to the treated surface of all groups and cured. The second split of Teflon mold (3mm di-ameter and 4mm height)was placed onto the prepared specimenEach subgroups (1st control, 2 nd etched with phosphoric acid) were farther subdivided into three subgroups which entrain filled as fal-low: 1st split filled with a tg microhybrid, in 2 ed split filled with tg fine glass, and in 3 rd split filled with Ceram X. Shear bond strength was measured by using Universal Testing Machine, and mode of failure examined by a stereomicroscope. Results: Anova test showed that there was a highly significant difference for all variables except acid etching effect. Aluminum oxide surface treatment displays supe-rior shear (2.280MPa). tg micro hybrid composite and Ceram X showed highest shear bond strength. Conclusions: Phosphoric acid etching did not improve shear value of sandwich restorations, while uses of aluminum oxide surface treatment, tg micro hybrid and Ceram X filling material gave an improve-ment on it. The failures were mainly cohesive within the GIC except tg fine glass was cohesive in fill-ing material itself.


Article
The incidence of tooth loss and restorations in Al–Shamsiat Village

Authors: Nadira A Hatim --- Ammar Kh Al–Nori --- Sawsan H Al–Jubori
Journal: Al-Rafidain Dental Journal مجلة الرافدين لطب الأسنان ISSN: 18121217 Year: 2004 Volume: 4 Issue: 4 Pages: 87-94
Publisher: Mosul University جامعة الموصل

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Abstract

The aim of this research is to investigate the incidence of tooth loss, distribution of tooth loss in the oral cavity, the incidence of smoking habits and its relation to tooth loss and to evaluate the motivation of patients to replace their missing teeth and their attitude toward the type of replacement, either fixed or removable in rural area (Al–Shamsiat village) in Ninevah Governorate. A sample of 500 individual aged 15– 70 years was selected randomly and examined using special chart prepared for this study. The results showed that 337 subjects were with partially missing of teeth. Three subjects (3.96%) with complete loss of teeth and the rest (160 subjects, 32%) were complete natural teeth. The study showed that there is no significant relationship between smoking and tooth loss. The motivation of patients was toward the type of prosthesis that are made mostly of removable acrylic type. A high percentage of population (64.86%) desire to replace their missing teeth in the village, which reflect the need of dental health, and dental treatment in the community.

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