Table of content

Tikrit Journal for Dental Sciences

مجلة تكريت لعلوم طب الاسنان

ISSN: 20731213
Publisher: Tikrit University
Faculty: Dentistry
Language: English

This journal is Open Access

About

Precise semi-annual scientific journal concerned with research publishing related to dental sciences

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Contact info

Phone Number : 07481411928
e-Mail : tikjdentsci@yahoo.com

Table of content: 2017 volume:5 issue:1

Article
A Cross Sectional Study of Stress and Anxiety among Dental Students at Ajman University

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Abstract

This study was conducted to investigate and analyze the level of stress & anxiety among dental clinical students in Ajman University of both campuses. A descriptive cross sectional study, questionnaire based study performed on students of both campuses of dental college in Ajman University. The study was conducted on dental students of 4th& 5th year, a total number of 307 participants with collected answered questionnaires. A high level of stress is mainly scored in both 4th& 5th years due to examinations& assigned work. Medical& dental clinical students are expressed with high stress& anxiety levels due to the environment of the work& study of these colleges& the psychology of the students attending to these colleges.

Keywords

Stress --- anxiety --- dental student --- dentistry --- 4th year --- 5th year --- female --- male --- student


Article
Clinical Study to Evaluate the Prevalence of TMD Before and After Delivery of Complete Denture

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Abstract

Temporomandibular disorder (TMD) is a broad term that encompasses number of clinical problems including the temporomandibular joints, the masticatory musculature and related structures, or both. The etiology of TMD is ambiguous since the signs and symptoms which exist in patients with natural teeth may also being observed in edentulous patients. Thus, TMD is a multifactorial problem with varying symptoms combinations and rates. Relationship between removable complete dentures and tempromandibular joint disorder in different gender and age groups. A total of 30 patients (15 female and 15 male) who submitted to Prosthodontics Department, College of Dentistry, Al-Mustansiriyah University to make a new complete denture. The age of participants ranges from (40-80) years with the mean age (65.8) years. Two clinical examiners conducted the patient’s examination; the first examiner takes on a questionnaire to identify the TMD symptoms signs and. Clinical examination of the patients was assessed through part I, II of research diagnostic criteria pre and post one and two months of applying the prosthesis. The clinical evaluation of prosthesis done by the second clinical examiner related to (retention, stability, fitness, occlusion and centric relation) was evaluated twice at predetermined intervals of 1 and 2 months after construction and delivery of denture. Evaluation performed by using Dawson's bimanual technique and recorded within clinical case sheet for complete denture records. The present study shows that the highest frequency of TMD obtained in age group of 70-80 years old followed by age group of 60- 69 years old at all intervals, internal derangement (ID frequency) significantly higher in females than male patients (p=0.02). There is significant statistical difference regarding the Myofacial pain dysfunction (MPD) frequency according to the time of using the dentures, those patients with Diabetes Mellitus (DM) formed the highest percentage (39.1%) of those whom presented with MPD followed by those with Hypertension (HT) (32%) and those with history of HT and DM represent (17.4%) only The results also illustrated that prosthesis properties (retention, stability, fitness, occlusion and centric relation) show significant relation with TMDs improvement post one and two months. Most patients with complete denture perceived improvement in the sign and symptoms of TMDs.


Article
Effect of Different Metal Bonding Agents on Shear Bond Strength of Ceramic to Direct Metal Laser Sintering

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Abstract

Introduction: laser sinter Cobalt Chromium metal replacing traditional casting processes of dental alloys for metal ceramic restorations, appropriate bonding of ceramic to metal is an important factor for long survival time. Twenty laser sinter cubic metal 10 mm for each sides was fabricated by software designing and CADCAM direct metal laser sintering technique. The twenty cubics were classified according to the type of metal to ceramic bonding agents into two groups (n=10), Ceram bond apply for group A and Crea alloy bond for group B. Samples fabricated using custom made silicon index was used to act as standardized mold for metal bond application and porcelain buildup. Instron with chisel indenter and special holding device were involve to measure the strength of bond for ceramic to laser sinter metal. The mean shear bond load of group A (688.8N) was significantly higher than that of group B (303.2N). Application of Ceram bond to metal laser sinter produces more bond strength when compare to usage of Crea bond material.

Keywords

Ceramic laser --- Bonding


Article
Enamel Hypoplasia among Tikrit City School Children Aged 6 Years to 13 Years Old

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Abstract

Enamel hypoplasia: its deficiency could be occurring when the enamel of the tooth does not form completely; this is may be due to many diseases or malnutrition. Enamel hypoplasia could be appear as horizontal lines or chain of grooves or pits over the outer surface of the tooth. The purpose of this current study was to find out the prevalence of enamel hypoplasia for the permanent and deciduous teeth in primary school children in Tikrit city, because children with enamel hypoplasia can suffer from cosmetic issues, tooth sensitivity and increased risk of dental caries. This current study is cross-sectional study was conducted through a clinical examination of teeth among 720 children of age rang (6 to 13) years enrolled in primary public schools of Tikrit city; they were accepted to participate in study after the aim of study was explained. The prevalence of enamel hypoplasia was studied in relation to age and gender. Diagnosis of enamel hypoplasia takes place by well trained dentist. The prevalence of enamel hypoplasia was founded to (6.2%); boys more affected than girls with odds ratio 1.03 and there was no statistically significant differences. The anterior teeth were the most affected teeth with enamel hypoplasia specially the upper permanent central incisor (2.9%). Developmental enamel hypoplasia has a high level of importance because of being predictors of dental caries. Children suffered from enamel hypoplasia require a preventive intervention as a priority and early treatment.


Article
Evaluation of Canal Transportation Using Single File Rotary Systems, One Shape, Waveone GOLD and Reciproc in Simulated Curved Canals (in Vitro Study)

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Abstract

Objectives maintaining root canal anatomy through minimal canal transportation by using Rotary single file systems: One Shape, Wave One Gold and Reciproc systems used in simulated artificial curved root canals. Materials and Methods 30 simulated curved root canals in clear resin blocks were used in this study and divided into three groups containing 10 samples each: group (1) represented canals instrumented with Rotary One Shape files, group (2) canals instrumented with reciprocating Wave One Gold files while Group (3) canals were prepared with Reciproc files. All canals were imaged pre- and postinstrumentation at three levels, 2,3 and 5 mm apically and compared using Adobe Photoshop software program. Amount of transportation were assessed. The three groups were compared with ANOVA and LSD statistic tests Results the mean transportation at 3mm level of the canal had no significant difference among all groups, all shown transportation. At 2mm, and 5mm levels there were significant difference between groups, G2 shown the least transportation among all groups. Conclusions Within the limits of this study, the canal preparation with Wave One Gold files showed lesser transportation than One Shape and Reciproc files.

Keywords

Root canal --- Rotary --- curve


Article
Gingivitis and Toothbrush Contamination

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Abstract

Oral diseases can be controlled by reducing the microbial count in the oral cavity and this can be achieved by maintaining proper oral hygiene. Toothbrushes are the most commonly used oral hygiene aid to prevent the dental and other oral diseases. To evaluate the association between gingivitis and contamination statues of toothbrush, effectiveness of disinfectants and duration of using the toothbrushes. The study was conducted on 63 patients and their toothbrushes. Gingival status of participants were evaluated by measuring the gingival index then the patients were asked about the duration of using his/her toothbrush and asked to bring his toothbrush for assessment of contamination status with regards to(Staphylococcus aureus) as well as for evaluation of efficacy of two types of disinfectants. The toothbrush samples were collected and subjected to quantitative assay of microorganisms. The efficacy of chlorhexidine (0.2%) and sodium hypochloride (1%) were assessed at 1, 2 and 3 hours. The data were compared by using student T test, ANOVA and LCD test and t- test. The gingival in dex was higher with patients using the toothbrushes for longer duration, the S.aureus was isolated from all tooth brushes as well as the degree of contamination was increased with increased the duration of use. The chlorhexidine and sodium hypochloride were effective in decontamination of toothbrushes but their efficacy was reduced with increasing the period of using the toothbrush. The gingivitis might be exacerbated by prolong using of toothbrushes, contamination correlated directly with duration of using the toothbrushes and efficacy of disinfectant inversely correlated to duration of use.


Article
Impact of Sorts Disinfection and Cleansing Material on Hardness of Different Types of Denture Base Material

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Abstract

Dentist, dental technician and assistants are faced a several kinds of microorganisms during work like bacteria, fungi and viruses .So, we can prevent cross contamination by using either chemical or mechanical disinfection. The aim of the research was to measure the effect of different types of chemical disinfection on the hardness of two types of denture base resin, heat activated acrylic and nylon (flexible). A total number of 80 denture resin specimens (40 specimens from heat activated acrylic and 40 specimens from flexible resin) were prepared. Each type of specimen was subdivided into 4 groups. Three groups were divided according to the type of denture disinfectants (1%sodium hypochlorite, 1% povidine/iodine, Kin solution) and the fourth which considered as control group was immersed in distilled water. All specimens were immersed in testing solution for 90 minutes at 370C. The hardness of the specimens before and after immersion was tested using Shore D machine. Our study showed that the mean value of hardness test for poly methyl methacrylate higher than polyamide and there need aid nonsignificant Contrast in the resistance of the surface to scratches and indentation between diverse sorts of thermoplastic resin after using chemical disinfectant and denture cleansers with comparison with control group for each type of denture base resin. The resistance to indentation of different types of denture base would not affected by short time immersion in chemical

Keywords

Ceramic laser --- Bonding.


Article
Salivary and Serum Levels of Both Uric Acid and C-Reactive Protein (CRP) Biomarkers in Patients with Behçet's Disease

Authors: Noor H. Mohammad
Pages: 143-149
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Abstract

Behçet's disease (BD) is a systemic vasculitis identified by recurrent oral and genital ulcerations, skin inflammations and uveitis, with unknown etiology. This study had been designed to assess the level of salivary and serum uric acid (UA) and C - reactive protein (CRP) markers in BD patients as activity markers and to explore their relations in disease existence. Fifty BD patients :( 32 males and 18 females) with mean age (35.3 ± 7.6) years and fifty healthy subjects (30 males and 20 females) with mean age (34.8± 9.1) years were involved in this study that extend during the period of (2014-2016). All of patients and healthy subjects were analyzed for UA by (colorimetric spectrophotometric assay that based on oxidation of UA by uricase enzyme to allantoin) and CRP by (qualitative analysis: antigen-antibody interaction Latex agglutination test) in both saliva and serum. Data was analyzed using descriptive statistics, t-test, P (ANOVA) test, Chi-square (2) test, and Pearson’s linear correlation coefficient statistical analyses. Results of this study show that salivary uric acid was significantly elevated in BD patients than in healthy subjects. (P<0.001). Although serum UA was higher in patients than the healthy subjects but statistically not significant. (P=0.57). On the other hand, out of fifty patients there were thirteen patients (26%) significantly expressed CRP positive in their serum and saliva. The results of this study revealed that UA can act as prooxidant (pro inflammatory) marker and CRP as inflammatory marker that could be related to impaired endothelial


Article
Serum and Non- Stimulated Whole Salivary 25-Hydroxy Vitamin D in Patients with Burning Mouth Syndrome

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Abstract

The term burning mouth syndrome refers to burning sensation of the mouth that has no detectable cause. The symptoms do not follow specific anatomic pathway, also no known oral lesions or systemic disorders explain these symptoms. In addition to that no characteristic laboratory findings are detected. Evaluation of serum and non- stimulated whole salivary 25-Hydroxy vitamin D concentrations in subjects with and without burning mouth syndrome. The study was carried out on 57 participants (28 with burning mouth syndrome and 29 without burning mouth syndrome). Non- stimulated whole saliva samples were obtained by expectoration. About 5 ml of blood were drown from each participant. The serum and salivary 25-Hydroxy vitamin D concentrations were measured by ELISA technology. No significant difference was detected between case and control groups in serum 25-hydroxy vitamin D concentration (120ng/ml and114ng/ml respectively) and in non- stimulated whole saliva 25-hydroxy vitamin D concentration (0.6ng/ml and 0.78ng/ml respectively). There is no relationship between burning mouth syndrome and non- stimulated whole saliva or serum 25- hydroxy vitamin D concentration.

Keywords

Table of content: volume:5 issue:1