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International Journal of Dentistry and Oral Science (IJDOS)

ISSN(p): | ISSN(e):2377-8075
Journal Papers (12) Details
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1 A Multidisciplinary Approach to the Functional and Esthetic Rehabilitation of a Patient with Bulimia Nervosa: A Clinical Report, Pantzari F1*, Kamposiora P2, Papavasiliou G2
Treatment of a patient with bulimia nervosa is a challenge for the dental clinician. The oral manifestations of bulimic behavior, which include sore and inflamed throat, swollen salivary glands, tooth wear and decay, require a multidisciplinary approach. This clinical report illustrates the treatment of a 22-year-old female patient with history of bulimia nervosa and dentition with extended signs of erosion. It included thorough diagnosis with the use of screening tool BITE (Bulimic Investigatory Test, Edinburgh) and initial evaluation of tooth wear with the TWI (Tooth Wear Index). Crown lengthening and prosthetic rehabilitation with all- ceramic restorations on anterior teeth and metal- ceramic single crowns on posterior teeth was the treatment of choice.
2 The Erosion Properties of Chlorine Dioxide and Hydrogen Peroxide on Bovine Teeth, Ablal MA1*, Jarad FD2, Adeyemi AA3
Objectives: The aim of this study was to assess the erosion potential of chlorine dioxide and hydrogen peroxide on bovine teeth. Methods: Sixty bovine crowns were ground and polished to give flat surfaces. The crowns were subjected to heavy staining cycles then equally divided into 3 treatment groups; chlorine dioxide (ClO2), hydrogen peroxide (H2O2), and deionised water (H2O). Specimens in each group were immersed in 150 ml of the treatment for seven 2 min cycle in addition to an extra 30 min cycle. Specimens were gently dried after each 2 min cycle to take quantitative light-induced fluorescence (QLF) images while non- contact light profilometry (NCLP) scans were performed at the end of the seven 2 min and the extra 30 min cycles. Results: ClO2 specimens showed a significant increase in %?F only after the first 2 min cycle (p < 0.05); however, a significant increase in %?F within H2O2 specimens was found at the end of the seven recommended treatment cycles (p < 0.05). Conclusion: Chlorine dioxide does cause enamel erosion but to a lesser extent than that caused by hydrogen peroxide.
3 The Effect of Fluoride on Beta-Titanium Orthodontic Wire's Surface Texture and Friction Resistance, Abbassy MA1,2, Bakry AS3,4*
Objectives: The aim of this study is to investigate the effect of fluoride application on the surface properties and frictional resistance of two types of orthodontic archwires. Materials and Methods: A total of sixty stainless-steel, and beta-titanium orthodontic archwires in-addition to fifty ceramic brackets were examined in-vitro and in-situ. The friction resistance of all wires with ceramic brackets before/after topical fluoride application were examined in-vitro and in-situ. Moreover, surface properties of the tested wires before/after fluoride application and before/after friction test were examined by scanning electron microscope (SEM). Paired t-test and Dunnett t-test were used to compare frictional resistance of the stainless-steel wires to the beta titanium wires as-received, in-vitro and in-situ (p? 0.05). Results: Beta-titanium wires recorded significant high friction resistance when compared to stainless-steel wires. Fluoride application did not significantly affect the friction resistance of the tested wires. SEM observation revealed the roughness of as-received beta-titanium wires and the deterioration of its surface texture after fluoride application in-vitro and in-situ. Conclusion: Beta-titanium wires recorded high friction resistance when compared to stainlesssteel wires under the asreceived, in-vitro and in-situ conditions, moreover, fluoride application did not affect friction resistance of beta-titanium wires while it affected its surface properties.
4 Orthopedic Treatment of Maxillary Expansion: A Review of the Literature, Sylvia Ng#, Minjie Li#, Yanqi Yang*
Transverse maxillary deficiency, no matter in adolescents or in adults, is frequently seen in the patients seeking orthodontic treatment. The treatment goal of detaching the midpalatal suture can be achieved using an expansion device. In present article we give a review on various palatal expansion appliances and treatment protocol. A comprehensive search of the literatures was performed to observe the regime of different maxillary expansion appliances and therapies.
5 Cleaning Effectiveness of EndoActivator Irrigation After Single-File and Multi-File Instrumentation Systems, Salman MI*
Objective: To compare cleaning effectiveness of two reciprocating single-file systems with ProTaper rotary instruments after one minute EndoActivator irrigation. Methods: Thirty three extracted human maxillary and mandibular single rooted human teeth were divided into three groups. Canals were prepared to the same apical size (25/.08) using Reciproc (Group I), WaveOne (Group II) or F2 ProTaper (Group III). Then all canals received additional one minute activation by EndoActivator size 25/.04. Roots were split and examined with SEM, the presence of debris and smear layer on coronal, middle and apical thirds was evaluated. Data were analyzed with the Kruskal-Wallis and Man-Whitney tests. Results: One minute EndoActivator irrigation after ProTaper instrumentation achieved significantly better results (P < 0.05) than after instrumentation with either WaveOne or Reciproc. No significant differences were obtained comparing instrumentation with Reciproc or WaveOne (P > 0.05). Conclusion: EndoActivator irrigation after a multi-file rotary instrumentation resulted in less debris and smear layer than single-file rotary systems.
6 Light Emitting Diode in Comparison to Halogen Curing Technology: Microshear Bond Strength of Dental Composite Resin Restorative Material, Hammouda IM1,2*, Beyari MM3
The aim of this study was to compare the micro-shear bond strength of composite resin cured with halogen visible light and blue light emitting diode curing units. Flat enamel surfaces of 50 segments of teeth were prepared. 50 cylindrical composite resin specimens were bonded to the prepared teeth segments. Specimens were divided into 5 groups, three groups were cured for 10, 20 and 40 seconds using blue light emitting diode and 2 groups were cured for 20 and 40 seconds using halogen light. Specimens were submitted to micro-shear bond test at 1mm / min cross-head speed. Mean micro-shear bond strengths were analyzed by analysis of variance (One-way ANOVA) and Tukey's test at P
7 Erupted Complex Odontoma Mimicking a Mandibular Second Molar, Almeida LE1*, Andrade MO2, de Oliveira Filho MA2, Trevilatto PC3, Doetzer AD3
Complex odontoma (CO) is considered one of the most common odontogenic lesions, composed by a miscellaneous of dental tissue such as enamel, dentin, pulp and sometimes cementum. They may interfere with the eruption of an associated tooth, being more prevalent in the posterior mandible. CO has been rarely reported as erupted, being considered an intraosseous lesion. This is a case report of a 17-year-old male with a benign fibro-osseous lesion consistent with CO that was located at the left second molar region, above the crown of the impacted mandibular second molar tooth. The lesion was surgically removed, and the tooth had to be extracted, since there was no indication that it could erupt naturally or with orthodontic traction. The histopathological examination confirmed the diagnosis of CO and after 6 months complete bone formation was observed radiographically. An early diagnosis will provide a better treatment option, avoiding tooth extraction or a more damaging surgery.
8 Interleukin-22 (IL-22) Gingival Gene Expression and GCF Concentration in Periodontal Health and Disease, Amini Behbahani A1, Sattari M2*, Mofid R3, Ganji A4
IL-22 is a cytokine that is assumed to improve anti-microbial defense of epidermal and epithelial cells and the cells of gastrointestinal and respiratory systems. With respect to absence of enough relevant articles in this regard the aim of this study was to evaluate the correlation between IL-22 gene expression in gingival tissues as well as its concentration in GCF and periodontal diseases. Gingival samples obtained from 60 patients of three different groups (healthy, gingivitis and chronic periodontitis) and used for evaluation. Expression of IL-22 mRNA was measured by Real-time PCR and its concentration in GCF was determined by ELISA. In none of the tissue samples, mRNA of IL-22 was detected; However IL-22 concentration was significantly higher in periodontitis in comparison to other groups and in gingivitis was higher than the normal gingiva. There was no relationship between concentration of IL-22 in GCF and the extent and severity of chronic periodontitis. With respect to the results of this study, probable systemic production of IL-22 in response to periodontopathic bacteria is suspected and it is assumed to counteract with LPS of these bacteria and protect periodontal tissues against adverse effects that results from stimulation of different cells and molecules of immune system by LPS.
9 Antimicrobial Effect of Different Root Canal Medicaments on Enterococcus Faecalis : in vitro Comparative Study, Asmaa MM1, Alaa A. El-Agamy2, Ibtesam K.Afifi1,3*.
Introduction: Enterococcus faecalis (E. faecalis) is a microorganism commonly detected in persistent endodontic infections. Eradication of this organism from an infected root canal remains a significant clinical challenge for modern endodontic treatment. So, this in vitro study was conducted to compare antimicrobial effect of some root canal medicaments on E. faecalis. Materials/Methods: A total of 50 E. faecalis strains (49 strains were selected randomly from positive cultures together with a standard E. faecalis strain ATCC 29212) were used in the study. Inoculum for each bacterial strain was prepared in a turbidity of 0.5 on McFarland scale. The prepared discs of the three intracanal medicaments; chlorhexidine, diapex and diclofenac; together with readymade discs of amoxicillin and doxycycline were distributed on blood agar and Mueller-Hinton agar plates inoculated with an E. faecalis suspension previously prepared. Antimicrobial activity was assessed by measuring the diameters of the zones of growth inhibition surround the discs after incubation at 37°C for 24 hours and then after 48 hours. Results: All strains (100%) were sensitive to chlorhexidine even though strains that showed resistance to one or both of antibiotic used (amoxicillin, doxycycline). On the other hand, all strains (100%) were resistant to diapex and diclofenac even standard strain. Sixty eight percent of the tested strains were sensitive to doxycycline and 44% of them were sensitive to amoxicillin. Conclusion: Under the conditions of this study, chlorhexidine is very effective against E. faecalis and can be considered as the most powerful root canal medicament compared to other intracanal medicaments tested. Controversially, no zones of inhibition were detected around diapex and diclofenac.
10 Cytotoxic Effect of Chitosan-H, Resveratrol, ?-Carotene and Propolis and their Chitosan Hydrogels on Balb/C Mouse 3T3 Fibroblast Cells, S R Grobler1*, A Olivier1, T V Perchyonok2, D Moodley1, Y Osman1.
Background/purposes: The beneficial effect (bond strength and longevity) of the addition of different chitosan/antioxidant hydrogels to dental restoratives was reported. However, it still needs to be verified whether their presence would not damage the pulp cells. Therefore, the purpose of this study was to determine the relative cytotoxic effect of resveratrol, propolis and ?-carotene in relation to their respective chitosan/antioxidant hydrogels on mouse Balb/c mouse 3T3 fibroblast cells. Materials and Methods: The mentioned hydrogels were prepared by the dispersion of the corresponding components in glycerol and acetic acid with the addition of the chitosan polymer. The cell survival rate was determined over a 24 hour period according to the standard MTT assay. Results and Conclusion: The Kruskal-Wallis Multiple-Comparison Test and Bonferroni test showed significant differences in the cell survival rates (p
11 Human Periodontal Ligament Cells Response to Commercially Available Calcium Hydroxide Pastes, Fahd Alsalleeh1,2, Lane. Stephenson1, Nickolas. Lyons1, Ashley. Young1, Stetson. Williams1.
Several studies have shown that calcium hydroxidebased medicaments have a cytotoxic effect on human cells. The purpose of this study was to evaluate the cytoxicity of several calcium hydroxideproducts on periodontal ligament (PDL) cells. Calcium hydroxide powder (Avantor Performance Materials Inc.), Calasept® (Nordiska Dental AB), Metapaste® (Meta Biomed Co., Ltd.), Vitapex® (Neo Dental International Inc.), Ultracal® (Ultradent Products, Inc.), and Pulpdent® (Pulpdent Corporation) products were tested. PDL cells were exposed to various concentrations of calcium hydroxidefrom each product (1.0, 0.5, 0.25, and 0.125 mg/mL). Cell viability was measured after 24 h and 48 h by Cell Proliferation Assay. All materials tested had a more toxic effect on PDL cells after 48 h.At 24 and 48 h, Metapaste® was the most toxic regardless of concentrations used. Products with a1.0 and 0.5 mg/mL concentration hadstatistically significant more cytotoxic effectswhen compared to the negative control. Pure calcium hydroxide and Calacept® induced 35% cell death at a 1 mg/mL concentration and 15-20% cell death at 0.5, 0.25, and 0.125 mg/mL after 24 h. Pulpdent® and Ultracal® induced 30-35% cell death at a 1 mg/mL concentration and its effect diminished at 0.25 and 0.125 mg/mL at 24 h. The Vitapex® preparation induced 20% PDL cell death at 24 h regardless of the concentration and was the least toxic significantly at 1 mg/mL compared to other brands, except Pulpdent®, at the same concentration at 24 h.All calcium hydroxideproducts showed evidence of cytoxicity on PDL cells, with Metapaste being the most cytotoxic. The cytotoxicity was related to concentration and exposure time. Pulpdent® and Ultracal® had excellent biocompatibility at lower concentrations.
12 Effectiveness of Pre-and Post-Archwire Insertion Acetaminophen Vs. Non-Pharmacologic Management of Pain During Orthodontic Tooth Movement, Nicole D. Teifer1 , Larry J. Oesterle2*, W. Craig Shellhart3, Sheldon M. Newman4
Introduction: Some patients undergoing orthodontic treatment perceive discomfort at levels that may negatively impact their feelings about their treatment and decrease their compliance. The purpose of this investigation was to study the effectiveness of either pre- or post-archwire insertion acetaminophen versus a placebo or telephone call in controlling discomfort. Materials/Methods: A total of 120 patients, aged 12 to 18 years, undergoing fixed comprehensive orthodontic treatment were randomly assigned to one of six experimental groups: (1) 600 mg acetaminophen pre-treatment, 600 mg acetaminophen post-treatment; (2) lactose placebo pre-treatment, 600 mg acetaminophen post-treatment; (3) 600 mg acetaminophen pre-treatment, lactose placebo post-treatment; (4) lactose placebo pre-treatment and post-treatment; (5) courtesy phone call pre-treatment, courtesy phone call posttreatment; (6) no courtesy phone call pre-treatment or post-treatment. Medication group subjects were instructed to take the oral medications at prescribed time intervals before and after initial archwire insertion. The patient’s level of discomfort was assessed using a 100mm visual analogue scale (VAS) approximately 1 hour prior to initial archwire placement and at 3, 7, 19, 24, 31, and 48 hours after archwire placement. Results: The peak level of mild to moderate discomfort occurred 19 hours after archwire placement and the differences in VAS scores between the six groups and gender were not statistically significant. Conclusions: All of the interventions were equally effective in controlling the pain following initial orthodontic appliance placement,indicating a relatively low level of pain.