Efficacy of intraligamentary anesthesia in maxillary first molar extraction.

Introduction: Infiltration anesthesia (IA) is the method to anaesthetize maxillary teeth successfully. In contrast, intraligamentary anesthesia (ILA) has been used as supplementary anesthesia during tooth extraction, particularly when regional block anesthesia has failed. In this study, we compare the efficacy of and patient satisfaction with ILA vs IA when extracting maxillary first molar teeth.

Development of a composite resin disclosing agent based on the understanding of tooth staining mechanisms.

Objectives: To characterize the surface composition of dental enamel and composite resin, assess the ability of dyes with different affinities to stain these surfaces, and use this information to develop a disclosing agent that stains composite resin more than dental enamel.

Methods: One hundred and ten sound extracted teeth were collected and 60 discs of composite resin, 9 mm diameter and 3 mm thick, were prepared. X-ray photoelectron spectroscopy (XPS) was employed to determine the elemental composition on the different surfaces.

Hydrogen peroxide whitens teeth by oxidizing the organic structure.

Objectives: The mechanism of tooth bleaching using peroxide oxidizers is not fully understood. It is unknown whether peroxide radicals make teeth whiter by deproteinizing, demineralizing, or oxidizing tooth tissues. This study was designed to define the mechanism of tooth bleaching and determine which of tooth enamel chemical components is/are affected by bleaching.

Regulation of enamel hardness by its crystallographic dimensions.

Enamel is a composite biomaterial comprising a minor organic matrix (~2%) and a hierarchically organized inorganic ultrastructure (~96-98%). Surprisingly, to date there is no available information in the literature regarding the possible role of the enamel ultrastructure on the nanoscale level in tooth macroscopic properties. Understanding this relationship is of special interest for restorative purposes in dentistry.

The role of enamel crystallography on tooth shade.

Objectives: Tooth shade is influenced by a combination of extrinsic-stains that are adsorbed to the enamel surface and by its intrinsic-shade resulting from the interaction of light with tooth structures. This study was designed to investigate how the variations in enamel ultrastructure may affect tooth optical properties.

Methods: One-hundred extracted teeth were collected from adult patients attending McGill-Undergraduate Dental Clinics.

Effect of oral diseases on mothers giving birth to preterm infants.

Objectives: To determine the association between preterm birth (PTB) and maternal oral diseases during pregnancy.

Subjects And Methods: This prospective study was performed by the neonatal and dental departments at Jordan University Hospital. The study included 100 women who gave birth to preterm singleton infants (born less than 37 complete weeks from last menstrual period) between January and July 2009.

New form of administering chlorhexidine for treatment of denture-induced stomatitis.

Background: The purpose of this study was to evaluate the release of chlorhexidine as an antifungal drug from doped self-cured poly (methyl methacrylate) (PMMA) acrylic resin and the effect of the drug released on the growth of Candida albicans.

Methods: Release of chlorhexidine was evaluated using liquid chromatography, and the effect of the drug on the growth of C. albicans was investigated microbiologically using a "well" technique on Saboraud culture medium inoculated with a resistant strain of C.

The knowledge and attitude about HIV/AIDS among Jordanian dental students: (Clinical versus pre clinical students) at the University of Jordan.

Background: The present study aimed to address the suspected deficiency in the level of understanding of HIV/AIDS among clinical and pre clinical dental students at the University of Jordan. In this cross-sectional study, structured questionnaires were distributed to fifth year dental students (n = 121) and to third year dental students (n = 144) in the academic year 2008/2009.

Findings: Significantly higher percentage of fifth-year students compared to third-year students felt that the teaching they received on cross-infection precautions and barrier dentistry was adequate (P < 0.

Study of the elution of fluconazole from a self-polymerizing acrylic resin and its activity against resistant Candida albicans.

The study aimed, firstly, to monitor the release of an antifungal drug, fluconazole, from a self-polymerizing poly(methyl methacrylate) (PMMA) denture base resin in artificial saliva and comparing it with the release in water; and secondly, to investigate the effect of the released drug on the growth of resistant and standard strains of Candida albicans. A high-performance liquid chromatography-ultra-violet (HPLC-UV) method was used in the analysis of the released eluates into distilled water from self-polymerized PMMA discs doped with the 10% fluconazole antifungal drug. The efficacy of the released drug against resistant and standard strains of C.

A new form of intraoral delivery of antifungal drugs for the treatment of denture-induced oral candidosis.

Objectives: To monitor the release of the antifungal drugs Fluconazole, Chlorhexidine and a combination of the two from an auto-polymerized poly (methyl methacrylate) (PMMA) denture base resin; and to investigate the effect of the released drugs upon the growth of Candida albicans.

Methods: A high performance liquid chromatography-Ultra violet (HPLC-UV) method was used in the analysis of the released drugs into distilled water from PMMA discs doped with the antifungal drugs Fluconazole (10%), Chlorhexidine (10%) and a combination of the two drugs (5% each). The antifungal efficacy of the released drugs was monitored, microbiologically, employing "well" technique on a Saborauds culture medium inoculated with a resistant strain of Candida albicans.

Burnout among the clinical dental students in the jordanian universities.

Background: The study aimed to evaluate the level of burnout among the clinical dental students in two Jordanian universities.

Methods: A total of 307 students from the two schools were surveyed using Maslach Burnout Inventory survey. Scores for the inventory's subscales were calculated and the mean values for the students' groups were computed separately.

Prevalence of temporomandibular joint disorders among students of the university of jordan.

Background: This study aimed to investigate the prevalence of temporomandibular disorder (TMD) among students of the University of Jordan.

Methods: Information about the symptoms of TMD and the possible risk factors were collected using specifically designed questionnaires. The collected data sets were treated statistically using the SPSS release 14 package.

The effects of disinfectants on dimensional accuracy and surface quality of impression materials and gypsum casts.

Background: The study aimed to evaluating the effect of disinfecting impression materials on the dimensional accuracy and surface quality of the resulting casts.

Methods: Impressions of a steel die constructed according to ANSI/ADA specification No.18 were made with each of alginate, addition cured silicone, condensation cured silicone and zinc oxide eugenol paste, and disinfected consequently by each of 0.

The relationships of the maxillary central incisors and canines to the incisive papilla in Jordanians.

Aim: The validity of the relationship between the maxillary anterior teeth and the incisive papilla and the pertinence of this relationship to Jordanians was examined.

Methods And Materials: A computerized digital caliper (CDC) tool was developed and used in the measurements which were made on scanned images of dental casts of 298 Jordanians. The distances from a tangent to the labial surface of the central incisors to the midpoint and the posterior border of the incisive papilla were measured.

Comparative electrochemical investigation of the effect of aging on corrosion of dental amalgam.

Objective: To investigate corrosion in dental amalgam and evaluate the effects of composition and long-term aging on the alloy's corrosion behavior.

Method And Materials: A sample of high-copper and low-copper formulations was employed. Corrosion tests were performed using a 3-electrode polarization cell.

Papillon-Lefèvre syndrome with albinism: a review of the literature and report of 2 brothers.

Background: Papillon-Lefèvre syndrome (PLS) is a very rare autosomal recessive disorder characterized by palmoplantar hyperkeratosis and severe early onset of destructive periodontitis leading to premature loss of both primary and permanent dentitions. The etiopathogenesis of the condition suggests that there is a genetic basis for susceptibility to specific virulent pathogens. Variation in the clinical presentation of PLS has recently been observed.

Durability of acrylic tooth bond to polymeric denture base resins.

The effect of ageing in simulated mouth conditions on bond strength between acrylic teeth and denture base resins was evaluated. Bonding was tested in tension according to ADA specification No. 15.