The Frequency and Distribution of Idiopathic Osteosclerosis of the Jaw

Objectives: To determine the prevalence of idiopathic osteosclerosis (IO) in the jaw by radiographic evaluation and to investigate the relationship between the findings in relation to age, gender, and localization. Methods: The study included 2,211 panoramic radiographs obtained from the patients (915 men and 1,296 women) whose ages ranged from 10-77 and who visited the Department of Oral Diagnosis and Radiology in the Faculty of Dentistry, Erciyes University between 2008 and 2009. Results: Of 2,211 patients, 135 patients (6.1%) had IO. The prevalence obtained in our study was in the range reported in the literature. IO was detected more often in mandible rather than the maxilla. In addition, mandibular molar localization was the most common localization, and most of the lesions were associated with root apices. Conclusions: In view of the findings, IO can be defined as developmental variations of normal bony architecture, which are unrelated to local stimuli. The lesions can arise at any age, any location with no sex predilection, and IO usually requires no treatment other than diagnosis. Because all these lesions were located in the jaw and could only is detected in panoramic evaluations, this indicates the importance of careful diagnostic evaluation of radiographies in dental examinations

Influence of Ankaferd Blood Stopper on shear bond strength of bonding systems

This study investigated the effect of Ankaferd Blood Stopper (ABS) contamination on bond strength of total- and self-etching systems. Seventy mandibular third molars sectioned in a mesio-distal direction were mounted in acrylic resin, and flat dentin surfaces were exposed. The specimens were randomly assigned to seven groups (n=20), according to the surface treatment: Group I, ABS contamination+37% phosphoric acid+Solobond M; Group II, ABS contamination+Clearfil SE Bond; Group III, ABS contamination+All Bond SE; Group VI, 37% phosphoric acid+ABS contamination+Solobond M; Group V, Solobond M; Group VI, Clearfil SE Bond; and Group VII, All Bond SE. Next, a resin composite (Grandio) was built up using a plastic apparatus and polymerized. The specimens were tested in shear mode at a crosshead speed of 1 mm/min. There were significant differences in bond strengths between the control and ABS-contaminated samples. These findings suggest that ABS contamination reduced bond strength of total- and self-etching adhesives.This study investigated the effect of Ankaferd Blood Stopper (ABS) contamination on bond strength of total- and self-etching systems.Seventy mandibular third molars sectioned in a mesio-distal direction were mounted in acrylic resin, and flat dentin surfaces were exposed. The specimens were randomly assigned to seven groups (n=20), according to the surface treatment: Group I, ABS contamination+37% phosphoric acid+Solobond M; Group II, ABS contamination+Clearfil SE Bond; Group III, ABS contamination+All Bond SE; Group VI, 37% phosphoric acid+ABS contamination+Solobond M; Group V, Solobond M; Group VI, Clearfil SE Bond; and Group VII, All Bond SE. Next, a resin composite (Grandio) was built up using a plastic apparatus and polymerized. The specimens were tested in shear mode at a crosshead speed of 1 mm/min. There were significant differences in bond strengths between the control and ABS-contaminated samples. These findings suggest that ABS contamination reduced bond strength of total- and self-etching adhesives.</p

Comparison of the Cyclic Fatigue Resistance of 5 Different Rotary Pathfinding Instruments Made of Conventional Nickel-Titanium Wire, M-wire, and Controlled Memory Wire

WOS: 000353076700019PubMed ID: 25510316Introduction: This study compared the cyclic fatigue resistance of current nickel-titanium rotary path-finding instruments. Methods: Five types of nickel-titanium rotary pathfinding instruments were used in steel canals with a 90 degrees curvature and a curvature radius of 3 mm (n = 10) and 5 mm (n = 10). The cyclic fatigue of the following instruments was tested at 4 mm from the tip: PathFile (#16 and a .02 taper; Dentsply Maillefer, Ballaigues, Switzerland), G-File (#12 and a .03 taper; Micro-Mega, Besancon Cedex, France), Scout Race (#15 and a .02 taper; FKG Dentaire, La Chaux-de-Fonds, Switzerland), HyFlex GPF (#15 and a .02 taper; Coltene-Whaledent, Allstetten, Switzerland), and ProGlider (#16 with a mean taper of .04125 and a .02 at the first 4 mm from the tip, Dentsply Maillefer). The length of the fractured parts was measured, and the number of cycles to fracture (NCF) was calculated. The data were statistically analyzed using Kruskal-Wallis and MannWhitney tests (alpha =.05). After Bonferroni correction, the new P value was set as .005. Results: The difference in the cyclic fatigue of all the files at both curvatures was statistically significant (P values from .0035 to less than .0001). The ranking of the instruments from the highest to the lowest NCF was as follows: HyFlex GPF, G files, ProGlider, PathFile, and Scout Race. The length of the fractured part of the instruments was similar in all the groups > .05). All the tested instruments had a lower NCF at a curvature radius of 3 mm when compared with a curvature radius of 5 mm (P < .0001). Conclusions: Within the limitations of this study, the cyclic fatigue resistance of the HyFlex GPF instrument was the highest, and the curvature radius had a significant effect on the fatigue resistance

Radicular grooves of maxillary anterior teeth in a Turkish population: A cone-beam computed tomographic study

Objective: There is limited data on the use of cone-beam computed tomography (CBCT) scanning in examining radicular groove (RG). This study aims to investigate the presence of RG in maxillary anterior teeth in a Turkish Population using CBCT scanning and to correlate the findings with the tooth type, and patient's gender

Effect of bleaching agents on calcium loss from the enamel surface

Joint Meeting of the Continental European Division, Scandinavian Division and Israeli Division of the International-Association-for-Dental-Research -- AUG, 2004 -- Istanbul, TURKEYWOS: 000245694400011PubMed ID: 17432790Objectives: To compare the Ca2+ loss of enamel treated with 38% hydrogen peroxide (HP), 35% HP with light, and 10% carbamide peroxide (CP). Method and Materials: Ten extracted premolars were sectioned buccolingually and longitudinally so that 4 specimens were obtained from each tooth. The specimens were randomly assigned to 1 of 4 groups to receive the following bleaching agents: 38% HP, 35% HP with light, 10% CP, and no agent (control). The specimens were treated with an artificial caries solution (pH 4) for 16 days; the solution was replaced on days 4, 8, 12, and 16. Calcium concentration was determined by an atomic absorption spectrophotometer. Repeated measures ANOVA was performed on concentrations on days 4, 8, 12, and 16. Results: At the end of day 16, calcium ions released per square millimeter were calculated cumulatively as follows: 38% HP group: 27.52 +/- 5.22 mu g/mL; 35% HIP with light group: 25.15 +/- 4.99 mu g/mL; 10% CP group: 19.53 +/- 4.03 mu g/mL; control group: 18.35 +/- 4.00 mu g/mL. The differences between the control group and the 35% HP with light group and between the control group and 38% HIP group were statistically significant. Although demineralization differences were observed between the control group and the 10% CP group, this difference was not significant. Conclusions: It can be concluded that 35% HP with light and 38% HP may cause significantly more loss of Ca2+ from the enamel surfaces than 10% CP. Also, 10% CP does not vary significantly from the control.Int Assoc Dent Res, Continental European Div, Int Assoc Dent Res, Scandinavian Div, Int Assoc Dent Res, Israeli Di

An In Vivo Comparison of Commonly Used Topical Antimicrobials on Skin Graft Healing After Full-Thickness Burn Injury

WOS: 000350395100007PubMed ID: 24823344Topical antimicrobials are frequently used for local control of infections in burn patients. It has been postulated that these agents retard wound healing. There are limited data about the effects of topical antimicrobial agents on skin graft healing. In this study, we aimed to evaluate the effects of nitrofurazone, 1% silver sulfadiazine, and povidone-iodine on skin graft healing. Forty male rats were used in this study. A meshed skin graft, placed on an excised burn wound, was used as a model to compare topical agents with a control group. Skin graft survival rates, closure of meshed graft interstices (based on physical parameters, namely epithelialization and wound contraction), and histological changes were analyzed. Graft take was more than 85% in all groups. There was no difference between the mean values of the percent graft survival for each group (P > .05). Epithelialization occurred significantly earlier in animals in the nitrofurazone group (P .05). There was no histological difference between the biopsy specimens of skin grafts. In specimens obtained from the interstices of the meshed graft, no significant differences were found among the groups regarding the wound healing parameters (P > .05). We found that nitrofurazone, silver sulfadiazine, and povidone-iodine had no negative effect on graft healing and take in noncontaminated burn wounds.Baskent UniversityBaskent UniversityThis study was approved by Baskent University Ethical Committee for Experimental Research on Animals and supported by Baskent University Research Fund

In Vitro Fracture Resistance of Endodontically Treated Roots Filled with a Bonded Filling Material or Different Types of Posts

Aim: This study aimed to compare the fracture resistance of roots filled with a bonded material, fiber posts, or titanium post systems. Methods: Canals in the first group were filled with AH Plus and gutta-percha cones, and roots in the second group were filled with Epiphany sealer and Resilon cones. The root fillings (60 roots) were removed up to 4 mm from the canal apex to obtain 10-mm-deep post spaces, and posts were cemented. The groups were as follows: AH Plus control group, Epiphany control group, AH Plus fiber post group, AH Plus titanium post group, Epiphany fiber post group, and Epiphany titanium post group. Fracture tests were performed by using an lnstron testing machine. The force was applied at a 45 degrees axial angle with a constant speed of 1 mm/min. For each sample, the force at which fracture occurred was recorded in units of newtons. Statistical analysis was carried out by using analysis of variance test. Results: There was no statistically significant difference between all groups (P > .05). Conclusions: Titanium posts, fiber posts, and Epiphany root canal filling systems were found to have no reinforcing effect on endodontically treated roots