Introduction: Tumors of salivary glands constitute 3% of neoplasms of the body. Clinical signs and symptoms usually occur in tumors at advance stages. Dynamic-contrast-enhanced and diffusion-weighted MR sequences have been described as useful diagnostic tools in other locations. Our goal is to evaluate the utility of these techniques for parotid tumors. Material and methods:We retrospectively reviewed the Parotid tumors operated by our department whit Dynamic-contrast-enhanced and diffusion-weighted MR sequences between 2012 and 2015. We correlate the results with the final histopathological diagnosis.Results: From 44 parotid tumors studied, Warthin tumors were the most common (43%). They showed high enhancement and high washout in perfusion series, so as low ADC values. Pleomorphic adenomas (41%) are hyperintense tumors in T2, with moderate constant enhancement in perfusion and high Apparent Diffusion Coefficient values. It is not possible to establish consistent results for malignant tumors given their underrepresentation in this sample. Conclusion:Advanced MRI techniques contribute to the differential diagnosis of parotid tumors. Perfusion is useful in diagnosis of Warthin tumors and Pleomorphic adenomas. There is greater overlap in other tumors, for which diffusion-weighted MR sequences can help in discriminating malignancies. Both malignancies and Warthins show low Apparent Diffusion Coefficient values.

To evaluate the effect of chlorhexidine incorporation on the surface free energy and microtensile bond strength of three reline acrylic resins, after chemical aging. Methods: For each of the studies, six experimental groups were set according to reline resin and chlorhexidine incorporation [Kooliner-0% vs. 2.5% chlorhexidine; Ufi Gel Hard and Probase Cold-0% vs. 5% chlorhexidine]. The specimens were submitted to a chemical aging process for 4 weeks (pH fluctuation in artificial saliva, cycles of 6 hours at pH=3 and 18 hours at pH=7). For the first study, 42 specimens were prepared (n=7) and, after chemical aging, the surface free energy was calculated. For the adhesive strength study, 36 denture base resin cubes were prepared and reline resin was applied to them according to the experimental group (n=6). Five sticks (1×1 mm section) were obtained from each specimen and submitted to chemical aging followed by microtensile test (1 kN; 1 mm/min). Data were analyzed with Kruskal-Wallis and Mann-Whitney non-parametric tests (α=0.05). Results: Differences (p<0.05) were observed between resins, both in surface energy and in bond strength. The chlorhexidine incorporation did not affect the surface energy of neither of the resins and also did not affect the bond strength of Kooliner and Ufi Gel Hard (p>0.05). Incorporating 5% chlorhexidine (p=0.004) decreased the Probase Cold bond strength to the denture base resin. Conclusions: After chemical aging, chlorhexidine incorporation only negatively affected the

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Introduction: Estimation of stature holds a special place in the field of forensic medicine. Objectives: This study was designed to investigate the ability of estimating stature from the dimensions of lower anterior teeth. Method: The study was carried out by taking the measurement from the mesio-distal widths of lower central incisor, lateral incisor and canine of 100 undergraduate students for examination. Each hemiarch was considered separately equaling 200 inferior hemi-arches, which were divided according to the dental alignment into normal, crowded and diastema and the measurements (arch and chord) were made with a 'divider caliper'. Result: A statistically significant difference between the types of dental arch was obtained for both males and females with regards to the different dental alignments; higher correlation between stature the arch for normal alignment (r=0.9658; r =0.8347); moderate correlation for crowded alignment (r=0.8097; r =0.6958); and a weaker correlation for diastema (r = 0.656, r = 0.3938) for male & female respectively. The left side of the hemiarch showed a higher success rate (82%) in comparison to right side (72%). Statistically significant differences were also found between the types of arches for both right and left side (p<0.005). Conclusion: The present study would be useful for stature estimation to the forensic experts.

Background: The prevalence of oral mucosal lesions in infants and neonates is still a matter of debate. Objective: To find the frequency of oral mucosal lesions in children from Sulaymaniyah city. Patients and Methods: A cross-sectional study was performed in Maternity and Pediatrics Teaching Hospitals in Sulaymaniyah city. Twohundred children aged from birth to two years old were randomly selected. Demographic features, mode of delivery, pattern of feeding, and type and site of oral mucosal lesions, were recorded. Results: Male: female ratio was 1.06:1, and 64% were delivered by cesarean section. Significant differences were present between breastfeeding with the mode of delivery and age of the infants. Oral mucosal lesions were observed in 64.5% of children at 141 sites. 30% of lesions are located at median palatine raphe. The diagnosis of 30% of oral mucosal lesions was Epstein pearls, and 16% were Bohn’s nodule. The oral mucosal lesions were more frequently seen in children within the first week. Conclusion: About three-quarters of children was afflicted with oral mucosal lesions. Besides, Epstein pearls and Bohn’s nodule were among the most frequent diagnosis. Further, ages of a week or less afflicted more with congenital oral mucosal lesions. Keywords: Oral mucosal lesion, Oral developmental cyst, Infant, Neonates, Sulaymaniyah