Accuracy of Multiple Pour Cast from Various Elastomer Impression Methods

The accurate duplicate cast obtained from a single impression reduces the profession clinical time, patient inconvenience, and extra material cost. The stainless steel working cast model assembly consisting of two abutments and one pontic area was fabricated. Two sets of six each custom aluminum trays were fabricated, with five mm spacer and two mm spacer. The impression methods evaluated during the study were additional silicone putty reline (two steps), heavy-light body (one step), monophase (one step), and polyether (one step). Type IV gypsum casts were poured at the interval of one hour, 12 hours, 24 hours, and 48 hours. The resultant cast was measured with traveling microscope for the comparative dimensional accuracy. The data obtained were subjected to Analysis of Variance test at significance level <0.05. The die obtained from two-step putty reline impression techniques had the percentage of variation for the height −0.36 to −0.97%, while diameter was increased by 0.40–0.90%. The values for one-step heavy-light body impression dies, additional silicone monophase impressions, and polyether were −0.73 to −1.21%, −1.34%, and −1.46% for the height and 0.50–0.80%, 1.20%, and −1.30% for the width, respectively

Awareness and Perceptions Towards Menopause Among Saudi Women

Background : Menopause is an important period of women life .it is a normal physiological process, defined as the permanent cessation of menses for 12 months or more. Our study assess the awareness and perception of Saudi women aged from 30 to 65 years towards menopause and to Address the health needs of women to improve the quality of life of menopausal Saudi women. Methods: Cross sectional study by using survey distributed electronically through kingdom of Saudi Arabia for Saudi women between ages of 30-65 years old. Results: The number of participant were total of 738 women, 130 women were menopause already. Most of participant were from southern region (67%). Study shows that 51-55 years old is the average age of menopause. Our participant (41.9%) they choose the answer of “inability of ovary to produce egg “as definition of menopause while (17.6 %) choose “cessation of mensuration for more than 1 year), most of women (31.9 %) they though that psychological symptoms will be more prominent with significant p value (0.003), while among menopause group they choose hot flush as the most prominent symptoms (38.5%). About 70% of our sample they mention that they don’t have enough background about menopause. Conclusion: Heath education with proper medical advices should be a part of primary health clinics projects. Media and menopause groups play important role to help health provider

Microcomputed tomographic analysis of the furcation grooves of maxillary first premolars

Objectives. The aims of this study were to conduct a morphometric analysis on the buccal furcation grooves in freshly extracted bifurcated maxillary first premolars (MFPs) and to correlate all anatomical measurements using microcomputed tomography. Materials and Methods. Twenty-three human MFPs with bifurcated canals were selected for this study. The specimens were analyzed with microcomputed tomography.The length, the beginning, and the ending of the grooveswere measured. The minimum cross-sectional canal wallthickness in the grooves was located, and the width ofthe dentin thickness was calculated. All measurementswere recorded and statistically analyzed. Results. The concavity of the grooves begins before the bifurcation site in 9/23 samples and after the bifurcation in 56.5% of samples. The groove length varied between 1.1-9 mm; the cross-sectional area with minimum palatal dentin thickness was 0.78±0.14 mm, which was locatedat a mean distance of 7.1 mm from the cementoenamel junction (CEJ) and 1.38 mm from the furcation. Conclusions. The presence of the furcation grooves in the palatal aspects of the buccal roots of the MFPs was 100%. The length, depth, location, and width of the dentinthickness of the grooves varied in relation to tooth length, bifurcation, and CEJ. These parameters shouldbe taken into consideration before any endodontic orrestorative procedures are performed. Reducing dentin width too vigorously by intracanal instrumentation can predispose to vertical root fractures or perforations; if a post cannot be avoided, it should not extend 6.5 mmfrom the CEJ

Argus II retinal prosthesis for retinitis pigmentosa in the Middle East: The 2015 Pan-American Association of Ophthalmology Gradle Lecture

Background: To describe the outcomes of patients with retinitis pigmentosa (RP) who received the Argus II Retinal Prosthesis System. Methods: This retrospective, interventional case series evaluated 10 consecutive patients who received the Argus II retinal implant and underwent visual function tests with the system on and system off. The main outcome measures were safety (the number, seriousness, and relatedness of adverse events), and visual function measured by computer-based objective tests, including square localization (SL) and direction of motion (DOM). Secondary measures included functional vision performance, including orientation and mobility (O&M) tasks. Results: There were no intraoperative complications and all prostheses remained implanted at the end of follow up. The mean patient age was 41.3 years; mean duration of the implant in vivo was 2.1 years. One patient had a suture exposure over the coil suture tab and over the inferior case suture tab at 2 years postoperatively, which was managed successfully. One patient developed mild vitreous hemorrhage that resolved spontaneously. One patient developed high intraocular pressure postoperatively due to a tight scleral band (SB) that was managed successfully. Patients performed significantly better with the Argus II system on than off on all tasks. Conclusion: Patients who received the Argus II had a safety profile out to 4 years post-implantation that was markedly better than that observed in the pre-approval phase of the Argus II. In this population of RP patients, the Argus II retinal prosthesis provided useful visual function over several years that likely translates into improved quality of life. Trial Registration: clinicaltrials.gov identifier, NCT00407602