Sapporo Medical Journal

Abstract : This in-vivo study compares the effects of two distinct attachment modalities on reduction in buccolingual bone width in patients with mandibular overdentures. The study population comprised completely edentulous individuals who received new complete maxillary and mandibular dentures. Two dental implants were installed in the canine regions of each mandible. Subjects were divided into two groups: Group I, utilizing Locator attachments, and Group II, employing Novaloc attachments, both fixated to the implants. Changes in bone buccolingual width around the implants were quantified radiographically using cone beam computed tomography (CBCT). Measurements were obtained at baseline, and at four, eight, and twelve months post-loading. Inferential statistical analysis using independent samples t-tests revealed no statistically significant difference between the Novaloc and Locator groups regarding reduction in buccolingual width at different times, except at the final time point (0-12 months) (p=0.028). The mean reduction in buccolingual width was higher in the Locator group than in the Novaloc group at all time points. The findings of this study suggest that the Novaloc attachment system demonstrates potential as a favorable option for implant-retained overdentures, exhibiting reduced buccolingual width reduction after a one-year follow-up period.

Abstract : Introduction: Drug-drug interactions (DDIs) present a significant challenge for patients, as concurrent medication use can lead to adverse effects. Early detection can mitigate these complications, and clinical pharmacists play a key role in providing guidance and facilitating communication with physicians. Objective: This study aimed to assess the prevalence of DDIs and evaluate the pharmacist's role in monitoring these interactions at Shar Hospital’s neurology department in Sulaimani, using free drug interaction checker mobile applications. Patients and Methods: A prospective observational and interventional study was conducted at Shar Teaching Hospital, Sulaimani, from Nov. 2021 to Feb. 2022. The observational phase assessed DDI incidence and types in patients admitted to the neurology ward. In the interventional phase, clinical pharmacists reviewed high-risk patients’ medications, identified potential interactions, and recommended interventions, such as dose adjustments, alternative medications, or additional monitoring. The impact of these interventions on reducing DDIs and improving outcomes was then evaluated. Results: The study found that 41.1% of patients used 3-5 drugs, while 37.4% used 6-10 drugs. Among the cases, 50.5% showed no interactions, 39.5% had minor interactions, and 3.7% had significant interactions. DDIs accounted for 49% of all interactions. Of the prescribed medications, 50.5% required no intervention, while 49.5% did, with 15.8% of these cases being

Abstract : The maxillary posterior teeth-sinus link is neglected. When planning the orthodontic intrusion of the posterior teeth, it is vital to understand the anatomical connection between the maxillary sinus floor (MSF) and the maxillary posterior teeth (MPT), since a close distance may induce root resorption or impede tooth movement. Treatment planning and MSF-root apices relationship evaluation employ periapical and panoramic radiographs. Materials and methods (1) sample size collection, (2) Linear and angular measurement, (3) statistical analysis. The aim of the present study is to assess the relation between maxillary posterior root apices and the sinus floor in different facial types by using 3 dimensional CBCT imaging. Results Hyperdivergent roots were closer to the sinus floor than hypodivergent or norm divergent roots. If hyperdivergent face biotype patients need second molar intrusion to address anterior open bite, this may not work. Conclusion: 36 scans were categorized by Tweed triangle into norm divergent (12), hypodivergent (12), and hyperdivergent (12). To corroborate the group and FMA angle, reconstructed lateral cephalometry evaluated total anterior face height and FH-SN angle. Root apices scored: score (0): the root of the tooth is away from the cortical border of the sinus, with a zone of cancellous bone in between; score (1): the root is laterally projected, away from the sinus; score (2): the tip of the root is in contact with the sinus; score (3): the root tip

Abstract : The objective was to obtain detailed 3D images of the surface at an atomic level using Atomic Force Microscopy to assess the topography and roughness of three common orthodontic archwires: St.St, CuNiTi, and super-elastic NiTi .The sample included Thirty pieces cut from 15 archwires, all sourced from Ormco with uniform dimensions of “16x22” inches. Various roughness parameters, including Sa, Sq, and Sz were used to quantify the surface roughness. Further imaging was done using electron scan microscope (ESM) at magnification power X200, X400, X600 to capture a larger area of the surface. There was a significant decrease in surface roughness by stainless steel group over NiTi and Cu-NiTi groups. No significant difference was found between Niti and CuNiti groups Conclusions: Significant variations in surface roughness were observed among different types. Detailed analysis of surface topography revealed distinct features, such as scratches, pits, and grooves, that should be avoided by optimizing manufacturing processes to minimize surface defects and improve clinical performance. Stainless steel archwires exhibited the smoothest surface with statistically significant difference than the other groups.The difference in roughness between CuNiTi and NiTi was not statistically significant.The combined use of AFM and SEM provided a comprehensive understanding of surface characteristics, from nanoscale featur

Abstract : Background: The primary stability of the dental implant is a crucial factor determining the ability to initiate temporary implant-supported prosthesis and for subsequent successful osseointegration, especially in the maxillary posterior site. Aim: To assess the reliability of the insertion torque of dental implants by relating it to the implant stability quotient values measured by the Osstell device. Material and methods: This study included healthy, non-smoker patients with no history of diabetes or other metabolic, or debilitating diseases that may affect bone healing, having non-restorable fractured teeth and retained roots in the maxillary posterior site. Primary dental implant stability was evaluated using a torque ratchet from the dental implant kit and ISQ values generated from the Osstell device. Results: Sixteen male patients with an age range of 20-40 years received sixteen delayed dental implants. The insertion torque value in group (1) Mean (31.88±2.59) N/cm whereas group (2) Mean and (SD) for implant primary stability using torque ratchet are (39.38±7.29) N/cm. At the same time, the ISQ values ranged in group (1) Mean and Standard deviation (SD) for implant stability quotient are (66.90±1.81) immediately were group (2) Mean and Standard deviation (SD) for implant stability quotient are (74.75±8.28) ISQ values. The results showed a statistically significant positive correlation between the insertion torque of the dental implant measured by torque rachet and ISQ v