keyword
https://read.qxmd.com/read/38084831/long-term-survival-and-complications-of-quad-zygoma-protocol-with-anatomy-guided-approach-in-severely-atrophic-maxilla-a-retrospective-follow-up-analysis-of-up-to-17%C3%A2-years
#21
JOURNAL ARTICLE
Rubén Davó, Shengchi Fan, Feng Wang, Yiqun Wu
INTRODUCTION: The objective of the study was to provide long-term clinical outcomes and complications in the severely atrophic edentulous maxillae treated by means of the quad zygoma protocol (QZP) using the Anatomy-Guided Approach (AGA). METHODS: This was a retrospective cohort study of all consecutive patients with severely atrophic edentulous maxilla and insufficient bone height and width in the anterior and posterior regions bilaterally, who underwent rehabilitation with the QZP between May 2006 and December 2021...
December 12, 2023: Clinical Implant Dentistry and related Research
https://read.qxmd.com/read/38039537/long-term-tumor-control-in-koos-grade-iv-vestibular-schwannomas-without-the-need-for-gross-total-resection
#22
JOURNAL ARTICLE
Michel Roethlisberger, Giusi Moffa, Jonathan Rychen, Attill Saemann, Sven Straumann, Ethan Taub, Daniel W Zumofen, Heike Neddersen, Birgit Westermann, Daniel Bodmer, Luigi Mariani
OBJECTIVE: The modern management of patients with Koos grade IV vestibular schwannomas (VSs) aims at functional preservation and long-term tumor control. Gross-total resection (GTR) leads to optimal tumor control but frequently also results in permanent facial nerve (FN) palsy. Subtotal resection (STR) or near-total resection (NTR) followed by a wait-and-scan protocol and second-line radiation therapy (RT) in case of progressive residuals yields excellent tumor control rates with less permanent morbidity...
December 1, 2023: Journal of Neurosurgery
https://read.qxmd.com/read/38034216/the-impact-of-implant-angulation-on-the-stress-distribution-and-survival-rate-of-implant-supported-fixed-dental-prostheses-a-retrospective-study
#23
JOURNAL ARTICLE
Elashri Chatterjee, Amit Nasha, Mohammed Mustafa, Sai Lakshmi Chinthalapudi, Sushma Padavala, Achyuth Kumar Lakshmipuram, Tarun K Bhatnagar
Background Implant-supported fixed dental prostheses (FDPs) have become a reliable method for the rehabilitation of edentulous patients, offering improved contour, function, esthetics, and overall oral health. This retrospective study aimed to evaluate the impact of implant angulation on the stress distribution and survival rate of implant-supported FDPs using finite element analysis (FEA). Methods A retrospective cross-sectional design was employed, utilizing existing patient records and radiographic data...
October 2023: Curēus
https://read.qxmd.com/read/37998016/evaluation-of-bone-repair-using-a-new-biphasic-synthetic-bioceramic-plenum-%C3%A2-oss-hp-in-critical-calvaria-defect-in-rats
#24
JOURNAL ARTICLE
Paula Buzo Frigério, Lilian Caldas Quirino, Marisa Aparecida Cabrini Gabrielli, Pedro Henrique de Azambuja Carvalho, Idelmo Rangel Garcia Júnior, Valfrido Antonio Pereira-Filho
(1) Background: Biphasic bioceramics are synthetic bone substitutes that provide greater safety and better predictability in guided bone regeneration. This study aimed to evaluate the bone repair process using a new biphasic bioceramic of synthetic origin (Plenum® Osshp -70HA: 30β-TCP) in critical calvarial defects. (2) Methods: seventy-four defects were created in rat calvaria and divided into two groups-Plenum® Osshp (PO), right side, and Straumann® BoneCeramic™ (BC), left side...
November 10, 2023: Biology
https://read.qxmd.com/read/37992584/an-analytical-model-to-measure-dental-implant-stability-with-the-advanced-system-for-implant-stability-testing-asist
#25
JOURNAL ARTICLE
Chester Jar, Andrew Archibald, Monica Gibson, Lindsey Westover
A non-invasive method of quantitatively assessing dental implant stability is important to monitor its long-term health. The Advanced System for Implant Stability Testing (ASIST) is a noninvasive technique that couples the impact technique with a linear vibration model of the implant system, such that the measured signal can be used to determine a matching analytical response. The purpose of this study was to evaluate the ASIST technique by comparing stability estimates obtained from artificial implant installations with various abutments...
November 17, 2023: Journal of the Mechanical Behavior of Biomedical Materials
https://read.qxmd.com/read/37924229/accuracy-of-digital-duplication-scanning-methods-for-complete-dentures
#26
JOURNAL ARTICLE
Abdullah Alehaideb, Wei-Shao Lin, John A Levon, Tien-Min G Chu, Chao-Chieh Yang
PURPOSE: To compare the accuracy of four digital scanning methods in duplicating a complete denture. MATERIAL AND METHODS: Four scanning methods were used: cone beam computed tomography (CBCT), Straumann desktop scanner (DS), Trios intraoral scanner (TIO), and Virtuo Vivo intraoral scanner (VVIO). Each method was used to duplicate all the surfaces of a printed complete denture. The denture was scanned 10 times in each group. The trueness (in root mean square, RMS) and precision (in standard deviation, SD) were calculated by comparing the combined dentition, denture extension, and intaglio surfaces with the reference file...
November 4, 2023: Journal of Prosthodontics: Official Journal of the American College of Prosthodontists
https://read.qxmd.com/read/37910827/comparison-of-treatment-time-for-single-implant-crowns-between-digital-and-conventional-workflows-for-posterior-implant-restorations-a-randomized-controlled-trial
#27
JOURNAL ARTICLE
Worapat Jarangkul, Chatchai Kunavisarut, Suchaya Pomprasertsuk-Damrongsri, Tim Joda
PURPOSE: This randomized controlled trial (RCT) aimed to compare treatment time of single-implant crowns for both digital and conventional workflows. In addition, prostheses made of polymer-infiltrated ceramic-network (PICN; Enamic®, Vita, Bad Säckingen, Germany) and lithium disilicate (LS2; NICE®, Straumann AG, Basel, Switzerland) were compared in each group. MATERIALS AND METHODS: A total of 40 patients (n=40) who needed a single-implant crown on posterior regions were considered and randomly divided into digital workflows (n=20) with an intraoral scanner (IOS, iTero Elements 5D®, Align Technologies, San José, CA, USA) and conventional workflows (n=20) with impressions using polyether (Impregum™ Penta™, 3M ESPE, Landsberg am Lech, Germany)...
November 1, 2023: International Journal of Oral & Maxillofacial Implants
https://read.qxmd.com/read/37903080/use-of-a-2-piece-small-diameter-implant-in-the-esthetic-zone-in-a-site-of-chronic-residual-periapical-lesion-a-case-report-with-1-year-follow-up-and-histopathological-examination
#28
JOURNAL ARTICLE
Shahad B Alsharif
BACKGROUND Replacing missing teeth in the anterior region of the jaw can be challenging due to the limited available interdental space. Improper selection or inadequate placement of a dental implant in this situation can affect the adjacent anatomical structures negatively. What if, in addition, a residual intraosseous chronic inflammatory lesion was present? The objective of this case report is to demonstrate the step-by-step surgical procedures of replacing a maxillary lateral incisor in a patient with a residual lesion with a satisfactory outcome...
October 30, 2023: American Journal of Case Reports
https://read.qxmd.com/read/37870470/human-platelet-derived-growth-factor-bb-rhpdgf-bb-with-collagen-matrix-for-sinus-elevation-without-using-a-bone-graft
#29
Iya H Ghassib, Muhammad H A Saleh, Hom-Lay Wang
BACKGROUND: This case report involves a 38-year-old male who presented to the clinic after experiencing complications from a tooth extraction, including a dislodged root segment in the sinus, a sinus wall fenestration on the palate, a residual bone height (RBH) of 3 mm, and inadequate healing of the soft tissue. He presented for implant placement. METHODS: Recombinant human platelet-derived growth factor-BB (rh-PDGF-BB) was applied to a wound dressing material and placed in the sinus cavity alongside a 4...
October 23, 2023: Clinical Advances in Periodontics
https://read.qxmd.com/read/37866349/histological-phenotyping-in-eosinophilic-esophagitis-localized-proximal-disease-is-infrequent-but-associated-with-less-severe-disease-and-better-disease-outcome
#30
JOURNAL ARTICLE
Alexis Heil, Tobias Kuehlewindt, Anne Godat, Hans-Uwe Simon, Dagmar Simon, Philipp Schreiner, Catherine Saner, Stephan R Vavricka, Luc Biedermann, Ekaterina Safroneeva, Jean-Benoit Rossel, Andreas Limacher, Alex Straumann, Alain M Schoepfer, Thomas Greuter
INTRODUCTION: It is still unknown whether eosinophilic esophagitis (EoE) patients with localized disease are different from those with extended disease. METHODS: We evaluated prospectively included patients in the Swiss EoE cohort. Data on all patients with active disease at baseline, no concomitant gastroesophageal reflux disease, no strictures at baseline, and at least one follow-up visit were analyzed. We compared patients with histologically localized proximal versus distal versus extended (=proximal and distal) disease with regard to patient, disease characteristics, disease presentation, and development of complications...
October 20, 2023: International Archives of Allergy and Immunology
https://read.qxmd.com/read/37690772/ascending-to-new-heights-for-novel-therapeutics-for-eosinophilic-esophagitis
#31
JOURNAL ARTICLE
Ikuo Hirano, Evan S Dellon, Gary W Falk, Nirmala P Gonsalves, Glenn T Furuta, Albert J Bredenoord
No abstract text is available yet for this article.
September 9, 2023: Gastroenterology
https://read.qxmd.com/read/37668109/clinical-performance-of-monolithic-zirconia-crowns-on-titanium-zirconium-reduced-diameter-implants-in-the-molar-area-interim-data-at-three-years-of-a-randomized-controlled-trial
#32
JOURNAL ARTICLE
K Zumstein, T Waller, C H F Hämmerle, R E Jung, G Benic, S Mühlemann
AIM: The aim of the present study was (i) to evaluate the clinical performance of reduced-diameter implants placed in the molar area and (ii) to test whether monolithic zirconia implant-supported crowns lead to similar clinical outcomes compared to porcelain-fused-to-metal crowns. MATERIALS AND METHODS: A total of 76 patients needing a single implant crown in the posterior region were recruited. All patients received a titanium-zirconium reduced-diameter implant (Straumann Roxolid, Tissue Level, Standard Plus, diameter 3...
September 5, 2023: Clinical Oral Implants Research
https://read.qxmd.com/read/37656066/the-cnn-model-aided-the-study-of-the-clinical-value-hidden-in-the-implant-images
#33
JOURNAL ARTICLE
Xinxu Huang, Xingyu Chen, Xinnan Zhong, Taoran Tian
PURPOSE: This article aims to construct a new method to evaluate radiographic image identification results based on artificial intelligence, which can complement the limited vision of researchers when studying the effect of various factors on clinical implantation outcomes. METHODS: We constructed a convolutional neural network (CNN) model using the clinical implant radiographic images. Moreover, we used gradient-weighted class activation mapping (Grad-CAM) to obtain thermal maps to present identification differences before performing statistical analyses...
September 1, 2023: Journal of Applied Clinical Medical Physics
https://read.qxmd.com/read/37649061/evaluation-of-the-masking-ability-marginal-adaptation-and-fracture-resistance-of-screw-retained-lithium-disilicate-implant-supported-crowns-cemented-to-titanium-bases-versus-preparable-abutments
#34
JOURNAL ARTICLE
Ahmad Waled Mohamad Kordi, Abdallah Ibrahim Salman, Nayrouz Adel Metwally, Mohamed Moataz Khamis
BACKGROUND: Straight preparable abutments and titanium bases (ti-base) can be used to support single-unit screw-retained lithium disilicate implant-supported restorations. The choice between using both abutments depends on many factors. The purpose of this in vitro study was to compare the masking ability, marginal adaptation, and fracture resistance of screw-retained lithium disilicate implant-supported crowns cemented to straight preparable abutments and ti-bases. METHODS: Twenty laboratory implant analogs (Straumann Bone Level; Straumann AG) were randomly divided into 2 groups (n = 10 each) according to the type of the abutment used...
August 30, 2023: BMC Oral Health
https://read.qxmd.com/read/37645255/imaging-increased-metabolism-in-the-spinal-cord-in-mice-after-middle-cerebral-artery-occlusion
#35
JOURNAL ARTICLE
Ruiqing Ni, Nadja Straumann, Serana Fazio, Xose Luis Dean-Ben, Georgios Louloudis, Claudia Keller, Daniel Razansky, Simon Ametamey, Linjing Mu, César Nombela-Arrieta, Jan Klohs
Emerging evidence indicates crosstalk between the brain and hematopoietic system following cerebral ischemia. Here, we investigated metabolism and oxygenation in the spleen and spinal cord in a transient middle cerebral artery occlusion (tMCAO) model. Sham-operated and tMCAO mice underwent [18 F]fluorodeoxyglucose (FDG)-positron emission tomography (PET) to assess glucose metabolism. Naïve, sham-operated and tMCAO mice underwent multispectral optoacoustic tomography (MSOT) assisted by quantitative model-based reconstruction and unmixing algorithms for accurate mapping of oxygenation patterns in peripheral tissues at 24 h after reperfusion...
August 2023: Photoacoustics
https://read.qxmd.com/read/37629928/three-dimensional-peri-implant-tissue-changes-in-immediately-vs-early-placed-tapered-implants-restored-with-two-different-ceramic-materials-1-year-results
#36
JOURNAL ARTICLE
Malin Strasding, Yuwon Jeong, Laurent Marchand, Stefan P Hicklin, Irena Sailer, Minji Sun, Hyeonjong Lee
BACKGROUND: A prospective multi-center randomized controlled clinical trial was performed to digitally analyze tissue volume changes in immediately and early placed implants with simultaneous bone augmentation restored with two different all-ceramic materials. METHODS: A total of 60 patients received 60 bone-level tapered implants (BLT, Straumann AG) immediately (n = 30) or early placed, 8-10 weeks after tooth extraction, (n = 30). Implants were restored with all-ceramic single crowns fabricated out of zirconia (Lava Plus, 3M), or lithium disilicate (E...
August 15, 2023: Materials
https://read.qxmd.com/read/37581292/accuracy-of-torque-controllers-on-healing-abutments-in-implant-dentistry-an-in-vitro-study
#37
JOURNAL ARTICLE
Varun Goyal, Rafael Delgado-Ruiz, Kenneth S Kurtz, Georgios E Romanos
PURPOSE: To evaluate the accuracy of three torque-control devices used on healing abutments in implant prosthodontics. MATERIALS AND METHODS: In this in vitro experiment, three torque controllers, Ankylos® friction-based, Straumann® spring-based, and Anthogyr® pre-calibrated torque control devices were used to tighten the healing abutments of Ankylos® and Straumann® dental implants to a pre-determined value of 15 Ncm. A digital torque meter (DT), Cedar DID-4A, was used to assess removal torque as a surrogate for the accuracy of the torque controllers to apply a tightening force of 15Ncm on healing abutments...
August 15, 2023: Journal of Prosthodontics: Official Journal of the American College of Prosthodontists
https://read.qxmd.com/read/37570441/the-influence-of-the-clinicians-experience-on-the-outcome-of-dental-implants-a-clinical-audit
#38
JOURNAL ARTICLE
Omir Aldowah, Hamad Alawad, Mohammad Alqhtani
UNLABELLED: The purpose of this outcome audit is to evaluate the influence of the clinicians' experience on the outcome of dental implants. In addition, it is to identify the associated risk factors that might influence the success and survival of these implants. METHODOLOGY: The records of patients treated with SLA/SLActive Straumann implants were screened. This enabled us to have a minimum of 12 months of follow-up. Eligible patients, according to the inclusion criteria, were contacted and invited to undergo a follow-up assessment...
August 4, 2023: Healthcare (Basel, Switzerland)
https://read.qxmd.com/read/37537105/effect-of-splinting-scan-bodies-on-the-trueness-of-complete-arch-digital-implant-scans-with-5-different-intraoral-scanners
#39
JOURNAL ARTICLE
Luís Azevedo, Tiago Marques, Duygu Karasan, Vincent Fehmer, Irena Sailer, André Correia, Miguel Gómez-Polo
STATEMENT OF PROBLEM: The absence of fixed reference points can affect the trueness of complete-arch intraoral digital implant scans. The effect of splinting intraoral scan bodies (ISBs) or the inclusion of artificial landmarks (AL) on the trueness of complete-arch digital implant scans is still unclear. PURPOSE: The purpose of this study was to analyze the effect of splinting ISBs or the inclusion of AL on the trueness of complete-arch digital implant scans with 5 intraoral scanners (IOSs)...
August 1, 2023: Journal of Prosthetic Dentistry
https://read.qxmd.com/read/37527179/survival-of-four-conical-implant-abutment-connections-after-removal-of-the-abutment-screw-and-simulated-cyclic-loading-an-in-vitro-comparative-study
#40
JOURNAL ARTICLE
Kuang-Ta Yao, Tsai-Yu Chang, Guan-Jhong Huang, Hsu-Wei Fang, Ding-Han Wang, Ming-Lun Hsu
Objectives This in vitro study evaluated the mechanical behavior of different conical connection implant systems after abutment screw withdrawal. Materials and Methods Four conical connection systems were selected based on different conical half-angles: Ankylos (5.7°), Cowell (7.0°), Straumann (7.5°), and Astra (11.0°). In each system, five implants and abutments were used (n = 5). According to the recommended value, each abutment screw was torqued to settle the abutment and then withdrawn through a predesigned hole of the cemented crown...
May 30, 2023: Journal of Oral Implantology
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