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implant supported overdenture

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https://www.readbyqxmd.com/read/30192350/mechanical-study-of-optimal-implant-position-for-maxillary-implant-supported-overdentures-using-three-dimensional-simulation-software
#1
Koichiro Kamei, Tomoya Gonda, Toshihito Takahashi, Yoshinobu Maeda
PURPOSE: The purpose of this study was to determine the optimal positioning of implants for maxillary implant-supported overdentures (MIODs) using finite element analysis (FEA). MATERIALS AND METHODS: Three-dimensional (3D) finite element models were built incorporating the maxilla, mucous membrane, removable denture, and artificial teeth using FEA software. Four models were prepared: one without an implant; one with two implants in the region of the lateral incisor; one with two implants in the first premolar region; and one with four implants in the lateral incisor and first premolar regions...
September 6, 2018: International Journal of Prosthodontics
https://www.readbyqxmd.com/read/30191668/a-comparative-evaluation-of-stress-distribution-with-two-attachment-systems-of-varying-heights-in-a-mandibular-implant-supported-overdenture-a-three-dimensional-finite-element-analysis
#2
Nikita Khurana, Shobha Rodrigues, Satish Shenoy, Sharon Saldanha, Umesh Pai, Thilak Shetty, Srikant N, M Mahesh, Puneet Hegde
PURPOSE: To analyze and compare the stress distribution in an implant-retained overdenture complex using ball and Locator attachments of three heights by means of a 3D finite element analysis (FEA). MATERIALS AND METHODS: Six finite element models comprising an edentulous mandible with two interforaminal bone-level implants and ball attachments of heights 1 mm (A1), 3 mm (A3), and 5 mm (A5), and Locator attachments of heights 1 mm (B1), 3 mm (B3), and 5 mm (B5), were designed using ANSYS Workbench Software...
September 6, 2018: Journal of Prosthodontics: Official Journal of the American College of Prosthodontists
https://www.readbyqxmd.com/read/30123306/the-effect-of-low-level-laser-810-nm-and-light-emitting-diode-photobiomodulation-626-nm-on-the-stability-of-the-implant-and-inflammatory-markers-interleukin-1-beta-and-prostaglandin-e2-around-implants
#3
Jafar Memarian, Mohammad Ketabi, Shahram Amini
Background: One of the most common problems in edentulous patients is the low stability of lower dentures. The most effective method to overcome this problem is implant-supported overdentures. After placing an implant, for the process of osseointegration to be complete and successful, it is better that patients do not use their denture for few months. This may be nonconvenient for patient because they are unable to speak and eat properly. The aim of this study was to evaluate the effect of low level laser (LLL) and light-emitting diode (LED) photobiomodulation on implant stability as well as their effect on interleukin-1 beta (IL-1β) and prostaglandin E2 (PGE2) biomarkers around implant in lower anterior region (over denture)...
July 2018: Dental Research Journal
https://www.readbyqxmd.com/read/30113126/rehabilitation-of-the-edentulous-mandible-with-implant-supported-overdentures-on-telescopic-abutments-and-immediate-loading-a-controlled-prospective-clinical-study
#4
Stefanos Kourtis, Phoebus Madianos, Michael Patras, Efstathia Andrikopoulou
The rehabilitation of the edentulous mandible with implant-supported overdentures is an established clinical procedure but immediate loading of implants supporting mandibular overdentures has not been equally documented. AIM: The aim of this prospective clinical study was to evaluate the rehabilitation of the edentulous mandible with immediate loading and implant-supported overdentures. MATERIALS AND METHODS: 10 patients were restored with immediate loading of the implants and 5 with delayed loading...
August 16, 2018: Journal of Esthetic and Restorative Dentistry
https://www.readbyqxmd.com/read/30109299/a-review-of-the-outcome-of-dental-implant-provision-in-individuals-with-movement-disorders
#5
Mark Edward Packer
Movement disorders encompass a wide range of medical conditions that demonstrate changes to muscle function and tone which present with orofacial dyskinesia and dystonia. The most common conditions exhibiting these features are Parkinson's disease, Down syndrome, chorea and epilepsy. AIM: To establish whether implant success in patients suffering from movement disorders is similar to the general population, identifying risk factors and noting recommendations that may aid maintenance programmes...
2018: European Journal of Oral Implantology
https://www.readbyqxmd.com/read/30097160/there-seem-to-be-no-important-differences-between-the-1-year-outcomes-of-mandibular-overdentures-supported-by-2-implants-placed-in-the-canine-region-and-in-the-premolar-region-when-the-canine-region-is-not-an-option
#6
https://www.readbyqxmd.com/read/30048048/a-randomized-controlled-clinical-trial-assessing-initial-crestal-bone-remodeling-of-implants-with-a-different-surface-roughness
#7
Maarten Glibert, Carine Matthys, Robert-Jan Maat, Hugo De Bruyn, Stijn Vervaeke
PURPOSE: The aim of current split-mouth study is to compare crestal bone loss of hybrid with moderately rough implants in patients with a bar-supported mandibular overdenture. MATERIALS AND METHODS: Fully edentulous patients were enrolled for treatment with implant-supported overdentures. Each patient received two implants of which one moderately rough (Sa: 1.3 μm) and one hybrid surface implant (moderately rough implant body [Sa: 1.3 μm] and a minimally rough implant neck [Sa: 0...
July 26, 2018: Clinical Implant Dentistry and related Research
https://www.readbyqxmd.com/read/30033158/does-the-retention-system-influence-the-stability-of-implant-supported-maxillary-overdentures-a-comparison-with-fixed-and-conventional-dentures
#8
M M M Michelon, A T Posch, H R Sampaio-Filho, E J V Lourenco, D M Telles
PURPOSE: The purpose of this in vitro study was to compare the stability of removable implant-supported maxillary overdentures with fixed complete dentures and conventional dentures. METHODS: Four types of complete dentures were tested: conventional complete dentures; overdentures retained by a male resilient attachment system; overdentures retained by a combination of clip bar and attachment system; and fixed complete dentures. Each group was placed in the posterior and anterior region and the stability was recorded by measuring the vertical displacement of the prosthesis...
July 19, 2018: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/30025000/interventions-to-maintain-locator-retained-mandibular-overdentures-on-both-external-hex-and-internal-connection-implants-a-retrospective-study
#9
Lucia Fernandez-Estevan, Javier Montero, Eduardo J Selva Otaolaurruchi, Maria Fernanda Sola Ruiz
PURPOSE: To quantify the rate of maintenance interventions of mandibular prostheses: complete dentures and overdentures retained by two implants, with either internal hex or external hex connections. MATERIALS AND METHODS: This study analyzed patients with edentulous mandibles treated with distinct treatment protocols: a control group received complete dentures; a second group received Locator-retained overdentures supported by two external hex connection implants; and a third group received overdentures supported by internal hex connection implants...
July 2018: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/30024991/influence-of-rigid-bar-and-nonrigid-double-crown-attachments-on-maxillary-implant-overdentures-an-in-vitro-study-with-differential-bone-quality
#10
Toru Kimura, Tsung-Chieh Yang, Yoshinobu Maeda
PURPOSE: To evaluate the bending strain exerted on a maxillary implant overdenture supported by rigid bar and nonrigid double crown connectors in models of high- and low-quality bone. MATERIALS AND METHODS: Four implants were embedded in acrylic resin models of an edentulous maxilla simulating good- and poor-quality bone at the canine and second premolar regions bilaterally. A bar (cross-section dimension: 5 × 5 mm; bilateral distal extension: 10 mm) and double crown connectors with a metal framework (same morphology as the bar) were attached to these implants and placed under a constant 49 N vertical load at the anterior and cantilever regions of both superstructures...
July 2018: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/30024990/effects-of-low-profile-stud-attachment-configurations-on-stress-distribution-characteristics-of-implant-retained-overdentures
#11
Emre Tokar, Bulent Uludag
PURPOSE: Implant-retained mandibular overdentures are a proven treatment modality for edentulous patients. Low-profile stud attachments may allow divergence between the abutments up to 40 degrees. The purpose of this study was to investigate load transfer characteristics of various locations and nylon male configurations of low-profile stud attachment-retained overdentures. MATERIALS AND METHODS: Three tapered dental implants were placed into three photoelastic mandibular models...
July 2018: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/29989109/effect-of-implant-number-on-the-movement-of-mandibular-implant-supported-overdentures-under-biting-force-an-in-vitro-study
#12
Xin Zhang, Wei Liu, Hai Qing, Xibo Pei, Junyu Chen, Jian Wang
OBJECTIVE: Many studies have investigated the effect of implant number on the performance of implant-supported overdentures (ISO), but few have focused on denture movement. This in-vitro study aims to investigate the influence of implant number on the movement of mandibular ISO under biting force. METHOD AND MATERIALS: An edentulous mandibular cast and 12 overdentures (n = 12) were fabricated, and a locator attachment system with blue nylon inserts was chosen for this study...
2018: Quintessence International
https://www.readbyqxmd.com/read/29977022/are-uk-graduates-equipped-with-the-skill-set-required-to-meet-the-demands-of-the-uk-s-edentulous-population
#13
H Mather, M Thomason, J Ellis
As the UK witnesses a decline in the number of edentulous adults, there is a simultaneous reduction in the number of cases available to undergraduate dental students for the teaching of complete dentures. When edentulous adults are unable to function with conventional complete dentures, particularly pertaining to the mandibular denture, an implant-supported mandibular overdenture has been evidenced as the gold standard for edentulous patients. The evidence in favour of mandibular implant-supported overdentures is one of the most robust evidence bases for any clinical treatment and similarly it has been shown that undergraduate students are equally as capable in the provision of implant-supported overdentures as experienced prosthodontists...
July 13, 2018: British Dental Journal
https://www.readbyqxmd.com/read/29961625/retention-force-and-deformation-of-an-innovative-attachment-model-for-mini-implant-retained-overdentures
#14
Mariana L C Valente, Marcos V W Shimano, José A M Agnelli, Andréa C Dos Reis
STATEMENT OF PROBLEM: The gradual loss of retention and the need for periodic replacement of attachment-system components are the most frequent complications in implant-supported overdentures. PURPOSE: The purpose of this in vitro study was to develop a new attachment system for overdentures with polymeric materials and compare its retention and deformation with a conventional O-ring attachment system. MATERIAL AND METHODS: A matrix with 2 mini-implants with ball abutments was used to simulate the mandibular border during a fatigue resistance test...
June 29, 2018: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/29953562/investigation-of-clinical-and-laboratory-wear-in-locator-supported-implant-retained-overdentures
#15
Sebastian Hahnel, Christos Alamanos, Sibylle Schneider-Feyrer, Matthias Stöckle, Martin Rosentritt
PURPOSE: To investigate the mechanical properties and wear of nylon inserts and abutments in Locator-retained, implant-supported overdentures (L-IODs). MATERIALS AND METHODS: Clinical wear of inserts and abutments was qualitatively rated in a group of 16 patients with L-IODs. The inserts were also subjected to microscopic analysis, differential scanning calorimetry (DSC), and thermal gravimetric analysis (TGA). RESULTS: Wear was identified in almost all inserts and abutments...
July 2018: International Journal of Prosthodontics
https://www.readbyqxmd.com/read/29894548/retention-and-stability-of-rigid-telescopic-and-milled-bar-attachments-for-implant-supported-maxillary-overdentures-an-in-vitro-study
#16
Moustafa Abdou ELsyad, Tarek Ahmed Soliman, Ahmed Khalifa Khalifa
PURPOSE: This study aimed to evaluate and compare the retention and stability of rigid telescopic and milled bar attachments for implant-supported maxillary overdentures. MATERIALS AND METHODS: An acrylic resin model of the edentulous maxilla without alveolar undercuts was fabricated, and four implants were inserted in the canine and second premolar areas of the model. Two experimental overdentures were constructed and connected to the model with either rigid telescopic (RTA) or milled bar (MBA) attachments...
September 2018: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/29852211/long-term-changes-in-oral-health-related-quality-of-life-over-a-period-of-5-years-in-patients-treated-with-narrow-diameter-implants-a-prospective-clinical-study
#17
Daniel R Reissmann, Norbert Enkling, Rim Moazzin, Marius Haueter, Andreas Worni, Martin Schimmel
OBJECTIVES: The aim of this study was to assess long-term changes in oral health-related quality of life (OHRQoL) over a period of 5 years in patients treated with narrow diameter implants (NDI) in the mandible for support of an overdenture. METHODS: In this prospective clinical study, a consecutive sample of 20 edentulous patients who had worn sufficient complete dentures for at least 12 weeks was provided with four immediately loaded one-piece titanium NDIs in the mandible...
August 2018: Journal of Dentistry
https://www.readbyqxmd.com/read/29807963/evaluation-of-predictability-of-suitable-implant-lengths-as-related-to-accurate-treatment-planning-using-recent-roentgenographic-measures-a-key-to-success
#18
Suraj Suvarna, Ravishek K Singh, Renu B Pachar, Sachin Kundra, Sankalp Arya, Lata K Mehta
BACKGROUND AND AIM: Selection of suitable length of dental implants is very subjective and largely depends on clinical evidences and operator's expertise. The present study was aimed to assess the role of cone beam computed tomography (CBCT) and cephalograms as far as the selection of right implant length is concerned. MATERIALS AND METHODS: The study includes 220 patients for whom radiographic and follow-up records were obtained. There were 105 males and 115 females in the age range of 22 to 58 years...
May 1, 2018: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/29797848/prosthetic-rehabilitation-with-implant-supported-mandibular-overdenture-after-partial-glossectomy-and-radiation-therapy-a-case-report
#19
E Rissa, T Kurki, J Laine, T Närhi
Implant-supported overdenture is a well-established treatment option for many patients who have functional problems with conventional dentures. It may be primary choice for patients with altered jaw anatomy, neuromuscular disorders, pronounced gag reflex, severe residual ridge resorption and oral tissue defects. In this article we describe a case report, where tongue cancer patients occlusion was rehabilitated with an implantretained overdenture. In 2001 patient was operated for squamous cell carcinoma on the left side of the tongue...
May 30, 2018: European Journal of Prosthodontics and Restorative Dentistry
https://www.readbyqxmd.com/read/29779182/locator%C3%A2-versus-ceramic-electroplated-double-crown-attachments-a-prospective-study-on-the-intraindividual-comparison-of-implant-supported-mandibular-prostheses
#20
Silvia Brandt, Jan Brandt, Ali-Reza Ketabi, Hans-Christoph Lauer, Anna Kunzmann
OBJECTIVES: Implant-supported overdentures are an established dental treatment mode. The aim of this prospective study was and interindividual comparison of patient satisfaction with restorations retained by a prefabricated and thus inexpensive attachment system (Locator®) or with a technologically complex and thus expensive attachment system (ceramic/electroplated double crowns) with similar retentive performance. MATERIALS AND METHODS: Twelve patients received a Locator and a double-crown prosthesis in a crossover study for test periods of 3 months each...
May 19, 2018: Clinical Oral Investigations
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