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Teeth implants

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https://www.readbyqxmd.com/read/28092094/comparison-and-evaluation-of-stresses-generated-by-rapid-maxillary-expansion-and-the-implant-supported-rapid-maxillary-expansion-on-the-craniofacial-structures-using-finite-element-method-of-stress-analysis
#1
Varun Jain, Tarulatha R Shyagali, Prabhuraj Kambalyal, Yagnesh Rajpara, Jigar Doshi
BACKGROUND: The study aimed to evaluate and compare the stress distribution and 3-dimensional displacements along the craniofacial sutures in between the Rapid maxillary Expansion (RME) and Implant supported RME (I-RME). METHODS: Finite element model of the skull and the implants were created using ANSYS software. The finite element model thus built composed of 537692 elements and 115694 nodes in RME model & 543078 elements and 117948 nodes with implants model. The forces were applied on the palatal surface of the posterior teeth to cause 5mm of transverse displacement on either side of the palatal halves, making it a total of 10mm...
December 2017: Progress in Orthodontics
https://www.readbyqxmd.com/read/28074591/variations-in-crestal-cortical-bone-thickness-at-dental-implant-sites-in-different-regions-of-the-jawbone
#2
Yi-Chun Ko, Heng-Li Huang, Yen-Wen Shen, Jyun-Yi Cai, Lih-Jyh Fuh, Jui-Ting Hsu
BACKGROUND: Dental implants have become reliable and predictable tools for treating missing teeth. The survival rate of dental implants is markedly influenced by the host bone quality and quantity of the jawbone. A better host bone provides higher initial stability of the dental implant, resulting in better osseointegration and a higher success rate. Host bone quality and quantity are determined by the crestal cortical bone thickness and inner cancellous bone density. OBJECTIVE: The purpose of this study was to determine the crestal cortical bone thickness at dental implant sites in different regions of the jawbone through the use of dental cone-beam computed tomographic (CBCT) images...
January 10, 2017: Clinical Implant Dentistry and related Research
https://www.readbyqxmd.com/read/28074124/involvement-of-blood-mononuclear-cells-in-the-infertility-age-associated-diseases-and-cancer-treatment
#3
REVIEW
Antonin Bukovsky
Blood mononuclear cells consist of T cells and monocyte derived cells. Beside immunity, the blood mononuclear cells belong to the complex tissue control system (TCS), where they exhibit morphostatic function by stimulating proliferation of tissue stem cells followed by cellular differentiation, that is stopped after attaining the proper functional stage, which differs among various tissue types. Therefore, the term immune and morphostatic system (IMS) should be implied. The TCS-mediated morphostasis also consists of vascular pericytes controlled by autonomic innervation, which is regulating the quantity of distinct tissues in vivo...
December 26, 2016: World Journal of Stem Cells
https://www.readbyqxmd.com/read/28072987/-a-pilot-clinical-study-of-immediate-provisionalization-with-a-chairside-computer-aided-design-and-computer-aided-manufacture-monolithic-crown-for-single-tooth-immediate-implant-placement
#4
J H Tian, P Di, Y Lin, Y Zhang, D H Wei, H Y Cui
Objective: To evaluate the primary clinical outcomes of immediate provisionalization with a monolithic crown utilizing a novel chairside computer aided design and computer aided manufacture (CAD/CAM) workflow for single tooth immediate implant placement. Methods: This pilot study was a prospective within-subjects design. Thirteen consecutive patients were included and diagnosed with untreatable single incisor or premolar with fine general and local anatomical conditions. The trial was conducted at Department of Implantology, Peking University School and Hospital of Stomatology, Beijing, between January 2016 and June 2016...
January 9, 2017: Zhonghua Kou Qiang Yi Xue za Zhi, Zhonghua Kouqiang Yixue Zazhi, Chinese Journal of Stomatology
https://www.readbyqxmd.com/read/28066993/developing-a-biomimetic-tooth-bud-model
#5
Elizabeth E Smith, Weibo Zhang, Nathan R Schiele, Ali Khademhosseini, Catherine K Kuo, Pamela C Yelick
A long-term goal is to bioengineer, fully functional, living teeth for regenerative medicine and dentistry applications. Biologically based replacement teeth would avoid insufficiencies of the currently used dental implants. Using natural tooth development as a guide, a model was fabricated using post-natal porcine dental epithelial (pDE), porcine dental mesenchymal (pDM) progenitor cells, and human umbilical vein endothelial cells (HUVEC) encapsulated within gelatin methacrylate (GelMA) hydrogels. Previous publications have shown that post-natal DE and DM cells seeded onto synthetic scaffolds exhibited mineralized tooth crowns composed of dentin and enamel...
January 8, 2017: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/28066875/evaluating-the-effects-of-consolidation-on-intrusion-and-retraction-using-temporary-anchorage-devices-a-fem-study
#6
Monica Namburi, Sleevaraju Nagothu, Chetan S Kumar, N Chakrapani, C H Hanumantharao, Supradeep K Kumar
BACKGROUND: Extraction of premolars and retracting the anterior teeth using mini-implants and anterior retraction hooks became advent now a day. In such treatments, consolidation of arches is not done in regular practice. So, the present study is concentrated on effects of consolidation in two implant and three implant combinations of retraction and intrusion. METHODS: A three-dimensional FEM model of maxillary teeth and periodontal ligament housed in the alveolar bone with the first premolars extracted is generated with appropriate number of elements and nodes...
December 2017: Progress in Orthodontics
https://www.readbyqxmd.com/read/28061791/incidence-of-pulp-sensibility-loss-of-anterior-teeth-after-paramedian-insertion-of-orthodontic-mini-implants-in-the-anterior-maxilla
#7
Jan Hourfar, Dirk Bister, Jörg A Lisson, Björn Ludwig
BACKGROUND: The aim of this retrospective investigation was to evaluate the incidence of loss to pulp sensibility testing (PST) of maxillary front teeth after paramedian (3 to 5 mm away from the suture) orthodontic mini-implant (OMI) insertion in the anterior palate. METHODS: A total of 284 patients (102 males, 182 females; mean age was 14.4 years (±8.8) years at time of OMI-Insertion) with a total of 568 OMIs (1.7 mm diameter, length 8 mm) were retrospectively investigated...
January 6, 2017: Head & Face Medicine
https://www.readbyqxmd.com/read/28060092/functional-reconstruction-of-nonsegmental-mandibular-defect-with-fresh-frozen-bone-graft-and-delayed-implants-placement
#8
Tommaso Bucci, Pier Francesco Nocini
The loss of teeth and the alveolar bone secondary to resection of mandibular tumors may lead to unfavorable esthetic and functional results with a significant impairment of mastication.The authors report a 53-year-old patient with recurrence of ameloblastoma who was submitted to marginal mandibulectomy. Bone defect was immediately reconstructed using fresh frozen bone graft and 9 months after reconstruction 3 dental implants were inserted in the grafted bone. After 6 months, dental rehabilitation was achieved using a fixed implant-supported prosthesis...
January 5, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28057509/promoting-bioengineered-tooth-innervation-using-nanostructured-and-hybrid-scaffolds
#9
S Kuchler-Bopp, A Larrea, L Petry, Y Idoux-Gillet, V Sebastian, A Ferrandon, P Schwinté, M Arruebo, N Benkirane-Jessel
: The innervation of teeth mediated by axons originating from the trigeminal ganglia is essential for their function and protection. Immunosuppressive therapy using Cyclosporine A (CsA) was found to accelerate the innervation of transplanted tissues and particularly that of bioengineered teeth. To avoid the CsA side effects, we report in this study the preparation of CsA loaded poly(lactic-co-glycolic acid) (PLGA) nanoparticles, their embedding on polycaprolactone (PCL)-based scaffolds and their possible use as templates for the innervation of bioengineered teeth...
January 2, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28050319/the-hidden-x-suture-a-technical-note-on-a-novel-suture-technique-for-alveolar-ridge-preservation
#10
Jung-Chul Park, Ki-Tae Koo, Hyun-Chang Lim
PURPOSE: The present study investigated the impact of 2 different suture techniques, the conventional crossed mattress suture (X suture) and the novel hidden X suture, for alveolar ridge preservation (ARP) with an open healing approach. METHODS: This study was a prospective randomized controlled clinical trial. Fourteen patients requiring extraction of the maxillary or mandibular posterior teeth were enrolled and allocated into 2 groups. After extraction, demineralized bovine bone matrix mixed with 10% collagen (DBBM-C) was grafted and the socket was covered by porcine collagen membrane in a double-layer fashion...
December 2016: Journal of Periodontal & Implant Science
https://www.readbyqxmd.com/read/28050317/association-between-dental-implants-in-the-posterior-region-and-traumatic-occlusion-in-the-adjacent-premolars-a-long-term-follow-up-clinical-and-radiographic-analysis
#11
Jae-Hong Lee, Helen Hye-In Kweon, Seong-Ho Choi, Young-Taek Kim
PURPOSE: The aim of this retrospective study was to determine the association between dental implants in the posterior region and traumatic occlusion in the adjacent premolars, using data collected during from 2002 to 2015. METHODS: Traumatic occlusion in the adjacent premolars was assessed by examining clinical parameters (bleeding on probing, probing pocket depth, fremitus, and tooth mobility) and radiographic parameters (loss of supporting bone and widening of the periodontal ligament space) over a mean follow-up of 5 years...
December 2016: Journal of Periodontal & Implant Science
https://www.readbyqxmd.com/read/28047321/tu-ab-bra-04-an-investigation-of-metal-artifact-effects-in-multi-modalities-development-of-mri-ct-heterogeneous-head-and-neck-phantom-for-mri-ct-registration
#12
M Lee, K Song, B Choe, T Suh
PURPOSE: The purpose of this investigation was to develop an CT-MR head and neck phantom which can investigate dose calculation differences between density-assigned MRI and CT, and to compare non-implant inserted registered MR-CT registered image with artifact reduced image of MR-CT registered image. It is to identify potential limitations related to dental implants of MR image and CT image and maximize the advantages to find interactive method to use registered image. METHODS: The phantom comprises half-circled shape which shaped to simulated the anatomical structures of a human head and neck...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28045197/oral-health-improvements-in-switzerland-over-20-years
#13
Cornelia Schneider, Elisabeth Zemp, Nicola U Zitzmann
While the time trends in oral health are favourable, differences still persist in dental status and in prosthetic dental restorations (PDR) between population subgroups. This study aimed to identify changes in oral health in Switzerland over two decades and to describe their relationship to sociodemographic factors in 2012. Swiss Health Surveys were conducted in 1992, 2002, and 2012. The mean number of missing teeth and the prevalence of PDR were calculated at each time point. Logistic regression analysis was performed to assess associations between the prevalence of PDR and sociodemographic factors...
January 3, 2017: European Journal of Oral Sciences
https://www.readbyqxmd.com/read/28042442/increasing-volume-of-vestibular-soft-tissues-in-flapless-implant-surgery-through-a-modified-connective-punch-technique-a-controlled-clinical-trial
#14
M Andreasi Bassi, C Andrisani, S Lico, F Silvestre, M Gargari, C Arcuri
PURPOSE: The aim of this article is to make a comparative assessment between the modification of the soft-tissue profile, around the healing cap screws (HCSs), following both the traditional flapless surgery (TFS) and a new modified flapless surgery, named Modified Connective Tissue Punch (MCTP) technique. MATERIALS AND METHODS: 8 patients (3M and 5F) (mean age 54.25±11.247 years) were enrolled in this study. Sixteen two-piece implants were placed on upper jaws, 2 for each patient, 8 with TFS and 8 with MCTP technique...
July 2016: Oral & Implantology
https://www.readbyqxmd.com/read/28042278/restorative-rehabilitation-in-a-patient-with-sports-trauma
#15
Haroon Rashid, Fahim Vohra, Graeme R Lillywhite
Sports trauma frequently involves insult to oral soft and hard tissues resulting in loss of tooth structure and tooth loss. Multiple sporting equipment's are employed to prevent irreversible damage to oro-facial structures, and to reduce the overall cost of treatment. However in the undesired consequence of loss of oral structures, multiple treatment options are utilized to restore, esthetics, comfort and function. Osseointegrated implant supported rehabilitation of oral structures in trauma cases provides highly predictable treatment outcomes along with preservation of remaining tissues...
October 2016: European Journal of Dentistry
https://www.readbyqxmd.com/read/28042277/distal-extension-mandibular-removable-partial-denture-with-implant-support
#16
Canan Bural, Begum Buzbas, Sebnem Ozatik, Gulsen Bayraktar, Yusuf Emes
This case report describes the fabrication of a distal extension removable partial denture (RPD) of a 65-year-old man with implant support. Loss of fibroelasticity of the peripheral tissues and reduced mandibular vestibular sulcular depth due to a previous surgical resection and radiotherapy at the right side were the main clinical factors that created difficulty for denture retention and stability. The fabrication of a mandibular RPD supported by anterior teeth and two bilaterally placed implants in the molar area to convert from Kennedy Class 1 design to Kennedy Class 3 implant-bounded RPD is reported...
October 2016: European Journal of Dentistry
https://www.readbyqxmd.com/read/28033066/clinical-immune-and-microbiome-traits-of-gingivitis-and-peri-implant-mucositis
#17
G P Schincaglia, B Y Hong, A Rosania, J Barasz, A Thompson, T Sobue, F Panagakos, J A Burleson, A Dongari-Bagtzoglou, P I Diaz
Tissues surrounding dental implants and teeth develop clinical inflammation in response to microbial stimuli. However, the literature suggests that differences exist in the microbial insult and inflammatory responses leading to gingivitis and peri-implant mucositis. In this pilot study, the authors use for the first time a systems biology approach to comprehensively evaluate clinical parameters, selected inflammatory markers, and the microbiome of subject-matched tooth and implant sites during native inflammation and in response to experimental plaque accumulation...
January 2017: Journal of Dental Research
https://www.readbyqxmd.com/read/28008430/surgical-and-prosthetic-dental-rehabilitation-through-a-complete-digital-workflow-a-case-report
#18
Panagiotis Tsirogiannis, Sascha Pieger, Stavros Pelekanos, Stefanos Kourtis
Several aspects of digital dentistry have recently been improved, including new materials, navigated implant placement, digital impression in combination with virtual articulation, and the computer-aided processes of designing and manufacturing of prosthetic restorations. In this case report, the prosthodontic treatment of a patient through a complete digital workflow is presented. A 39-year-old male patient presented for restoration of missing teeth in the posterior maxilla and mandible. In a single-tooth narrow gap (region 15), a Straumann NNC implant was placed by computer-assisted planning and navigation...
2016: International Journal of Computerized Dentistry
https://www.readbyqxmd.com/read/28005801/zygomatic-implant-subjected-to-immediate-loading-for-atrophic-maxilla-rehabilitation
#19
Pâmela Letícia Dos Santos, Gustavo Henrique Souza Silva, Fernanda Rayssa Da Silva Pereira, Raquel Damazia da Silva, Mirella Lindoso Gomes Campos, Thiago Borges Mattos, Jéssica Lemos Gulinelli
As life expectancy increases, a larger number of elderly people require dental health care attention for implant-supported rehabilitation, with the aim of restoring the function and aesthetics of the oral cavity. Most of these patients have lost their teeth long time ago, causing a severe bone resorption and maxillary sinus pneumatization. Therefore, the current study aims to demonstrate, through the description of the clinical case, the treatment with zygomatic implants as an option for treating severely atrophic maxillas...
November 2016: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28005779/a-new-approach-to-the-use-of-osseointegrated-implants-in-palate-obturator
#20
Laura Lago, Benito Rilo, Noelia Fernández-Formoso, Luis da Silva
Osseointegrated implants are regularly used for retention and stability of maxillofacial prosthesis, especially in palatal obturator with large defects and few remaining teeth. In these cases, loads that tissues receive from a prosthesis can cause bone resorption and thus enlarge the defect. Implants may help redistribute the loads on the perimplant bone crest and avoid exacerbating the defect. The authors present a case in which the palatal defect has increased overtime. After placement of a sealing prosthesis with implants, bone and mucosal tissues stability around the defect it is observed during 1 year of follow-up...
November 2016: Journal of Craniofacial Surgery
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