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Peri-implant bone

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https://www.readbyqxmd.com/read/28437366/the-impact-of-residual-subgingival-cement-on-biological-complications-around-dental-implants-a-systematic-review
#1
Alessandro Quaranta, Zhuo Wei Lim, Joyce Tang, Vittoria Perrotti, Jonathan Leichter
OBJECTIVES: To perform a systematic review on the impact of residual subgingival cement on peri-implant diseases and crestal bone loss. MATERIAL AND METHODS: MEDLINE, SCOPUS, ISI Web of Knowledge and Cochrane Central Register of Controlled Trials (CENTRAL) databases were used to identify articles published without time limits. RESULTS: A total of 6 articles were selected for a total of 389 patients (687 implants). The studies were heterogeneous and had a moderate-to-high risk of bias, but met the inclusion criteria...
April 21, 2017: Implant Dentistry
https://www.readbyqxmd.com/read/28429394/immediate-implant-placement-and-restoration-in-the-anterior-maxilla-tissue-dimensional-changes-after-2-5-year-follow-up
#2
Himanshu Arora, Nabil Khzam, David Roberts, William L Bruce, Saso Ivanovski
BACKGROUND: Immediate implant placement followed by an immediate restoration has proven to be a viable technique in the anterior maxillary region. PURPOSE: This prospective study evaluated the mid-long term (2-5 years) tissue changes around immediately placed and restored implants in the anterior maxilla using flapless surgery and simultaneous hard tissue augmentation. MATERIALS AND METHODS: Thirty AstraTech implants were immediately placed in 30 patients, followed by the delivery of an immediate provisional restoration on the same day...
April 21, 2017: Clinical Implant Dentistry and related Research
https://www.readbyqxmd.com/read/28408125/influence-of-lateral-medial-sinus-width-on-no-grafting-inlay-osteotome-sinus-augmentation-outcomes
#3
Xiaohui Cheng, Xiucheng Hu, Shuangquan Wan, Xiachen Li, Yiming Li, Feilong Deng
PURPOSE: Intrasinus new bone formation (BF) has been observed after no-grafting osteotome sinus augmentation, and it is hypothesized to be influenced by the dimensions of the maxillary sinus. The aim of this clinical trial is to evaluate the influence of lateral-medial sinus width (SW) on no-grafting osteotome sinus augmentation outcomes using cone beam computed tomography. PATIENTS AND METHODS: All patients recruited for this prospective study were treated with no-grafting osteotome sinus augmentation with simultaneous implant placement...
March 18, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28407420/dental-biofilm-infections-an-update
#4
REVIEW
Tove Larsen, Nils-Erik Fiehn
Teeth are colonized by oral bacteria from saliva containing more than 700 different bacterial species. If removed regularly, the dental biofilm mainly comprises oral streptococci and is regarded as resident microflora. But if left undisturbed, a complex biofilm containing up to 100 bacterial species at a site will build up and may eventually cause development of disease. Depending on local ecological factors, the composition of the dental biofilm may vary considerably. With access to excess carbohydrates, the dental biofilm will be dominated by mainly gram-positive carbohydrate-fermenting bacteria causing demineralization of teeth, dental caries, which may further lead to inflammation and necrosis in the pulp and periapical region, i...
April 2017: APMIS: Acta Pathologica, Microbiologica, et Immunologica Scandinavica
https://www.readbyqxmd.com/read/28402357/immediate-functional-loading-of-one-piece-zirconia-implants-in-a-full-arch-maxillary-restoration-a-five-year-case-report
#5
Burghard Peter
Immediate loading has proven to be a predictable modality for restorations with titanium dental implants. An increasing number of articles indicate that zirconia implants might osseointegrate to a similar extent in this context. This 5-year case report describes an outpatient maxillary restoration with eight immediately loaded zirconia implants. Implantation followed extensive bone augmentation. At the 5-year follow-up, all implants were still well osseointegrated clinically and radiologically. No major bone loss or peri-implantitis had occurred in spite of temporary insufficient patient compliance...
May 2017: International Journal of Periodontics & Restorative Dentistry
https://www.readbyqxmd.com/read/28402353/peri-implant-soft-tissue-stability-after-single-implant-restorations-using-either-guided-bone-regeneration-or-a-connective-tissue-graft-a-randomized-clinical-trial
#6
Chiara D'Elia, Nicola Baldini, Edoardo Ferrari Cagidiaco, Giacomo Nofri, Cecilia Goracci, Massimo de Sanctis
The purpose of the present study was to compare two different surgical procedures, connective tissue graft and guided bone regeneration, when applied in conjunction with implant placement. Probing pocket depth and the recession depth were recorded at the implant site after crown placement (T₁) and at the 1-year follow-up (T₂), while the keratinized tissue height and the buccal mucosa thickness were recorded at three different time points: at the time of implant surgery (T₀), after crown placement, and at the 1-year follow-up...
May 2017: International Journal of Periodontics & Restorative Dentistry
https://www.readbyqxmd.com/read/28402342/survival-rates-and-bone-and-soft-tissue-level-changes-around-one-piece-dental-implants-placed-with-a-flapless-or-flap-protocol-8-5-year-results
#7
Stuart J Froum, Ismael Khouly
The purpose of the current study was to determine the survival rates and to measure marginal bone changes and peri-implant conditions 8.5 years after placement of one-piece implants with an anodically oxidized surface (AOS). A total of 52 subjects who received a one-piece implant with an AOS using a flapless or flap protocol and completed a previous randomized clinical trial were contacted for a recall visit 8.5 years after implant placement (T8.5). Implant success and survival rates, probing pocket depth (PPD), presence of bleeding on probing (BoP), papilla level, and incidence of complications and peri-implant disease were assessed by a single, blinded examiner...
May 2017: International Journal of Periodontics & Restorative Dentistry
https://www.readbyqxmd.com/read/28392637/long-term-results-of-impaction-bone-grafting-using-a-synthetic-graft-apapore-in-revision-hip-surgery
#8
V Kumar, M Ricks, S Aboul-Enin, D G Dunlop
INTRODUCTION: Impaction Bone grafting (IBG) in Revision THR is challenging and places demands on allograft stores. Identifying a potential synthetic replacement that works in the longer term was the aim of this study. METHODS: We retrospectively reviewed 21 sequential patients who had undergone revision THR using IBG. They were randomised to receive either combined allograft and synthetic graft or Allograft alone. Among the surviving 15 patients, there were total of 25 procedures were carried out...
June 2017: Journal of Orthopaedics
https://www.readbyqxmd.com/read/28384949/comparative-study-of-surgical-management-of-fracture-neck-of-femur-with-cemented-versus-uncemented-bipolar-hemiarthroplasty
#9
Y S Prashanth, M Niranjan
INTRODUCTION: There is evidence for use of cemented hemiarthroplasty resulting in greater anchoring and lesser peri prosthetic fracture. However, this procedure results in more haemodynamic instability and cardiopulmonary complications termed as 'cement reaction' or bone cement implantation syndrome. There has been a heightened interest among surgeons to compare cemented and uncemented hemiarthroplasty for fracture neck of femur. AIM: To compare cemented and uncemented hemiarthroplasty in terms of blood loss during the procedure, post-operative complications, mortality, functional recovery and long term clinical outcome...
February 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28380669/antibacterial-and-bioactive-coatings-on-titanium-implant-surfaces
#10
Anupama Kulkarni Aranya, Smruti Pushalkar, Minglei Zhao, Racquel Z LeGeros, Yu Zhang, Deepak Saxena
Various surface modifications have been tried for enhancing osseointegration of the dental implants like mechanical and/or chemical treatments and deposition of calcium phosphate coatings. The objective of this research was to develop calcium-phosphate based thin coatings with antibacterial and bioactive properties for potential application in dental implants. Titanium (Ti) discs were immersed in different calcifying solutions: CaP (positive control), F-CaP, Zn-CaP and FZn-CaP and incubated for 24 h. Negative control was uncoated Ti discs...
April 5, 2017: Journal of Biomedical Materials Research. Part A
https://www.readbyqxmd.com/read/28378530/guided-bone-regeneration-with-particulate-vs-block-xenogenic-bone-substitutes-a-pilot-cone-beam-computed-tomographic-investigation
#11
Goran I Benic, Daniel S Thoma, Ronald E Jung, Ignacio M Sanz, Silvan Unger, Antonio Cantalapiedra, Christoph H F Hämmerle
AIM: To test whether an equine bone substitute block used for guided bone regeneration (GBR) of peri-implant defects differs from bovine block or particulate bone substitutes regarding the hard and soft tissue contours of the augmented ridge. MATERIAL & METHODS: Two semi-saddle bone defects were prepared in each side of the mandible of eight dogs, and one titanium implant was inserted into every defect. The defects were randomly allocated to receive one of the following treatments: bone augmentation by GBR using (1) particulate deproteinized bovine bone mineral (DBBM) + a collagen membrane (CM), (2) block DBBM + CM, (3) equine bone substitute block + CM, and (4) empty controls...
April 4, 2017: Clinical Oral Implants Research
https://www.readbyqxmd.com/read/28373978/monitoring-the-changes-of-material-properties-at-bone-implant-interface-during-the-healing-process-in-vivo-a-viscoelastic-investigation
#12
Hsiang-Ho Chen, Wei-Yi Lai, Tze-Jian Chee, Ya-Hui Chan, Sheng-Wei Feng
The aim of this study was to monitor the changes of viscoelastic properties at bone-implant interface via resonance frequency analysis (RFA) and the Periotest device during the healing process in an experimental rabbit model. Twenty-four dental implants were inserted into the femoral condyles of rabbits. The animals were sacrificed immediately after implant installation or on day 14, 28, or 56 after surgery. Viscoelastic properties at bone-implant interface were evaluated by measuring the implant stability quotient (ISQ) using RFA and by measuring the Periotest values (PTVs) using the Periotest device...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28371086/immediate-implant-and-rehabilitation-based-on-all-on-4-concept-in-patients-with-generalized-aggressive-periodontitis-a-medium-term-prospective-study
#13
Sha Li, Ping Di, Yu Zhang, Ye Lin
BACKGROUND: Aggressive periodontitis renders a great challenge to the conventional implant due to the risks of infection and ongoing marginal bone loss (MBL). A study about full-arch immediate implant and restoration in patients with advanced generalized aggressive periodontitis (GAP) was not read, even though the All-on-4 concept has been proven to be predictable for edentulous patients. PURPOSE: This prospective study aimed to evaluate the feasibility and medium-term outcomes of immediate implant and rehabilitation based on the All-on-4 concept in patients with advanced GAP via clinical and radiographic analyses...
April 3, 2017: Clinical Implant Dentistry and related Research
https://www.readbyqxmd.com/read/28370489/volumetric-changes-and-peri-implant-health-at-implant-sites-with-or-without-soft-tissue-grafting-in-the-esthetic-zone-a-retrospective-case-control-study-with-a-5-year-follow-up
#14
Stefan P Bienz, Ronald E Jung, Vitor M Sapata, Christoph H F Hämmerle, Jürg Hüsler, Daniel S Thoma
OBJECTIVES: To evaluate the volumetric changes and peri-implant health at implant sites with and without previous soft tissue grafting over a 5-year observation period. MATERIAL AND METHODS: In 18 partially edentulous patients, dental implants were placed in the esthetic zone (15-25) with simultaneous guided bone regeneration, followed by submerged healing. During the healing phase, eight patients (test) received a subepithelial connective tissue graft, whereas 10 patients (control) did not receive any soft tissue augmentation...
March 29, 2017: Clinical Oral Implants Research
https://www.readbyqxmd.com/read/28368126/the-key-points-of-maintenance-therapy-for-dental-implants-a-literature-review
#15
Miha Pirc, Irina F Dragan
Dental implants require lifelong maintenance and care. Success is defined by biologic factors (presence of inflamed soft tissues surrounding dental implants and radiographic changes in the crestal bone levels) and mechanical factors (stability of the implant fixture and implant supported restoration, etc). Most implant failures are initiated by incipient stages of inflammatory processes, which lead to peri-mucositis and peri-implantitis. The evidence regarding the value of maintenance protocol regarding implants is sparse compared with the one for teeth...
April 2017: Compendium of Continuing Education in Dentistry
https://www.readbyqxmd.com/read/28359872/microbial-colonization-at-the-implant-abutment-interface-and-its-possible-influence-on-periimplantitis-a-systematic-review-and-meta-analysis
#16
REVIEW
Marco Tallarico, Luigi Canullo, Martina Caneva, Mutlu Özcan
PURPOSE: The aim of this systematic review and meta-analysis was to evaluate the microbial colonization at the implant-abutment interfaces (IAI) on bone-level implants and to identify possible association with peri-implant conditions. STUDY SELECTION: The focus question aimed to answer whether two-piece osseointegrated implants, in function for at least 1 year, in human, relate to higher bacterial count and the onset of periimplantitis, compared to healthy peri-implant conditions...
March 27, 2017: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/28358926/genetically-engineered-rat-gliomas-pdgf-driven-tumor-initiation-and-progression-in-tv-a-transgenic-rats-recreate-key-features-of-human-brain-cancer
#17
Nina P Connolly, Jesse A Stokum, Craig S Schneider, Tatsuya Ozawa, Su Xu, Rebeca Galisteo, Rudolph J Castellani, Anthony J Kim, J Marc Simard, Jeffrey A Winkles, Eric C Holland, Graeme F Woodworth
Previously rodent preclinical research in gliomas frequently involved implantation of cell lines such as C6 and 9L into the rat brain. More recently, mouse models have taken over, the genetic manipulability of the mouse allowing the creation of genetically accurate models outweighed the disadvantage of its smaller brain size that limited time allowed for tumor progression. Here we illustrate a method that allows glioma formation in the rat using the replication competent avian-like sarcoma (RCAS) virus / tumor virus receptor-A (tv-a) transgenic system of post-natal cell type-specific gene transfer...
2017: PloS One
https://www.readbyqxmd.com/read/28357643/raloxifene-but-not-alendronate-can-compensate-the-impaired-osseointegration-in-osteoporotic-rats
#18
Leonardo Perez Faverani, Tárik Ocon Braga Polo, Gabriel Ramalho-Ferreira, Gustavo Antonio Correa Momesso, Jaqueline Suemi Hassumi, Ana Cláudia Rossi, Alexandre Rodrigues Freire, Felippe Bevilacqua Prado, Eloá Rodrigues Luvizuto, Reinhard Gruber, Roberta Okamoto
OBJECTIVES: Alendronate and raloxifene, a bisphosphonate and a selective estrogen modulator, respectively, are established osteoporosis therapies. Current evidence suggests that simultaneous application of osteoporosis therapies modulates osseointegration. However, alendronate shows inconsistent findings and raloxifene has not been studied comprehensively. This study aimed to evaluate the bone dynamics and molecular and microstructural features at the peri-implant bone interface in osteoporotic rats...
March 29, 2017: Clinical Oral Investigations
https://www.readbyqxmd.com/read/28351289/bmp2-alters-osteogenesis-and-anti-inflammatory-profiles-of-mesenchymal-stem-cells-induced-by-microtextured-titanium-in-vitro
#19
Sharon L Hyzy, Rene Olivares-Navarrete, Sara Ortman, Barbara Boyan, Zvi Schwartz
OBJECTIVES: Microtextured titanium (Ti) induces osteoblast differentiation of mesenchymal stem cells (MSCs) in the absence of exogenous osteogenic factors; and high-energy surface modifications speed healing of microrough Ti implants. Bone morphogenetic protein-2 (BMP2) is used clinically to improve peri-implant bone formation and osseointegration but can cause inflammation and bone-related complications. Here, we determined whether BMP2 alters human MSC differentiation, apoptosis, and inflammatory factor production when grown on Ti implants with different surface properties...
March 29, 2017: Tissue Engineering. Part A
https://www.readbyqxmd.com/read/28349251/the-effect-of-magnesium-on-early-osseointegration-in-osteoporotic-bone-a-histological-and-gene-expression-investigation
#20
S Galli, M Stocchero, M Andersson, J Karlsson, W He, T Lilin, A Wennerberg, R Jimbo
Magnesium has a key role in osteoporosis and could enhance implant osseointegration in osteoporotic patients. Titanium implants impregnated with Mg ions were installed in the tibia of ovariectomized rats. The release of Mg induced a significant increase of bone formation and the expression of anabolic markers in the peri-implant bone. INTRODUCTION: The success of endosseous implants is highly predictable in patients possessing normal bone status, but it may be impaired in patients with osteoporosis...
March 27, 2017: Osteoporosis International
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