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Peri-implantitis

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https://www.readbyqxmd.com/read/29342179/the-polymethoxy-flavonoid-sudachitin-suppresses-inflammatory-bone-destruction-by-directly-inhibiting-osteoclastogenesis-due-to-reduced-ros-production-and-mapk-activation-in-osteoclast-precursors
#1
Yoko Ohyama, Junta Ito, Victor J Kitano, Jun Shimada, Yoshiyuki Hakeda
Inflammatory bone diseases, including rheumatoid arthritis, periodontitis and peri-implantitis, are associated not only with the production of inflammatory cytokines but also with local oxidative status, which is defined by intracellular reactive oxygen species (ROS). Osteoclast differentiation has been reported to be related to increased intracellular ROS levels in osteoclast lineage cells. Sudachitin, which is a polymethoxyflavone derived from Citrus sudachi, possesses antioxidant properties and regulates various functions in mammalian cells...
2018: PloS One
https://www.readbyqxmd.com/read/29341335/osteogenic-efficacy-of-bmp-2-mixed-with-hydrogel-and-bone-substitute-in-peri-implant-dehiscence-defects-in-dogs-16%C3%A2-weeks-of-healing
#2
Jae-Kook Cha, Ui-Won Jung, Daniel S Thoma, Christoph H F Hämmerle, Ronald E Jung
OBJECTIVES: The objective of this study was to determine the effect of bone morphogenetic protein-2 (BMP-2) mixed with either polyethylene glycol hydrogel or synthetic bone substitute (SBS) on new bone formation in peri-implant dehiscence defects after 16 weeks of healing. MATERIALS AND METHODS: A guided bone regeneration procedure was performed in box-type peri-implant defects that were surgically prepared in six beagle dogs. The following four experimental groups were used (i) control (no graft), (ii) SBS+hydrogel, (iii) SBS+BMP-2/hydrogel and (iv) BMP-2/SBS+hydrogel...
January 17, 2018: Clinical Oral Implants Research
https://www.readbyqxmd.com/read/29340634/efficient-decellularization-for-bovine-pericardium-with-extracellular-matrix-preservation-and-good-biocompatibility
#3
Ning Li, Yang Li, Dejun Gong, Cuiping Xia, Xiaohong Liu, Zhiyun Xu
OBJECTIVES: In this study, we sought to explore an efficient decellularization protocol for bovine pericardia with better extracellular matrix preservation and good biocompatibility. METHODS: Bovine pericardia were decellularized by sodium dodecyl sulphate (SDS), SDS + sodium deoxycholate (SD), Triton X-100 (TX), TX + SD (TS), freeze-thaw cycles + SDS + SD (FSS) and freeze-thaw cycles + TX + SD (FTS), respectively. Untreated pericardia were used as native control...
January 10, 2018: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/29340353/clinical-performance-of-one-piece-screw-retained-implant-crowns-based-on-hand-veneered-cad-cam-zirconia-abutments-after-a-mean-follow-up-period-of-2-3-years
#4
Nicole Schnider, Fiona Alena Forrer, Urs Brägger, Stefan Paul Hicklin
PURPOSE: The aim of this study was to evaluate the clinical performance of one-piece, screw-retained implant crowns based on hand-veneered computer-aided design/computer-aided manufacture (CAD/CAM) zirconium dioxide abutments with a crossfit connection at least 1 year after insertion of the crown. MATERIALS AND METHODS: Consecutive patients who had received at least one Straumann bone level implant and one-piece, screw-retained implant crowns fabricated with CARES zirconium dioxide abutments were reexamined...
January 2018: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/29340349/prevalence-of-dental-implants-and-evaluation-of-peri-implant-bone-levels-in-patients-presenting-to-a-dental-school-a-radiographic-cross-sectional-2-year-study
#5
Eylem Ayhan Alkan, Lian Ping Mau, John Schoolfield, Gary F Guest, David L Cochran
PURPOSE: To evaluate the number of patients with dental implants who present to a dental school clinic for screening and to report the prevalence of peri-implant bone level change detected on digital panoramic radiographs of those subjects. MATERIALS AND METHODS: Patient screening files for 9,422 patients over a 2-year period were examined to see how many patients presented with dental implants. Those patients with at least one implant were further evaluated by measuring the bone level on the mesial and distal sides of the implant using the screening radiograph...
January 2018: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/29340348/peri-implant-tissues-and-patient-satisfaction-after-treatment-of-vertically-augmented-atrophic-posterior-mandibles-with-intraoral-onlay-block-bone-grafts-a-retrospective-3-year-case-series-follow-up-study
#6
Amparo Aloy-Prósper, David Peñarrocha-Oltra, Maria Peñarrocha-Diago, Federico Hernández-Alfaro, Miguel Peñarrocha-Diago
PURPOSE: To evaluate the peri-implant soft and hard tissues of dental implants placed in vertically regenerated posterior mandibles with intraoral onlay block bone grafts and patient satisfaction at 3-year follow-up. MATERIALS AND METHODS: A retrospective study of patients with dental implants placed in posterior mandibular sites vertically augmented with intraoral onlay block bone grafts was carried out between 2005 and 2009 at the University of Valencia. The outcomes assessed at the 3-year follow-up visit were the peri-implant soft tissues (Plaque Index and Bleeding Index, probing depth, keratinized mucosa width, and recession), implant survival and success rates, marginal bone loss, and patient satisfaction...
January 2018: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/29340344/biomechanical-comparison-of-different-implant-inclinations-and-cantilever-lengths-in-all-on-4-treatment-concept-by-three-dimensional-finite-element-analysis
#7
Oguz Ozan, Sevcan Kurtulmus-Yilmaz
PURPOSE: The aim of this study was to evaluate the effect of implant inclination and cantilever length on the stress distribution in mandibular cortical bone, implant, abutment, prosthetic framework, and prosthetic screw via three-dimensional (3D) finite element analysis (FEA). MATERIALS AND METHODS: Four different finite element models (0-0, 17-17, 30-30, 45-30) were designed according to the tilting angle (0, 17, 30, and 45 degrees) of the posterior implant and angle of multiunit abutments (0, 17, and 30 degrees)...
January 2018: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/29340343/what-is-the-impact-of-epstein-barr-virus-in-peri-implant-infection
#8
Luigi Canullo, Paolo Pesce, Daniele Botticelli, Ugo Covani, Sasha Jankovic, Tanja Jovanovic, Mia Rakic
PURPOSE: To compare the qualitative and quantitative profile of Epstein-Barr virus (EBV) at external and internal implant surfaces between participants with peri-implantitis and healthy peri-implant tissues and to quantitatively assess the relation between EBV and periopathogens inside the microbiologic profile associated with peri-implantitis. MATERIALS AND METHODS: Microbiologic specimens were retrieved from 84 patients wearing 190 implants to estimate the levels of EBV and 10 periopathogens in the peri-implant pocket and internal-implant connection using quantitative polymerase chain reaction...
January 2018: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/29339843/distal-radius-re-fracture-with-bending-of-implant-and-neurovascular-compromise
#9
Rafiq Kanji, James Nutt, Spiros Stavropoulos, Ahmed Elmorsy, Hank J Schneider
Peri-implant fractures of the wrist are uncommon, and usually present as stress fractures distal to the site of the implant. We report an unusual case where the radius has fractured beneath a plate, causing bending and deformity of the implant. This prevented reduction of the fracture under sedation, so urgent intervention became necessary due to neurovascular compromise.
November 2017: Journal of Clinical Orthopaedics and Trauma
https://www.readbyqxmd.com/read/29336173/genome-analysis-and-clinical-implications-of-the-bacterial-communities-in-early-biofilm-formation-on-dental-implants-restored-with-titanium-or-zirconia-abutments
#10
Flávia Correa Raffaini, Alice Ramos Freitas, Thalisson Saymo Oliveira Silva, Tarsis Cavagioni, Jessica Felix Oliveira, Rubens Ferreira Albuquerque Junior, Vinícius Pedrazzi, Ricardo Faria Ribeiro, Cássio do Nascimento
This cross-sectional study aimed to identify and quantify up to 42 target species colonizing the early biofilm of dental implants restored with titanium or zirconia abutments. A total of 720 samples from 20 healthy individuals were investigated. Biofilm samples were collected from the peri-implant sulci, inner parts of implants, abutment surfaces and prosthetic crowns over a functioning period of 30 days. Checkerboard DNA-DNA hybridization was used for microbial detection and quantitation. Clinical characteristics (probing depth, bleeding on probing, clinical attachment level and marginal bone loss) were also investigated during the monitoring period...
January 16, 2018: Biofouling
https://www.readbyqxmd.com/read/29332154/the-influence-of-systemically-or-locally-administered-mesenchymal-stem-cells-on-tissue-repair-in-a-rat-oral-implantation-model
#11
Miya Kanazawa, Ikiru Atsuta, Yasunori Ayukawa, Takayoshi Yamaza, Ryosuke Kondo, Yuri Matsuura, Kiyoshi Koyano
BACKGROUND: Multipotent mesenchymal stem cells (MSCs) are used clinically in regenerative medicine. Our previous report showed systemically injected MSCs improved peri-implant sealing and accelerated tissue healing. However, the risks of systemic MSC administration, including lung embolism, must be considered; therefore, their local application must be assessed for clinical safety and efficacy. We investigated differences in treatment effect between local and systemic MSC application using a rat oral implantation model...
January 13, 2018: International Journal of Implant Dentistry
https://www.readbyqxmd.com/read/29331021/onset-progression-and-resolution-of-experimental-peri-implant-mucositis-at-different-abutment-surfaces-a-randomized-controlled-two-center-study
#12
F Schwarz, J Becker, C Sara, D Hazar, T Iglhaut, G Iglhaut
OBJECTIVES: To assess the onset, progression and resolution of experimentally induced peri-implant mucositis lesions at abutments with different microstructures in humans. MATERIAL & METHODS: In a randomized, controlled, interventional two-center study, a total of 28 patients had received 28 target implants and were randomly allocated to either partially microgrooved- (test) or machined (control) healing abutments. The study was accomplished in 3 phases, including a wound healing period (WH) following implant placement (12 weeks), a plaque exposure phase (EP - 21 days) and a resolution phase (RP - 16 weeks)...
January 13, 2018: Journal of Clinical Periodontology
https://www.readbyqxmd.com/read/29330027/selective-estrogen-receptor-modulator-ormeloxifene-suppresses-embryo-implantation-via-inducing-mir-140-and-targeting-insulin-like-growth-factor-1-receptor-in-rat-uterus
#13
Vijay K Sirohi, Kanchan Gupta, Rohit Kumar, Vinay Shukla, Anila Dwivedi
Ormeloxifene, the non-steroidal SERM contraceptive, inhibits endometrial receptivity and embryo implantation via countering nidatory estrogen. However, the molecular mechanism of ormeloxifene action responsible for its contraceptive efficacy still remains unclear. Herein, we aimed to identify the miRNAs modulated under the influence of ormeloxifene and to explore their role in endometrial receptivity and embryo implantation. By doing microRNA sequencing analysis, a total of 168 miRNAs were found to be differentially expressed in uterine tissue of ormeloxifene-treated rats, on day 5 (10:00 h) of pregnancy i...
January 9, 2018: Journal of Steroid Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/29329255/peri-implant-behavior-of-sloped-shoulder-dental-implants-used-for-all-on-four-protocols-an-histomorphometric-analysis-in-dogs
#14
Jose Luis Calvo Guirado, Aldo Fabian Lucero-Sánchez, Ana Boquete Castro, Marcus Abboud, Sergio Gehrke, Manuel Fernández Dominguez, Rafael Arcesio Delgado Ruiz
The aim of this study was to evaluate the soft tissue thickness and marginal bone loss around dental implants with sloped micro-threaded shoulder (35° angle) in comparing with conventional design, inserted 35° degrees angulated in post extraction sockets and immediate loaded with temporary prosthesis simulating the all-on-four protocol. Materials and Methods: Six fox hound dogs received forty-eight post extraction dental implants with the same diameter and length (Medentika, Germany), but with different neck configurations...
January 12, 2018: Materials
https://www.readbyqxmd.com/read/29326047/periodontal-status-of-tooth-adjacent-to-implant-with-peri-implantitis
#15
Cheng-En Sung, Cheng-Yang Chiang, Hsien-Chung Chiu, Yi-Shing Shieh, Fu-Gong Lin, Earl Fu
OBJECTIVES: To evaluate the relationship between peri-implantitis and the periodontal health of the adjacent tooth, the periodontal status of the teeth adjacent and contralateral to the implants with and without peri-implantitis. METHODS: Fifty-three subjects with existing dental implants and chronic periodontitis were examined in this cross-sectional study. Seventy implants were categorized into peri-implantitis (n = 42) and healthy/mucositis (n = 28) groups...
January 8, 2018: Journal of Dentistry
https://www.readbyqxmd.com/read/29323741/stainless-steel-wear-debris-of-a-scoliotic-growth-guidance-system-has-little-local-and-systemic-effect-in-an-animal-model
#16
Vaneet Singh, Jeremy Rawlinson, Nadim Hallab
Options to treat early-onset scoliosis include guided-growth systems with sliding action between rods and pedicle screws. The wear was previously measured in an in vitro test, and in this in vivo rabbit model, we evaluated the local and systemic biological response to the stainless steel debris. Compared to the previous study, a relatively higher volume of representative wear particles with a median particle size of 0.84 µm were generated. Bolus dosages were injected into the epidural space at L4-L5 for a minimum of 36 rabbits across three treatment groups (negative control, 1...
January 11, 2018: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/29314191/prominence-of-scientific-publications-toward-peri-implant-complications-in-implantology-a-bibliometric-analysis-using-the-h-classics-method
#17
Ho-Sheng Chiang, Ren-Yeong Huang, Pei-Wei Weng, Lian-Ping Mau, Yi-Wen Cathy Tsai, Ming-Pang Chung, Chi-Hsiang Chung, Hsiao-Wen Yeh, Yi-Shing Shieh, Wan-Chien Cheng
BACKGROUND: Current bibliometric analyses of the evolving trends in research scope category across different time periods using the H-classics method in implantology are considerably limited. OBJECTIVE: The purpose of this study was to identify the classic articles in implantology to analyze bibliometric characteristics and associated factors in implantology for the past four decades. METHOD: H-Classics in implantology were identified within four time periods between 1977 and 2016, based on the h-index from the Scopus® database...
January 3, 2018: Journal of Oral Rehabilitation
https://www.readbyqxmd.com/read/29313133/influence-of-subcrestal-implant-placement-compared-with-equicrestal-position-on-the-peri-implant-hard-and-soft-tissues-around-platform-switched-implants-a-systematic-review-and-meta-analysis
#18
REVIEW
Cristina Valles, Xavier Rodríguez-Ciurana, Marco Clementini, Mariana Baglivo, Blanca Paniagua, Jose Nart
AIM: The aim of this article is to systematically review the effect of subcrestal implant placement compared with equicrestal position on hard and soft tissues around dental implants with platform switch. MATERIAL AND METHODS: A manual and electronic search (National Library of Medicine and Cochrane Central Register of Controlled Trials) was performed for animal and human studies published up to December 2016. Primary outcome variable was marginal bone level (MBL) and secondary outcomes were crestal bone level (CBL), soft tissue dimensions (barrier epithelium, connective tissue, and peri-implant mucosa), and changes in the position of soft tissue margin...
January 8, 2018: Clinical Oral Investigations
https://www.readbyqxmd.com/read/29306079/spatial-variation-of-bone-biomechanical-properties-around-a-dental-implant-using-nanoindentation-a-case-study
#19
Hyung-In Yoon, Min-Jeong Jeon, Hye-Lee Kim, Do-Gyoon Kim, Jung-Suk Han
The aim of the study was to evaluate the spatial variations in the biomechanical properties of the bone around the implants retrieved from human subjects due to fixture head fracture after almost 20 years of loading. The implant-in-bone specimens were prepared for the histomorphometry and nanoindentation test to measure the bone-to-implant contact ratio (BIC ratio) and elastic modulus (E) of peri-implant bone. The indentations were performed in the up, center, down, and away regions of the bone tissues within all the thread spaces...
December 28, 2017: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/29303864/peripheral-giant-cell-granuloma-associated-with-dental-implants
#20
Antonio Scarano, Carmen Lorusso, Carmen Mortellaro, Luisa Limongelli, Angela Tempesta, Gianfranco Favia
Peripheral giant cell granuloma (PGCG) is a nonneoplastic lesion of the oral mucosa arising on the buccal or lingual attached gingiva or alveolar mucosa and the crest of the edentulous alveolar ridge and contains numerous giant cells. This case series describes 3 cases regarding the clinical and surgical management of PGCG associated with dental implants. MATERIALS AND METHODS: This case series presents 3 patients, mean age 36 years, who showed a pedunculated painless lesion associated with dental implants that radiographically appeared as an osseous rarefaction corresponding the implants...
January 4, 2018: Journal of Craniofacial Surgery
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