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Peri-implant bone

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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
#1
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/29329255/peri-implant-behavior-of-sloped-shoulder-dental-implants-used-for-all-on-four-protocols-an-histomorphometric-analysis-in-dogs
#2
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/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
#3
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
#4
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/29303758/response-of-soft-tissue-to-different-abutment-materials-with-different-surface-topographies-a-review-of-the-literature
#5
Feras Al Rezk, Georgia Trimpou, Hans-Christoph Lauer, Paul Weigl, Nadine Krockow
Soft tissue integration in the transmucosal zone of dental abutments supports the peri-implant tissues, improves esthetics, ensures soft tissue seal against microorganisms, and preserves crestal bone level. The aim of this literature review was to define the most favorable surface topography and macrodesign of the transmucosal zone of abutments to achieve optimal soft tissue seal. An electronic search of the PubMed/MEDLINE database was performed, seeking relevant English-language articles published between January 1, 2003, and October 11, 2014...
January 2018: General Dentistry
https://www.readbyqxmd.com/read/29288505/bone-response-to-functionally-loaded-two-piece-zirconia-implants-a-preclinical-histometric-study
#6
Simone F M Janner, Michael Gahlert, Dieter D Bosshardt, Stefan Roehling, Stefan Milz, Frank Higginbottom, Daniel Buser, David L Cochran
OBJECTIVE: To evaluate the bone response to a two-piece zirconia implant in comparison with a control titanium implant in the canine mandible 4 and 16 weeks after restoration. MATERIAL AND METHODS: Zirconia and titanium implants were alternately placed bilaterally in healed mandibular molar and premolar sites of five canines. Full-ceramic single-tooth restorations were cemented after 6 weeks of transmucosal healing, allowing for full functional loading of the implants...
December 30, 2017: Clinical Oral Implants Research
https://www.readbyqxmd.com/read/29283207/hard-tissue-volume-stability-of-guided-bone-regeneration-during-the-healing-stage-in-the-anterior-maxilla-a-clinical-and-radiographic-study
#7
Xi Jiang, Yu Zhang, Ping Di, Ye Lin
BACKGROUND: Guided bone regeneration (GBR) is currently the most widely used technique to reconstruct localized peri-implant bone defects. OBJECTIVES: To evaluate hard tissue volume stability during the healing stage of GBR with particulate bone graft and resorbable collagen membrane. MATERIALS AND METHODS: Twenty-eight patients who were missing a single maxillary incisor and required implant placement combined with GBR were randomly assigned to 2 groups: submerged (n = 14) and transmucosal (n = 14) healing groups...
December 28, 2017: Clinical Implant Dentistry and related Research
https://www.readbyqxmd.com/read/29279687/prosthodontic-maintenance-and-peri-implant-tissue-conditions-for-telescopic-attachment-retained-mandibular-implant-overdenture-systematic-review-and-meta-analysis-of-randomized-clinical-trials
#8
REVIEW
Ahmed Mohamed Keshk, Ahmed Yaseen Alqutaibi, Radhwan S Algabri, Mostafa S Swedan, Amal Kaddah
The mandibular implant-retained overdentures (MIRO) are a highly successful prosthetic treatment option. However, an argument still present regarding its design and type of attachment system. This systematic review and meta-analysis aimed to perform a qualitative and quantitative analysis of the scientific literature regarding the telescopic attachments versus other attachment systems retaining mandibular implant overdentures. Manual and electronic database (PubMed and Cochrane) searches were performed to identify randomized controlled trials (RCTs) comparing telescopic versus other attachment systems...
October 2017: European Journal of Dentistry
https://www.readbyqxmd.com/read/29275491/vancomycin-and-tobramycin-impregnated-mineralized-allograft-for-the-surgical-regenerative-treatment-of-peri-implantitis-a-1-year-follow-up-case-series
#9
José Nart, Beatriz de Tapia, Àngels Pujol, Andrés Pascual, Cristina Valles
OBJECTIVES: To assess the clinical and radiographic outcomes of the regenerative treatment of peri-implantitis using a vancomycin and tobramycin impregnated allograft (VTA) after a 12-month period. MATERIAL AND METHODS: Thirteen consecutive patients who required a regenerative treatment of peri-implantitis were recruited. For the 17 implant sites, a flap was raised, and after mechanical and chemical implant decontamination, a vancomycin and tobramycin impregnated allograft was placed in the defect and then covered with a collagen membrane...
December 24, 2017: Clinical Oral Investigations
https://www.readbyqxmd.com/read/29274159/effect-of-implant-placement-depth-on-the-peri-implant-bone-defect-configurations-in-ligature-induced-peri-implantitis-an-experimental-study-in-dogs
#10
B Huang, L Zhang, L Xu, W Zhu, L Witek, N Tovar, P-G Coelho, H Meng
BACKGROUND: The subcrestal placement of implant platform has been considered a key factor in the preservation of crestal bone, but the influence of implant placement depth on bone remodeling combined with peri-implantitis is not fully understood. The aim of this study was to assess the effect of the crestal or subcrestal placement of implants on peri-implant bone defects of ligature-induced peri-implantitis in dogs. MATERIAL AND METHODS: Eight weeks after tooth extraction in six beagle dogs, two different types of implants (A: OsseoSpeed(TM), Astra, Molndal, Sweden; B: Integra-CP(TM), Bicon, Boston, USA) were placed at either crestal or subcrestal (-1...
January 1, 2018: Medicina Oral, Patología Oral y Cirugía Bucal
https://www.readbyqxmd.com/read/29243686/bone-augmentation-and-simultaneous-soft-tissue-thickening-with-collagen-tissue-matrix-derivate-membrane-in-an-aesthetic-area-a-case-report
#11
Algirdas Puišys, Saulius Žukauskas, Ričardas Kubilius, Eglė Vindašiūtė, Tomas Linkevičius
Aesthetic implant restoration in the anterior maxilla is a challenge for clinicians. Alveolar ridge and surrounding gingiva deficiencies aggravates implant placement in the aesthetic area. This case report describes a technique for aesthetic single implant placement with simultaneous bone grafting and soft tissue thickening. At the time of implant surgery, allogenic (Maxgraft, Botiss Biomaterials, Germany) and xenogenic bone substitute (Cerabone, Botiss Biomaterials, Germany) was used for bone grafting, soft tissues were augmented simultaneously with collagen tissue matrix derivate membrane (Mucoderm, Botiss Biomaterials, Germany)...
2017: Stomatologija
https://www.readbyqxmd.com/read/29243683/the-comparison-of-cement-and-screw-retained-crowns-from-technical-and-biological-points-of-view
#12
Aira Ragauskaitė, Gediminas Žekonis, Juozas Žilinskas, Alvydas Gleiznys, Eglė Ivanauskienė, Darius Gleiznys
OBJECTIVE: The aim of this review was to evaluate the most common complications in implant prosthodontics with porcelain-fused-to-metal crowns, to evaluate the influence of biomechanical properties on fractures and cracks of veneered porcelain, and to compare the effects of crowns with different connections on soft tissues. MATERIAL AND METHODS: A search of literature in the English language between 2009 and 2015 was conducted using the following databases: Medline via PubMed, Science Direct, Wiley online library, Taylor& Francis, and Cochrane library...
2017: Stomatologija
https://www.readbyqxmd.com/read/29243410/clinical-and-radiographic-peri-implant-parameters-and-proinflammatory-cytokine-levels-among-cigarette-smokers-smokeless-tobacco-users-and-nontobacco-users
#13
Zohaib Akram, Fahim Vohra, Ishfaq A Bukhari, Saeed A Sheikh, Fawad Javed
BACKGROUND: It is postulated that clinical and radiographic peri-implant parameters are worse and levels of interleukin (IL)-1β and matrix metalloproteinase (MMP)-9 in the peri-implant sulcular fluid (PISF) are higher in cigarette-smokers (CS) and smokeless-tobacco users (STU) compared with nontobacco user (NTU). PURPOSE: The present study aimed to compare clinical and radiographic peri-implant inflammatory parameters and levels of IL-1β and MMP-9 levels among CS, STU, and NTU...
December 15, 2017: Clinical Implant Dentistry and related Research
https://www.readbyqxmd.com/read/29242129/comparison-between-peri-implant-bone-level-changes-of-implants-placed-during-and-3-months-after-iliac-bone-grafting
#14
Emre Tosun, Canseda Avağ, Özgür Başlarlı, Serkan Kiriş, Anıl Öztürk, Murat Akkocaoğlu
OBJECTIVE: The aim of this study was to compare the peri-implant bone level changes of implants placed during and 3 months after bone grafting from the iliac crest. STUDY DESIGN: A total of 103 implants were placed: 42 during the grafting and 61 at 3 months after the grafting procedure. All patients were grafted with iliac bone from the anterosuperior iliac crest. Bone resorption was evaluated with cone beam computed tomography in all patients at their last control visit...
November 15, 2017: Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology
https://www.readbyqxmd.com/read/29240206/peri-implantitis-management-in-the-esthetic-zone-in-a-periodontally-compromised-patient-five-year-results-including-cone-beam-computed-tomography
#15
Stella Kourkouta
A 59-year-old woman was referred for specialist treatment due to peri-implantitis affecting four implants in the anterior maxilla. On presentation, probing depths were up to 12 mm with bleeding on probing/suppuration and extensive peri-implant bone loss. There was a history of treated chronic periodontitis. Nonsurgical management was followed by regenerative peri-implant surgery. Peri-implant probing depths reduced to a maximum of 5 mm and remained stable throughout the 5-year follow-up period. Cone beam computed tomography at 2 years postoperatively confirmed the presence of regenerated peri-implant tissue and integration with the pre-existing peri-implant bone...
January 2018: International Journal of Periodontics & Restorative Dentistry
https://www.readbyqxmd.com/read/29239597/degradation-of-bioresorbable-mg-4zn-1sr-intramedullary-pins-and-associated-biological-responses-in-vitro-and-in-vivo
#16
Aaron F Cipriano, Jiajia Lin, Alan Lin, Amy Sallee, Belinda Le, Mayra Celene Cortez Alcaraz, Ren-Guo Guan, Gary Botimer, Serkan Inceoğlu, Huinan Liu
This article reports the degradation and biological properties of as-drawn Mg-4Zn-1Sr (designated as ZSr41) and pure Mg (P-Mg) wires as bioresorbable intramedullary pins for bone repair. Specifically, their cytocompatibility with bone marrow derived mesenchymal stem cells (BMSCs) and degradation in vitro, and their biological effects on peri-implant tissues and in vivo degradation in rat tibiae were studied. The as-drawn ZSr41 pins showed a significantly faster degradation than P-Mg in vitro and in vivo. The in vivo average daily degradation rates of both ZSr41 and P-Mg intramedullary pins were significantly greater than their respective in vitro degradation rates, likely because the intramedullary site of implantation is highly vascularized for removal of degradation products...
December 14, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29239086/treatment-of-pathologic-peri-implant-pockets
#17
REVIEW
Stefan Renvert, Ioannis Polyzois
Peri-implant and periodontal pockets share a number of anatomical features but also have distinct differences. These differences make peri-implant pockets more susceptible to trauma and infection than periodontal pockets. Inadequate maintenance can lead to infections (defined as peri-implant mucositis and peri-implantitis) within peri-implant pockets. These infections are recognized as inflammatory diseases, which ultimately lead to the loss of supporting bone. Diagnostic and treatment methods conventionally used in periodontics have been adopted to assess and treat these diseases...
February 2018: Periodontology 2000
https://www.readbyqxmd.com/read/29238198/oral-microbiome-and-peri-implant-diseases-where-are-we-now
#18
REVIEW
Rafał Pokrowiecki, Agnieszka Mielczarek, Tomasz Zaręba, Stefan Tyski
Peri-implant infective diseases (PIIDs) in oral implantology are commonly known as peri-implant mucositis (PIM) and periimplantitis (PI). While PIM is restricted to the peri-implant mucosa and is reversible, PI also affects implant-supporting bone and, therefore, is very difficult to eradicate. PIIDs in clinical outcome may resemble gingivitis and periodontitis, as they share similar risk factors. However, recent study in the field of proteomics and other molecular studies indicate that PIIDs exhibit significant differences when compared to periodontal diseases...
2017: Therapeutics and Clinical Risk Management
https://www.readbyqxmd.com/read/29236918/peri-implant-assessment-via-cone-beam-computed-tomography-and-digital-periapical-radiography-an-ex-vivo-study
#19
Nicolau Silveira-Neto, Mateus Ericson Flores, João Paulo De Carli, Max Dória Costa, Felipe de Souza Matos, Luiz Renato Paranhos, Maria Salete Sandini Linden
OBJECTIVES: This research evaluated detail registration in peri-implant bone using two different cone beam computer tomography systems and a digital periapical radiograph. METHODS: Three different image acquisition protocols were established for each cone beam computer tomography apparatus, and three clinical situations were simulated in an ex vivo fresh pig mandible: buccal bone defect, peri-implant bone defect, and bone contact. Data were subjected to two analyses: quantitative and qualitative...
November 2017: Clinics
https://www.readbyqxmd.com/read/29236900/influence-of-implantoplasty-on-stress-distribution-of-exposed-implants-at-different-bone-insertion-levels
#20
João Paulo Mendes Tribst, Amanda Maria de Oliveira Dal Piva, Jamil Awad Shibli, Alexandre Luiz Souto Borges, Rubens Nisie Tango
This study evaluated the effect of implantoplasty on different bone insertion levels of exposed implants. A model of the Bone Level Tapered implant (Straumann Institute, Waldenburg, Switzerland) was created through the Rhinoceros software (version 5.0 SR8, McNeel North America, Seattle, WA, USA). The abutment was fixed to the implant through a retention screw and a monolithic crown was modeled over a cementation line. Six models were created with increasing portions of the implant threads exposed: C1 (1 mm), C2 (2 mm), C3 (3 mm), C4 (4 mm), C5 (5 mm) and C6 (6 mm)...
December 7, 2017: Brazilian Oral Research
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