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Connective tissue graft

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https://www.readbyqxmd.com/read/28645243/extended-periarterial-sympathectomy-evaluation-of-long-term-outcomes
#1
Collier S Pace, Wyndell H Merritt
BACKGROUND: Periarterial sympathectomy is a proposed surgical treatment for patients with refractory Raynaud syndrome; however, there is debate regarding the indications and extent of dissection. Due to the segmental arterial sympathetic innervation, we favor an extended sympathectomy in concert with vein graft reconstruction of occluded vessels when necessary. The purpose of this study is to examine outcomes of extended periarterial sympathectomy in our patients. METHODS: A retrospective chart review was performed on 46 patients who underwent 58 periarterial sympathectomies (12 bilateral) since 1981...
June 1, 2017: Hand: Official Journal of the American Association for Hand Surgery
https://www.readbyqxmd.com/read/28634845/histomorphometric-and-immunohistochemical-evaluation-of-collagen-containing-xenogeneic-bone-blocks-used-for-lateral-bone-augmentation-in-staged-implant-placement
#2
Alberto Ortiz-Vigón, Sergio Martinez-Villa, Iñaki Suarez, Fabio Vignoletti, Mariano Sanz
BACKGROUND: The osteoconductive properties of collagen containing xenogeneic bone blocks (CCXBB) remain unclear. The aim of this prospective single-arm clinical study was to assess the histological outcomes of CCXBB blocks used as bone replacement grafts for lateral bone augmentation procedures. METHODS: In 15 patients with severe horizontal alveolar ridge resorption, lateral augmentation procedures were performed using CCXBB as bone replacement grafts. Twenty-six weeks postoperatively, a re-entry procedure was performed to evaluate the bone width for adequate implant placement and two histological specimens were retrieved from each patient, one being processed for ground sectioning and the other for decalcified paraffin-included sections...
December 2017: International Journal of Implant Dentistry
https://www.readbyqxmd.com/read/28631614/3d-printed-bioceramic-scaffolds-with-antibacterial-and-osteogenic-activity
#3
Yongliang Zhang, Dong Zhai, Mengchi Xu, Qingqiang Yao, Huiying Zhu, Jiang Chang, Chengtie Wu
Bacterial infection poses a significant risk with the wide application of bone graft materials. Designing bone grafts with good antibacterial performance and excellent bone-forming activity is of particular significance for bone tissue engineering. In our study, a 3D printing method was used to prepare β-tricalcium phosphate (β-TCP) bioceramic scaffolds. Silver (Ag) nanoparticles were uniformly dispersed on graphene oxide (GO) to form a homogeneous nanocomposite (named Ag@GO) with different Ag-to-graphene oxide mass ratios, with this being synthesized via the liquid chemical reduction approach...
June 20, 2017: Biofabrication
https://www.readbyqxmd.com/read/28609509/connective-tissue-graft-and-crown-resin-composite-restoration-for-the-treatment-of-gingival-recession-associated-with-noncarious-cervical-lesions-case-series
#4
Camila Augusto Silveira, Ingrid Fernandes Mathias, Felipe Lucas da Silva Neves, Nídia Cristina Castro Dos Santos, Cássia Fernandes Araújo, Maria Aparecida Neves Jardini, Eduardo Bresciani, Mauro Pedrine Santamaria
The purpose of this case series is to describe a restorative and surgical approach to treat the combined defect (CD)-gingival recession associated with noncarious cervical lesions (NCCL)-through connective tissue graft in combination with partial resin composite filling, restoring the crown zone plus 1 mm of the NCCL. A total of 10 patients were included. Bleeding on probing, probing depth, relative gingival recession, clinical attachment level, CD height, and dentin hypersensitivity were measured. The treatment provided statistically significant gain in clinical attachment level and shallow probing depths...
July 2017: International Journal of Periodontics & Restorative Dentistry
https://www.readbyqxmd.com/read/28609502/vascularization-and-innervation-of-connective-tissue-grafts-in-the-treatment-of-gingival-recessions-a-histologic-and-immunohistochemical-study
#5
Stefano Perotto, Federica Romano, Luca Cricenti, Stefano Gotti, Mario Aimetti
The goal of this study was to histologically evaluate the healing process of subepithelial connective tissue graft in humans. A sample of 16 patients with Miller Class I or II localized gingival recession defects were consecutively treated with a bilaminar technique. At baseline and after 2 months, tissue samples were taken from the donor and recipient sites. The revascularization and reinnervation of the graft were examined by means of hematoxylin-eosin and immunohistochemical techniques. After 2 months of healing, the integration of the grafted tissue was evident with the connective tissue expressing features belonging to both the recipient (cellular component) and the donor site (extracellular matrix) in the inner and superficial layers, respectively...
July 2017: International Journal of Periodontics & Restorative Dentistry
https://www.readbyqxmd.com/read/28609501/coronally-advanced-flap-technique-to-treat-class-i-and-ii-gingival-recession-in-combination-with-connective-tissue-graft-or-equine-collagen-matrix-a-retrospective-study
#6
Giacomo Tarquini
This retrospective study aimed to compare the effectiveness of an equine collagen matrix (ECM) with that of a subepithelial connective tissue graft (CTG) in patients affected by Class I and II gingival recessions treated with a coronally advanced flap (CAF) technique. Records of 50 consecutive patients were analyzed. Recession depth, probing depth, keratinized tissue width, and percentage of root coverage had been recorded at baseline and at the 1-year follow-up. The number of patients that achieved complete root coverage was also assessed...
July 2017: International Journal of Periodontics & Restorative Dentistry
https://www.readbyqxmd.com/read/28604223/soft-tissue-enhancement-combined-with-biologically-oriented-preparation-technique-bopt-to-correct-volumetric-bone-defects-a-clinical-case-report
#7
Davide Rancitelli, Pierpaolo Poli, Marco Cicciù, Francesco Lini, Rachele Roncucci, Gabriele Cervino, Carlo Maiorana
The aim of the present case report was to illustrate how to obtain an ideal alveolar ridge contour by means of peri-implant soft tissues management combined with the prosthetic approach of the biologically oriented preparation technique (BOPT). A patient presenting a moderate vertical and horizontal bone loss in the posterior maxilla was treated with sinus floor elevation and contextual implant placement. During the re-entry procedure, the horizontal defect was corrected with an apically repositioned flap combined with a connective tissue graft...
June 12, 2017: Journal of Oral Implantology
https://www.readbyqxmd.com/read/28587336/effects-of-polyvinylpyrrolidone-iodine-on-tendon-bone-healing-in-a-rabbit-extra-articular-model
#8
Peng Zhang, Yunlong Zhi, Hongwei Fang, Ziying Wu, Tianwu Chen, Jia Jiang, Shiyi Chen
Polyvinylpyrrolidone-iodine (PVP-I) is a broad-spectrum antimicrobial agent, but its effects on tendon-bone healing are unclear. The purpose of this study was to investigate the effects of PVP-I on bone marrow mesenchymal stem cells (BMSCs) in vitro and on tendon-bone healing in vivo. In this study, following investigation of the concentration-dependent effects of PVP-I on the viability and osteogenic differentiation of BMSCs, the appropriate concentration of PVP-I was selected for animal experiments. New Zealand white rabbits received autologous tendon transplantation with and without PVP-I treatment of the graft tendon...
June 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28574051/-stagewise-hybrid-method-of-treating-a-patient-with-connective-tissue-dysplasia-aortic-aneurysm-and-distal-dissection
#9
É R Charchian, A A Skvortsov, D A Chakal, Z R Khachatrian
Presented herein is a clinical case report concerning the use of a hybrid technique in stagewise surgical management of a patient with distal dissection and an aneurysm of the thoracoabdominal portion of the aorta. The patient at high risk with the connective tissue dysplasia syndrome had a past medical history of prosthetic repair of the descending thoracic aorta with type-1 haemodynamic correction. Three years later, the findings of computed tomography demonstrated fenestration in the area of the distal anastomosis, a patent false channel, and an increase in the diameter of the unoperated thoracoabdominal portion of the aorta...
2017: Angiologii︠a︡ i Sosudistai︠a︡ Khirurgii︠a︡, Angiology and Vascular Surgery
https://www.readbyqxmd.com/read/28571286/staged-hard-and-soft-tissue-reconstruction-followed-by-implant-supported-restoration-in-the-aesthetic-zone-a-case-report
#10
Harinath Parthasarathy, Lakshmi Ramachandran, Anupama Tadepalli, Deepa Ponnaiyan
Alveolar ridge deficiency is a common clinical consequence following tooth loss due to chronic periodontitis complicating ideal implant placement. Advanced hard and soft tissue augmentation procedures have been developed in the recent past with predictable clinical outcomes. A male patient presented with a Grade III mobile upper right central incisor associated with advanced bone loss and soft tissue deficit. Following extraction of tooth #11, socket augmentation was done using an autogenous cortico-cancellous block graft and subsequent soft tissue augmentation was done with palatal connective tissue graft...
April 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28567141/reproducibility-of-a-digital-method-to-evaluate-soft-tissue-modifications-a-study-of-inter-and-intra-operative-measurement-concordance
#11
Davide Rancitelli, Marco Cicciù, Francesco Lini, Davide Fumagalli, Anna Chiara Frigo, Carlo Maiorana
BACKGROUND: The soft tissue healing and quality around dental implant is a current debated topic in the recent literature. The free gingival margin and the quantity and quality of the mucosa around teeth and surrounding dental implants still determine the hard and soft tissue healing status. OBJECTIVE: The aim of this study is to assess inter and intra-operative measurement concordance of a method aimed at evaluating the apico-coronal migration of free gingival margin, using intra-oral photography...
2017: Open Dentistry Journal
https://www.readbyqxmd.com/read/28565774/effects-of-ankaferd-bloodstopper-on-bone-healing-in-an-ovariectomized-osteoporotic-rat-model
#12
Şeref Ezirganli, Hakki Oğuz Kazancioğlu, Ahmet Hüseyin Acar, Hakan Özdemir, Emre Kuzu, Deniz Şahin İnan
Bone defects resulting from oncological surgical resections, congenital facial anomalies, trauma or infection represent a significant and common clinical problem. The present study aimed to evaluate the effects of a commercially-available medicinal plant extract product, Ankaferd BloodStopper (ABS), on bone healing. The present study was performed on 24 female ovariectomized (OVX) rats. A defect on each rat calvarium was created using a trephine burr prior to the rats being divided into two groups. Defects were grafted with a gelatin sponge soaked with normal saline (control group) or plant extract (experimental group)...
May 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28555201/reconstruction-of-horizontovertical-alveolar-defects-presentation-of-a-novel-split-thickness-flap-design-%C3%A2-for-guided-bone-regeneration-%C3%A2-a-case-report-with-5-year-follow-up
#13
Peter Windisch, Anna Martin, Arvin Shahbazi, Balint Molnar
OBJECTIVE: To introduce a novel split-thickness flap design without periosteal and vertical releasing incisions for horizontovertical ridge augmentation. METHOD AND MATERIALS: Three patients with generalized chronic periodontitis presented posterior partial edentulism with class C alveolar defects according to the horizontal, vertical, and combination (HVC) classification. In all three cases, implant placement and simultaneous horizontovertical ridge augmentation utilizing a novel split-thickness flap design was performed...
2017: Quintessence International
https://www.readbyqxmd.com/read/28552225/mechanisms-and-use-of-neural-transplants-for-brain-repair
#14
Stephen B Dunnett, Anders Björklund
Under appropriate conditions, neural tissues transplanted into the adult mammalian brain can survive, integrate, and function so as to influence the behavior of the host, opening the prospect of repairing neuronal damage, and alleviating symptoms associated with neuronal injury or neurodegenerative disease. Alternative mechanisms of action have been postulated: nonspecific effects of surgery; neurotrophic and neuroprotective influences on disease progression and host plasticity; diffuse or locally regulated pharmacological delivery of deficient neurochemicals, neurotransmitters, or neurohormones; restitution of the neuronal and glial environment necessary for proper host neuronal support and processing; promoting local and long-distance host and graft axon growth; formation of reciprocal connections and reconstruction of local circuits within the host brain; and up to full integration and reconstruction of fully functional host neuronal networks...
2017: Progress in Brain Research
https://www.readbyqxmd.com/read/28548210/xenogeneic-collagen-matrix-versus-connective-tissue-graft-for-buccal-soft-tissue-augmentation-at-implant-site-a-randomized-controlled-clinical-trial
#15
Francesco Cairo, Luigi Barbato, Paolo Tonelli, Guido Batalocco, Gabriella Pagavino, Michele Nieri
BACKGROUND: Peri-implant soft tissue may be critical to prevent inflammation and promote gingival margin stability. The purpose of this randomized clinical trial (RCT) is to compare Xenogeneic Collagen Matrix (XCM) versus Connective Tissue Graft (CTG) to increase buccal soft tissue thickness at implant site. MATERIAL AND METHODS: Soft tissue augmentation with XCM (test) or CTG (control) was performed at 60 implants in 60 patients at the time of implant uncovering...
May 26, 2017: Journal of Clinical Periodontology
https://www.readbyqxmd.com/read/28546044/endovascular-repair-of-thoraco-abdominal-and-arch-aneurysms-in-patients-with-connective-tissue-disease-using-branched-and-fenestrated-devices
#16
Rachel E Clough, Teresa Martin-Gonzalez, Katrien Van Calster, Adrien Hertault, Rafaëlle Spear, Richard Azzaoui, Jonathan Sobocinski, Stéphan Haulon
INTRODUCTION: Prophylactic open surgery is the standard practice in patients with connective tissue and thoraco-abdominal (TAAA) and aortic arch disease. Branched and fenestrated devices offer a less invasive alternative but there are concerns regarding the durability of the repair and the effect of the stent graft on the fragile aortic wall. The aim of this study was to evaluate mid-term outcomes of fenestrated and/or branched endografting in patients with connective tissue disease. METHODS: All patients with connective tissue disease that underwent TAAA or arch aneurysm repair using a fenestrated and/or branched endograft in a single high volume centre between 2004 and 2015 were included...
May 22, 2017: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/28529011/the-effect-of-in-vivo-created-vascularized-neurotube-on-peripheric-nerve-regeneration
#17
Abdul Kerim Yapici, Yalcin Bayram, Hakan Akgun, Recep Gumus, Fatih Zor
INTRODUCTION: Creating vascularized nerve conduits for treatment of nerve gaps have been researched, however, these methods need microsurgical anastomosis thereby complicating the nerve repair process. Thus, the concept of vascularized nerve conduits has not popularized up till now. The aim of this study is to evaluate the effects of vascularized and non-vascularized biological conduits on peripheral nerve regeneration. MATERIAL AND METHODS: Following ethical board approval, 15 Sprague-Dawley rats were used in the study...
May 11, 2017: Injury
https://www.readbyqxmd.com/read/28512278/use-of-collagen-matrix-for-augmentation-of-the-peri-implant-soft-tissue-at-the-time-of-immediate-implant-placement
#18
Gregor-Georg Zafiropoulos, Gordon John
AIM: The aim of this study was to determine the treatment outcome of the use of a porcine monolayer collagen matrix (mCM) to augment peri-implant soft tissue in conjunction with immediate implant placement as an alternative to patient's own connective tissue. MATERIALS AND METHODS: A total of 27 implants were placed immediately in 27 patients (14 males and 13 females, with a mean age of 52.2 years) with simultaneous augmentation of the soft tissue by the use of a mCM...
May 1, 2017: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/28510331/isolation-of-ready-to-use-adipose-derived-stem-cell-asc-pellet-for-clinical-applications-and-a-comparative-overview-of-alternate-methods-for-asc-isolation
#19
Edoardo Raposio, Nicolò Bertozzi
Current literature does not offer a standardized method to isolate adipose-derived stem cells (ASCs) for clinical applications and hence clinical studies using ASCs often show inconsistent results. Most of these studies borrow laboratory or benchside-derived protocols, which are complex, time consuming, and involve the use of chemical, animal-derived reagents. In this unit we describe a relatively simple and faster isolation protocol that allows collection of a ready-to-use ASC pellet for clinical application...
May 16, 2017: Current Protocols in Stem Cell Biology
https://www.readbyqxmd.com/read/28494703/globule-leukocytes-and-other-mast-cells-in-the-mouse-intestine
#20
Peter Vogel, Laura Janke, David M Gravano, Meifen Lu, Deepali V Sawant, Dorothy Bush, Shuyu E, Dario A A Vignali, Asha Pillai, Jerold E Rehg
Only 2 major mast cell (MC) subtypes are commonly recognized in the mouse: the large connective tissue mast cells (CTMCs) and the mucosal mast cells (MMCs). Interepithelial mucosal inflammatory cells, most commonly identified as globule leukocytes (GLs), represent a third MC subtype in mice, which we term interepithelial mucosal mast cells (ieMMCs). This term clearly distinguishes ieMMCs from lamina proprial MMCs (lpMMCs) while clearly communicating their common MC lineage. Both lpMMCs and ieMMCs are rare in normal mouse intestinal mucosa, but increased numbers of ieMMCs are seen as part of type 2 immune responses to intestinal helminth infections and in food allergies...
January 1, 2017: Veterinary Pathology
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