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Ridge preservation

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https://www.readbyqxmd.com/read/29351678/endoscopic-transcranial-duraplasty-for-rhinoliquorrhea-a-cadaveric-study
#1
Andrea Bartoli, Jean H Fasel, Karl Schaller, Max Jägersberg
BACKGROUND: Repair of the anterior skull base for cerebrospinal fluid leak requires either endoscopic endonasal approach or open transcranial approach. OBJECTIVE: To present a less invasive surgical procedure for sealing of the entire anterior fossa floor for traumatic rhinoliquorrhea. METHODS: Cadaver study in 3 head specimens. Endoscopic placement of a furled bovine pericardial patch bilaterally along the sphenoid ridge and planum in guidewire technique...
February 1, 2018: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/29340355/human-histologic-evidence-of-new-bone-formation-and-osseointegration-between-root-dentin-unplanned-socket-shield-and-dental-implant-case-report
#2
Charles Schwimer, Gregory A Pette, Howard Gluckman, Maurice Salama, Jonathan Du Toit
The socket-shield technique described 7 years ago has since grown in its reporting in the literature as a valid method of ridge preservation at immediate implant placement. To date, large clinical cohorts with up-to-4-year follow-up have been reported. Additionally, evidence of tissue histology at the dental implant and socket-shield has been demonstrated in the animal model. However, human histologic evidence has not yet been available, and the clinician's uncertainty regarding the tissues that may form between the socket-shield and dental implant may remain unanswered until now...
January 2018: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/29333324/ridge-preservation-using-basic-fibroblast-growth-factor-2-and-collagenated-biphasic-calcium-phosphate-in-beagle-dogs
#3
Byungjin Sohn, Minkyoon Hwang, Sungtae Kim, Hyeong-Il Kim, Young Ku
Purpose: The aim of this study was to evaluate volumetric and histologic changes in edentulous alveolar ridge areas after ridge preservation using basic fibroblast growth factor-2 (bFGF-2) in combination with collagenated biphasic calcium phosphate (BCP). Methods: The experiments were performed in 6 adult male beagle dogs. The following 3 groups were created: 1) ridge preservation with bFGF-2 and collagenated BCP (experimental group), 2) ridge preservation with collagenated BCP (positive control group), and 3) a negative control group in which no ridge preservation procedure was performed...
December 2017: Journal of Periodontal & Implant Science
https://www.readbyqxmd.com/read/29333323/alveolar-ridge-preservation-with-an-open-healing-approach-using-single-layer-or-double-layer-coverage-with-collagen-membranes
#4
Ho-Keun Choi, Hag-Yeon Cho, Sung-Jo Lee, In-Woo Cho, Hyun-Seung Shin, Ki-Tae Koo, Hyun-Chang Lim, Jung-Chul Park
Purpose: The aim of this prospective pilot study was to compare alveolar ridge preservation (ARP) procedures with open-healing approach using a single-layer and a double-layer coverage with collagen membranes using radiographic and clinical analyses. Methods: Eleven molars from 9 healthy patients requiring extraction of the maxillary or mandibular posterior teeth were included and allocated into 2 groups. After tooth extraction, deproteinized bovine bone mineral mixed with 10% collagen was grafted into the socket and covered either with a double-layer of resorbable non-cross-linked collagen membranes (DL group, n=6) or with a single-layer (SL group, n=5)...
December 2017: Journal of Periodontal & Implant Science
https://www.readbyqxmd.com/read/29327431/enhanced-bone-regeneration-and-visual-monitoring-via-super-paramagnetic-iron-oxide-nanoparticle-scaffold-in-rats
#5
Shuying Hu, Yi Zhou, Yantao Zhao, Yang Xu, Feimin Zhang, Ning Gu, Junqing Ma, Mark A Reynolds, Yang Xia, Hockin H K Xu
A main challenge for use of scaffolds in bone engineering involves non-invasive monitoring in vivo and enhanced bone regeneration. The tissue-repair effect of super-paramagnetic iron oxide nanoparticles (SPIONs) was demonstrated previously by our group. However, testing in vivo is needed to confirm in vitro results. Here, SPIONs loaded gelatin sponge (GS) was used as a scaffold (SPIONs-GS) and implanted in the incisor sockets of Sprague-Dawley rats. Incisor sockets filled with nothing and filled with GS served as controls...
January 12, 2018: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/29313201/water-and-nitrate-dynamics-in-safflower-field-lysimeters-under-different-irrigation-strategies-planting-methods-and-nitrogen-fertilization-and-application-of-hydrus-1d-model
#6
Mohammad Hossein Shahrokhnia, Ali Reza Sepaskhah
World recent concerns about the shortage of water resources and contamination of groundwater supplies have motivated scientists seeking for more efficient techniques in irrigation and fertilization of farms while taking the advantage of models. The objective of this study is to address how water and nitrogen (N) dynamics are affected by efficient management strategies and to evaluate the application of HYDRUS-1D model in these conditions. In terms of using management policies, different irrigation strategies, planting methods, and different N fertilization rates applied on safflower (Carthamus tinctorius L...
January 8, 2018: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29303859/three-dimensional-radiological-assessment-of-alveolar-bone-volume-preservation-using-bovine-bone-xenograft
#7
Ali Al Qabbani, Sausan Al Kawas, Noor Hayati A Razak, Saad Wahby Al Bayatti, Hamid Hammad Enezei, A Rani Samsudin, Suzina Sheikh Ab Hamid
INTRODUCTION: Alveolar bone is critical in supporting natural teeth, dental implants as well as a removable and fixed prosthesis. Alveolar bone volume diminishes when its associated natural tooth is lost. OBJECTIVE: The aim of this study is to evaluate the effectiveness of bovine bone granules on alveolar bone socket augmentation for ridge preservation following atraumatic tooth extraction. MATERIALS AND METHODS: Twenty medically fit patients (12 males and 8 females aged between 18 and 40 years) who needed noncomplicated tooth extraction of 1 mandibular premolar tooth were divided randomly and equally into 2 groups...
January 4, 2018: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/29282871/minimally-invasive-esthetic-ridge-preservation-with-growth-factor-enhanced-bone-matrix
#8
Marc L Nevins, Sherif Said
OBJECTIVES: Extraction socket preservation procedures are critical to successful esthetic implant therapy. Conventional surgical approaches are technique sensitive and often result in alteration of the soft tissue architecture, which then requires additional corrective surgical procedures. This case series report presents the ability of flapless surgical techniques combined with a growth factor-enhanced bone matrix to provide esthetic ridge preservation at the time of extraction for compromised sockets...
December 28, 2017: Journal of Esthetic and Restorative Dentistry
https://www.readbyqxmd.com/read/29280075/effect-of-flapless-ridge-preservation-with-two-different-alloplastic-materials-in-sockets-with-buccal-dehiscence-defects-volumetric-and-linear-changes
#9
Nadja Naenni, Vitor Sapata, Stefan P Bienz, Minas Leventis, Ronald E Jung, Christoph H F Hämmerle, Daniel S Thoma
OBJECTIVE: To test whether or not one out of two alloplastic materials used for ridge preservation (RP) is superior to the other in terms of volumetric and linear ridge changes over time. MATERIALS AND METHODS: In 16 adult beagle dogs, the distal roots of P3 and P4 were extracted and 50% of the buccal bone plate removed. Ridge preservation was performed randomly using two different alloplastic bone grafting substitutes (poly lactic-co-glycolic acid (PLGA) coated biphasic calcium phosphate particles consisting of 60% hydroxyapatite (HA) and 40% beta-tricalcium phosphate (ß-TCP=test 1), (a biphasic calcium phosphate consisting 60% HA and 40% ß-TCP=test 2) and a resorbable collagen membrane or a control group (sham)...
December 26, 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/29240211/retrospective-analysis-of-the-outcome-of-ridge-preservation-with-anorganic-bovine-bone-minerals-microcomputed-tomographic-assessment-of-wound-healing-in-grafted-extraction-sockets
#11
Neema Bakhshalian, Marcelo Freire, Seiko Min, Ivy Wu, Homayoun H Zadeh
A total of 68 extraction sockets were grafted with anorganic bovine bone mineral and covered by dense polytetrafluoroethylene membrane. Quantitative analysis of three-dimensional microcomputed tomography imaging of core samples retrieved after a mean of 21.0 ± 14.2 weeks revealed 40.1% bone volume fraction (bone volume [BV]/total volume [TV]) and 12% residual graft. Evidence of de novo bone formation was observed in the form of discrete islands of newly formed bone in direct apposition to graft particles, separated from parent bone...
January 2018: International Journal of Periodontics & Restorative Dentistry
https://www.readbyqxmd.com/read/29240203/scar-tissue-formation-following-alveolar-ridge-preservation-a-case-control-study
#12
Stefan Fickl, Frederic Kauffmann, Christian F Stappert, Anke Kauffmann, Ulrich Schlagenhauf
The aim of this retrospective case control study was to compare a porcine collagen matrix (Mucograft Seal, Geistlich) with a free gingival punch graft with respect to size, invagination, and color of resulting soft tissue scar formation. Following definition of inclusion and exclusion criteria, 22 patients were retrospectively included in this study. The patients were divided into two groups. In group A, the extraction socket was filled with bovine bone mineral (Bio-Oss, Geistlich) and covered with a free gingival punch graft...
January 2018: International Journal of Periodontics & Restorative Dentistry
https://www.readbyqxmd.com/read/29240202/effectiveness-of-two-different-lingual-flap-advancing-techniques-for-vertical-bone-augmentation-in-the-posterior-mandible-a-comparative-split-mouth-cadaver-study
#13
Istvan Urban, Hannes Traxler, Miguel Romero-Bustillos, Sandor Farkasdi, Barry Bartee, Gabor Baksa, Gustavo Avila-Ortiz
Vertical ridge augmentation in the posterior mandible is a technique-sensitive procedure that requires adequate anatomical knowledge and precise surgical skills to minimize the risk of complications. One of the most important but also challenging aspects of the surgical technique is proper flap management to allow for passive flap closure and reduce the chances of postoperative complications affecting deep anatomical spaces. This article presents a detailed description of a novel lingual flap advancement technique and its validation via a split-mouth, comparative study using a cadaver model...
January 2018: International Journal of Periodontics & Restorative Dentistry
https://www.readbyqxmd.com/read/29140383/a-randomized-split-mouth-clinical-trial-on-effectiveness-of-amnion-chorion-membranes-in-alveolar-ridge-preservation-a-clinical-radiologic-and-morphometric-study
#14
Muyeenul Hassan, Sivaraman Prakasam, Carol Bain, Ahmed Ghoneima, Sean Shih-Yao Liu
PURPOSE: Recent case reports suggest that amnion-chorion membranes (ACM) and dense polytetrafluoroethylene membranes (dPTFE) can be left exposed during ridge preservation. The aim of this study was to compare the effectiveness of these membranes in ridge preservation, particularly when they are intentionally left exposed. MATERIALS AND METHODS: A split-mouth, single-blind, randomized trial design was used to compare treatments with the two membranes in 22 nonmolar sites on the same arch...
November 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/29120890/validity-of-collagen-plugs-for-ridge-preservation-in-a-canine-model
#15
Dong-Min Kim, Hyun-Chang Lim, Ji-Youn Hong, Seung-Il Shin, Jong-Hyuk Chung, Yeek Herr, Seung-Yun Shin
PURPOSE: The purpose of the present study was to evaluate healing outcomes after collagen plug insertion in extraction-related defects. MATERIALS AND METHODS: The third and fourth mandibular premolars in canines were extracted, and the septal bone was removed. The following treatments were performed for the defects: porcine atelo-collagen plug, bovine atelo-collagen plug, and no intervention (control). The experimental animals were killed after 6, 12, or 24 weeks (n = 4, respectively)...
November 7, 2017: Implant Dentistry
https://www.readbyqxmd.com/read/29095788/is-bone-graft-or-guided-bone-regeneration-needed-when-placing-immediate-dental-implants-a-systematic-review
#16
Hania AlKudmani, Reham Al Jasser, Sebastiano Andreana
AIMS: To systematically review the effect and type of bone graft and guided bone regeneration around immediate implants on hard and soft tissue changes. METHODS: Three electronic databases were searched up to June 2015. Outcomes consisted of hard and soft tissue dimensional changes. RESULTS: Eight studies were included according to inclusion criteria. Immediate implants with bone grafting had superior soft tissue stability and preserved horizontal ridge dimension and buccal plate thickness, when compared to no grafting...
December 2017: Implant Dentistry
https://www.readbyqxmd.com/read/29058731/self-spreading-of-the-wetting-ridge-during-stick-slip-on-a-viscoelastic-surface
#17
S J Park, J B Bostwick, V De Andrade, J H Je
Dynamic wetting behaviors on soft solids are important to interpret complex biological processes from cell-substrate interactions. Despite intensive research studies over the past half-century, the underlying mechanisms of spreading behaviors are not clearly understood. The most interesting feature of wetting on soft matter is the formation of a "wetting ridge", a surface deformation by a competition between elasticity and capillarity. Dynamics of the wetting ridge formed at the three-phase contact line underlies the dynamic wetting behaviors, but remains largely unexplored mostly due to limitations in indirect observation...
November 15, 2017: Soft Matter
https://www.readbyqxmd.com/read/29042746/erratum-comparative-alveolar-ridge-preservation-using-allogenous-tooth-graft-versus-free-dried-bone-allograft-a-randomized-controlled-prospective-clinical-pilot-study
#18
(no author information available yet)
[This corrects the article on p. 211 in vol. 8, PMID: 28839405.].
July 2017: Contemporary Clinical Dentistry
https://www.readbyqxmd.com/read/29023617/socket-shield-technique-for-implant-placement-in-the-esthetic-zone-a-case-report
#19
Matthias Petsch, Benedikt Spies, Ralf-Joachim Kohal
Improvements in implant design, placement protocols, and sequences for reconstruction in the anterior region have enabled clinicians to provide their patients with esthetically acceptable results. Yet from a clinical standpoint, the predictable preservation of the peri-implant soft tissue remains challenging and tissue grafting is often necessary to compensate for ridge contour changes in postextraction sites. In animal and clinical studies, the socket shield technique has shown its potential to prevent resorption of buccal tissues...
November 2017: International Journal of Periodontics & Restorative Dentistry
https://www.readbyqxmd.com/read/29023609/thickness-of-the-buccal-plate-in-posterior-teeth-a-prospective-cone-beam-computed-tomography-study
#20
Kayleigh Eaves Temple, John Schoolfield, Marcel E Noujeim, Guy Huynh-Ba, David J Lasho, Brian L Mealey
Buccal plate thickness is an important clinical parameter for postextraction implant treatment planning. The purpose of this study was to assess buccal plate thickness of the posterior maxilla and mandible using cone beam computed tomography (CBCT). A total of 265 patients and 934 teeth met the inclusion criteria for this study. CBCT volumes were taken and aligned for measurement at the ideal midsagittal cross-section. Buccal plate thickness was measured at 1, 3, and 5 mm apical to the alveolar crest. The frequency of thick (≥ 1 mm), thin (< 1 mm), and radiographic absence of the buccal plate were determined...
November 2017: International Journal of Periodontics & Restorative Dentistry
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