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https://www.readbyqxmd.com/read/29351052/particulate-coral-hydroxyapatite-sheltered-by-titanium-mesh-for-localized-alveolar-rehabilitation-after-onlay-graft-failure-a-case-report
#1
Miao Zhou, Shuyi Li, Hendrik Terheyden, Shuaishuai Cao, Yuejuan Che, Yuanming Geng
Reconstruction of bone loss in the alveolar ridge has long been challenging. Autologous bone grafts are considered as the "golden standard", while little research has focused on how to repair pronounced alveolar bone defects after autologous bone graft failure. The aim of this study was to detail a method based on the titanium mesh technique coupled with particulate coral hydroxyapatite to solve the Onlay graft failure. With bone deficiency in the #11 and #24- #25 regions, we harvested two autologous bone blocks for reconstruction...
January 19, 2018: Journal of Oral Implantology
https://www.readbyqxmd.com/read/29351044/comparison-of-reliability-of-categorical-and-continuous-scales-for-radiographic-assessments-of-bone-infill-following-secondary-alveolar-bone-grafting
#2
Peter V Fowler, Azza H Al-Ani, John M D Thompson
OBJECTIVES: To investigate examiner reliability of scoring intraoral radiographs of bone infill following secondary bone grafting using a categorical scale (modified Kindelan Index) and a 10-cm visual analog scale (VAS). To investigate the level of clinical experience on the reliability of these assessments. DESIGN: Retrospective study involving 10 clinicians of varying clinical experience who were blind to the patient's identity. SETTING: All grafting was carried out within the New Zealand public hospital service...
February 2018: Cleft Palate-craniofacial Journal
https://www.readbyqxmd.com/read/29351042/secondary-alveolar-bone-grafting-in-patients-born-with-unilateral-cleft-lip-and-palate-a-20-year-follow-up
#3
Fatemeh Jabbari, Laila Wiklander, Erika Reiser, Andreas Thor, Malin Hakelius, Daniel Nowinski
OBJECTIVE: To identify factors of oral health important for the final outcome, after secondary alveolar bone grafting in patients born with unilateral cleft lip and palate and compare occlusal radiographs with cone beam computed tomography (CBCT) in assessment of alveolar bone height. DESIGN: Observational follow-up study. SETTING: Cleft Lip and Palate Team, Craniofacial Center, Uppsala University Hospital, Sweden. PATIENTS: 40 nonsyndromic, Caucasian patients with unilateral complete cleft lip and palate...
February 2018: Cleft Palate-craniofacial Journal
https://www.readbyqxmd.com/read/29351041/a-new-technique-in-alveolar-cleft-bone-grafting-for-dental-implant-placement-in-patients-with-cleft-lip-and-palate
#4
Vo Van Nhan, Le Van Son, Ta Anh Tuan, Nguyen Tai Son, Trinh Dinh Hai, Le Duc Lanh, Nguyen Manh Ha, Lam Dai Phong
OBJECTIVE: To evaluate 2 iliac corticocancellous-block grafting techniques for dental implant placement in residual alveolar clefts. DESIGN: Nonrandomized prospective clinical trial between March 2010 and December 2014. SETTING: National Hospital of Odonto-Stomatology, Hanoi, Vietnam. PARTICIPANTS: Thirty-two patients (23 female, 9 male; mean age, 21.28 years; range, 16-31 years) with unilateral complete alveolar cleft after reconstructive surgery for cleft lip and palate (CLP)...
February 2018: Cleft Palate-craniofacial Journal
https://www.readbyqxmd.com/read/29346020/sequential-ridge-augmentation-sra-protocol-for-hard-and-soft-tissue-grafting-in-alveolar-ridge-deficiencies-a-proposed-algorithm
#5
Neel Bhatavadekar, Amit Srikant Gharpure
The success of implant-based treatment is dependent on the correct restorative position of dental implants in the oral cavity. Often, the final prostheses require dental implants to be placed at sites with inadequate native hard and soft tissue. Bone augmentation procedures and materials have been extensively studied in the literature and various techniques have been developed over time to obtain adequate hard tissue at proposed implant sites. In the recent past, few publications have also studied soft tissue development at planned implant sites...
January 18, 2018: Journal of Oral Implantology
https://www.readbyqxmd.com/read/29341890/periodontal-diseases-and-adverse-pregnancy-outcomes-is-there-a-role-for-vitamin-d
#6
REVIEW
Anne Marie Uwitonze, Peace Uwambaye, Moses Isyagi, Chrispinus H Mumena, Alice Hudder, Afrozul Haq, Kamrun Nessa, Mohammed S Razzaque
Studies have shown a relationship between maternal periodontal diseases (PDs) and premature delivery. PDs are commonly encountered oral diseases which cause progressive damage to the periodontal ligament and alveolar bones, leading to loss of teeth and oral disabilities. PDs also adversely affect general health by worsening cardiovascular and metabolic diseases. Moreover, maternal PDs are thought to be related to increasing the frequency of preterm-birth with low birth weight (PBLBW) new-borns. Prematurity and immaturity are the leading causes of prenatal and infant mortality and is a major public health problem around the world...
January 13, 2018: Journal of Steroid Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/29340352/bone-healing-at-functionally-loaded-and-unloaded-screw-shaped-implants-supporting-single-crowns-a-histomorphometric-study-in-humans
#7
Daichi Yonezawa, Adriano Piattelli, Riccardo Favero, Mauro Ferri, Giovanna Iezzi, Daniele Botticelli
PURPOSE: To evaluate histologically and histomorphometrically the effect of a delayed load on healing at implants with a moderately rough surface. MATERIALS AND METHODS: Two solid titanium screw-shaped devices, 5 mm long and 3.5 mm in diameter, were inserted in the distal segments of the alveolar ridge of 16 volunteer patients in a nonsubmerged fashion. After 2 months, one implant was loaded, while the other was left unloaded. After 2 months, the two implants were collected from 10 patients using a sonic instrument, and ground sections were prepared from the biopsy specimens...
January 2018: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/29337632/the-usefulness-of-cone-beam-computed-tomography-gray-values-for-alveolar-bone-linear-measurements
#8
Soumya Padala, Boon Ching Tee, Frank M Beck, Kathy Elias, Do-Gyoon Kim, Zongyang Sun
OBJECTIVES: To test a proof-of-concept that the accuracy and reliability of alveolar bone height measurements from orthodontic grade (large field-of-view [FOV], large voxel-size) cone-beam computed tomography (CBCT) images may be improved by using pixel gray values. MATERIALS AND METHODS: Twenty fresh cadaver pig heads underwent CBCT scans (17 × 23 cm FOV, 0.4-mm voxel size). Buccal alveolar bone heights of maxillary first molars were measured using the conventional vision-based (VB) and the proposed gray value-assisted (GVA) methods...
January 16, 2018: Angle Orthodontist
https://www.readbyqxmd.com/read/29335154/local-administration-of-tiludronic-acid-downregulates-important-mediators-involved-in-periodontal-tissue-destruction-in-experimental-periodontitis-in-rats
#9
Flávia A C Furlaneto, Nara L T Nunes, Ricardo B Souza, Kely O Yamamoto, Ivan Lima Oliveira Filho, Nicolly P R Frota, Hellíada Chaves, Mario Lisboa, Mario Taba, Edilson Ervolino, Michel R Messora
OBJECTIVE: The purpose of this study was to evaluate whether local administration of TIL could influence the expression of the inflammatory mediators IL-1β, TNF-α, MMP-8 and COX-2 in rats with experimental periodontitis (EP). METHODS: Twenty-four adult male rats (Rattus norvegicus, albinus, Wistar) were assigned to groups C, EP, EP-TIL (CControl group, EP-Periodontitis groups). On EP groups, a ligature was placed around maxillary 2nd molars on day 1. On group EP-TIL, 20 μL of TIL solution (1 mg/kg body weight) was injected into the subperiosteal palatal area adjacent to the maxillary 2nd molar every other day until euthanasia (day 11)...
January 9, 2018: Archives of Oral Biology
https://www.readbyqxmd.com/read/29333773/-influence-of-positional-relationship-between-the-long-axis-of-the-mandibular-anterior-teeth-and-the-alveolar-bone-on-the-treatment-design-of-dental-implants
#10
Yu Tiantian, Pu Bishuang, Liu Jin, Xia Yulan, Wang Gang, Lan Jing
OBJECTIVE: This study aimed at investigating and measuring the positional relationship between the long axis of the mandibular anterior teeth and the alveolar bone using cone beam computed tomography (CBCT) to provide reference data for implant treatment. METHODS: From the CBCT image database, 150 cases of radiographic data were selected according to the inclusion criteria and then were divided into six groups: males' mandibular central incisors, males' mandibular lateral incisors, males' mandibular canines, females' mandibular central incisors, females' mandibular lateral incisors, and females' mandibular canines...
December 1, 2017: Hua Xi Kou Qiang Yi Xue za Zhi, Huaxi Kouqiang Yixue Zazhi, West China Journal of Stomatology
https://www.readbyqxmd.com/read/29333593/control-of-anterior-segment-using-an-antero-posterior-lingual-sliding-retraction-system-a-preliminary-cone-beam-ct-study
#11
Min Hwang, Hyo-Won Ahn, Soon-Yong Kwon, Jeong-Ho Choi, Seong-Hun Kim, Gerald Nelson
BACKGROUND: This study was performed to evaluate the treatment effects of the antero-posterior lingual retractor (APLR), focusing on the 3-dimensional (3D) tooth movement of the maxillary anterior teeth and their alveolar bone levels. METHODS: En masse retraction was performed using either the C-lingual retractor (CLR, C-group, n = 9) or the antero-posterior lingual retractor (APLR, AP-group, n = 8). We evaluated 3D movement of the maxillary anterior teeth and alveolar bone levels, root length of the central incisors, long axes of the maxillary canines, and occlusal plane changes from CBCT images...
January 15, 2018: Progress in Orthodontics
https://www.readbyqxmd.com/read/29333324/ridge-preservation-using-basic-fibroblast-growth-factor-2-and-collagenated-biphasic-calcium-phosphate-in-beagle-dogs
#12
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
#13
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/29333088/bone-regeneration-using-silk-hydroxyapatite-hybrid-composite-in-a-rat-alveolar-defect-model
#14
Kyung S Koh, Jong Woo Choi, Eun Jeong Park, Tae Suk Oh
Background: To overcome the limited source of autogenous bone in bone grafting, many efforts have been made to find bone substitutes. The use of hybrid composites of silk and hydroxyapatite to simulate natural bone tissue can overcome the softness and brittleness of the individual components. Methods: Critical-sized, 7 x 4 x 1.5 mm alveolar defects were created surgically in 36 Sprague-Dawley rats. Three treatment groups were tested: an empty defect group (group I), a silk fibrin scaffold group (group II), and a hydroxyapatite-conjugated silk fibrin scaffold group (group III)...
2018: International Journal of Medical Sciences
https://www.readbyqxmd.com/read/29327431/enhanced-bone-regeneration-and-visual-monitoring-via-super-paramagnetic-iron-oxide-nanoparticle-scaffold-in-rats
#15
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/29327303/differential-osteopontin-expression-in-human-osteoblasts-derived-from-iliac-crest-and-alveolar-bone-and-its-role-in-early-stages-of-angiogenesis
#16
Martin Wein, Diana Huelter-Hassler, Katja Nelson, Tobias Fretwurst, Susanne Nahles, Guenter Finkenzeller, Brigitte Altmann, Thorsten Steinberg
In our previous study, we revealed significant differences of osteopontin (OPN) gene expression in primary human osteoblasts (HOBs) derived from iliac crest bone (iHOBs) and alveolar bone (aHOBs). The present study aims at assigning this discriminative expression to a possible biologic function. OPN is known to be involved in several pathologic and physiologic processes, among others angiogenesis. Therefore, we studied the reaction of human umbilical vein endothelial cells (HUVECs) to HOB-derived OPN regarding angiogenesis...
January 11, 2018: Journal of Bone and Mineral Metabolism
https://www.readbyqxmd.com/read/29321271/incremental-distribution-of-strontium-and-zinc-in-great-ape-and-fossil-hominin-cementum-using-synchrotron-x-ray-fluorescence-mapping
#17
Christopher Dean, Adeline Le Cabec, Kathryn Spiers, Yi Zhang, Jan Garrevoet
Cementum and the incremental markings it contains have been widely studied as a means of ageing animals and retrieving information about diet and nutrition. The distribution of trace elements in great ape and fossil hominin cementum has not been studied previously. Synchrotron X-ray fluorescence (SXRF) enables rapid scanning of large tissue areas with high resolution of elemental distributions. First, we used SXRF to map calcium, phosphorus, strontium and zinc distributions in great ape dentine and cementum...
January 2018: Journal of the Royal Society, Interface
https://www.readbyqxmd.com/read/29319546/influence-of-the-presence-of-alveolar-mucosa-at-implants-a-histological-study-in-humans
#18
Yasushi Nakajima, Adriano Piattelli, Giovanna Iezzi, Natalia Fortich Mesa, Mauro Ferri, Daniele Botticelli
OBJECTIVE: To evaluate the influence of the presence or absence of keratinized mucosa on hard and soft tissues around implants. MATERIAL AND METHODS: Sixteen volunteers with edentulous regions in the distal aspect of the mandible participated in the study. In each patient, 2 solid titanium screw-shaped devices, 3.5 mm in diameter and 5 mm long, were installed. The incision of the mucosa was performed in such a way to allow that, after the suture of the flaps, only the alveolar mucosa surround the test sites and the keratinized mucosa surround the control implants...
January 9, 2018: Implant Dentistry
https://www.readbyqxmd.com/read/29318761/suitability-of-the-cellienttm-cell-block-method-for-diagnosing-soft-tissue-and-bone-tumors
#19
W Song, B M van Hemel, A J H Suurmeijer
BACKGROUND: The diagnosis of tumors of soft tissue and bone (STB) heavily relies on histological biopsies, whereas cytology is not widely used. CellientTM cell blocks often contain small tissue fragments. In addition to Hematoxylin and Eosin (H&E) interpretation of histological features, immunohistochemistry (IHC) can be applied after optimization of protocols. The objective of this retrospective study was to see whether this cytological technique allowed us to make a precise diagnosis of STB tumors...
January 10, 2018: Diagnostic Cytopathology
https://www.readbyqxmd.com/read/29318411/cyclophilin-a-increases-cd68-cell-infiltration-in-rat-experimental-periodontitis
#20
Lande Xue, Linwang Su, Li Zhao, Jianxia Li, Yi Du, Xijiao Yu
Cyclophilin A (CyPA) is a potent chemokine, which can directly induce leukocyte chemotaxis and contribute to the pathogenesis of inflammation-mediated diseases. This study is to observe the expression and distribution of CyPA and CD68+ cells in the histopathogenesis of rat ligation-induced experimental periodontitis, and assess the role of CyPA in CD68+ cell infiltration in rat experimental periodontitis. Experimental periodontitis was induced by ligation according to our previous method. CyPA expression in gingival tissues was detected by western blotting...
January 9, 2018: Journal of Molecular Histology
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