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Alveolar resorption

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https://www.readbyqxmd.com/read/28528368/preparation-of-allogeneic-bone-for-alveolar-ridge-augmentation
#1
Kornel Krasny, Artur Kamiński, Marta Krasny, Tomasz Czech, Andrzej Wojtowicz
Implant treatment is safe and predictable with sufficient amount and quality of bone tissue. In case of severely reduced bone tissue after a tooth was lost, augmentation of such tissue is necessary before implant embedment. Retrospective evaluation covered 380 alveolar ridge reconstructions. The study material consisted of human grafts prepared by the Department of Transplantology and Central Tissue Bank, Medical University of Warsaw. Presentation of laboratory procedures in the context of physical parameters of frozen, radiation sterilised, allogeneic corticocancellous material was presented...
May 20, 2017: Cell and Tissue Banking
https://www.readbyqxmd.com/read/28528307/extracellular-atp-is-a-key-modulator-of-alveolar-bone-loss-in-periodontitis
#2
REVIEW
Itzhak Binderman, Nasir Gadban, Avinoam Yaffe
Periodontal diseases are initiated by pathogenic bacterial biofilm activity that induces a host inflammatory cells immune response, degradation of dento gingival fibrous tissue and its detachment from root cementum. It is well accepted, that osteoclastic alveolar bone loss is governed exclusively through secretion of proinflammatory cytokines. Nevertheless, our findings suggest that once degradation of collagen fibers by MMPs occurs, a drop of cellular strains cause immediate release of ATP from marginal gingival fibroblasts, cell deformation and influx of Ca+2...
May 13, 2017: Archives of Oral Biology
https://www.readbyqxmd.com/read/28523641/sandwich-bone-graft-for-vertical-augmentation-of-the-posterior-maxillary-region-a-case-report-with-9-year-follow-up
#3
Kenko Tanaka, Irena Sailer, Yoshihiro Kataoka, Shinnosuke Nogami, Tetsu Takahashi
The loss of teeth followed by bone resorption often lead to defects in the alveolar ridge, making installation of dental implants difficult. Correction of such bone defects, especially lack of height of the ridge, is a difficult problem for all dental surgeons. This report describes the outcome of treatment after alveolar ridge augmentation in the atrophic posterior maxillary region via segmental sandwich osteotomy combined with placement of an interpositional autograft prior to placement of endosseous implants...
December 2017: International Journal of Implant Dentistry
https://www.readbyqxmd.com/read/28498497/the-aggravation-of-arthritis-by-periodontitis-is-dependent-of-il-17-receptor-a-activation
#4
Sabrina G de Aquino, Jhimmy Talbot, Fabiane Sônego, Walter M Turato, Renata Grespan, Mario J Avila-Campos, Fernando Q Cunha, Joni A Cirelli
AIM: To evaluate whether Porphyromonas gingivalis-induced periodontitis aggravates the antigen-induced arthritis (AIA) model, and whether this effect is dependent on the Th17/IL-17 signalling pathway. MATERIALS AND METHODS: Antigen-induced arthritis was triggered by local injection of methylated bovine serum albumin into the knee joint of previously immunized C57BL/6 wild-type (WT) and IL-17 receptor A (IL-17RA)-knockout mice. Periodontal disease in naïve or arthritic mice was induced by oral infection with P...
May 12, 2017: Journal of Clinical Periodontology
https://www.readbyqxmd.com/read/28496230/invasive-cervical-resorption-and-the-oro-facial-cleft-patient-a-review-and-case-series
#5
A O'Mahony, C McNamara, A Ireland, J Sandy, J Puryer
Introduction Invasive cervical resorption (ICR) has an unknown aetiology, yet it exhibits very aggressive behaviour compared with typical external root resorption, posing a high risk of tooth loss.Aim To investigate the number of patients at the Dublin Cleft Prosthodontic Department with an oro-facial cleft who experienced ICR and to identify any possible aetiological factors.Materials and method A retrospective investigation of all oro-facial cleft patients treated at the Dublin Cleft Prosthodontic Department, St James's Hospital, Dublin...
May 12, 2017: British Dental Journal
https://www.readbyqxmd.com/read/28483274/predictive-factors-for-alveolar-fenestration-and-dehiscence
#6
A-M Grimoud, V E Gibbon, I Ribot
The purpose of this study was to evaluate the distribution and incidence of two forms of alveolar bone resorption known as fenestration and dehiscence across time and space. To accomplish this a Medieval French population was studied and the results were compared with other studies to examine incidence and distribution of alveolar bone resorption. Thus, 1175 teeth were analysed for 81 individuals, from an agropastoral Medieval (12th-14th century) archaeological site of Vilarnau located in the South of France...
March 22, 2017: Homo: Internationale Zeitschrift Für die Vergleichende Forschung Am Menschen
https://www.readbyqxmd.com/read/28479048/digital-design-of-functional-surgery-for-odontogenic-cyst-intruding-into-maxillary-sinus
#7
Ying Kai Hu, Chi Yang, Guang Zhou Xu, Qian Yang Xie
INTRODUCTION: Traditional Caldwell-Luc approach needs modifications for odontogenic cysts intruding into the maxillary sinus, to preserve sinus mucosa and bony contour. Recently, digital technology has been widely applied to the field of maxillofacial surgery, guiding the surgical plan and improving its accuracy. OBJECTIVE: This study attempted to present and evaluate the functional surgery of odontogenic cysts intruding into the maxillary sinus using a computer-assisted pre-surgical design...
March 19, 2017: Brazilian Journal of Otorhinolaryngology
https://www.readbyqxmd.com/read/28445371/preventing-early-stage-graft-bone-resorption-by-simultaneous-innervation-innervated-iliac-bone-flap-for-mandibular-reconstruction
#8
Lei Wang, Jian-Hua Wei, Xi Yang, Zi-Hui Yang, Mo-Yi Sun, Xiao-Bing Cheng, Li-Qun Xu, De-Lin Lei, Chen-Ping Zhang
BACKGROUND: Postoperative resorption of vascularized bone grafts jeopardizes the success of dental implant(s) and functional rehabilitation of the jaw. Recent evidence supports the crucial role of innervation in bone regeneration and turnover. METHODS: This study reports a new technique for simultaneous innervation of vascularized iliac flaps in mandibular reconstruction, through neurorrhaphy between ilioinguinal nerves, which innervate iliac bone, and inferior alveolar nerves or great auricular nerves...
May 2017: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28422326/alveolar-ridge-dimensional-changes-following-ridge-preservation-procedure-with-novel-devices-part-3-histological-analysis-in-non-human-primate-model
#9
Yingying Su, Jianxia Tang, Seiko Min, Lijia Guo, Yitong Liu, Yilin Xie, Jimin Xiong, Songlin Wang, Mauricio G Araújo, Homayoun H Zadeh, Yi Liu
OBJECTIVES: This study sought to investigate the histological changes following tooth extraction, ridge preservation and augmentation, using novel devices designed to obturate the oral orifice of extraction sockets (SocketKAP™) and provide structural support for sockets with defective bony walls (SocketKAGE™) in a non-human primate model. MATERIAL AND METHODS: Six Macaca fascicularis were imaged by cone beam computed tomography to register their preoperative alveolar bone...
April 19, 2017: Clinical Oral Implants Research
https://www.readbyqxmd.com/read/28421873/facial-alveolar-bone-width-at-the-first-and-second-maxillary-premolars-in-healthy-patients-a-cone-beam-computed-tomography-study
#10
Julio Rojo, José Viña, David Peñarrocha, Miguel Peñarrocha
The purpose was to analyze the thickness of the facial alveolar bone at the first and second maxillary premolars and determinate the percentage of premolars that reached 2 mm in width. A retrospective study analyzing cone beam computed tomography scans from the database of the Oral Surgery Unit of the University of Valencia was performed. Patients with periodontal disease, orthodontic treatment, absence among the first maxillary molars, premolars with endodontic treatment and/or prosthetic restorations were excluded...
April 19, 2017: Journal of Oral Implantology
https://www.readbyqxmd.com/read/28409326/effect-of-corticision-on-orthodontic-tooth-movement-in-a-rat-model-as-assessed-by-rna-sequencing
#11
Qihui Gu, Shuyu Guo, Dongyue Wang, Tingting Zhou, Lin Wang, Zhendong Wang, Junqing Ma
Corticision is a common technique to accelerate orthodontic tooth movement; however, not much is known about the underlying mechanisms. In this study, we investigated the mechanism of alveolar tissue remodeling after corticision in a rat model of tooth movement (TM) by analyzing the differential transcriptome. A total of 36 male rats were equally divided into TM and TM with corticision (TM+C) groups. Alveolar bone response was examined using micro-computed tomography (micro-CT). Osteoclasts and osteoblasts were quantified on tartrate-resistant acid phosphatase (TRAP) and Goldner's trichrome staining...
April 13, 2017: Journal of Molecular Histology
https://www.readbyqxmd.com/read/28392902/detection-of-th17-treg-cells-and-related-factors-in-gingival-tissues-and-peripheral-blood-of-rats-with-experimental-periodontitis
#12
Li Gao, Yajing Zhao, Panpan Wang, Liping Zhang, Chi Zhang, Qianying Chen, Chuanjiang Zhao
OBJECTIVES: This study aimed to investigate the role and the possible mechanisms involved in the immunoregulation of experimental periodontitis by Th17/Treg. MATERIALS AND METHODS: Experimental periodontitis was established by silk thread ligation with Porphyromonas gingivalis daubing in the bilateral maxillary second molar of Male Sprague-Dawley (SD) rats. Alveolar bones were scanned by Micro-CT. Histological examination was stained with H&E. The proportions of Th17 and Treg cells in peripheral blood were detected by flow cytometry...
March 2017: Iranian Journal of Basic Medical Sciences
https://www.readbyqxmd.com/read/28390826/estimation-of-date-of-death-through-wound-healing-of-an-extraction-socket-a-case-report
#13
Joan Viciano, Ruggero D'Anastasio, Cristian D'Ovidio, Sara Costantini, Aldo Carnevale, Luigi Capasso
Surgical extraction of teeth due to dental pathologies is a relatively common procedure in modern man. The healing of the wound that results occurs in gradual and sequential stages, such that the analysis of this repair process can be very useful in forensic investigations on human remains. The following study reports on a particular case where the remodeling of a tooth socket allowed an estimation of the time that had elapsed from the day of the surgical extraction of the tooth to the time of death. The corpse was that of a woman of 34 years...
March 27, 2017: Forensic Science International
https://www.readbyqxmd.com/read/28358289/effect-of-local-hil-10-gene-therapy-on-experimental-periodontitis-in-ovariectomized-rats
#14
Yanfen Li, Souzhi Ma, Jianbin Guo, Jun Jiang, Kai Luo, Fuhua Yan, Yin Xiao
OBJECTIVE: To investigate the effect of local hIL-10 gene therapy on experimental periodontitis in rats and to elucidate the mechanism underlying this effect. MATERIAL AND METHODS: Experimental periodontitis was induced in ovariectomized (OVX) rats using a silk ligature. We then injected 5 μg of hIL-10 plasmid with 5 μl of liposomes or 5 μg of vector plasmid with 5 μl of liposomes into the palatal side of the gingival mucosa of the upper left second molar once every two days...
May 2017: Acta Odontologica Scandinavica
https://www.readbyqxmd.com/read/28343980/nerve-damage-from-bone-allografts-and-xenografts-a-case-series
#15
M Anthony Pogrel
The concept of socket preservation by placing a particulate bone allograft or xenograft into a tooth socket or on the alveolar ridge after tooth removal remains a somewhat controversial topic. The concept is that it will preserve the ridge from resorption and such that subsequent implant insertion will be easier, with fewer complications. However, one particular issue is that these materials, although not directly neurotoxic, appear to be an irritant to the nerves if they come in contact with them. We present a case series demonstrating this complication...
February 27, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28336321/the-histological-and-histomorphometric-changes-in-the-mandible-after-radiotherapy-an-animal-model
#16
Lucas J Poort, Johan H B Ludlage, Nienke Lie, Roland A Böckmann, Jim C E Odekerken, Frank J Hoebers, Peter A W H Kessler
PURPOSE: Approximately 5% of irradiated head and neck cancer patients develop osteoradionecrosis of the mandible. The current non-surgical treatment options for osteoradionecrosis have limited effects and are based on a small number of studies. Therefore, we aimed to enhance the understanding of the pathophysiology of osteoradionecrosis by investigating changes induced by external irradiation in mini-pigs. METHODS: Sixteen Göttingen mini-pigs were divided into four groups for the application in two fractions with total equivalent radiation dosages of 25, 50, 70 Gray, and one group served as control...
February 20, 2017: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28326892/clinical-and-histomorphometric-assessment-of-lateral-alveolar-ridge-augmentation-using-a-corticocancellous-freeze-dried-allograft-bone-block
#17
Roya Shariatmadar Ahmadi, Ferena Sayar, Vahid Rakhshan, Babak Iranpour, Jahanfar Jahanbani, Ahmad Toumaj, Nasrin Akhoondi
Horizontal ridge augmentation with allografts has attracted notable attention because of its proper success rate and the lack of disadvantages of autografts. Corticocancellous block allografts have not been adequately studied on humans. Therefore, this study evaluated clinically and histomorphometrically the increase in ridge with after horizontal ridge augmentation using corticocancellous block allografts, and the implant success after 12 to 18 months post-implantation. In 10 implant patients (3 women, 7 men, 45 years old on average), defective maxillary alveolar ridges were horizontally augmented using freeze-dried bone allograft blocks...
March 22, 2017: Journal of Oral Implantology
https://www.readbyqxmd.com/read/28303642/efficacy-of-collagen-matrix-seal-and-collagen-sponge-on-ridge-preservation-in-combination-with-bone-allograft-a-randomized-controlled-clinical-trial
#18
Zuhair S Natto, Andreas Parashis, Bjorn Steffensen, Rumpa Ganguly, Matthew D Finkelman, Y Natalie Jeong
AIM: To test whether the use of collagen matrix seal (CMS) results in similar hard and soft tissue remodeling to that with collagen sponge (CS) used as barriers 4 months following alveolar ridge preservation (ARP), in combination with freeze-dried bone allograft (FDBA). MATERIALS AND METHODS: Twenty-eight patients were randomly assigned to the two groups. Clinical and radiographic measurements were recorded with the same stent at baseline and 4 months for standardization...
March 16, 2017: Journal of Clinical Periodontology
https://www.readbyqxmd.com/read/28301291/histological-and-histomorphometrical-analysys-on-a-loaded-implant-with-platform-switching-and-conical-connection-a-case-report
#19
Giovanna Iezzi, Flavia Iaculli, Roberta Calcaterra, Adriano Piattelli, Michele Di Girolamo, Luigi Baggi
The association of Morse taper implant-abutment design with the use of a smaller abutment diameter (platform-switching) may improve dental implant success rate and prevent peri-implant bone loss. The aim of the present study was to histologically and histomorphometrically evaluate the behavior of peri-implant tissues around an implant with a conical connection associated with platform-switching. A platform-switched Morse-cone connection implant was inserted in the left posterior mandible in a 61-year-old patient...
March 16, 2017: Journal of Oral Implantology
https://www.readbyqxmd.com/read/28299782/a-test-of-a-skeletal-ageing-method-based-on-resorption-of-the-alveolar-crest-following-tooth-loss-using-a-skeletal-population-of-documented-age-at-death
#20
Simon Mays
OBJECTIVES: Resorption of the alveolar process occurs following tooth loss, and appears to continue for a prolonged period. Previous study (Mays, ) with a known-age collection of human remains suggested the potential of this phenomenon for age estimation in remains of adults who have lost one or more molar teeth. This article tests this ageing technique on another known age group, and attempts to evaluate the impact of some extraneous factors on the method. MATERIALS AND METHODS: The study group comprises adult skeletons (N = 110) of documented age at death from 18th to 19th century London...
March 16, 2017: American Journal of Physical Anthropology
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