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Root resorption

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https://www.readbyqxmd.com/read/29771300/evaluation-of-orthodontically-induced-external-root-resorption-following-orthodontic-treatment-using-cone-beam-computed-tomography-cbct-a-systematic-review-and-meta-analysis
#1
Aikaterini Samandara, Spyridon N Papageorgiou, Ioulia Ioannidou-Marathiotou, Smaragda Kavvadia-Tsatala, Moschos A Papadopoulos
Background: Orthodontically induced external root resorption (OIRR) is a pathologic consequence of orthodontic tooth movement. However, the limitations of two-dimensional radiography suggest that cone beam computed tomography (CBCT) with its three-dimensional capabilities might be more suitable to assess OIRR. Objective: The aim of this study was to assess in an evidence-based manner data on linear or volumetric OIRR measurements of permanent teeth by means of CBCT, during and/or after the end of orthodontic treatment...
May 15, 2018: European Journal of Orthodontics
https://www.readbyqxmd.com/read/29765898/periodontal-healing-following-non-surgical-repair-of-an-old-perforation-with-pocket-formation-and-oral-communication
#2
Saeed Asgary, Prashant Verma, Ali Nosrat
Iatrogenic perforations negatively impact the outcome of endodontic treatments. Studies on prognostic factors showed that perforations in the coronal third of the root with periodontal pocket formation have an unfavorable prognosis. A 36-year-old female was referred for endodontic evaluation of tooth #13 with a history of an iatrogenic perforation, happened 3 years ago. There was a sinus tract associated with perforation, 10 mm probing on the mesial and mesio-palatal, bleeding on probing, radiolucent lesion adjacent to the perforation and complete resorption of the interdental bone between teeth #13 and #12...
May 2018: Restorative Dentistry & Endodontics
https://www.readbyqxmd.com/read/29763354/randomized-controlled-trial-of-pulpotomy-in-primary-molars-using-mta-and-formocresol-compared-to-3mixtatin-a-novel-biomaterial
#3
Zahra Jamali, Vajiheh Alavi, Ebrahim Najafpour, Naser Asl Aminabadi, Sajjad Shirazi
OBJECTIVE: This study was conducted to compare the efficacy of 3Mixtatin (a combination of simvastatin and 3Mix antibiotic) with MTA and Formocresol for the pulpotomy of primary molars. STUDY DESIGN: 114 children aged 3-6 years old with 150 primary molars were randomly allocated to three groups. MTA, Formocresol or 3Mixtatin were used for Pulpotomies. Hard setting zinc oxide eugenol was used to cover these materials. The teeth were restored with amalgam. Blinded radiographic and clinical examinations were conducted at 6, 12 and 24 months after treatment for the presence of pain, tenderness to palpation and percussion, sinus tract, swelling, presence of internal or external root resorption, inter-radicular radiolucency, and periapical lesion...
May 15, 2018: Journal of Clinical Pediatric Dentistry
https://www.readbyqxmd.com/read/29758960/biomechanical-investigation-of-orthodontic-treatment-planning-based-on-orthodontic-force-measurement-and-finite-element-method-before-implementation-a-case-study
#4
Jianlei Wu, Yunfeng Liu, Jianxing Zhang, Wei Peng
BACKGROUND: Orthodontic treatment planning (OTP) is primarily depended on clinical experiences of orthodontists at present, while equivocal OTP would increase the possibility of treatment failure. OBJECTIVE: The objective was to investigate a methodology for quantitatively evaluating OTP, using theoretical analyses, orthodontic forces measurement (OFM) and finite element method (FEM). METHODS: An OTP was theoretically designed based on a clinical case and forces on incisors in OTP were measured on a specialized platform...
April 27, 2018: Technology and Health Care: Official Journal of the European Society for Engineering and Medicine
https://www.readbyqxmd.com/read/29752746/anti-resorptive-effect-of-pamidronate-on-extraction-socket-wall-in-dogs
#5
Jae-Kook Cha, Yoo-Kyung Sun, Myong Ji Kim, Mariano Sanz, Ui-Won Jung
AIM: The aim of this experimental in vivo investigation was to assess the anti-resorptive effect of low concentration pamidronate on the buccal plate in fresh extraction sockets. MATERIALS AND METHODS: The distal roots of the third premolars were extracted bilaterally in six dogs. A collagen matrix loaded with either pamidronate (test group) or saline (control group) was positioned on the outer surface of buccal bone immediately after tooth extraction and subsequently covered with a coronally advanced flap...
May 12, 2018: Clinical Oral Implants Research
https://www.readbyqxmd.com/read/29751369/central-giant-cell-lesion-of-the-jaws-an-updated-analysis-of-2270-cases-reported-in-the-literature
#6
REVIEW
Bruno Ramos Chrcanovic, Carolina Cavalieri Gomes, Ricardo Santiago Gomez
PURPOSE: To review all available data published on central giant cell lesion (CGCL) of the jaws into a comprehensive analysis of its clinical/radiologic features, with emphasis on the predictive factors associated with its recurrence. METHODS: An electronic search was undertaken in 5 databases (February/2018), looking for reporting cases of CGCLs. RESULTS: 365 publications were included, comprising 2270 lesions. CGCLs were more prevalent in women and the mandible...
May 11, 2018: Journal of Oral Pathology & Medicine
https://www.readbyqxmd.com/read/29751206/influence-of-root-exudation-of-white-lupine-lupinus-albus-l-on-uranium-phytoavailability-in-a-naturally-uranium-rich-soil
#7
Pascale Henner, Félix Brédoire, Antoine Tailliez, Frédéric Coppin, Sylvie Pierrisnard, Virginie Camilleri, Catherine Keller
Mechanisms of uranium (U) transfer from soil to plants remain poorly understood. The kinetics of supply of U to the soil solution from solid phases could be a key point to understand its phytoavailability and implications for environmental risk assessment. Root activity, particularly the continuous release of organic acids in the rhizosphere, could have an effect on this supply. We tested the impact of citrate exudation by roots of Lupinus albus, either P-sufficient (P+) or P-deficient (P-), on the phytoavailability of U from a naturally contaminated soil (total content of 413 mg U kg-1 ) using a rhizotest design...
May 8, 2018: Journal of Environmental Radioactivity
https://www.readbyqxmd.com/read/29747758/inhibitory-effect-of-cudratricusxanthone-a-on-osteoclast-differentiation-and-function
#8
Eun-Hwa Choi, Eun-Nam Kim, Gil-Saeong Jeong
BACKGROUND: Cudratricusxanthone A (CTXA) was isolated from Cudrania tricuspidata and its anti-inflammatory, hepatoprotective, and anti-proliferative activities have previously been studied in vitro. However, effects of CTXA on osteoclast differentiation have not been investigated. PURPOSE: In this study, the effect of CTXA from C. tricuspidata on in vitro osteoclastogenesis was studied. DESIGN/METHODS: CTXA was isolated from the roots of C...
April 1, 2018: Phytomedicine: International Journal of Phytotherapy and Phytopharmacology
https://www.readbyqxmd.com/read/29747189/the-ins-and-outs-of-root-resorption
#9
Shanon Patel, Navid Saberi
Root resorption is a poorly understood phenomenon and is often misdiagnosed and, as a result, inappropriately treated. The aim of this paper is to provide a practical guide for diagnosis of root resorption lesions using a simple classification, and to describe the principles of management of these resorptive defects in everyday practice.
May 11, 2018: British Dental Journal
https://www.readbyqxmd.com/read/29740057/mechanical-adaptation-of-trabecular-bone-morphology-in-the-mammalian-mandible
#10
Peter J Watson, Laura C Fitton, Carlo Meloro, Michael J Fagan, Flora Gröning
Alveolar bone, together with the underlying trabecular bone, fulfils an important role in providing structural support against masticatory forces. Diseases such as osteoporosis or periodontitis cause alveolar bone resorption which weakens this structural support and is a major cause of tooth loss. However, the functional relationship between alveolar bone remodelling within the molar region and masticatory forces is not well understood. This study investigated this relationship by comparing mammalian species with different diets and functional loading (Felis catus, Cercocebus atys, Homo sapiens, Sus scrofa, Oryctolagus cuniculus, Ovis aries)...
May 8, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29737544/external-cervical-resorption-part-2-management
#11
REVIEW
S Patel, F Foschi, R Condon, T Pimentel, B Bhuva
Effective management of external cervical resorption (ECR) depends on accurate assessment of the true nature and accessibility of ECR; this has been discussed in part 1 of this 2 part paper. This aim of this paper is firstly, to review the literature in relation to the management of ECR, and secondly, based on the available evidence describe different strategies for the management of ECR. In cases where ECR is supracrestal, superficial and with limited circumferential spread a surgical repair without root canal treatment is the preferred approach...
May 8, 2018: International Endodontic Journal
https://www.readbyqxmd.com/read/29732305/cone-beam-computed-tomography-based-diagnosis-and-treatment-simulation-for-a-patient-with-a-protrusive-profile-and-a-gummy-smile
#12
Shunsuke Uesugi, Toshihiro Imamura, Satoshi Kokai, Takashi Ono
For patients with bimaxillary protrusion, significant retraction and intrusion of the anterior teeth are sometimes essential to improve the facial profile. However, severe root resorption of the maxillary incisors occasionally occurs after treatment because of various factors. For instance, it has been reported that approximation or invasion of the incisive canal by the anterior tooth roots during retraction may cause apical root damage. Thus, determination of the position of the maxillary incisors is key for orthodontic diagnosis and treatment planning in such cases...
May 2018: Korean Journal of Orthodontics
https://www.readbyqxmd.com/read/29730894/cytokine-expression-in-response-to-root-repair-agents
#13
R R Oliveira, W L F Tavares, A L Reis, V A Silva, L Q Vieira, A P Ribeiro Sobrinho
AIM: To evaluate the expression of TNF-α, IL-6, IFN-γ, TGF-β, IL-4, IL-10, RANKL, RANK and OPG on mouse calvarial bone treated with MTA, Geristore® and Emdogain® . METHODOLOGY: Bone wounds were made on the heads of C57BL/6 mice, breaking the periosteum and the cortical surface of the calvaria. Each repair agent was inserted into sectioned Eppendorf microtubes and placed on the bone wound, and soft tissues were sutured. At 14 and 21 days, animals were sacrificed and the treated region was dissected...
May 6, 2018: International Endodontic Journal
https://www.readbyqxmd.com/read/29714703/effect-of-root-canal-obturation-with-calcium-silicate-materials-on-ph-change-in-simulated-root-resorption-defects
#14
Vivek Aggarwal, Mamta Singla, Sanjay Miglani, Ritu Sharma
This study evaluated the effect of 3 commercially available calcium silicate materials (CSMs) on pH changes in simulated root resorption defects. Simulated root resorption defects were prepared on the facial root surface of 40 mandibular premolars. The depth of each defect was individually calculated to standardize the remaining dentin thickness to 1 mm. Prepared canals were obturated with the 3 CSMs. Ten specimens were kept as controls, filled with unbuffered normal saline. The pH measurements were taken at 1 hour, 6 hours, 1 day, 1 week, 2 weeks, 3 weeks, 1 month, and 2 months...
May 2018: General Dentistry
https://www.readbyqxmd.com/read/29714701/delayed-tooth-reimplantation-with-4-year-follow-up-the-management-of-ankylosis-during-facial-growth
#15
Franciny Querobim Ionta, Priscilla Santana Pinto Gonçalves, Heitor Marques Honório, Gabriela Cristina de Oliveira, Catarina Ribeiro Barros de Alencar, Natália Mello Santos, Thais Marchini de Oliveira, Daniela Rios
This case report describes the consequences of delayed (24 hours) reimplantation of an avulsed maxillary central incisor, findings over a 4-year follow-up period, and the management of ankylosis during facial growth. After a traumatic event, a 10-year-old boy was taken to a hospital emergency department due to injuries to his face, including avulsion of the maxillary left central incisor. Despite the short amount of time before arriving at the hospital (10 minutes) and use of the correct storage medium (milk), the tooth was not reimplanted, and the parents did not receive instructions to seek dental treatment...
May 2018: General Dentistry
https://www.readbyqxmd.com/read/29714068/effects-of-different-force-magnitudes-on-corticotomy-assisted-orthodontic-tooth-movement-in-rats
#16
Kriangkrai Kraiwattanapong, Bancha Samruajbenjakun
OBJECTIVES: To investigate the effects of light and heavy forces with corticotomy on tooth movement rate, alveolar bone response, and root resorption in a rat model. MATERIALS AND METHODS: The right and left sides of 40 male Wistar rats were randomly assigned using the split-mouth design to two groups: light force with corticotomy (LF) and heavy force with corticotomy (HF). Tooth movement was performed on the maxillary first molars using a nickel-titanium closed-coil spring delivering either 10 g (light force) or 50 g (heavy force)...
May 1, 2018: Angle Orthodontist
https://www.readbyqxmd.com/read/29707027/autotransplantation-surgical-repositioning-of-retained-canine-and-apical-filling-of-two-incisors-with-root-resorption
#17
Norberto Juárez Broon, Cuauhtémoc Bello Hernández, Oscar Ivan Ruiz Montañez, Elizabeth Díaz Rosales, Jaime Padrón Santana, Alejandra Zulema Calderón Escamilla
The purpose is to show the autotransplantation and surgical repositioning of a retained canine, and the apical filling of central and lateral resorbed incisors from a 12-year-old female patient, healthy and with clinical absence of left maxillary canine. Radiographically, the retained canine between the resorbed central and lateral incisors was observed. Root canal treatment of the canine was performed after 8 weeks; apical curettage and placement of bovine graft in inter-incisal zone was done after 4 months...
2018: Iranian Endodontic Journal
https://www.readbyqxmd.com/read/29694352/effects-of-loxoprofen-on-the-apical-root-resorption-during-orthodontic-tooth-movement-in-rats
#18
Taeko Yamamoto, Masato Kaku, Hiromi Sumi, Yuka Yashima, Jin Izumino, Kotaro Tanimoto
Studies have revealed that severe apical root resorption during tooth movement is caused by the noninfective inflammatory reaction of apical root tissues. We hypothesized that loxoprofen can suppress apical root resorption during tooth movement. Cyclic tensile force (CTF) of 10 kPa was applied to the human pulp cells for 48 hours by the Flexcell Strain Unit. Loxoprofen (10 and 100 μM) was added to the culture cells, and expression of cyclooxygenase (COX)-1, COX-2, interleukin (IL)-1β, receptor activator of nuclear factor kappa-B ligand (RANKL), tumor necrosis factor (TNF)-α, and macrophage colony-stimulating factor (M-CSF) were examined...
2018: PloS One
https://www.readbyqxmd.com/read/29687103/surgical-extrusion-a-simplified-esthetic-method-of-treating-non-restorable-teeth-rationale-and-case-report
#19
Riccardo Becciani, Davide Faganello, Mauro Fradeani
The restoration of teeth that have been compromised by loss of crown and radicular structure due to caries, fractures, root resorption or iatrogenic lesions could result in the violation of the biologic width, with consequent gingival inflammation, loss of attachment, and alveolar bone loss. It is essential in these cases to obtain an adequate enough portion of the tooth structure to allow for a restoration that respects the biologic width. This can be achieved using a procedure that allows for the extrusion of the root in a single step, thereby shifting the compromised site from subgingival to supragingival...
2018: International Journal of Esthetic Dentistry
https://www.readbyqxmd.com/read/29687001/comparison-between-two-radiological-methods-for-assessment-of-tooth-root-resorption-an-in-vitro-study
#20
Sabina Saccomanno, Pier Carmine Passarelli, Bruno Oliva, Cristina Grippaudo
Purpose: This study aims to verify the validity of the radiographic image and the most effective radiological techniques for the diagnosis of root resorption to prevent, cure, and reduce it and to verify if radiological images can be helpful in medical and legal situations. Methods: 19 dental elements without root resorption extracted from several patients were examined: endooral and panoramic radiographs were performed, with traditional and digital methods. Then the root of each tooth was dipped into 3-4 mm of 10% nitric acid for 24 hours to simulate the resorption of the root and later submitted again to radiological examinations and measurements using the same criteria and methods...
2018: BioMed Research International
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