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Root resorption

Alejandro Iglesias-Linares, Lorri Ann Morford, James Kennedy Hartsfield
When orthodontic patients desire shorter treatment times with aesthetic results and long-term stability, it is important for the orthodontist to understand the potential limitations and problems that may arise during standard and/or technology-assisted accelerated treatment. Bone density plays an important role in facilitating orthodontic tooth movement (OTM), such that reductions in bone density can significantly increase movement velocity. Lifestyle, genetic background, environmental factors, and disease status all can influence a patients' overall health and bone density...
October 20, 2016: Current Osteoporosis Reports
Erica Dos Santos Carvalho, Rogério Hadid Rosa, Flávia de Moura Pereira, Ana Lia Anbinder, Isabel Mello, Sandra Marcia Habitante, Denise Pontes Raldi
The search for effective protocols to reduce the incidence of root resorptions and allow periodontal ligament repair is still challenging, given the unpredictable outcome of late tooth replantation. The aim of this study was to assess the effects of both high-power diode laser irradiation (DL) and basic fibroblast growth factor (FGF) on the periodontal healing of replanted teeth after extended extra-oral dry time METHODS: Maxillary incisors of 50 male rats were extracted and assigned to three experimental and two control groups (n = 10)...
October 17, 2016: Dental Traumatology: Official Publication of International Association for Dental Traumatology
N M Al-Namnam, P Nambiar, P Shanmuhasuntharam, M Harris
Dengue is a mosquito transmitted flaviviral infection which can give rise to severe haemorrhage (dengue haemorrhagic fever/DHF) and with capillary leakage induces hypovolemic shock (dengue shock syndrome/DSS). Although dengue symptoms and complications have been known for many decades there has only been one documented case of osteonecrosis of the maxilla which was treated by excision of the necrotic bone. In this case of dengue infection, extensive maxillary osteonecrosis and minimal root resorption appeared to follow factitious injury with a toothpick but resolved with nonsurgical management...
October 15, 2016: Australian Dental Journal
Osmar A Cuoghi, Francielle Topolski, Lorraine P de Faria, Marcos R de Mendonça
AIM: To evaluate the correlation between pain and tissue damage in response to orthodontic tooth movement (OTM), such as hyalinization and external apical root resorption (EARR). MATERIALS AND METHODS: The literature review was used as a methodological strategy, following the knowledge development process - constructivist (ProKnow-C). Study axes were defined and keywords that best represented each axis were selected. The terms were submitted to an adherence test and validation, resulting in 12 keyword combinations...
September 1, 2016: Journal of Contemporary Dental Practice
Nisa Gul Amuk, Gökmen Kurt, Yusuf Baran, Volkan Seyrantepe, Melis Kartal Yandim, Aysun Adan, Secil Akyildiz Demir, Yagmur Kiraz, Mehmet Fatih Sonmez
AIM: The aim of this study is to evaluate and compare therapeutic effects of mesenchymal stem cell (MSCs) and osteoprotegerin (OPG) gene transfer applications on inhibition and/or repair of orthodontically induced inflammatory root resorption (OIIRR). MATERIALS AND METHODS: Thirty Wistar rats were divided into four groups as untreated group (negative control), treated with orthodontic appliance group (positive control), MSCs injection group, and OPG transfected MSCs [gene therapy (GT) group]...
October 12, 2016: European Journal of Orthodontics
Zynab Jawad, Fiona Carmichael, Nadine Houghton, Claire Bates
OBJECTIVE: The aim of the study was to review all cases referred for cone beam computed tomography (CBCT) to the department of dental radiology at the Leeds Dental Institute to aid diagnosis of root resorption associated with impacted canines. We aimed to establish if referral for and reporting of these CBCT assessments were in compliance with current guidelines. In addition, we introduced a new and innovative tool to aid reporting of CBCT images of root resorption associated with an impacted tooth...
October 7, 2016: Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology
Inger Kjær
INTRODUCTION: This three-part article summarizes ideas already described elsewhere by the author. Part 1. New way of diagnosing the dentition. For diagnostic purposes origin and appearance of the three tissue types - ectoderm, mesoderm (ectomesenchyme) and peripheral nerves - are depicted on orthopantomograms. Same tissue types are marked on the root surface (peri-root sheet). Part 2. Factors provoking root resorption. Resorption can be explained from the composition of the peri-root sheet...
September 2016: L' Orthodontie Française
Michael Mah, Kenji Takada
INTRODUCTION: When the mandibular permanent second molar becomes impacted, it is identified as a malocclusion that needs treatment as it often leads to unwanted complications such as caries and periodontitis of the adjacent permanent first molar. Other less common complications include root resorption of the adjacent first molar root or continued root development to be in close proximity to the inferior dental alveolar nerve. MATERIALS AND METHODS: This paper seeks to differentiate various levels of severity of impaction and review treatment options that are considered clinically available for the proper management of the impacted mandibular permanent second molar...
September 2016: L' Orthodontie Française
Jenny A F Vermeer, Greetje A P Renders, Marion A van Duin, Ineke D C Jansen, Lieneke F Bakker, Sophie A Kroon, Teun J de Vries, Vincent Everts
OBJECTIVES: Bisphosphonates are widely used to treat bone diseases such as osteoporosis. However, they may cause osteonecrosis of the jaw. Here, we investigated whether in vivo exposure to bisphosphonates has a different effect on long bone and jaw osteoclasts, and on the turnover of these different bones. MATERIALS AND METHODS: Zoledronic acid (0.5 mg/kg weekly) was administered intraperitoneally to 3-month-old female mice for up to 6 months. The effects on the number of osteoclasts, bone mineralization, and bone formation were measured in the long bones and in the jaw...
October 5, 2016: Oral Diseases
Shaul Lin, Nir Pilosof, Munir Karawani, Ronald Wigler, Arieh Y Kaufman, Sorin T Teich
BACKGROUND: This study explores the pattern of complications occurrence resulting from traumatic dental injuries, the relation of this pattern to the number of years from the time of the injury to its first diagnosis, and other contributing characteristics such as root development and trauma characteristic. MATERIAL AND METHODS: Patients' data treated following dental trauma from 2002 to 2014 were classified and grouped according to age, gender, tooth type, injury type, diagnosis and the time that elapsed between the traumatic event and the diagnosis of complications (TIC)...
October 2016: Journal of Clinical and Experimental Dentistry
R Guarnieri, C Cavallini, R Vernucci, M Vichi, R Leonardi, E Barbato
The prevalence of impacted maxillary canine is reported to be between 1% and 3%._The lack of monitoring and the delay in the treatment of the impacted canine can cause different complications such as: displacement of adjacent teeth, loss of vitality of neighbouring teeth, shortening of the dental arch, follicular cysts, canine ankylosis, recurrent infections, recurrent pain, internal resorption of the canine and the adjacent teeth, external resorption of the canine and the adjacent teeth, combination of these factors...
October 1, 2016: Medicina Oral, Patología Oral y Cirugía Bucal
Na-Young Chang, Jae Hyun Park, Sang-Cheol Kim, Kyung-Hwa Kang, Jin-Hyoung Cho, Jin-Woo Cho, Hong-Eek Jang, Jong-Moon Chae
Treatment of impacted dilacerated incisors is challenging for clinicians because of the prominent position of the teeth and the abnormality of their roots. We report on 2 patients who had horizontally upward impacted and severely dilacerated maxillary central incisors. The first patient's root perforated the labial plate without significant resorption, and the second patient's root was resorbed. Both patients were treated by a surgical-orthodontic approach, and the crowns of the impacted teeth were brought into the arches by closed forced eruption...
October 2016: American Journal of Orthodontics and Dentofacial Orthopedics
Guilherme Janson, Ana Niederberger, Daniela Gamba Garib, Waleska Caldas
INTRODUCTION: The objective of this investigation was to compare the amount of apical root resorption in nonextraction treatment of Class II malocclusions with and without Class II elastics. METHODS: A sample of 54 patients with Class II Division 1 malocclusion, retrospectively selected, was divided into 2 groups. The elastic group consisted of 27 patients who were exclusively treated with fixed appliances associated with elastics, and the headgear group consisted of 27 patients treated with fixed appliances and extraoral headgear...
October 2016: American Journal of Orthodontics and Dentofacial Orthopedics
Louise Hauge Matzen, Lars Schropp, Rubens Spin-Neto, Ann Wenzel
OBJECTIVES: To 1)compare pathological findings related to the mandibular third molar in panoramic images (PAN) and CBCT; 2)estimate the frequency of removals if pathological findings were indicative; and 3)assess factors in PAN associated with resorption and marginal bone loss at the second molar as observed in CBCT. METHODS: 379 mandibular third molars were examined with PAN and CBCT. Four observers registered resorption and marginal bone loss at the second molar and increased periodontal space at the third molar in both imaging modalities...
September 28, 2016: Dento Maxillo Facial Radiology
Margarita Yoshpe, Arieh Kaufman, Shaul Lin, Eran Gabay, Shmuel Einy
: Invasive cervical resorption (ICR), a destructive form of external root resorption, is characterized by invasion of the fibrovascular tissue. This phenomenon is very rare and appears in 0.02% of the general population where the leading factors are orthodontics in addition to trauma, restorations, and bleaching. Heavy orthodontic force may increase the incidence to 1%. One of the main concerns regarding ICR is that it is often misdiagnosed with conventional diagnostic tools. In recent decades, a cone beam computed tomography (CBCT) imaging technique has become more common and can lead to a more accurate diagnosis and treatment plan...
September 26, 2016: Quintessence International
Yi Liu, Haiming Du, Yunfei Wang, Mengmeng Liu, Shijian Deng, Linlin Fan, Lili Zhang, Yao Sun, Qi Zhang
INTRODUCTION: Recent studies indicate that the osteoprotegerin (OPG)/RANKL/RANK pathway takes part in root resorption. However, the relationship between OPG and root resorption is vague. The purpose of our study was to investigate the role of OPG in root resorption. METHODS: The first molars of the mandibles of osteoprotegerin-knockout (Opg-KO) mice and wild-type (WT) mice were evaluated by micro-computed tomography, histology, and immunohistochemistry at 4, 6, 26, and 52 weeks...
October 2016: Journal of Endodontics
Maïtena Dumont, Paul Tafforeau, Thomas Bertin, Bhart-Anjan Bhullar, Daniel Field, Anne Schulp, Brandon Strilisky, Béatrice Thivichon-Prince, Laurent Viriot, Antoine Louchart
BACKGROUND: The dentitions of extinct organisms can provide pivotal information regarding their phylogenetic position, as well as paleobiology, diet, development, and growth. Extant birds are edentulous (toothless), but their closest relatives among stem birds, the Cretaceous Hesperornithiformes and Ichthyornithiformes, retained teeth. Despite their significant phylogenetic position immediately outside the avian crown group, the dentitions of these taxa have never been studied in detail...
2016: BMC Evolutionary Biology
Shipra Sepolia, Atul Ps Kushwah, Amanpreet Singh Natt, Lipika Vashisht, Sushil Kumar Sahoo, Santosh Kumar Subudhi
INTRODUCTION: New design of brackets have been introduced in the field of orthodontics in the recent past, and one of such advancement is the self-ligating brackets. These brackets are said to have less friction, with a shorter period of treatment. Better patient acceptance and good treatment results are some of the other advantages offered by self-ligating brackets. Hence, we comparatively evaluated root resorption of anterior teeth by self-ligating and conventional preadjusted brackets in cases of severe anterior crowding in class I patients...
2016: Journal of Contemporary Dental Practice
L A Costa, C C C Ribeiro, L M Cantanhede, J F Santiago Júnior, M R de Mendonça, A L P Pereira
Intrusive luxation is a severe form of dental trauma and there is no consensus regarding its management for permanent teeth. A systematic review and meta-analysis was performed to identify the appropriate treatment for teeth with intrusive luxation. The PubMed/MEDLINE, Embase, US Clinical Trials, and ISRCTN Registry electronic databases were used to search for articles in English and unpublished studies without a date limit. Eligible studies evaluated periodontal results (root resorption as the primary outcome; marginal bone defects and/or pulpal changes as secondary outcomes) after spontaneous re-eruption (SRE), orthodontic repositioning (ORP), or surgical repositioning (SRP) for patients with one or more traumatically intruded permanent teeth...
September 17, 2016: International Journal of Oral and Maxillofacial Surgery
Jozef Mincik, Daniel Urban, Silvia Timkova
Root resorption is a pathological process involving loss of hard dental tissues. It may occur as a consequence of dental trauma, orthodontic treatment, and bleaching, and occasionally it accompanies periodontal disease. Although the mechanism of resorption process is examined in detail, its etiology is not fully understood. Wide open apical foramen is more difficult to manage and the root canal may often overfill. In this report we present two cases of root resorption and describe means for its clinical management...
2016: Case Reports in Dentistry
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