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Root resorption

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https://www.readbyqxmd.com/read/28097666/understanding-external-cervical-resorption-patterns-in-endodontically-treated-teeth
#1
M Mavridou, E Hauben, M Wevers, E Schepers, L Bergmans, P Lambrechts
AIM: To understand the pattern of external cervical resorption (ECR) in endodontically treated teeth. To compare characteristics and mechanisms of ECR in root filled teeth with those established in teeth with vital pulps. METHODOLOGY: Seven cases of endodontically treated permanent teeth displaying ECR were investigated. ECR diagnosis was based on clinical findings and radiographic examination with cone-beam computed tomography (CBCT). The extracted teeth were further analysed by a nano-focus computed tomographic (nano-CT) system, hard tissue histology and scanning electron microscopy (SEM)...
January 18, 2017: International Endodontic Journal
https://www.readbyqxmd.com/read/28065972/management-of-root-resorption-with-mineral-trioxide-aggregate-complicated-by-a-luxation-injury-report-of-a-case-with-six-year-follow-up
#2
Adem Kusgoz, Tahsin Yildirim, Cemile Kedici Alp, Mehmet Tanriver
Trauma to the oral region occurs frequently, comprising 5% of all injuries. The most common dental injuries are lateral luxations which can be seen with a prevalence of up to 27% among dental injuries. Ectopic eruption of maxillary canines can lead to root resorption on maxillary lateral incisors especially on apical and middle thirds of the roots. Half of these resorbed lateral incisors show severe resorption, in which the pulp is exposed. This case report describes non-surgical treatment with mineral trioxide aggregate (MTA) and a six-year follow-up of a maxillary lateral incisor, resorbed by ectopic eruption of the canine and affected by lateral luxation injury...
January 2017: JPMA. the Journal of the Pakistan Medical Association
https://www.readbyqxmd.com/read/28062250/autotransplantation-of-third-molars-with-completely-formed-roots-into-surgically-created-sockets-and-fresh-extraction-sockets-a-10-year-comparative-study
#3
H J Yu, P Jia, Z Lv, L X Qiu
The aim of this study was to analyze and compare the long-term clinical outcomes of mature third molar autotransplantation in surgically created sockets and fresh extraction sockets with regard to survival and functional success rates. A total of 65 third molars with completely formed roots were autotransplanted in 60 patients (average age 33.1 years). Thirty-six of the teeth were autotransplanted into surgically created sockets with or without guided bone regeneration (GBR; delayed autotransplantation), while 29 were autotransplanted into fresh extraction sockets (immediate autotransplantation; control group)...
January 3, 2017: International Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28050990/swinging-replantation-a-possible-protocol-for-the-management-of-inverted-impacted-upper-central-incisor-tooth
#4
Seidu A Bello, Deborah J Enebong, Emeka V Obi
Inverted tooth impaction is a rare occurrence. Third molar impaction is the most extensively studied, and only eight cases of inverted third molars have been reported in a literature search of 40 years from 1973 to 2013. In a study, 43.4% of the premaxillary supernumeraries were inverted and 21.1% were transversely oriented, while occasional inverted central incisors have been mentioned in the literature. Severe dilaceration makes the management of this case a big challenge. The case of an 8-year-old boy with an inverted, rotated, and impacted upper left central incisor obstructed by an odontome is presented here...
January 1, 2017: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/28050063/a-radiographic-study-of-external-apical-root-resorption-in-patients-treated-with-single-phase-fixed-orthodontic-therapy
#5
S S Agarwal, S S Chopra, Prasanna Kumar, B Jayan, K Nehra, Mohit Sharma
BACKGROUND: External apical root resorption (EARR) is one of the most common iatrogenic consequences of orthodontic tooth movement. Many factors like gender, duration, orthodontic force and duration of orthodontic treatment have been implicated to cause EARR. METHODS: Pre- and post-treatment OPGs of 60 orthodontic patients (30 males and 30 females) who had undergone treatment with a single phase of fixed orthodontic therapy were randomly selected from institutional archives...
December 2016: Medical Journal, Armed Forces India
https://www.readbyqxmd.com/read/28044198/meloxicam-medication-reduces-orthodontically-induced-dental-root-resorption-and-tooth-movement-velocity-a-combined-in-vivo-and-in-vitro-study-of-dental-periodontal-cells-and-tissue
#6
Christian Kirschneck, Matthias Meier, Kathrin Bauer, Peter Proff, Jochen Fanghänel
Non-steroidal anti-inflammatory drugs (NSAID) are used to alleviate pain sensations during orthodontic therapy but are also assumed to interfere with associated pseudo-inflammatory reactions. In particular, the effects of partially selective COX-2 inhibition over the constitutively expressed COX-1 (11:1) on periodontal cells and tissue, as induced by the NSAID meloxicam, remain unclear. We investigate possible adverse side-effects and potentially useful beneficial effects during orthodontic therapy and examine underlying cellular and tissue reactions...
January 3, 2017: Cell and Tissue Research
https://www.readbyqxmd.com/read/28042441/quantitive-evaluation-of-dentin-sialoprotein-dsp-using-microbeads-a-potential-early-marker-of-root-resorption
#7
L Lombardo, F Carinci, M Martini, D Gemmati, M Nardone, G Siciliani
PURPOSE: This study had the aim of comparing two different methods of analysing dentin sialoprotein (DSP) in the gingival crevicular fluid (GCF): the conventional eLISA approach and a new method involving the use of magnetic micro-beads coated with an antibody specific for DSP prior to eLISA analysis. MATERIALS AND METHODS: GCF was taken from six patients following twelve weeks of orthodontic treatment using paper strips inserted into the mesial and distal sulci of the upper incisors, and analysed using both methods...
July 2016: Oral & Implantology
https://www.readbyqxmd.com/read/28035998/tgf-%C3%AE-and-physiological-root-resorption-of-deciduous-teeth
#8
Emi Shimazaki, Takeo Karakida, Ryuji Yamamoto, Saeko Kobayashi, Makoto Fukae, Yasuo Yamakoshi, Yoshinobu Asada
The present study was performed to examine how transforming growth factor β (TGF-β) in root-surrounding tissues on deciduous teeth regulates the differentiation induction into odontoclasts during physiological root resorption. We prepared root-surrounding tissues with (R) or without (N) physiological root resorption scraped off at three regions (R1-R3 or N1-N3) from the cervical area to the apical area of the tooth and measured both TGF-β and the tartrate-resistant acid phosphatase (TRAP) activities. The TGF-β activity level was increased in N1-N3, whereas the TRAP activity was increased in R2 and R3...
December 27, 2016: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28024874/dental-and-temporomandibular-joint-pathology-of-the-california-mountain-lion-puma-concolor-couguar
#9
A Aghashani, A S Kim, P H Kass, F J M Verstraete
Skulls from 91 California mountain lions (Puma concolor couguar) were examined macroscopically and radiographically. The majority of the skulls were from young adult animals (57.1%). The skull specimens were from 42 male (46.1%) and 34 female (37.4%) animals, while the gender was unknown for the remainder. The majority (94.5%) of teeth were present for examination. Only 11 teeth were identified as absent congenitally; five of these teeth were maxillary first molar teeth and three were maxillary second premolar teeth...
December 23, 2016: Journal of Comparative Pathology
https://www.readbyqxmd.com/read/28024782/effect-of-piezocision-on-root-resorption-associated-with-orthodontic-force-a-microcomputed-tomography-study
#10
Braydon M Patterson, Oyku Dalci, Alexandra K Papadopoulou, Suman Madukuri, Jonathan Mahon, Peter Petocz, Axel Spahr, M Ali Darendeliler
INTRODUCTION: The purpose of this study was to investigate the effect of piezocision on orthodontically induced inflammatory root resorption. METHODS: Fourteen patients were included in this split-mouth study; 1 side was assigned to piezocision, and the other side served as the control. Vertical corticotomy cuts of 4 to 5 mm in length were performed on either side of each piezocision premolar, and 150-g buccal tipping forces were applied to the premolars. After 4 weeks, the maxillary first premolars were extracted and scanned with microcomputed tomography...
January 2017: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/28024757/expression-of-inflammatory-cytokines-and-chemokines-in-replanted-permanent-teeth-with-external-root-resorption
#11
Juliana Vilela Bastos, Tarcilia A Silva, Enrico A Colosimo, Maria Ilma S Côrtes, Daniela Augusta B Ferreira, Eugenio Marcos A Goulart, Ricardo S Gomez, Walderez O Dutra
INTRODUCTION: The progressive forms of inflammatory external root resorption (IERR) and replacement external root resorption (RERR) are serious complications and the main causes of tooth loss after replantation. This study aimed to investigate the expression pattern of inflammatory molecules in extracted human teeth presenting with external root resorption (ERR) after replantation. METHODS: Root fragments from 22 teeth showing IERR and 20 teeth with RERR were triturated using a homogenizer to extract inflammatory molecules...
December 23, 2016: Journal of Endodontics
https://www.readbyqxmd.com/read/27994322/accuracy-in-the-diagnosis-of-vertical-root-fractures-external-root-resorptions-and-root-perforations-using-cone-beam-computed-tomography-with-different-voxel-sizes-of-acquisition
#12
Fernanda Paula Bragatto, Liogi Iwaki Filho, Amanda Vessoni Barbosa Kasuya, Mariliani Chicarelli, Alfredo Franco Queiroz, Wilton Mitsunari Takeshita, Lilian Cristina Vessoni Iwaki
AIM: The aim of this study is to assess the accuracy of images acquired with cone-beam computed tomography (CBCT) in the identification of three different root alterations. MATERIALS AND METHODS: Forty human premolars were allocated to four experimental groups (n = 10): sound teeth (control), vertical root fracture (VRF), external root resorption (ERR), and root perforation (RP). After the root alterations had been produced, four teeth were randomly assembled into 10 macerated mandibles and submitted to CBCT...
November 2016: Journal of Conservative Dentistry: JCD
https://www.readbyqxmd.com/read/27994316/evaluation-of-enterococcus-faecalis-adhesion-penetration-and-method-to-prevent-the-penetration-of-enterococcus-faecalis-into-root-cementum-confocal-laser-scanning-microscope-and-scanning-electron-microscope-analysis
#13
Rahul S Halkai, Mithra N Hegde, Kiran R Halkai
AIM: To ascertain the role of Enterococcus faecalis in persistent infection and a possible method to prevent the penetration of E. faecalis into root cementum. METHODOLOGY: One hundred and twenty human single-rooted extracted teeth divided into five groups. Group I (control): intact teeth, Group II: no apical treatment done, Group III divided into two subgroups. In Groups IIIa and IIIb, root apex treated with lactic acid of acidic and neutral pH, respectively. Group IV: apical root cementum exposed to lactic acid and roughened to mimic the apical resorption...
November 2016: Journal of Conservative Dentistry: JCD
https://www.readbyqxmd.com/read/27994312/cytotoxicity-of-two-available-mineral-trioxide-aggregate-cements-and-a-new-formulation-on-human-gingival-fibroblasts
#14
Maryam Torshabi, Reza Amid, Mahdi Kadkhodazadeh, Sara Eslami Shahrbabaki, Fahimeh S Tabatabaei
AIM: The purpose of this study was to investigate the cytotoxicity of nanohybrid mineral trioxide aggregate (MTA) in comparison with calcium-enriched mixture (CEM) cement and MTA-Angelus, using human gingival fibroblasts (HGFs). MATERIALS AND METHODS: Nine disc-shaped specimens of each material (in 2 set stat: A, set for 24 h; B, set for 30 min; and C, fresh stat) were prepared. HGFs were exposed to tested materials' extracts or control media. Cytotoxicity testing was performed using the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazoliumbromide assay in two time intervals...
November 2016: Journal of Conservative Dentistry: JCD
https://www.readbyqxmd.com/read/27982227/effects-of-zoledronic-acid-on-orthodontic-tooth-movement-in-rats
#15
Marcel Durante Brunet, Cristiano Miranda de Araujo, Aline Cristina Batista Rodrigues Johann, Elisa Souza Camargo, Orlando Motohiro Tanaka, Odilon Guariza
The purpose of this study was to assess the effects of the administration of zoledronic acid (ZA) during orthodontic movement in rats. A hundred and twenty male Wistar rats were applied force of 30 cN with spring closed nickel-titanium to move the upper right first molar to mesial. In the Control Movement group (CM), only tooth movement was performed; the Control Acid Zoledronic group (CAZ) received a single dose (0.1 mg/kg) of ZA; the Experimental Acid Zoledronic group (EAZ) received a single dose (0.1 mg/kg) one week prior to the start of tooth movement; and the Control Without movement group (CWM) that received no drug and without application of tooth movement...
September 2016: Brazilian Dental Journal
https://www.readbyqxmd.com/read/27977857/influence-of-cone-beam-computed-tomography-filters-on-diagnosis-of-simulated-endodontic-complications
#16
F S Verner, P S D'Addazio, C N Campos, K L Devito, S M Almeida, R B Junqueira
AIM: To evaluate the influence of cone-beam computed tomography (CBCT) filters on diagnosis of simulated endodontic complications. METHODOLOGY: Sixteen human teeth, in three mandibles, were submitted to the following simulated endodontic complications: (G1) fractured file, (G2) perforations in the canal walls, (G3) deviated cast post, and (G4) external root resorption. The mandibles were submitted to CBCT examination (I-Cat(®) Next Generation). Five oral radiologists evaluated the images independently with and without XoranCat(®) software filters...
December 15, 2016: International Endodontic Journal
https://www.readbyqxmd.com/read/27976596/influence-of-non-impacted-third-molars-on-the-pathologies-of-adjacent-second-molars-a-retrospective-study
#17
Zhi-Bang Li, Hong-Lei Qu, Li-Na Zhou, Bei-Min Tian, Fa-Ming Chen
BACKGROUND: Although the removal of impacted third molars (I-M3s) is common in dental clinics, the decision to retain or remove asymptomatic non-impacted third molars (N-M3s) presents a significant challenge. This study investigated the influence of N-M3s on the pathologies of the adjacent second molars (A-M2s). METHODS: The clinical status of M3s was evaluated, and the presence of distal caries, the external root resorption (ERR) and the alveolar bone loss of A-M2s were assessed by orthopantomograms (OPGs)...
December 15, 2016: Journal of Periodontology
https://www.readbyqxmd.com/read/27967312/retrospective-survival-study-of-trabecular-tantalum-implants-immediate-flapless-placement-in-posterior-extraction-sockets
#18
Edgard El Chaar, Alejandro Castaà  O
A retrospective review of patient records was conducted in a single private practice to evaluate the efficacy of immediately placing a novel implant design in posterior jaw locations using a flapless technique. Forty-two patients (22 males, 20 females) with a mean (SD) age of 60.2 (7.6) years (range = 31-68) presented with 1-2 non-restorable molar (maxillary = 14; mandibular = 8) or premolar (maxillary = 20; mandibular = 1) teeth compromised by periodontal disease, endodontic failure, root resorption, root fracture or severe caries...
December 14, 2016: Journal of Oral Implantology
https://www.readbyqxmd.com/read/27960049/effect-of-bisphosphonates-on-root-resorption-after-tooth-replantation-a-systematic-review
#19
Shariq Najeeb, Fahad Siddiqui, Zohaib Khurshid, Sana Zohaib, Muhammed Sohail Zafar, Shazia Akbar Ansari
BACKGROUND/AIM: Replantation of avulsed teeth may lead to root resorption. Bisphosphonates (BPs), a class of drugs of used to treat resorptive diseases of the bone such as osteoporosis and Paget's disease, have been observed to exert an anti-resorptive effect on periodontal bone as well. The anti-resorptive properties of BPs could prove them useful in preventing root resorption of replanted avulsed teeth. The aim of this systematic review was to analyze and summarise the currently available literature concerning the use of BPs in preventing root resorption of avulsed teeth...
December 13, 2016: Dental Traumatology: Official Publication of International Association for Dental Traumatology
https://www.readbyqxmd.com/read/27960046/radiographic-evidence-of-traumatic-injuries-to-primary-incisors-without-accompanying-clinical-signs
#20
Gideon Holan, Elizabeth Yodko
BACKGROUND/AIMS: In epidemiological studies, traumatic dental injuries in children are usually determined from clinical signs or parents' reports. Radiographs are used in dental trauma centers but not in field surveys. The aim of this study was to evaluate the proportion of patients who present with radiographic evidence of trauma without any clinical signs of a history of TDI. METHODS: The prevalence of traumatic dental injuries was assessed from the records of 674 pre-school children at their first visit to a private dental practice...
December 13, 2016: Dental Traumatology: Official Publication of International Association for Dental Traumatology
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