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Root resorption

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https://www.readbyqxmd.com/read/29140387/full-mouth-rehabilitation-with-calvarium-bone-grafts-and-dental-implants-for-a-papillon-lef%C3%A3-vre-syndrome-patient-case-report
#1
Bassam M Kinaia, Kristyn Hope, Ahmed Zuhaili, Jean Francois Tulasne
Papillon-Lefèvre syndrome (PLS) is a rare autosomal recessive disorder of keratinization associated with palmoplantar keratoderma and severe periodontitis resulting in complete edentulism in late adolescence. The pathognomonic dental features of PLS are pathologic migration, hypermobility, and exfoliation of the teeth without any signs of root resorption. It has been suggested that an effective way to treat PLS patients presenting early in the disease progression is extraction of the erupted primary dentition or hopeless permanent teeth followed by antibiotic coverage with periodontal therapy for the remaining teeth...
November 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/29090124/the-relationships-between-the-arrangement-of-teeth-root-resorption-and-dental-maturity-in-bovine-mandibular-incisors
#2
Jin-Kyu An, Yoshiro Matsumoto, Takashi Ono
OBJECTIVE: The objective of this study is to investigate the eruption pattern and root resorption of the bovine anterior dentition in relation to growth-related parameters based on dental maturity. METHODS: A cross-sectional study was conducted on 110 bovine anterior mandibles by using standard radiography, cone-beam computed tomography (CBCT), and actual measurements. We determined the relationships between the stages of dental maturity by using a modification of Demirjian's method and various growth-related parameters, such as the activity of the root-resorbing tissue and mobility of the deciduous teeth...
November 2017: Korean Journal of Orthodontics
https://www.readbyqxmd.com/read/29075422/marsupialization-of-a-large-dentigerous-cyst-in-the-mandible-with-orthodontic-extrusion-of-three-impacted-teeth-a-case-report
#3
Nedal Abu-Mostafa, Arshad Abbasi
The dentigerous cyst (DC) is the most common type of developmental odontogenic cyst. It is usually asymptomatic and associated with the crown of an unerupted or impacted tooth. However, after a long duration, it is likely to cause significant bone resorption, cortical expansion, and tooth displacement. This report presents a large infected DC in the mandible of a 12-year-old female patient. The DC was located inferior to badly decayed primary molars and surrounded three impacted permanent teeth: canine, first premolar, which had a dilacerated root, and second premolar...
September 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/29073902/clinical-and-radiographic-evaluation-of-pulpectomy-in-primary-teeth-a-18-months-clinical-randomized-controlled-trial
#4
Xiaoxian Chen, Xinggang Liu, Jie Zhong
BACKGROUND: To avoid untoward changes when primary teeth are replaced by permanent teeth, resorption of the material used in primary teeth root canal filling should occur at the same rate as root resorption. The Aim of this study was to compare the success rates of a mixed primary root canal filling (MPRCF, ingredients: zinc oxide-eugenol [ZOE], iodoform, calcium hydroxide) to those of ZOE and Vitapex in pulpectomised primary molars. METHODS: One hundred and sixty primary molars from 155 children (average age 5...
October 27, 2017: Head & Face Medicine
https://www.readbyqxmd.com/read/29073278/soil-phosphorus-functional-fractions-and-tree-tissue-nutrient-concentrations-influenced-by-stand-density-in-subtropical-chinese-fir-plantation-forests
#5
Xiang-Min Fang, Xiu-Lan Zhang, Ying-Ying Zong, Yang Zhang, Song-Ze Wan, Wen-Sheng Bu, Fu-Sheng Chen
Stand density regulation is an important measure of plantation forest management, and phosphorus (P) is often the limiting factor of tree productivity, especially in the subtropics and tropics. However, the stand density influence on ecosystem P cycling is unclear in Chinese fir (Cunninghamia lanceolata) plantations of subtropical China. We collected rhizosphere and bulk soils, leaves and twigs with different ages and roots with different orders to measure P and nitrogen (N) variables in Chinese fir plantations with low density (LDCF) and high density (HDCF) at Fujian and Hunan provinces of subtropical China...
2017: PloS One
https://www.readbyqxmd.com/read/29072646/-clinical-and-radiological-features-of-inflammatory-lesions-in-the-lower-molars-area
#6
V A Syomkin, A G Nadtochiy, A V Kuzin, P A Kolotikov, E V Syemkina
The study objective was to analyze clinical manifestations by various forms of inflammatory destructive lesions in lower molars area. The study included 54 patients aged 20 to 66 years with odontogenic alveolar bone defects in lower molars area. Typical clinical and radiological signs are described for each type of destructive lesions. Sinus tract located more coronal and 'areolar' bone resorption may indicate root perforation. Clinical and radiological features may help in choosing optimal surgical tactic.
2017: Stomatologii︠a︡
https://www.readbyqxmd.com/read/29066283/the-extent-of-pyroptosis-varies-in-different-stages-of-apical-periodontitis
#7
Ran Cheng, Yuchao Feng, Rui Zhang, Wen Liu, Lei Lei, Tao Hu
Apical periodontitis (AP) is an inflammation affecting the periapical region of tooth root. Microbial pathogens activate inflammasomes and promote the production of pro-inflammatory cytokines. Caspase-1-mediated pyroptosis is a possible mechanism involved in the initiation and progression of AP. The purpose of this study was to evaluate the role of caspase-1 and pyroptosis on AP at different stages. Human periapical inflammatory tissue was collected to study chronic AP stage. Human periodontal ligament fibroblasts (hPDLFs) were stimulated with lipopolysaccharide in vitro for 24h to simulate early AP stage...
October 21, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/29042731/dimensional-evaluation-of-root-resorption-areas-in-differing-severity-of-chronic-periodontitis-a-scanning-electron-microscopic-study
#8
Aaditi C Mahajan, Abhay P Kolte, Rajashri A Kolte, Anshuka A Agrawal
AIM: The aim of this study was to evaluate root surface alterations in terms of location, length, and depth of root resorption in the gingival, middle, and apical third of the mesial and distal surfaces of the root in healthy and periodontally affected teeth with chronic periodontitis. MATERIALS AND METHODS: Teeth diagnosed with differing severity of chronic periodontitis, as assessed by clinical and radiographic parameters of bone destruction, were observed under a scanning electron microscope...
July 2017: Contemporary Clinical Dentistry
https://www.readbyqxmd.com/read/29036235/-medicaments-and-oral-healthcare-5-adverse-effects-of-medications-and-over-the-counter-drugs-on-teeth
#9
C de Baat, P G M A Zweers, C van Loveren, A Vissink
Intrinsic tooth discoloration may occur as an adverse effect of fluoride and tetracyclines. Extrinsic tooth discoloration may occur as superficial staining or as discoloration of the superficial pellicle and/or biofilm due to chlorhexidine, liquid iron salts, essential oils, some antibiotics and stannous fluoride. Inhibition of orthodontic tooth movement has been reported due to the use of prostaglandin synthetase inhibitors. If medications or over-the-counter drugs induce hyposalivation or contain much sucrose, caries may develop...
October 2017: Nederlands Tijdschrift Voor Tandheelkunde
https://www.readbyqxmd.com/read/29033530/orthodontic-management-of-a-dilacerated-central-incisor-and-partially-impacted-canine-with-unilateral-extraction-a-case-report
#10
A Sumathi Felicita
AIM: To align a dilacerated maxillary central incisor and partially impacted canine with unilateral extraction in a young patient with skeletal deep bite. MATERIALS AND METHODS: A 14 year old male patient reported to the hospital with skeletal deep bite (basal plane angle-17°), severe horizontal pattern of growth (Go-Gn to Sn -22°), upright maxillary incisors (U1 to NA -26°) and retroclined lower incisors (L1 to NB -11°). The maxillary left central incisor was dilacerated, and the maxillary left canine was partially impacted...
October 2017: Saudi Dental Journal
https://www.readbyqxmd.com/read/29032048/cytokine-profile-changes-in-gingival-crevicular-fluid-after-placement-different-brackets-types
#11
Ana Zilda Nazar Bergamo, Paulo Nelson-Filho, Cássio do Nascimento, Renato Corrêa Viana Casarin, Márcio Zaffalon Casati, Marcela Cristina Damião Andrucioli, Érika Calvano Kuchler, Daniele Lucca Longo, Léa Assed Bezerra da Silva, Mírian Aiko Nakane Matsumoto
OBJECTIVE: The aim of this study was to examine the relationship between bracket design and ratio of five proinflammatory cytokine, in gingival crevicular fluid (GCF), and bacterial adhesion without tooth movement influence. DESIGN: The sample was comprised of 20 participants, aged 11 to 15 years old (mean age: 13.3 years±1.03). A conventional Gemini™ metallic bracket and two self-ligating brackets, In-Ovation(®)R and SmartClip™, were bonded to the maxillary incisors and canines...
September 25, 2017: Archives of Oral Biology
https://www.readbyqxmd.com/read/29019553/biodentinetm-is-cytocompatible-with-human-primary-osteoblasts
#12
Miriam Zaccaro Scelza, Joyce Costa Nascimento, Licinio Esmeraldo da Silva, Vinícius Shott Gameiro, Gustavo DE Deus, Gutemberg Alves
Calcium silicate-based materials have been widely studied due to their resemblance to, and similar applicability of, mineral trioxide aggregate (MTA). Among these, Biodentine™ (BD) was specifically designed as a "dentin replacement" material for applications such as root perforations, apexification, treatment of resorptive lesions, and as a retrograde filling material. The present study aimed to assess the in vitro response of human primary osteoblasts to BD using MTA AngelusTM as a reference material, by simultaneously analyzing three different cell viability parameters, namely mitochondrial activity, membrane integrity, and cell density...
September 28, 2017: Brazilian Oral Research
https://www.readbyqxmd.com/read/29017523/single-tooth-torque-correction-in-the-lower-frontal-area-by-a-completely-customized-lingual-appliance
#13
Collin Jacobs, Milena Katzorke, Dirk Wiechmann, Heiner Wehrbein, Rainer Schwestka-Polly
BACKGROUND: Aim of this study was to analyze the efficacy and precision of the completely customized lingual appliance (CCLA) regarding the single tooth torque correction. The study also examined external apical root resorptions as possible side effects of torque correction and the changings of the periodontal situation. METHODS: A case series of three patients were included. The patients showed a single tooth torque problem with a gingival recession and were treated with the CCLA...
October 10, 2017: Head & Face Medicine
https://www.readbyqxmd.com/read/29016741/the-effect-of-low-level-laser-therapy-on-orthodontically-induced-root-resorption-a-pilot-double-blind-randomized-controlled-trial
#14
Doreen Ng, Ambrose K Chan, Alexandra K Papadopoulou, Oyku Dalci, Peter Petocz, Mehmet Ali Darendeliler
Background: The effect of low-level laser therapy (LLLT) on accelerating orthodontic tooth movement has been extensively studied; however, there is limited knowledge on the use of LLLT on orthodontic root resorption. Objective: To investigate the effect of LLLT on orthodontically induced inflammatory root resorption (OIIRR) and to compare the difference between pulsed and continuous LLLT on OIIRR. Trial design: Double-blind, single-centre 3-arm parallel split-mouth randomized controlled trial...
September 7, 2017: European Journal of Orthodontics
https://www.readbyqxmd.com/read/28994389/molecular-architecture-underlying-fluid-absorption-by-the-developing-inner-ear
#15
Keiji Honda, Sung Huhn Kim, Michael C Kelly, Joseph C Burns, Laura Constance, Xiangming Li, Fei Zhou, Michael Hoa, Matthew W Kelley, Philine Wangemann, Robert J Morell, Andrew J Griffith
Mutations of SLC26A4 are a common cause of hearing loss associated with enlargement of the endolymphatic sac (EES). Slc26a4 expression in the developing mouse endolymphatic sac is required for acquisition of normal inner ear structure and function. Here, we show that the mouse endolymphatic sac absorbs fluid in an SLC26A4-dependent fashion. Fluid absorption was sensitive to ouabain and gadolinium but insensitive to benzamil, bafilomycin and S3226. Single-cell RNA-seq analysis of pre- and postnatal endolymphatic sacs demonstrates two types of differentiated cells...
October 10, 2017: ELife
https://www.readbyqxmd.com/read/28990126/effectiveness-and-predictability-of-titanium-prepared-platelet-rich-fibrin-for-the-management-of-multiple-gingival-recessions
#16
Bilge Cansu Uzun, Esra Ercan, Mustafa Tunalı
OBJECTIVE: Titanium-prepared platelet-rich fibrin (T-PRF) is activated with titanium, which results in a more mature and aggregated form than PRF. In our previous studies, we established that the fibrin carpet formed with titanium had a firmer network structure, and longer resorption time in the tissue than the fibrin carpet formed with glass. The purpose of this randomized controlled clinical trial is to compare the effects of autogenous T-PRF and connective tissue graft (CTG). MATERIALS AND METHODS: A total of 114 Miller Class I/II gingival recessions with abrasion defects were treated either T-PRF (63 teeth) or CTG (51 teeth) using a modified tunnel technique...
October 8, 2017: Clinical Oral Investigations
https://www.readbyqxmd.com/read/28990014/atypical-root-resorption-following-root-fractures-in-primary-teeth
#17
Ok Hyung Nam, Mi Sun Kim, Gyu-Tae Kim, Sung Chul Choi
Atypical root resorption (ARR) is the condition of a superficial and circumferential resorption process along the lateral and/or apical root surface of a primary maxillary incisor. This case series demonstrates longitudinal observations of six patients with atypical root resorption following root-fractured primary incisors. The characteristics of atypical root resorption were different from pathologic root resorption.
October 6, 2017: Quintessence International
https://www.readbyqxmd.com/read/28989148/-effect-of-growth-hormone-on-osteopontin-expression-during-orthodontic-tooth-movement-in-rats
#18
Hualong Ju, Xiuying Cai
To investigate the effect of growth hormone on osteopontin expression during orthodontic tooth movement in rats.
 Methods: Forty male Wistar rats (2 weeks, average weight 200 g) were randomly divided into a control group and an experimental group (n=20 per group). The experimental group received subcutaneous injections of growth hormone at a dose of 0.15 U/(kg.d), and the control group received equivalent volumes of saline. A nickel-titanium spring was fixed between the maxillary incisors and the left upper first molar with a force of 0...
September 28, 2017: Zhong Nan da Xue Xue Bao. Yi Xue Ban, Journal of Central South University. Medical Sciences
https://www.readbyqxmd.com/read/28986956/decoupling-the-direct-and-indirect-effects-of-climate-on-plant-litter-decomposition-and-terrestrial-nutrient-cycling
#19
Vidya Suseela, Nishanth Tharayil
Decomposition of plant litter is a fundamental ecosystem process that can act as a feedback to climate change by simultaneously influencing both the productivity of ecosystems and the flux of carbon dioxide from the soil. The influence of climate on decomposition from a post-senescence perspective is relatively well known; in particular, climate is known to regulate the rate of litter decomposition via its direct influence on the reaction kinetics and microbial physiology on processes downstream of tissue senescence...
October 7, 2017: Global Change Biology
https://www.readbyqxmd.com/read/28985106/a-comparative-study-of-the-effect-of-the-intrusion-arch-and-straight-wire-mechanics-on-incisor-root-resorption-a-randomized-controlled-trial
#20
Marcio Rodrigues de Almeida, Aline Siqueira Butzke Marçal, Thais Maria Freire Fernandes, Juliana Brito Vasconcelos, Renato Rodrigues de Almeida, Ravindra Nanda
OBJECTIVE: To analyze and compare external apical root resorption (EARR) of maxillary incisors treated by intrusion arch or continuous archwire mechanics. MATERIALS AND METHODS: This cone-beam computed tomography (CBCT) study analyzed 28 deep bite patients in the permanent dentition who were randomly divided into two groups: Group 1, 12 patients with initial mean age of 15.1 ± 1.6 years and mean overbite of 4.6 ± 1.2 mm treated with the Connecticut intrusion arch (CIA) in the upper arch (Ortho Organizers, Carlsbad, Calif) for a mean period of 5...
October 6, 2017: Angle Orthodontist
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