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https://www.readbyqxmd.com/read/29345716/endodontium-together-or-separately
#1
Adriana Kleinert, Lukas Kleinert, Monika Ozimirska, Renata Chałas
Endodontium, otherwise referred to as pulp-dentin complex or endodont. This term includes two tooth tissues: dentin and pulp, which constitute a structural and functional unity. These tissues have a huge, inseparable influence on each other - the pulp (inter alia) nourishes the dentine, while the dentin forms a protective barrier for the pulp. They develop from the papillary tissue (Latin: papilladentis) from mesenchymal tissue. Nevertheless, in clinical practice this structural-functional complex is often treated as two separate tissues, and not as a whole...
January 18, 2018: Folia Morphologica (Warsz)
https://www.readbyqxmd.com/read/29324319/dental-age-estimation-employing-cbct-scans-enhanced-with-mimics-software-comparison-of-two-different-approaches-using-pulp-tooth-volumetric-analysis
#2
Muhammad Khan Asif, Phrabhakaran Nambiar, Shani Ann Mani, Norliza Binti Ibrahim, Iqra Muhammad Khan, Prema Sukumaran
The methods of dental age estimation and identification of unknown deceased individuals are evolving with the introduction of advanced innovative imaging technologies in forensic investigations. However, assessing small structures like root canal volumes can be challenging in spite of using highly advanced technology. The aim of the study was to investigate which amongst the two methods of volumetric analysis of maxillary central incisors displayed higher strength of correlation between chronological age and pulp/tooth volume ratio for Malaysian adults...
January 4, 2018: Journal of Forensic and Legal Medicine
https://www.readbyqxmd.com/read/29313816/osteopontin-regulates-dentin-and-alveolar-bone-development-and-mineralization
#3
B L Foster, M Ao, C R Salmon, M B Chavez, T N Kolli, A B Tran, E Y Chu, K R Kantovitz, M Yadav, S Narisawa, J L Millán, F H Nociti, M J Somerman
The periodontal complex is essential for tooth attachment and function and includes the mineralized tissues, cementum and alveolar bone, separated by the unmineralized periodontal ligament (PDL). To gain insights into factors regulating cementum-PDL and bone-PDL borders and protecting against ectopic calcification within the PDL, we employed a proteomic approach to analyze PDL tissue from progressive ankylosis knock-out (Ank-/-) mice, featuring reduced PPi, rapid cementogenesis, and excessive acellular cementum...
December 4, 2017: Bone
https://www.readbyqxmd.com/read/29306536/orthodontic-movement-after-regenerative-endodontic-procedure-case-report-and-long-term-observations
#4
Antonis Chaniotis
INTRODUCTION: Although regenerative treatment approaches in teeth with incomplete root formation and pulp necrosis have become part of the suggested therapeutic endodontic spectrum, little is known about the effect of orthodontic movement in the tissue that has been regenerated. Furthermore, as the number of adults undergoing orthodontic treatment increases, there is an increasing need to investigate the changes that these tissues may undergo during orthodontic movement. Here we describe the alterations observed after the application of orthodontic forces in a case of an apically root-fractured necrotic immature root that had been managed with regenerative endodontic procedures in the past...
January 3, 2018: Journal of Endodontics
https://www.readbyqxmd.com/read/29304423/pulpal-blood-flow-recorded-from-exposed-dentine-with-a-laser-doppler-flow-meter-using-red-or-infrared-light
#5
Kanittha Kijsamanmith, Noppakun Vongsavan, Bruce Matthews
OBJECTIVE: To determine the percentage of the blood flow signal that is derived from dental pulp when recording from exposed dentine in a human premolar. DESIGN: Recordings were made from 7 healthy teeth in 5 subjects (aged 22-33 yr.) with a laser Doppler flow meter (Periflux 4001) using either a red (635 nm) or an infrared (780 nm) laser. After exposing dentine above the buccal pulpal horn (cavity diam. 1.6 mm, depth 3 mm) and isolating the crown with opaque rubber dam, blood flow was recorded alternately with infrared or red light from the exposed dentine under four conditions: before and after injecting local anaesthetic (3% Mepivacaine without vasoconstrictor) (LA) over the apex of the root of the tooth; after exposing the pulp by cutting a buccal, class V cavity in the tooth; and after sectioning the coronal pulp transversely through the exposure...
December 16, 2017: Archives of Oral Biology
https://www.readbyqxmd.com/read/29301094/induced-post-traumatic-apexification-20-year-follow-up-and-morphological-study-after-new-fracture
#6
Federica Fonzar, Leopoldo Forner, Riccardo Fabian-Fonzar, Carmen Llena
Apexification is an endodontic technique used in immature necrotic teeth, the primary goal of which is to induce a calcified barrier in roots with open apices and to promote the continuation of apical root development. A 7-year-old patient with a coronal fracture in a maxillary central incisor was treated with an apexification technique using calcium hydroxide. The apical closure was obtained after one year, then a permanent root canal filling was performed. The tooth was monitored for a period of 20 years, up to when a trauma caused its extraction...
January 1, 2018: Annals of Anatomy, Anatomischer Anzeiger: Official Organ of the Anatomische Gesellschaft
https://www.readbyqxmd.com/read/29298406/a-miniature-swine-model-for-stem-cell-based-de-novo-regeneration-of-dental-pulp-and-dentin-like-tissue
#7
Xiaofei Zhu, Jie Liu, Zongdong Yu, Chao-An Chen, Hacer Aksel, Adham A Azim, George T-J Huang
The goal of this study was to establish mini-swine as a large animal model for stem cell-based pulp regeneration studies. Swine dental pulp stem cells (sDPSCs) were isolated from mini-swine and characterized in vitro. For in vivo studies, we first employed both ectopic and semi-orthotopic study models using severe combined immunodeficiency mice. One is hydroxyapatite-tricalcium phosphate (HA/TCP) model for pulp-dentin complex formation, and the other is tooth fragment model for complete pulp regeneration with new dentin depositing along the canal walls...
January 3, 2018: Tissue Engineering. Part C, Methods
https://www.readbyqxmd.com/read/29289709/periostin-dentin-matrix-protein-1-and-p2rx7-ion-channel-in-human-teeth-and-periodontal-ligament
#8
I Menéndez-Diaz, J D Muriel, O García-Suárez, A Obaya, S Cal, J Cobo, J A Vega, T Cobo
The periostin is a matricellular protein present in the human periodontal ligament and human dental pulp-derived cells lines, that up-regulates the in vitro expression of some genes involved in the dentin mineralization, such as dentin matrix protein 1 and P2×7-ion channel receptor. Here we investigated the distribution of periostin in human teeth and periodontal ligaments, mapping in parallel the localization of dentin matrix protein 1 and P2×7-ion channel receptor to establish whether or not they are expressed in the same places as periostin...
December 28, 2017: Annals of Anatomy, Anatomischer Anzeiger: Official Organ of the Anatomische Gesellschaft
https://www.readbyqxmd.com/read/29284978/successful-surgical-management-of-palatogingival-groove-using-platelet-rich-fibrin-and-guided-tissue-regeneration-a-novel-approach
#9
J V Karunakaran, Susan Mathew Fenn, N Jayaprakash, N Ragavendran
Palatogingival groove also known as radicularlingual groove is a developmental anomaly involving the lingual surface of the maxillary incisors. They are inconspicuous, funnel-shaped, extend for varying distances on root surface and occur due to infolding of the hertwigs epithelial root sheath. This encourages adherence of microorganisms and plaque to levels significant for pathological changes resulting in endodontic and periodontal lesions. The variations in anatomy of the tooth as a cause of pulp necrosis in teeth of anterior maxillary segment should be considered by the clinician when other etiological factors are ruled out...
November 2017: Journal of Pharmacy & Bioallied Sciences
https://www.readbyqxmd.com/read/29284931/are-tooth-prints-a-hard-tissue-equivalence-of-finger-print-in-mass-disaster-a-rationalized-review
#10
REVIEW
Shaik Kamal Sha, B Vengal Rao, M Sirisha Rao, K V Halini Kumari, Sudarshan Kumar Chinna, Divya Sahu
Personal identification methods may not be efficient when bodies are decomposed, burned, in cases of mass disasters when soft tissue cannot provide reliable information or has been lost. Various methods currently employed in forensic odontology for personal identification include comparing with antemortem dental charts, rugoscopy, denture labeling, DNA analysis from dental pulp, bite mark analysis, etc., Recently, there is growing interest in the study of enamel rod end patterns. These enamel rod end patterns are termed as "Tooth prints" and the study of these prints is known as "Ameloglyphics" (amelo: Enamel, Glyphics: Carvings)...
November 2017: Journal of Pharmacy & Bioallied Sciences
https://www.readbyqxmd.com/read/29279779/preeruptive-intracoronal-radiolucencies-detection-and-nine-years-monitoring-with-a-series-of-dental-radiographs
#11
Chanika Manmontri, Phattaranant May Mahasantipiya, Papimon Chompu-Inwai
Preeruptive intracoronal radiolucencies (PEIRs) are mostly incidentally found by routine radiographic examination of unerupted teeth. PEIRs are classified into two types according to the nature of the lesion: progressive and nonprogressive. A case report of a 17-year-old boy with a nonprogressive PEIR on the permanent mandibular left second molar is presented. The lesion was initially detected on an unerupted tooth at age eight years, eight months. It was clinically and radiographically assessed yearly. Cone beam computed tomography (CBCT) was used to evaluate the lesion's size and location when the patient was 11 and 14 years old...
2017: Case Reports in Dentistry
https://www.readbyqxmd.com/read/29279548/concept-and-clinical-application-of-the-resin-coating-technique-for-indirect-restorations
#12
Toru Nikaido, Junji Tagami, Hirofumi Yatani, Chikahiro Ohkubo, Tomotaro Nihei, Hiroyasu Koizumi, Toshio Maseki, Yuichiro Nishiyama, Tomoyoshi Takigawa, Yuji Tsubota
The resin-coating technique is one of the successful bonding techniques used for the indirect restorations. The dentin surfaces exposed after cavity preparation are coated with a thin film of a coating material or a dentin bonding system combined with a flowable composite resin. Resin coating can minimize pulp irritation and improve the bond strength between a resin cement and tooth structures. The technique can also be applied to endodontically treated teeth, resulting in prevention of coronal leakage of the restorations...
December 27, 2017: Dental Materials Journal
https://www.readbyqxmd.com/read/29275850/outcomes-of-direct-pulp%C3%A2-capping-by-using-either-proroot-mineral-trioxide-aggregate-or-biodentine-in-permanent-teeth-with-carious-pulp-exposure-in-6-to-18-year-old-patients-a-randomized-controlled-trial
#13
Nuttaporn Parinyaprom, Areerat Nirunsittirat, Patchanee Chuveera, Sakarat Na Lampang, Tanida Srisuwan, Thanapat Sastraruji, Puangporn Bua-On, Sophon Simprasert, Issaraporn Khoipanich, Thitida Sutharaphan, Suthida Theppimarn, Narumol Ue-Srichai, Waritorn Tangtrakooljaroen, Papimon Chompu-Inwai
INTRODUCTION: This study aimed to compare the success rates of direct pulp capping (DPC) by using either ProRoot Mineral Trioxide Aggregate (MTA) or Biodentine in the cariously exposed permanent teeth of 6- to 18-year-old patients. Gray discoloration was also evaluated. METHODS: Fifty-nine cariously exposed permanent teeth, including teeth with diagnosis of normal pulp, reversible pulpitis, or irreversible pulpitis, early periapical involvement, and exposure size of up to 2...
December 21, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/29275849/management-of-intruded-immature-maxillary-central-incisor-with-pulp-necrosis-and-severe-external-resorption-by-regenerative-approach
#14
Giorgos N Tzanetakis
INTRODUCTION: Intrusive luxation is one of the most severe traumatic injuries of permanent teeth that may adversely affect the pulp and the periodontium. Pulp necrosis and root resorption are the main pathologic entities associated with this injury. The present report describes the endodontic management of an intruded immature maxillary central incisor presented with pulp necrosis and severe inflammatory root resorption by using the regenerative approach. METHODS: A 7-year-old boy with dental trauma to the anterior maxillary region was referred for the management of a traumatized maxillary central incisor...
December 21, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/29273495/influence-of-apical-diameter-on-the-outcome-of-regenerative-endodontic-treatment-in-teeth-with-pulp-necrosis-a-review
#15
REVIEW
Yanjun Fang, Xinhuan Wang, Jingjing Zhu, Chaonan Su, Ying Yang, Liuyan Meng
INTRODUCTION: The aim of this review was to evaluate whether the apical diameter of teeth with necrotic pulp affects the outcomes of regenerative endodontic treatment and to determine the minimal apical size needed to obtain proper pulp revascularization. METHODS: A literature search was performed from January 1, 2001, to November 25, 2016. Studies that satisfied the inclusion criteria were subjected to data extraction and analysis. RESULTS: In total, 14 studies with 85 patients were included...
December 19, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/29244244/mineral-apposition-rates-in-coronal-dentine-of-mandibular-first-molars-in-soay-sheep-results-of-a-fluorochrome-labeling-study
#16
Patricia Kahle, Carsten Witzel, Uwe Kierdorf, Kai Frölich, Horst Kierdorf
We studied the spatio-temporal variation of mineral apposition rate (MAR) in postnatally formed coronal dentine of mandibular first molars from Soay sheep repeatedly injected with different fluorochromes. MARs declined along the cuspal to cervical crown axis, and from early to late formed dentine, i.e., from the dentine at the enamel-dentine-junction (EDJ) to the dentine adjacent to the dentine-pulp-interface (DPI). Highest mean MARs (about 21 µm/day) were recorded in cuspal dentine formed in the period of 28-42 days after birth...
December 15, 2017: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://www.readbyqxmd.com/read/29243397/effect-of-strong-tooth-bleaching-with-38-hydrogen-peroxide-on-marginal-seal-of-dental-restorations-using-self-etch-and-total-etch-adhesives
#17
Morakot Piemjai, Spun Lenglerdphol
The purpose of this study was to evaluate the distance and/or thickness of dye penetration at enamel and cementum/dentin margins of restorations before and after vital bleaching. Class V cavities were prepared on extracted human premolars and restored with light-cured resin composite using either AQ-Bond or Single-Bond2 adhesives. Four conditions: no bleaching (control), restored before bleaching (RB), bleached and immediately restored (BIR), bleached and stored in artificial saliva for 7 days then restored (B7R), were used for each adhesive group...
December 15, 2017: Journal of Esthetic and Restorative Dentistry
https://www.readbyqxmd.com/read/29240205/regenerative-treatment-of-periodontal-intrabony-defects-using-autologous-dental-pulp-stem-cells-a-1-year-follow-up-case-series
#18
Mario Aimetti, Francesco Ferrarotti, Mara Noemi Gamba, Marta Giraudi, Federica Romano
The present case series aimed to explore the potential clinical benefits of the application of dental pulp stem cells (DPSCs) in the regenerative treatment of deep intrabony defects. A total of 11 isolated intrabony defects in 11 chronic periodontitis patients were accessed with a minimally invasive flap and filled with DPSCs loaded on a collagen sponge. A tooth requiring extraction for impaction or malpositioning was used as an autologous source for DPSCs. An average clinical attachment level gain of 4.7 ± 1...
January 2018: International Journal of Periodontics & Restorative Dentistry
https://www.readbyqxmd.com/read/29238950/age-estimation-in-older-adults-use-of-pulp-tooth-ratios-calculated-from-tooth-sections
#19
Lori D'Ortenzio, Tracy Prowse, Michael Inskip, Bonnie Kahlon, Megan Brickley
OBJECTIVES: Accurate age estimates are foundational for bioarchaeological research, yet the ability to accurately age older adult skeletons remains elusive. This study uses a new version of pulp/tooth area calculations to investigate chronological age of older archaeological individuals. MATERIALS AND METHODS: Pulp/tooth area ratios were calculated on modern control teeth (n = 10) that were first radiographed and then sectioned for comparative analysis. Pulp/tooth area ratios were determined on sectioned teeth using ImageJ software for: (a) modern individuals of known age (n = 26); (b) individuals from Belleville, Ontario, Canada (1821-1874) with documented age (n = 50); and (c) Belleville individuals with skeletally estimated age (n = 122)...
December 14, 2017: American Journal of Physical Anthropology
https://www.readbyqxmd.com/read/29234957/factors-affecting-the-outcomes-of-direct-pulp-capping-using-biodentine
#20
Mariusz Lipski, Alicja Nowicka, Katarzyna Kot, Lidia Postek-Stefańska, Iwona Wysoczańska-Jankowicz, Lech Borkowski, Paweł Andersz, Anna Jarząbek, Katarzyna Grocholewicz, Ewa Sobolewska, Krzysztof Woźniak, Agnieszka Droździk
INTRODUCTION: This study aimed to evaluate the prognostic value of factors with regard to the treatment outcome of direct pulp capping using Biodentine (Septodont, Saint-Maur-des-Fossés, France), in permanent teeth in which the pulps were exposed during caries removal. METHODS: Between 2010 and 2014, 112 teeth with deep carious lesions underwent direct pulp capping. The patients were followed up at 2-3 months and 1-1.5 years with a routine examination on both recall visits...
December 12, 2017: Clinical Oral Investigations
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