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https://www.readbyqxmd.com/read/28647773/cthrc1-promotes-osteogenic-differentiation-of-periodontal-ligament-stem-cells-by-regulating-taz
#1
Chengze Wang, Weiting Gu, Baiyu Sun, Yunpeng Zhang, Yawen Ji, Xin Xu, Yong Wen
Collagen triple helix repeat containing 1 (CTHRC1) is associated with bone metabolism. Alveolar bone has an ability to rapidly remodel itself to adapt its biomechanical environment and function. However, whether CTHRC1 is expressed in alveolar bone tissue and the role of CTHRC1 in alveolar bone remodeling remain unclear. We used orthodontic tooth movement (OTM) rat model to study the effects of CHTRC1 in alveolar bone remodeling in vivo. We found that CTHRC1 was expressed in normal physiological condition of osteocytes, bone matrix, and periodontal ligament cells in rat...
June 24, 2017: Journal of Molecular Histology
https://www.readbyqxmd.com/read/28647157/veneered-zirconia-inlay-retained-fixed-dental-prostheses-10-year-results-from-a-prospective-clinical-study
#2
Friederike Rathmann, Wolfgang Bömicke, Peter Rammelsberg, Brigitte Ohlmann
OBJECTIVE: The purpose of this study was to evaluate the 10-year clinical performance of zirconia-based inlay-retained fixed dental prostheses (IRFDP). METHODS: For replacement of a molar in 27 patients, 30 IRFDP were luted by use of different cements, Panavia F (Kuraray Europe GmbH) or Multilink Automix (Ivoclar Vivadent GmbH), with use of inlay/inlay, inlay/full-crown, or inlay/partial-crown retainers for anchorage. Frameworks were milled from yttria-stabilized zirconia (IPS e...
June 21, 2017: Journal of Dentistry
https://www.readbyqxmd.com/read/28646819/invisalign-with-photobiomodulation-optimizing-tooth-movement-and-treatment-efficacy-with-a-novel-self-assessment-algorithm
#3
Todd E Dickerson
No abstract text is available yet for this article.
March 2017: Journal of Clinical Orthodontics: JCO
https://www.readbyqxmd.com/read/28645670/fracture-resistance-of-cad-cam-monolithic-ceramic-and-veneered-zirconia-molar-crowns-after-aging-in-a-mastication-simulator
#4
Merve Bankoğlu Güngör, Secil Karakoca Nemli
STATEMENT OF PROBLEM: The demand for ceramic restorations has increased over the past years, and now various machinable materials can be used for chairside computer-aided design and computer aided manufacturing (CAD-CAM) systems. Limited studies of these new materials make it difficult to evaluate their mechanical performance, advantages, and limitations. PURPOSE: The purpose of this in vitro study was to investigate the fracture resistance of CAD-CAM monolithic ceramic and veneered zirconia molar crowns after thermomechanical aging...
June 20, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/28645356/-endocrine-control-of-serum-phosphate-from-the-discoveries-of-phosphatonins-to-novel-therapies
#5
A Linglart, C Chaussain
Phosphate is absorbed through the gut, stored in the bone and reabsorbed through the proximal renal tubule. More importantly, PTH and FGF23 have been identified as the main phosphaturic factors that control the expression of the phosphate co-transporters NaPi-IIa et IIc. By allowing the adjustment of the urinary phosphate reabsorption, these two phosphatonins play a major role in bone and tooth mineralization and growth. Recently, novel therapies have successfully targeted the FGF23 signaling pathway to treat the hypophosphatemia in patients affected with molecular defects of this pathway (mutations in the PHEX gene)...
October 2016: Annales D'endocrinologie
https://www.readbyqxmd.com/read/28645095/tooth-coronal-index-and-pulp-tooth-ratio-in-dental-age-estimation-on-digital-panoramic-radiographs-a-comparative-study
#6
Supreet Jain, Ravleen Nagi, Minal Daga, Ashutosh Shandilya, Aastha Shukla, Abhinav Parakh, Afshan Laheji, Rahul Singh
BACKGROUND: Assessment of an age of an individual whether living or dead through teeth is one of the most reliable and simple method to calculate age than skeletal remains especially when they are in poor conditions. OBJECTIVES: The study was carried out with aim of (i) to evaluate reliability of dental age assessment through two different methods for adults i.e. tooth coronal index and pulp/tooth ratio using digital panoramic radiographs and (ii) to compare these methods for their accuracy in age determination...
May 12, 2017: Forensic Science International
https://www.readbyqxmd.com/read/28644741/ras-signaling-regulates-stem-cells-and-amelogenesis-in-the-mouse-incisor
#7
X Zheng, A F Goodwin, H Tian, A H Jheon, O D Klein
The role of Ras signaling during tooth development is poorly understood. Ras proteins-which are activated by many upstream pathways, including receptor tyrosine kinase cascades-signal through multiple effectors, such as the mitogen-activated protein kinase (MAPK) and PI3K pathways. Here, we utilized the mouse incisor as a model to study how the MAPK and PI3K pathways regulate dental epithelial stem cells and amelogenesis. The rodent incisor-which grows continuously throughout the life of the animal due to the presence of epithelial and mesenchymal stem cells-provides a model for the study of ectodermal organ renewal and regeneration...
June 1, 2017: Journal of Dental Research
https://www.readbyqxmd.com/read/28644527/an-audit-on-technical-quality-of-root-fillings-performed-by-undergraduate-students
#8
W Fong, O Heidarifar, S Killough, M Lappin, I A El Karim
AIM: To evaluate radiographically the technical quality of root fillings performed by undergraduate dental students and to assess whether students were exposed to an appropriate endodontic case mix during their clinical training. METHODOLOGY: A retrospective audit was undertaken evaluating the clinical records of patients who underwent endodontic procedures during the period from September 2015 to June 2016 in the Dental School at Queen's University Belfast, UK...
June 23, 2017: International Endodontic Journal
https://www.readbyqxmd.com/read/28644107/gingival-perfusion-and-tissue-biomarkers-during-early-healing-of-post-extraction-regenerative-procedures-a-prospective-case-series
#9
Lamees Alssum, Timothy D Eubank, Sashwati Roy, Barbaros S Erdal, Vedat O Yildiz, Dimitris N Tatakis, Binnaz Leblebicioglu
BACKGROUND: Post-extraction alveolar bone loss, mostly affecting the buccal plate, occurs despite regenerative procedures. To better understand possible determinants, this prospective case series assessed gingival blood perfusion and tissue molecular responses in relation to post-extraction regenerative outcomes. METHODS: Adults scheduled to receive bone grafting in maxillary, non-molar, single tooth extraction site were recruited. Clinical documentation included probing pocket depth (PD), keratinized tissue width (KT), tissue biotype (TB), plaque (P) and bleeding...
June 23, 2017: Journal of Periodontology
https://www.readbyqxmd.com/read/28643930/moving-towards-precision-orthodontics-an-evolving-paradigm-shift-in-the-planning-and-delivery-of-customized-orthodontic-therapy
#10
REVIEW
A H Jheon, S Oberoi, R C Solem, S Kapila
Advances in precision medicine portend similar progress in orthodontics and will be increasingly harnessed to achieve customized treatment approaches and enhance treatment efficiencies. Our goal is to provide a background on emerging advances in computer technologies and biomedicine and highlight their current and likely future applications to precision orthodontics. A review of orthodontically relevant technologies and advances in pertinent biological research was undertaken. Innovations in computer hardware and software, and 3D imaging technologies offer the ability for customized treatment and biomechanical planning that will be more fully realized within the next few decades...
June 2017: Orthodontics & Craniofacial Research
https://www.readbyqxmd.com/read/28643927/co2-low-level-laser-therapy-has-an-early-but-not-delayed-pain-effect-during-experimental-tooth-movement
#11
T Deguchi, D G Kim, H Kamioka
OBJECTIVES: To test the hypothesis that the use of low-level laser therapy (LLLT) reduces elevated pain by controlling the release of neurochemicals during orthodontic tooth movement. SETTING AND SAMPLE POPULATION: Department of Orthodontics and Dentofacial Orthopedics, Okayama University. Sixty-five Sprague Dawley rats were subjected to tooth movement and LLLT. MATERIALS AND METHODS: Adult Sprague Dawley rats were used in this study. Groups included day 0 controls, irradiation only controls and with or without irradiation sacrificed at 1, 3, 5, 7 and 14 days after tooth movement (n=5 each, total n=65)...
June 2017: Orthodontics & Craniofacial Research
https://www.readbyqxmd.com/read/28643925/a-new-cyte-in-orthodontics-osteocytes-in-tooth-movement
#12
REVIEW
E E Bumann, S A Frazier-Bowers
Orthodontic tooth movement (OTM) relies on the orchestration of clinical and biologic events that include the application of clinical force followed by a cascade of cellular and molecular responses. Our understanding about OTM today has evolved from, and is largely based on historic studies. However, the advances in bone biology and clinical orthodontics today continue to pave the pathway towards an improved knowledge base, and state of the art therapeutics in OTM. Osteoblasts and osteoclasts have been the primary cells analyzed in OTM...
June 2017: Orthodontics & Craniofacial Research
https://www.readbyqxmd.com/read/28643923/micro-anatomical-responses-in-periodontal-complexes-of-mice-to-calibrated-orthodontic-forces-on-the-crown
#13
A Pal, L Chen, L Yang, F Yang, B Meng, A H Jheon, S P Ho
OBJECTIVE: Correlating mechanical forces with quantifiable physical changes in the dentoalveolar complex. SETTING AND SAMPLE POPULATION: Male 6-week C57BL/6 mice (N=3), micro X-ray-computed tomography; post-analysis software to extract physical changes in periodontal ligament (PDL)-space. MATERIALS AND METHODS: Silicone-elastic bands were placed between maxillary molars for 1 week, with the contralateral side as internal control. Average displacements between crowns and roots, and changes in PDL-spaces were evaluated by registering X-ray tomograms of experimental and control hemi-maxillae...
June 2017: Orthodontics & Craniofacial Research
https://www.readbyqxmd.com/read/28643922/speed-of-human-tooth-movement-in-growers-and-non-growers-selection-of-applied-stress-matters
#14
L R Iwasaki, Y Liu, H Liu, J C Nickel
OBJECTIVES: To test that the speed of tooth translation is not affected by stress magnitude and growth status. SETTING AND SAMPLE POPULATION: Advanced Education Orthodontic clinics at the Universities of Nebraska Medical Center and Missouri-Kansas City. Forty-six consenting subjects with orthodontic treatment plans involving maxillary first premolar extractions. MATERIALS AND METHODS: This randomized split-mouth study used segmental mechanics with definitive posterior anchorage and individual vertical-loop maxillary canine retraction appliances and measured three-dimensional tooth movements...
June 2017: Orthodontics & Craniofacial Research
https://www.readbyqxmd.com/read/28643918/effect-of-cyclical-forces-on-orthodontic-tooth-movement-from%C3%A2-animals-to-humans
#15
REVIEW
F Uribe, E Dutra, T Chandhoke
Vibration as a non-invasive method is currently available for clinical use with the potential to accelerate the rate of tooth movement in orthodontics. The aim of this review was to evaluate the basic science and clinical literature on the effects of vibration on the axial and appendicular skeleton including the craniofacial bone. Vibration as a dynamic load consisting of high oscillatory forces of low magnitude has shown osteogenic and anti-catabolic effects on bone. These effects have been observed in the craniofacial skeleton including the alveolar bone as increases in sutural width and alveolar bone formation...
June 2017: Orthodontics & Craniofacial Research
https://www.readbyqxmd.com/read/28643913/effect-of-exogenous-retinoic-acid-on-tooth-movement-and-periodontium-healing-following-tooth-extraction-in-a-rat-model
#16
C Nishio, P Rompré, F Moldovan
OBJECTIVES: To evaluate the effect of isotretinoin on orthodontic tooth movement (OTM) and wound healing following exodontia. SETTING AND SAMPLE POPULATION: Sixteen 40-day-old male Wistar rats were divided into two groups: (a) OTM and (b) tooth extraction (TE) of the upper 1st molar and OTM. The experimental animals were treated with isotretinoin (7.5 mg/kg) and the control animals with oil solution for 37 days. MATERIALS AND METHODS: The OTM and bone volume were evaluated by the micro-CT and the periodontium healing was assessed by immunohistochemistry for VEGF-C, COX-2 and IL-1ß...
June 2017: Orthodontics & Craniofacial Research
https://www.readbyqxmd.com/read/28643909/the-fate-of-osterix-expressing-mesenchymal-cells-in-dental-root-formation-and-maintenance
#17
A Takahashi, N Ono, W Ono
OBJECTIVES: Osterix (Osx)-expressing mesenchymal cells are progenitors for tooth root forming cells. The aim of this study was to reveal the fates of Osx-expressing cells during and after root formation using a lineage tracing experiment. MATERIAL AND METHODS: To reveal the fates of Osx-expressing dental mesenchymal progenitors, we took advantage of tamoxifen-inducible Cre reporter system. Osx-creER; R26R-tdTomato mice received tamoxifen (0.1 mg/body) at postnatal day 3 (P3)...
June 2017: Orthodontics & Craniofacial Research
https://www.readbyqxmd.com/read/28643903/resolving-differences-between-animal-models-for-expedited-orthodontic-tooth-movement
#18
A Y Ibrahim, S Gudhimella, S N Pandruvada, S S Huja
OBJECTIVE: To highlight differences in commonly used animal models of orthodontic tooth movement (OTM). METHODS: Narrative review. RESULTS: A critical review of the literature on animal models has become increasingly important in the last decade as methods to increase the rate of tooth movement have been intensely sought. We provide a review focusing on the rodent and canine models for expedited OTM and describe the challenges in extrapolation of the results to the clinical practice of orthodontics...
June 2017: Orthodontics & Craniofacial Research
https://www.readbyqxmd.com/read/28643883/is-ridge-preservation-augmentation-at-periodontally-compromised-extraction-sockets-safe-a-retrospective-study
#19
Jung-Ju Kim, Heithem Ben Amara, Frank Schwarz, Hae-Young Kim, Jung-Won Lee, Ulf Me Wikesjö, Ki-Tae Koo
OBJECTIVES: This study aimed to evaluate the safety of ridge preservation/augmentation procedures when performed at compromised extraction sockets. METHODS: Patients subject to ridge preservation/augmentation at periodontally compromised sockets at Seoul National University Dental Hospital(SNUDH) were evaluated in a chart review. Tooth extractions due to acute infection were not included in our study as chronically formed lesions are the only lesions that can be detected from radiographic images...
June 23, 2017: Journal of Clinical Periodontology
https://www.readbyqxmd.com/read/28643542/long-term-stability-of-splinted-anterior-mandibular-teeth-during-supportive-periodontal-therapy
#20
Sarah K Sonnenschein, Carlota Betzler, Maurice A Rütters, Johannes Krisam, Daniel Saure, Ti-Sun Kim
OBJECTIVE: The aim of the study was to retrospectively assess the survival rate and stability of periodontally compromised and mobile anterior mandibular teeth after splinting in patients under supportive periodontal therapy (SPT). MATERIALS AND METHODS: Thirty-nine patients with splinted anterior mandibular teeth and SPT (≥1 visit/year) for 3-15 years were re-examined. Periodontal status, patient and tooth-related factors were assessed retrospectively before (baseline) and 3 years after splinting (n = 39 patients, 162 splinted teeth)...
June 23, 2017: Acta Odontologica Scandinavica
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