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https://www.readbyqxmd.com/read/28644107/gingival-perfusion-and-tissue-biomarkers-during-early-healing-of-post-extraction-regenerative-procedures-a-prospective-case-series
#1
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/28643923/micro-anatomical-responses-in-periodontal-complexes-of-mice-to-calibrated-orthodontic-forces-on-the-crown
#2
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
#3
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/28643913/effect-of-exogenous-retinoic-acid-on-tooth-movement-and-periodontium-healing-following-tooth-extraction-in-a-rat-model
#4
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/28643883/is-ridge-preservation-augmentation-at-periodontally-compromised-extraction-sockets-safe-a-retrospective-study
#5
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/28643222/ridge-preservation-using-an-in-situ-hardening-biphasic-calcium-phosphate-%C3%AE-tcp-ha-bone-graft-substitute-a-clinical-radiological-and-histological-study
#6
Ashish Kakar, Bappanadu H Sripathi Rao, Shashikanth Hegde, Nikhil Deshpande, Annette Lindner, Heiner Nagursky, Aditya Patney, Harsh Mahajan
BACKGROUND: Post-Extraction ridge preservation using bone graft substitutes is a conservative technique to maintain the width of the alveolar ridge. The objective of the present study was to evaluate an in situ hardening biphasic (HA/β-TCP) bone graft substitutes for ridge preservation without primary wound closure or a dental membrane. METHODS: A total of 15 patients reported for tooth extraction were enrolled in this study. Implants were placed in average 5.2 ± 2 months after socket grafting...
December 2017: International Journal of Implant Dentistry
https://www.readbyqxmd.com/read/28642555/chlorhexidine-mouthwash-plaque-levels-and-gingival-health
#7
Derek Richards
Data sourcesCochrane Oral Health's Trials Register; Cochrane Central Register of Controlled Trials (CENTRAL) Medline; clinicaltrials.gov and the World Health Organization International Clinical Trials Registry Platform. There were no language or date restrictions on searches.Study selectionRandomised controlled trials (RCTs) assessing the effects of chlorhexidine mouthrinse used as an adjunct to mechanical oral hygiene procedures for at least four weeks on gingivitis in children and adults.Data extraction and synthesisTwo reviewers independently abstracted data and assessed risk of bias...
June 23, 2017: Evidence-based Dentistry
https://www.readbyqxmd.com/read/28638547/push-out-bond-strength-of-different-endodontic-obturation-material-at-three-different-sites-in-vitro-study
#8
Pankaj Mishra, Anjna Sharma, Sunil Mishra, Manas Gupta
BACKGROUND: The key to success of any root canal therapy is adequate obturation of the prepared root canal space. Root canal sealers are not dimensionally stable and might dissolve partially over a period of time. The objective of this in vitro study is to evaluate the push-out bond strength to intraradicular dentin of two endodontic obturation materials. MATERIAL AND METHODS: Forty extracted single rooted permanent teeth were used. Canals orifice was explored, teeth were instrumented...
June 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/28637990/effect-of-the-leukotriene-receptor-antagonist-montelukast-on-orthodontic-tooth-movement
#9
Hossam Asaad, Rabab Al-Sabbagh, Darem Al-Tabba, Omar Kujan
Asthma is a chronic inflammatory disease, and its prevalence is relatively high among children. Optimal management of asthma often requires long-term pharmacotherapy; however, the effects of these medications on orthodontic treatment is uncertain. We evaluated the effects of the leukotriene LTD4 receptor antagonist montelukast on orthodontic tooth movement in an animal model. Eight mongrel dogs were given montelukast for periods up to 4 weeks. An orthodontic force of 150-200 g was applied to move the second and fourth premolars toward the site of the extracted third premolar...
2017: Journal of Oral Science
https://www.readbyqxmd.com/read/28626287/high-contrast-reflectance-imaging-of-composite-restorations-color-matched-to-tooth-structure-at-1000-2300-nm
#10
William A Fried, Jacob C Simon, Cynthia L Darling, Oanh Le, Daniel Fried
A major advantage of composite restoration materials is that they can be color matched to the tooth. However, this presents a challenge when composites fail and they need to be replaced. Dentists typically spend more time repairing and replacing composites than placing new restorations. We have shown in previous studies that high-contrast images of composite can be acquired in occlusal transmission mode at near-IR wavelengths coincident with higher water absorption. The purpose of this study was to determine if similar high-contrast images can be acquired in reflectance mode at longer wavelengths where water absorption is even higher...
January 28, 2017: Proceedings of SPIE
https://www.readbyqxmd.com/read/28626284/near-infrared-imaging-of-enamel-hypomineralization-due-to-developmental-defects
#11
Robert C Lee, Andrew Jang, Daniel Fried
The increasing prevalence of mild hypomineralization due to developmental defects on tooth surfaces poses a challenge for caries detection and caries risk assessment and reliable methods need to be developed to discriminate such lesions from active caries lesions that need intervention. Previous studies have demonstrated that areas of hypomineralization are typically covered with a relatively thick surface layer of highly mineralized and transparent enamel similar to arrested lesions. Seventy-six extracted human teeth with mild to moderate degrees of suspicious fluorosis were imaged using near-infrared reflectance and transillumination...
January 28, 2017: Proceedings of SPIE
https://www.readbyqxmd.com/read/28624073/predicting-extension-of-cracks-to-the-root-from-the-dimensions-in-the-crown-a-preliminary-in%C3%A2-vitro-study
#12
Min Chen, Kaiyu Fu, Feng Qiao, Xu Zhang, Yi Fan, Lijun Wang, Peng Li, Zhou Wu, Ligeng Wu
BACKGROUND: In this study, the authors investigated whether extension of a tooth crack into the root can be predicted by the appearance of the crack in the crown in vitro. METHODS: The authors obtained 22 cracked teeth from 22 patients who underwent extraction, and they scanned the teeth using microcomputed tomography. The length and width of the crack on the occlusal surface (LOS and WOS, respectively) and the length of the crack on the proximal surface (LCPS) were measured on 3-dimensional reconstruction images...
June 14, 2017: Journal of the American Dental Association
https://www.readbyqxmd.com/read/28623787/simultaneous-determination-of-btex-and-their-metabolites-using-solid-phase-microextraction-followed-by-hplc-or-gc-ms-an-application-in-teeth-as-environmental-biomarkers
#13
Johannes L González, Albert Pell, Montserrat López-Mesas, Manuel Valiente
Applications of benzene, toluene, ethylbenzene, and o-, m-, and p-xylenes (BTEX) release them into the environment exposing living organism. These endocrine disruptors are toxic, highly volatile and easily absorbed by the lungs and can cause adverse consequences for the human health as neurological diseases and cancer. A method for the analysis of BTEX and its metabolites (phenols and aromatic acids) in teeth is presented. The method consists in a one-step simple extraction procedure from spiked tooth using NaOH solution followed by SPME-HPLC or HS-SPME-GC/MS determination...
June 14, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28621833/multiple-external-cervical-root-resorptions-after-home-bleaching-treatment-with-22-carbamide-peroxide
#14
Glauco Rodrigues Velloso, Marcos Motta de Freitas, Adriana Terezinha Neves Novellino Alves, Alan Roger Santos Silva, Eliane Dos Santos Porto Barboza, Vittorio Moraschini
Invasive multiple cervical root resorptions after vital tooth bleaching is a rare condition. The aim of this article is to present a case of multiple external cervical root resorptions (ECRR) after a misguided home whitening treatment. A 34-year-old male patient presented with slight sensitivity and mobility in several teeth. Despite the manufacturer's recommendations, the patient used a 22% carbamide peroxide-based tooth bleaching gel at home for 4 consecutive days, at night, on the upper and lower arches...
June 16, 2017: Australian Dental Journal
https://www.readbyqxmd.com/read/28618434/alveolar-ridge-augmentation-using-dystopic-autogenous-tooth-2-year-results-of-an-open-prospective-study
#15
Veronika Pohl, Sebastian Pohl, Irene Sulzbacher, Rudolf Fuerhauser, Georg Mailath-Pokorny, Robert Haas
PURPOSE: To evaluate the use of chemically unchanged tooth material in lateral alveolar ridge augmentation or for the filling of jaw defects. MATERIALS AND METHODS: A total of 20 patients underwent either lateral augmentation of the alveolar process (11 patients) or filling of jaw defects (6 patients) with autogenous unaltered tooth material in a longitudinal 2-year study. In three patients, the jaw defect was so marked that a bone block graft had to be used for augmentation in addition to particulate dental material...
June 14, 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/28617402/-retrospective-study-on-treatment-results-of-patients-with-bone-destruction-in-lower-molars-roots-area
#16
V A Semkin, Z M Izmailova, P A Koloticov
The paper presents retrospective study on the efficiency of tooth protecting operations in patients with odontogenic bone destruction in lower molars roots area. The study was based on the analysis of medical records of patients treated in Central Research Institute of Dentistry and Maxillofacial Surgery from 2011 to 2016. Tooth protecting procedures because of bone destruction in lower molars were carried out in 98 patients but only 59 of them were accessible to proper follow-up. Complications were seen in 15...
2017: Stomatologii︠a︡
https://www.readbyqxmd.com/read/28617398/-ultrastructural-changes-of-human-dental-hard-tissues-during-orthodontic-treatment-with-fixed-appliances
#17
I N Antonova, V D Goncharov, E A Bobrova
The aim of the study was to evaluate ultrastructural changes of dental enamel after fixation of orthodontic appliances, initial influence of orthodontic forces and removal of braces. Five intact permanent tooth extracted for orthodontic reasons were included in the experimental study. Scanning probe microscopy was conducted in 4 random enamel points in each tooth (20 points overall) in semi-contact mode with standard 10 nm probes. The study showed ultrastructural enamel changes such as nanofractures up to 1 mm along the braces locks...
2017: Stomatologii︠a︡
https://www.readbyqxmd.com/read/28613059/-experimental-study-of-transforming-growth-factor-%C3%AE-3-combined-with-dental-pulp-stem-cells-in-promoting-the-implant-s-osseointegration
#18
T Wang, Huojia Muhetaer, J Li
Objective: To investigate the effect of transforming growth factor-β3 (TGF-β3) and dental pulp stem cells (DPSC) in promoting the implant's osteointegration. Methods: Thirty-three New Zealand white rabbits were randomly divided into phosphate buffer saline (PBS) group, DPSC group and TGF-β3 + DPSC group (12 rabbits/group). Two teeth from the rabbits's mandibular incisors or molars were pulled out randomly, then implant were placed in the tooth extraction site immediately. In PBS group, the implant area was filled with Bio-Oss powder 0...
June 9, 2017: Zhonghua Kou Qiang Yi Xue za Zhi, Zhonghua Kouqiang Yixue Zazhi, Chinese Journal of Stomatology
https://www.readbyqxmd.com/read/28612428/outcomes-and-prognostic-factors-that-influence-the-success-of-tooth-autotransplantation-in-children-and-adolescents
#19
Vasiliki Kafourou, Huei Jinn Tong, Peter Day, Nadine Houghton, R James Spencer, Monty Duggal
BACKGROUND/AIM: Tooth autotransplantation has been advocated for replacement of missing teeth, or teeth that are unsuitable for restoration. The aim of this study was to investigate the outcomes and prognostic factors that influenced the success of tooth transplantation in a paediatric population. MATERIALS AND METHODS: Data was extracted from the records of 75 patients (89 teeth). Demographic and prognostic factors were recorded and analyzed for the clinical and radiographic outcomes for periodontal ligament (PDL) and pulp healing of transplanted teeth...
June 14, 2017: Dental Traumatology: Official Publication of International Association for Dental Traumatology
https://www.readbyqxmd.com/read/28606831/relationship-between-dental-status-and-development-of-osteoradionecrosis-of-the-jaw-a-multicenter-retrospective-study
#20
Yuka Kojima, Souichi Yanamoto, Masahiro Umeda, Yumiko Kawashita, Izumi Saito, Takumi Hasegawa, Takahide Komori, Nobuhiro Ueda, Tadaaki Kirita, Shin-Ichi Yamada, Hiroshi Kurita, Yasuko Senga, Yasuyuki Shibuya, Hiroshi Iwai
OBJECTIVE: Osteoradionecrosis of the jaw is a serious late adverse event in patients with head and neck cancer undergoing radiotherapy. The aim of this study is to investigate the relationship between dental status and development of osteoradionecrosis. STUDY DESIGN: Multicenter, retrospective observational study. A total of 392 patients with head and neck cancer who underwent radiotherapy were investigated for correlations between the development of osteoradionecrosis and various factors...
May 4, 2017: Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology
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