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https://www.readbyqxmd.com/read/28829993/effect-of-different-dental-burs-for-experimental-induction-of-pulpitis-in-mice
#1
Xilin Shi, Zhengmao Li, Ying He, Qianzhou Jiang, Xuechao Yang
OBJECTIVE: To evaluate the effect of using different dental burs on the development of pulpal inflammation after pulpal exposure in mice. DESIGN: Eighty-eight C57BL/6 mice were randomly assigned to group A (n=40), group B (n=40) and control group (n=8). The pulps of the maxillary first molars were occlusally exposed using ¼ round burs and polishing burs in group A and B respectively. Animals were sacrificed randomly at 0h, 4h, 8h, 12h and 24h after pulpal exposure...
August 11, 2017: Archives of Oral Biology
https://www.readbyqxmd.com/read/28829930/sudden-onset-of-subcutaneous-air-emphysema-after-the-application-of-air-to-a-maxillary-premolar-located-in-a-nonsurgical-field
#2
E A Van Tubergen, D Tindle, G M Fox
Although rare, subcutaneous air emphysema can occur during dental procedures such as endodontic treatment, surgical extractions, and preparing a tooth for an indirect or direct dental restoration. We report the development of a subcutaneous air emphysema that was introduced through the periodontal ligament of an untreated premolar after the use of an air syringe to dry the tooth.
September 2017: Operative Dentistry
https://www.readbyqxmd.com/read/28828758/open-versus-closed-surgical-exposure-of-canine-teeth-that-are-displaced-in-the-roof-of-the-mouth
#3
REVIEW
Nicola Parkin, Philip E Benson, Bikram Thind, Anwar Shah, Ismail Khalil, Saiba Ghafoor
BACKGROUND: Palatally displaced canines or PDCs are upper permanent canines, commonly known as 'eye' teeth, that are displaced in the roof of the mouth. This can leave unsightly gaps, cause damage to the surrounding roots (which can be so severe that neighbouring teeth are lost or have to be removed) and, occasionally, result in the development of cysts. PDCs are a frequent dental anomaly, present in 2% to 3% of young people.Management of this problem is both time consuming and expensive...
August 21, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28828189/restorative-rehabilitation-of-a-patient-with-dental-erosion
#4
Mohammed Thamer AlShahrani, Satheesh B Haralur, Mohammed Alqarni
Dental erosion is the chemical dissolution of the tooth structure. Factors like eating disorders and gastrointestinal diseases are recognized as intrinsic factors for dental erosion. Advanced stages of dental erosion extensively damage the tooth morphology, consequently affecting both esthetics and functions. Reports indicate the growing prevalence of erosion, and hence knowledge of restorative rehabilitation of tooth erosion is an integral part of the contemporary dental practice. This clinical report describes an adult patient with gastroesophageal reflux induced dental erosion involving the palatal surface of the maxillary anterior teeth...
2017: Case Reports in Dentistry
https://www.readbyqxmd.com/read/28826714/internal-maxillary-artery-to-upper-posterior-circulation-bypass-using-a-superficial-temporal-artery-graft-surgical-anatomy-and-feasibility-assessment
#5
Ali Tayebi Meybodi, Michael T Lawton, Roberto Rodriguez Rubio, Sonia Yousef, Xiaoming Guo, Xuequan Feng, Arnau Benet
BACKGROUND: Revascularization of the upper posterior circulation (UPC), including the superior cerebellar [SCA] and posterior cerebral arteries [PCA], may be necessary as part of the surgical treatment of complex UPC aneurysms or vertebrobasilar insufficiency. The existing bypass options have relative advantages and disadvantages. However, the use of a superficial temporal artery graft (STAg) in a bypass from the internal maxillary artery (IMA) to the UPC has not been previously assessed...
August 4, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28826586/16s-rrna-gene-sequencing-reveals-site-specific-signatures-of-the-upper-and-lower-airways-of-cystic-fibrosis-patients
#6
Sarah K Lucas, Robert Yang, Jordan M Dunitz, Holly C Boyer, Ryan C Hunter
BACKGROUND: Metastasis of upper airway microbiota may have significant implications in the development of chronic lung disease. Here, we compare bacterial communities of matched sinus and lung mucus samples from cystic fibrosis (CF) subjects undergoing endoscopic surgery for treatment of chronic sinusitis. METHODS: Mucus from one maxillary sinus and expectorated sputum were collected from twelve patients. 16S rRNA gene sequencing was then performed on sample pairs to compare the structure and function of CF airway microbiota...
August 18, 2017: Journal of Cystic Fibrosis: Official Journal of the European Cystic Fibrosis Society
https://www.readbyqxmd.com/read/28823003/anatomical-study-of-the-palatine-aponeurosis-application-to-posterior-palatal-seal-of-the-complete-maxillary-denture
#7
Joe Iwanaga, Junta Kido, Marcin Lipski, Iwona M Tomaszewska, Krzysztof A Tomaszewski, Jerzy A Walocha, Rod J Oskouian, R Shane Tubbs
The palatine aponeurosis is a thin, fibrous lamella comprising the extended tendons of the tensor veli palatini muscles, attached to the posterior border and inferior surface of the palatine bone. In dentistry, the relationship between the "vibrating line" and the border of the hard and soft palate has long been discussed. However, to our knowledge, there has been no discussion of the relationship between the palatine aponeurosis and the vibrating line(s). Twenty sides from ten fresh frozen White cadaveric heads (seven males and three females) whose mean age at death was 79 years) were used in this study...
August 19, 2017: Surgical and Radiologic Anatomy: SRA
https://www.readbyqxmd.com/read/28822866/profiles-of-soluble-proteins-in-chemosensory-organs-of-three-members-of-the-afro-tropical-anopheles-gambiae-complex
#8
Immacolata Iovinella, Beniamino Caputo, Maria Calzetta, Laurence J Zwiebel, Francesca Romana Dani, Alessandra Della Torre
In female mosquitoes, host-seeking and preference as well as several other important behaviors are largely driven by olfaction. Species of the Afrotropical Anopheles gambiae complex display divergent host-preference that are associated with significant differences in their vectorial capacity for human malaria. Olfactory sensitivity begins with signal transduction and activation of peripheral sensory neurons that populate the antennae, maxillary palps and other appendages. We have used shotgun proteomics to characterize the profile of soluble proteins of antennae and maxillary palps of three different species: An...
August 2, 2017: Comparative Biochemistry and Physiology. Part D, Genomics & Proteomics
https://www.readbyqxmd.com/read/28822566/human-pulp-responses-to-partial-pulpotomy-treatment-with-theracal-as-compared-with-biodentine-and-proroot-mta-a-clinical-trial
#9
Hengameh Bakhtiar, Mohammad Hossein Nekoofar, Pouyan Aminishakib, Fatemeh Abedi, Fereshteh Naghi Moosavi, Ehsan Esnaashari, Arash Azizi, Samar Esmailian, Mohammad Reza Ellini, Vahid Mesgarzadeh, Mehdi Sezavar, Imad About
INTRODUCTION: Questions exist regarding the efficacy of resin-containing materials such as TheraCal directly applied on the pulp. This study sought to investigate the clinical efficacy of TheraCal as compared with Biodentine and ProRoot mineral trioxide aggregate (MTA) for partial pulpotomy. METHODS: In this clinical trial, partial pulpotomy was performed for 27 sound human maxillary and mandibular third molars scheduled for extraction. The teeth were randomly divided into 3 groups (n = 9) and underwent partial pulpotomy with TheraCal, Biodentine, and ProRoot MTA...
August 16, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/28821290/comparing-the-effect-of-0-06-0-12-and-0-2-chlorhexidine-on-plaque-bleeding-and-side-effects-in-an-experimental-gingivitis-model-a-parallel-group-double-masked-randomized-clinical-trial
#10
Maliha Haydari, Ayse Gul Bardakci, Odd Carsten Koldsland, Anne Merete Aass, Leiv Sandvik, Hans R Preus
BACKGROUND: Chlorhexidine is the gold standard of dental plaque prevention. The aim of the present study was to compare the plaque and gingivitis inhibiting effect of commercial products containing 0.2%, 0.12% and 0.06% chlorhexidine in a modified experimental gingivitis model. METHODS: In three groups of healthy volunteers, experimental gingivitis was induced and monitored over 21 days and simultaneously treated with the commercial solutions containing 0.2%, 0...
August 18, 2017: BMC Oral Health
https://www.readbyqxmd.com/read/28820843/cephalometric-predictors-of-clinical-severity-in-treacher-collins-syndrome
#11
Elcin Esenlik, Natalie M Plana, Barry H Grayson, Roberto L Flores
BACKGROUND: The aim of this study is to identify cephalometric measurements associated with clinical severity in patients with Treacher Collins Syndrome (TCS). METHODS: A retrospective single-institutional review of patients with TCS was conducted. Pre-operative cephalograms and computed tomography scans (n=30) were evaluated. 50 cephalometric measurements were compared to age-specific normative data using ANOVA. These cephalometric measurements and the patient's Pruzansky classification were correlated to clinical severity using Spearman analysis...
August 8, 2017: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28820838/five-year-follow-up-of-midface-distraction-in-growing-children-with-syndromic-craniosynostosis
#12
Parit A Patel, Pradip Shetye, Stephen M Warren, Barry H Grayson, Joseph G McCarthy
BACKGROUND: Maxillary position in patients with syndromic craniosynostosis after midface distraction has been shown to be stable 1 year postoperatively. The purpose of this study is to assess midfacial position in the growing child with craniosynostosis 5 years after Le Fort III advancement with a rigid external device (RED). METHODS: Seventeen consecutive patients were identified to have the diagnosis of syndromic craniosynostosis and who underwent midface advancement...
August 8, 2017: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28820172/timing-of-surgery-in-traumatic-globe-dislocation
#13
Md Shahid Alam, Olma Veena Noronha, Bipasha Mukherjee
Traumatic globe dislocation into the maxillary sinus is a rare event and usually associated with a poor visual outcome if not managed appropriately. We report a 45-year-old female patient who presented to the emergency after blunt injury to her face with a door. Initial evaluation revealed nil perception of light and an apparently anophthalmic socket. Neuroimaging revealed large floor and medial wall fracture with dislocation of the globe into the maxillary sinus. The patient underwent exploration with repositioning of the globe and fracture repair...
August 2017: Indian Journal of Ophthalmology
https://www.readbyqxmd.com/read/28818171/rapid-and-promising-technique-to-treat-gummy-smile-lip-repositioning
#14
Muhammad Nazeer Khan, Zainab Akbar, Irfan Shah
Beautiful smile is a booster to person's confidence. Gummy smile is a term used for excessive gingival display (EGD). Its etiology is multifactorial. Bone vertical maxillary excess (VME) is one of the cause of EGD. In this case series, lip repositioning was performed to treat mild to moderate degree of gingival display ( 2 to 8 mm) due to VME. Lip repositioning is simple, promising, meticulous and comparatively cheap alternative technique for treating gummy smile.
July 2017: Journal of the College of Physicians and Surgeons—Pakistan: JCPSP
https://www.readbyqxmd.com/read/28817742/minimum-abutment-height-to-eliminate-bone-loss-influence-of-implant-neck-design-and-platform-switching
#15
Sergio Spinato, Pablo Galindo-Moreno, Fabio Bernardello, Davide Zaffe
PURPOSE: This retrospective study quantitatively analyzed the minimum prosthetic abutment height to eliminate bone loss after 4.7-mm-diameter implant placement in maxillary bone and how grafting techniques can affect the marginal bone loss in implants placed in maxillary areas. MATERIALS AND METHODS: Two different implant types with a similar neck design were singularly placed in two groups of patients: the test group, with platform-switched implants, and the control group, with conventional (non-platform-switched) implants...
August 17, 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/28817739/three-dimensional-volumetric-changes-in-severely-resorbed-alveolar-sockets-after-ridge-augmentation-with-bovine-derived-xenograft-and-resorbable-barrier-a-preliminary-study-on-cbct-imaging
#16
Valeria Manavella, Federica Romano, Lisa Corano, Cristina Bignardi, Mario Aimetti
PURPOSE: The primary aim of the study was to describe a novel technique to evaluate volumetric hard tissue dimensional changes after ridge augmentation procedures. The secondary aim was to apply this newly developed measuring method to compromised alveolar sockets grafted with a slowly resorbing biomaterial covered with a collagen membrane. MATERIALS AND METHODS: Eleven patients (6 men and 5 women, mean age 52.7 ± 8.3 years) requiring extraction of one hopeless tooth for severe periodontitis in the maxillary anterior area were consecutively treated with a ridge augmentation procedure...
August 17, 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/28817360/closing-the-gap-mouse-models-to-study-adhesion-in-secondary-palatogenesis
#17
K J Lough, K M Byrd, D C Spitzer, S E Williams
Secondary palatogenesis occurs when the bilateral palatal shelves (PS), arising from maxillary prominences, fuse at the midline, forming the hard and soft palate. This embryonic phenomenon involves a complex array of morphogenetic events that require coordinated proliferation, apoptosis, migration, and adhesion in the PS epithelia and underlying mesenchyme. When the delicate process of craniofacial morphogenesis is disrupted, the result is orofacial clefting, including cleft lip and cleft palate (CL/P). Through human genetic and animal studies, there are now hundreds of known genetic alternations associated with orofacial clefts; so, it is not surprising that CL/P is among the most common of all birth defects...
August 1, 2017: Journal of Dental Research
https://www.readbyqxmd.com/read/28817352/arhgap29-mutation-is-associated-with-abnormal-oral-epithelial-adhesions
#18
B J Paul, K Palmer, J C Sharp, C H Pratt, S A Murray, M Dunnwald
Nonsyndromic cleft lip and/or palate (NSCL/P) is a prevalent birth defect of complex etiology. Previous studies identified mutations in ARHGAP29 associated with an increased risk for NSCL/P. To investigate the effects of ARHGAP29 in vivo, we generated a novel murine allele by inserting a point mutation identified in a patient with NSCL/P. This single-nucleotide variation of ARHGAP29 translates to an early nonsense mutation (K326X), presumably resulting in loss-of-function (LoF). Embryos from Arhgap29(K326X/+) intercrosses were harvested at various time points...
August 1, 2017: Journal of Dental Research
https://www.readbyqxmd.com/read/28817142/morphologic-patterns-of-the-atrophic-posterior-maxilla-and-clinical-implications-for-bone-regenerative-therapy
#19
Alberto Monje, Istvan A Urban, Richard J Miron, Jordi Caballe-Serrano, Daniel Buser, Hom-Lay Wang
Regenerative therapies are commonly needed prior to implant placement in the posterior maxilla following tooth extraction. The aim of this study was to investigate the anatomical features of the atrophic posterior maxilla that might affect surgical approach selection and technique and risk of intra- and postoperative complications. Cone beam computed tomography files were screened to identify pristine atrophic maxillary ridges in need of bone augmentation (ridge height < 10 mm). Ridge height and width and lateral wall thickness (LWT) were measured at different levels, and palatonasal recess and lateral wall morphology were calculated...
September 2017: International Journal of Periodontics & Restorative Dentistry
https://www.readbyqxmd.com/read/28817132/plasma-of-argon-cleaning-treatment-on-implant-abutments-in-periodontally-healthy-patients-six-years-postloading-results-of-a-randomized-controlled-trial
#20
Luigi Canullo, Marco Tallarico, Miguel Penarrocha, Giuseppe Corrente, Joseph Fiorellini, David Penarrocha
The aim of this randomized, match-paired, triple-blinded, controlled clinical trial was to assess the 6-year radiographic changes around customized platform-switched abutments placed according to the one abutment-one time concept, with and without plasma of argon cleaning treatment. A total of 20 periodontally healthy patients received one maxillary implant between the premolars. Immediately before stage 2 surgery and abutment connection, patients were randomly assigned to the control (cleaning protocol by steam) or test group (plasma of argon treatment)...
September 2017: International Journal of Periodontics & Restorative Dentistry
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