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https://www.readbyqxmd.com/read/28535642/-clinical-effects-of-dynesys-system-and-transfacet-decompression-through-wiltse-approach-in-the-treatment-of-lumbar-degenerative-diseases
#1
K Shang, M J Chen, D G Wang
Objective: To investigate the early clinical effects of Dynesys system and transfacet decompression by Wiltse approach in the treatment of lumbar degenerative diseases. Methods: From January 2010 to December 2013, 48 patients suffering from lumbar degenerative diseases were treated with Dynesys system in addition to transfacet decompression through Wiltse approach.There were 28 males and 20 females with age of (51.8±6.8). The preoperative diagnosis included lumbar spinal stenosis(10 cases); lumber intervertebral disc herniation (38 cases)...
May 23, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/28531170/potential-hominin-affinities-of-graecopithecus-from-the-late-miocene-of-europe
#2
Jochen Fuss, Nikolai Spassov, David R Begun, Madelaine Böhme
The split of our own clade from the Panini is undocumented in the fossil record. To fill this gap we investigated the dentognathic morphology of Graecopithecus freybergi from Pyrgos Vassilissis (Greece) and cf. Graecopithecus sp. from Azmaka (Bulgaria), using new μCT and 3D reconstructions of the two known specimens. Pyrgos Vassilissis and Azmaka are currently dated to the early Messinian at 7.175 Ma and 7.24 Ma. Mainly based on its external preservation and the previously vague dating, Graecopithecus is often referred to as nomen dubium...
2017: PloS One
https://www.readbyqxmd.com/read/28530469/rapid-bacterial-detection-during-endodontic-treatment
#3
D B Herzog, N A Hosny, S A Niazi, G Koller, R J Cook, F Foschi, T F Watson, F Mannocci, F Festy
Bacteria present in the root canal (RC) space following an RC treatment (RCT) can lead to persistent infections, resulting in treatment failure and the need for reintervention or extraction. Currently, there are no standardized methods in use to clinically detect bacterial presence within RC spaces. The use of paper point sampling and fluorescence staining was shown to be a rapid method, able to detect residual bacteria following treatment. The study demonstrated that Calcein acetoxymethyl (AM) proved to be a suitable dye for detecting vital bacteria within mature endodontic biofilms, with an improved sensitivity over colony-forming unit counting in a stressed biofilm model...
June 2017: Journal of Dental Research
https://www.readbyqxmd.com/read/28529149/autotransplantation-of-third-molars-with-platelet-rich-plasma-for-immediate-replacement-of-extracted-non-restorable-teeth-a-case-series
#4
Jorge Gonzalez-Ocasio, Mark Stevens
PURPOSE: The aim of this study was to examine the use of platelet-rich plasma (PRP) for autotransplantation of third molars as a successful technique to provide immediate tooth structure for space maintenance and masticatory function when premature loss of a permanent tooth occurs and other dental restorative options are not indicated. MATERIALS AND METHODS: This study included 10 healthy patients 10 to 17 years of age with at least 1 immature third molar (one to two thirds of root formation) used to replace extracted non-restorable teeth...
April 25, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28527851/intentional-replantation-of-an-avulsed-immature-permanent-incisor-a-case-report
#5
Claudio Maniglia-Ferreira, Fabio de Almeida Gomes, Marcelo de Morais Vitoriano
This case report discusses the successful endodontic treatment of an open apex maxillary right permanent central incisor that had been avulsed and incorrectly replanted in a 7-year-old patient. The tooth was carefully re-extracted followed by cleaning of the alveolar socket and immediate replantation. However, pulp necrosis was diagnosed, and regenerative endodontic treatment was performed. The root canal system was disinfected by passive ultrasonic irrigation with 2.5% sodium hypochlorite. At the first visit, the tooth was repositioned and immobilized with an appropriate semirigid splint...
May 17, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/28527848/combined-therapy-for-a-rare-case-of-type-iii-dens-invaginatus-in-a-mandibular-central-incisor-with-a-periapical-lesion-a-case-report
#6
Ping Zhang, Xin Wei
Type III dens invaginatus has a complex root canal structure that poses a greater challenge when endodontic treatment is necessary. Type III dens invaginatus rarely affects mandibular central incisors. In this case, we reported a combined therapy of type III dens invaginatus in a mandibular central incisor with a periapical lesion. Cone-beam computed tomographic (CBCT) imaging was used in the diagnosis and management of the unusual anatomy of dens invaginatus. First, the hard tissue of the dens invaginatus was removed using a dental operating microscope...
May 17, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/28527844/evaluation-of-various-pretreatments-to-fiber-post-on-the-push-out-bond-strength-of-root-canal-dentin
#7
Ömer Kırmalı, Özlem Üstün, Alper Kapdan, Alper Kuştarcı
INTRODUCTION: The aim of this in vitro study was to compare the effect of different pretreatments (fiber post) with the laser-activated irrigation (LAI) technique (for removal of the smear layer) on root canal dentin in terms of push-out bond strength (PBS) in a fiber post. METHODS: Fifty freshly extracted mandibular single-rooted premolars were prepared, and LAI was applied to all roots (17% EDTA was 5 mL for 120 seconds with an erbium, chromium:yttrium-scandium-gallium-garnet laser [0...
May 17, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/28527842/diagnostic-accuracy-of-periapical-radiography-and-cone-beam-computed-tomography-in-identifying-root-canal-configuration-of-human-premolars
#8
Thiago Oliveira Sousa, Francisco Haiter-Neto, Eduarda Helena Leandro Nascimento, Leonardo Vieira Peroni, Deborah Queiroz Freitas, Bassam Hassan
INTRODUCTION: The aim of this study was to assess the diagnostic accuracy of periapical radiography (PR) and cone-beam computed tomographic (CBCT) imaging in the detection of the root canal configuration (RCC) of human premolars. METHODS: PR and CBCT imaging of 114 extracted human premolars were evaluated by 2 oral radiologists. RCC was recorded according to Vertucci's classification. Micro-computed tomographic imaging served as the gold standard to determine RCC...
May 17, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/28527840/prevalence-of-middle-mesial-canals-and-isthmi-in-the-mesial-root-of-mandibular-molars-an-in%C3%A2-vivo-cone-beam-computed-tomographic-study
#9
Mehrnaz Tahmasbi, Poorya Jalali, Madhu K Nair, Sevin Barghan, Umadevi P Nair
INTRODUCTION: Many studies have investigated the morphology of the mandibular molar, but the prevalence of the middle mesial (MM) canal in the mesial root of the mandibular molar is still the subject of controversy. In addition, in previous literature, a true MM canal has not been clearly distinguished from an isthmus between the mesiobuccal and mesiolingual canals. Therefore, the objectives of this study were 2-fold: METHODS: Ninety limited field of view cone-beam computed tomographic scans were observed...
May 17, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/28527839/modulation-of-matrix-metalloproteinase-14-tissue-inhibitor-of-metalloproteinase-3-tissue-inhibitor-of-metalloproteinase-4-and-inducible-nitric-oxide-synthase-in-the-development-of-periapical-lesions
#10
Lorena Teodoro de Castro Cassanta, Virmondes Rodrigues, Jose Roberto Violatti-Filho, Benedito Alves Teixeira Neto, Vinícius Marques Tavares, Eduarda Castelo Branco Araujo Bernal, Danila Malheiros Souza, Marcelo Sivieri Araujo, Sanivia Aparecida de Lima Pereira, Denise Bertulucci Rocha Rodrigues
INTRODUCTION: Periapical cysts and granulomas are chronic lesions caused by an inflammatory immune response against microbial challenge in the root canal. Different cell types, cytokines, and molecules have been associated with periapical lesion formation and expansion. Therefore, because of the chronic inflammatory state of these lesions, the aim of this study was to evaluate the in situ expression of matrix metalloproteinase (MMP)-14 and -19, tissue inhibitor of metalloproteinase (TIMP)-3 and -4, CD68, and inducible nitric oxide synthase (iNOS) in periapical cysts and granulomas...
May 17, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/28525466/facet-preserving-technique-by-en-bloc-flavectomy-in-microscopic-posterior-decompression-surgery-for-lumbar-spinal-stenosis-semicircumferential-decompression-scd
#11
Yasushi Fujiwara, Hideki Manabe, Tadayoshi Sumida, Bunichiro Izumi, Kazuyoshi Nakanishi, Nobuhiro Tanaka, Nobuo Adachi
Posterior decompression surgery which enlarges the spinal canal in cases with lumbar spinal stenosis is the most fundamental technique in spine surgery, but controversy still remains for the exact technique. Because nerve roots run under the ventral side on the superior articular process (SAP), achieving both facet joint preservation and nerve root decompression is problematic. In conventional laminotomies or laminectomies, medial facetectomies are performed to decompress the nerve root, but it is ideal to preserve the facet joints completely for preserving joint stability...
June 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/28514342/-evaluation-of-main-and-additional-root-canal-curvature-in-maxillary-molars
#12
O A Levenets, V V Alyamovskiy, A A Levenets, S A Ovchinnikova
The aim of the study was to investigate the degree of the main and additional root canal curvatures of the maxillary molars in Krasnoyarsk population. Main and additional root canal curvature was measured in 48 maxillary first molars (M1) and 122 second molars (M2) with cone beam computer tomography. In total 476 measurements were taken for M1 and 1038 for M2 (all measurements were doubled in sagittal and coronal views). M2 showed more variety of root canal morphology and significantly higher proportion of additional root canals...
2017: Stomatologii︠a︡
https://www.readbyqxmd.com/read/28513789/effect-of-final-irrigation-protocols-on-microhardness-reduction-and-erosion-of-root-canal-dentin
#13
Flávia Emi Razera Baldasso, Luana Roleto, Vinicius Duval da Silva, Renata Dornelles Morgental, Patrícia Maria Poli Kopper
This study aimed to evaluate the effect of final irrigation protocols on microhardness reduction and erosion of root canal dentin. Sixty root canals from mandibular incisors were instrumented and randomly divided into six groups (n = 10) according to the irrigant used: QMiX, 17% EDTA, 10% citric acid (CA), 1% peracetic acid (PA), 2.5% NaOCl (solution control), and distilled water (negative control). The chelating solutions were used to irrigate the canal followed by 2.5% NaOCl as a final flush. After the irrigation protocols, all specimens were rinsed with 10 mL of distilled water to remove any residue of the chemical solutions...
May 15, 2017: Brazilian Oral Research
https://www.readbyqxmd.com/read/28512652/comparison-of-simplistic-biofilm-models-for-%C3%A2-evaluating-irrigating-solutions
#14
Maximilian Gänsbauer, Andreas Burkovski, Matthias Karl, Tanja Grobecker-Karl
OBJECTIVE: Many innovations have recently been implemented in the field of endodontics, often based on a variety of in-vitro/ex-vivo test setups. It was the goal of this research to compare different biofilm models for evaluating the effectiveness of rinsing solutions. METHOD AND MATERIALS: Three different models have been applied in this study, including petri dishes with nutrient medium, arrays of human dentin disks, and split bovine root segments. The susceptibility of biofilms formed by Enterococcus faecalis to commonly used endodontic irrigants was tested...
May 16, 2017: Quintessence International
https://www.readbyqxmd.com/read/28512536/effect-of-smear-clear-and-some-other-commonly-used-irrigants-on-dislodgement-resistance-of-mineral-trioxide-aggregate-to-root-dentin
#15
Mona Sadegh, Hasti Sohrabi, Mohamadjavad Kharazifard, Farzaneh Afkhami
BACKGROUND: This study aimed to assess the push-out bond strength of mineral trioxide aggregate (MTA) to root canal dentin after irrigation with Smear Clear in comparison with 2.5% sodium hypochlorite (NaOCl), 2% chlorhexidine (CHX) and saline as commonly used root canal irrigants. MATERIAL AND METHODS: The coronal and mid-root areas of maxillary anterior teeth were horizontally sectioned into one-millimeter thick slices. The root canal lumen of dentinal slices was dilated using a diamond bur with 1...
May 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/28512498/treatment-outcomes-of-full-pulpotomy-as-an-alternative-to-tooth-extraction-in-molars-with-hyperplastic-irreversible-pulpitis-a-case-report
#16
Saeed Asgary, Prashant Verma, Ali Nosrat
Root canal therapy (RCT) is a common and successful treatment for irreversible pulpitis due to carious pulp exposure in mature permanent teeth. However, it is often an expensive procedure, may require multiple appointments, and requires a high level of training and clinical skill, specifically in molars. Uninsured patients, low-income patients, and patients with limited access to specialist care often elect for extraction of restorable teeth with irreversible pulpitis. There is a need for an alternative affordable treatment option to preserve their teeth and maintain chewing function...
2017: Iranian Endodontic Journal
https://www.readbyqxmd.com/read/28512497/management-of-perforating-idiopathic-internal-root-resorption
#17
Dalia Abdullah, Farah Eziana Hussein, Huwaina Abd Ghani
This case report describes the endodontic treatment of an idiopathic perforated internal root resorption. A 24-year-old male Malay patient presented with internal root resorption of two of his anterior teeth. The medical history was non-contributory and he had no history of traumatic injury or orthodontic treatment. Cone-beam computed tomography (CBCT) determined the nature, location and severity of the resorptive lesion. Non-surgical root canal treatment of tooth #22 and combined non-surgical and surgical approach for tooth #11 were carried out using mineral trioxide aggregate (MTA) as the filling material...
2017: Iranian Endodontic Journal
https://www.readbyqxmd.com/read/28512496/nonsurgical-management-of-a-large-periapical-lesion-a-case-report
#18
Sajedeh Ghorbanzadeh, Hengameh Ashraf, Sepanta Hosseinpour, Fatemeh Ghorbanzadeh
This case report describes the non-surgical management of a large cyst-like periapical lesion in the mandible of a 16-year-old female with the chief complaint of periodic swelling and pus drainage from the mandibular anterior region gingivae with no history of pain and traumatic accident in this area. Both mandibular central incisors had extensive caries. Root canals of both mandibular central incisors were filled with calcium hydroxide. After 10 days, endodontic therapy was carried out on both teeth. Clinical and radiographic re-evaluations at 3 and 12 months revealed progressing bone healing...
2017: Iranian Endodontic Journal
https://www.readbyqxmd.com/read/28512495/endodontic-management-of-open-apex-teeth-using-lyophilized-collagen-sponge-and-mta-cement-report-of-two-cases
#19
Miriam Graziele Magro, Milton Carlos Kuga, Weber Adad Ricci, Kátia Cristina Keine, Mateus Rodrigues Tonetto, Suellen Linares Lima, Alvaro Henrique Borges, Lauriê Garcia Belizário, Matheus Coêlho Bandeca
Teeth with open apices, such as in immature teeth or those with apical root resorption are clinical cases with difficult immediate resolution. With the use of mineral trioxide aggregate (MTA) in dentistry, it was possible to optimize the treatment time of these cases by immediate placement of apical plug and the root canal filling. However, some negative effects can occur if MTA is extruded beyond the apex. To avoid this accident, it has been recommended to use of an apical matrix prior to placement of MTA...
2017: Iranian Endodontic Journal
https://www.readbyqxmd.com/read/28512494/cleanliness-of-canal-walls-following-gutta-percha-removal-with-hand-files-race-and-race-plus-xp-endo-finisher-instruments-a-photographic-in-vitro-analysis
#20
Kasra Karamifar, Neda Mehrasa, Pouyan Pardis, Mohammad Ali Saghiri
INTRODUCTION: Gutta-percha must be removed from the root canal space during retreatment to ensure a more favorable outcome. The aim of this study was to compare the efficacy of hand instruments, RaCe and RaCe plus XP-endo finisher instruments in removal of gutta-percha from root canal walls during retreatment. METHODS AND MATERIALS: Thirty single-rooted premolars were prepared, obturated, and divided into three groups according to retreatment method; in group 1, retreatment was carried out by hand instruments, while in groups 2 and 3 retreatment was done using RaCe rotary files alone or accompanied by XP-endo finisher instruments, respectively...
2017: Iranian Endodontic Journal
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