نتایج جستجو برای: pulp chamber perforation

تعداد نتایج: 79006  

Journal: :Brazilian oral research 2011
Bruno Neves Cavalcanti Sigmar de Mello Rode Cristiane Miranda França Márcia Martins Marques

Pulp repair is a complex process whose mechanisms are not yet fully understood. The first immune cells to reach the damaged pulp are neutrophils that play an important role in releasing cytokines and in phagocytosis. The objective of this study was to analyze the effect of different pulp-capping materials on the secretion of interleukin-1 beta (IL-1β) and interleukin-8 (IL-8) by migrating human...

2015
Michel Goldberg Akram Njeh Emel Uzunoglu

The importance of inflammation has been underestimated in pulpal healing, and in the past, it has been considered only as an undesirable effect. Associated with moderate inflammation, necrosis includes pyroptosis, apoptosis, and nemosis. There are now evidences that inflammation is a prerequisite for pulp healing, with series of events ahead of regeneration. Immunocompetent cells are recruited ...

Journal: :BMC Oral Health 2007
Adeleke O Oginni Comfort A Adekoya-Sofowora

BACKGROUND Epidemiological studies show that about 11.6% to 33.0% of all boys and about 3.6% to 19.3% of all girls suffer dental trauma of varying severity before the age of 12 years. Moderate injuries to the periodontium such as concussion and subluxation are usually associated with relatively minor symptoms and hence may go unnoticed by the patient or the dentist, if consulted. Patients with ...

2003
Eliyahu Mass Uri Zilberman

General agreement is that pulp exposure of an immature tooth with partially developed roots requires a vital technique to enable continued normal root development. It also is universally accepted that the vitality of exposed pulps of young permanent teeth should be preserved, even when roots are completed. In all teeth, with or without dosed apices, apposition of dentin along the canal walls an...

2016
A Njeh E Uzunoğlu H Ardila-Osorio S Simon A Berdal O Kellermann

Background: After indirect capping, injured odontoblasts generate reactionary dentin, whereas after direct capping of a pulp exposure pulp, cells stimulate the formation of reparative dentin. The aim of this study was to evaluate and compare the effects of two direct capping agents on pulp tissue reactions: Hydrogel (a bovine serum albumin (BSA)/glutaraldehyde,) and Dycal (a calcium hydroxide-b...

A new parametric model was developed for predicting cut point of hydraulic classifiers. The model directly uses operating parameters including pulp flowrate, feed particle size characteristics, pulp solids content, solid density and particles retention time in the classification chamber and also covers uncontrollable errors using calibration constants. The model applicability was first verified...

Journal: :International endodontic journal 2009
K Reynolds J D Johnson N Cohenca

AIM To present a case report in which the pulp of two bilateral mandibular premolars with dens evaginatus were revascularized using a modified novel technique to avoid undesired crown discolouration. SUMMARY Recently, regeneration of necrotic pulps has become an alternative conservative treatment option for young permanent teeth with immature roots and is a subject of great interest in the fi...

Journal: :The journal of contemporary dental practice 2009
Ricardo Danil Guiraldo Simonides Consani Mario Alexandre Coelho Sinhoreti Lourenco Correr-Sobrinho Luis Felipe Jochims Schneider

AIM The aim of this study was to investigate the effect of different incremental insertion techniques, photoactivation, and restorative phases on thermal variations occurring during the polymerization of Filtek Z250 composite resin. METHODS AND MATERIALS The experiment was conducted using 90 bovine incisor teeth. The teeth were randomly assigned to three groups according to the technique used...

Journal: :Medicina oral, patologia oral y cirugia bucal 2011
Silvia González-Castillo María-Estela Bailón-Sánchez María-Paloma González-Rodríguez Rafael Poyatos-Martínez Carmen-María Ferrer-Luque

OBJECTIVES To evaluate the sealing capability of Cavit™ G with or without Clearfil™ S3 Bond and Prime & Bond NT placed in the pulp chamber. STUDY DESIGN Forty single rooted premolars, extracted for orthodontic and periodontal reasons, with intact coronal surface and mature apices, were standardized to a length of 15 mm. The teeth were instrumented, filled with a gutta-percha master cone and d...

Journal: :Journal of clinical and diagnostic research : JCDR 2013
Gaurav Patri Yoshaskam Agnihotri Saketh Rama Rao Namratha Lakshmi Sambarta Das

AIM To investigate the pulp chamber penetration of bleaching agent in intact teeth and teeth following restorative procedure. METHODOLOGY Sixty extracted human incisors were selected and divided into 6 Groups. Four Groups were restored with hybrid composite resin and resin modified glass ionomer cement respectively, while 2 Groups were left intact. The Groups were then immersed in the treatme...

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