نتایج جستجو برای: obturation materials

تعداد نتایج: 437083  

2014
Mahdi Tabrizizade Yasin Asadi Aidin Sooratgar Saeed Moradi Hossein Sooratgar Fatemeh Ayatollahi

INTRODUCTION Endodontic treatment in pulpless immature teeth is challenging due to the lack of an apical stop. Insertion of an apical plug is an alternative to conventional long-term apexification with calcium hydroxide. The aim of this study was to compare the apical microleakage of mineral trioxide aggregate (MTA) and calcium-enriched mixture (CEM) cement as apical plugs with three different ...

2017
Mohd Yusmiaidil Putera Mohd Yusof Nur Liyana Abdul Rahman Amiza Aqiela Ahmad Asri Noor Ilyani Othman Ilham Wan Mokhtar

Purpose This study was performed to quantify the repeat rate of imaging acquisitions based on different clinical examinations, and to assess the prevalence of error types in intraoral bitewing and periapical imaging using a digital complementary metal-oxide-semiconductor (CMOS) intraoral sensor. Materials and Methods A total of 8,030 intraoral images were retrospectively collected from 3 grou...

Journal: :Brazilian dental science 2023

Objective: to compare the quality of obturation, instrumentation time and post-operative pain after pulpectomy in primary molars using manual K-files, Kedo-S Square rotary file systems. Material Methods: a double blinded randomized control trial was conducted 45 children, who were indicated for any one mandibular molars. The canal preparation done either hand files, or files based on groups ass...

Journal: :Dental journal of advance studies 2021

Abstract Introduction Insufficient seal of apex is a significant reason for an endodontist’s disappointment. The materials root-end filling utilized ought to forestall departure possible pollutants into periapical areas. objective this analysis was compare the fixing capacity three materials: white mineral trioxide aggregate (MTA), Portland cement (PC), and Biodentine. This analyzed through tes...

Journal: :Journal of oral science 2011
Wu Zhang Hisashi Suguro Yoshimi Kobayashi Tamotsu Tsurumachi Bunnai Ogiso

This study used transparent epoxy-resin root canal models to evaluate different main root canal tapers and various methods of vertical compaction for warm gutta-percha obturation of lateral depressions. The root canal models had straight main root canals with three tapers and four lateral depressions at right angles to the main root canal, 1.0 mm and 3.0 mm from the apex. Three types of experim...

2016
Reem Siraj Alsulaimani

BACKGROUND Mature teeth with chronic apical abscesses characterized by intermittent discharge of pus through an associated sinus tract. This communication between oral mucosa and periapical inflammation is challenging for the sealing ability of root canal obturation material. Therefore, the study aim was to compare the outcomes of endodontic treatment using mineral trioxide aggregate (MTA) ceme...

تبریزی زاده, مهدی, حاجی قاسمی, فرشید, زارع, محمدرضا, صباغی, سید صالح,

Introduction: Root canal obturation aims at sealing the root canal system to prevent re-contamination of canal and periapical space. Presence of moisture in canal before obturation may posit a negative effect on the quality of canal sealing. Therefore, this study was conducted to investigate the effect of canal contamination with saliva on apical microleakage. Methods: In this laboratory study...

Journal: :Journal of endodontics 2008
Evangelos G Kontakiotis Ioannis N Tsatsoulis Styliani I Papanakou Giorgos N Tzanetakis

The present study was conducted to determine the influence of 2 intracanal medicaments (calcium hydroxide, chlorhexidine gel 2%) when used either alone or combined on the short- and long-term sealing ability of permanent root canal fillings. Ninety human upper central incisors were divided into 4 experimental groups (n=20). All root canals were instrumented in a step-back motion and then treate...

Journal: :iranian endodontic journal 0
maryam zare jahromi department of endodontics, dental school, islamic azad university of khorasgan, isfahan, iran mehrdad barekatain department of operative dentistry, dental school, islamic azad university of khorasgan, isfahan, iran. maziar ebrahimi department of endodontics, dental school, islamic azad university of khorasgan, isfahan, iran. bahare askari dentist, isfehan, iran.

introduction: the production of smear layer during canal instrumentation is thought to increase coronal microleakage even after canal obturation. previous studies have shown that the type of irrigant does not necessarily affect the seal of the obturation. our study aimed to evaluate the effect of three irrigation solutions (mtad, citric acid and edta/naocl) on the coronal microleakage of root c...

Akam Saeidi Ali Bijani Azadeh Hesarkhani, Hanif Allahbakhshi, Zahra Sadat Madani

Background:One of the main reasons for extraction of endodontically treated teeth is vertical root fracture (VRF). Some factors such as root canal treatment are involved in vertical root fracture because of their potential to weaken the tooth structure. Therefore, this study aimed to investigate the effect of combining different obturation materials and rotary systems on the fr...

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