scholarly journals FUNDAMENTAL CONCEPT OF MONOBLOCK IN ENDODONTICS

2021 ◽  
Vol 9 (02) ◽  
pp. 539-546
Author(s):  
Sreeja S. Nair ◽  
◽  
Amit H. Patil ◽  
Ashish K. Jain ◽  
Sheetal D. Mali ◽  
...  
Keyword(s):  
Root Canal ◽  
Fundamental Concept ◽  
Classical Concept ◽  
Restorative Dentistry ◽  
Root Dentin ◽  
Materials Used ◽  
Dentin Adhesive

The advent of dentin adhesive technology in endodontics has made monoblock a well known concept in endodontics. However it has created many controversies on whether monoblock would reinforce the roots and provide a superior coronal seal.In this review, attempts have been made to understand monoblock in a broader aspect and understand how the monoblock concept can be applied to the materials used till date which rehabilitates the root canal space. The potential of currently available bondable materials to achieve mechanically homogeneous units with root dentin is then discussed in relation to the classical concept in which the term monoblock was first employed in restorative dentistry and subsequently in endodontics.

scholarly journals Root dentine and endodontic instrumentation: cutting edge microscopic imaging

2016 ◽  
Vol 6 (3) ◽  
pp. 20150113 ◽  
Author(s):  
Amre R. Atmeh ◽  
Timothy F. Watson
Keyword(s):  
Root Canal ◽  
Nickel Titanium ◽  
Canal Wall ◽  
Restorative Dentistry ◽  
Video Images ◽  
Dental Hard Tissues ◽  
Materials Used ◽  
First Time ◽  
Insight Into ◽  
Microscopic Techniques

Cutting of the dental hard tissues is an integral part of restorative dentistry. Cutting of the root dentine is also needed in preparation prior to endodontic treatment, with significant commercial investment for the development of flexible cutting instruments based around nickel titanium (NiTi) alloys. This paper describes the evolution of endodontic cutting instruments, both in materials used, e.g. the transition from stainless steel to NiTi, and the design of the actual instruments themselves and their method of activation—by hand or motor driven. We have been examining tooth-cutting interactions microscopically for over 25 years using a variety of microscopic techniques; in particular, video-rate confocal microscopy. This has given a unique insight into how many of the procedures that we take for granted are achieved in clinical practice, by showing microscopic video images of the cutting as it occurs within the tooth. This technology has now been extended to allow imaging of the endodontic instrument and the root canal wall for the first time. We are able to image dentine distortion and crack propagation during endodontic filing of the root canal space. We are also able to visualize the often claimed, but seldom seen action of contemporary endodontic instruments.

Retrieval of fractured Endodontic Instrument under dental operating microscope using ultrasonic tips : A Case Report

2020 ◽  
Vol 11 (3) ◽  
pp. 3316-3321
Author(s):  
Samrudhi Khatod ◽  
Anuja Ikhar ◽  
Pradnya Nikhade ◽  
Manoj chandak
Keyword(s):  
Case Report ◽  
Root Canal ◽  
Fracture Resistance ◽  
Root Canal Treatment ◽  
Operating Microscope ◽  
Severe Loss ◽  
Mechanical Procedure ◽  
Root Dentin ◽  
Fracture Level

A Patient came with the complaint of pain in the lower right back region of the jaw. Root canal treatment was planned. While preparing for the bio-mechanical procedure, the Hand pro taper fractured in the apical third. Iatrogenic occurred as a result of the fracture of the endodontic instrument. Retrieval of the fractured instrument was planned to complete the cleaning and shaping of the canal. The removal of the fractured instrument was planned to be done under the Dental Operating Microscope. The use of an operating microscope enhanced the illumination and the magnification of the instrument. This illumination and magnification helped in the precision of removal. The ultrasonic tip enabled to reach of the fractured instrument in the canal and loosen the dentin around the fractured instrument. It allowed easy retrieval of the fractured instrument. During the retrieval procedure, the fractured instrument was bypassed before the use of the ultrasonic tip. After the removal of the fractured instrument, cleaning and shaping were completed, followed by obturation, definitive restoration, and prosthesis. As the removal of the fractured instrument enabled complete cleaning and shaping, it improved the prognosis of the case. When the endodontic instrument gets fractured, it should be analyzed over the radiograph to assess the fracture level, the anatomy of the root canal, size of the fractured instrument, check accessibility, stage of fracture, etc. If all the above criteria are met with the removal of the instrument only then, replacement should be tried. Otherwise, it may lead to a severe loss of root dentin, decreasing fracture resistance of the root.

scholarly journals Debunking the Concept of Dentinal Tubule Penetration of Endodontic Sealers: Sealer Staining with Rhodamine B Fluorescent Dye Is an Inadequate Method

Materials ◽  
2021 ◽  
Vol 14 (12) ◽  
pp. 3211
Author(s):  
David Donnermeyer ◽  
Sina Schmidt ◽  
Arno Rohrbach ◽  
Johannes Berlandi ◽  
Sebastian Bürklein ◽  
...  
Keyword(s):  
Penetration Depth ◽  
Rhodamine B ◽  
Root Canal ◽  
Laser Scanning Microscopy ◽  
Confocal Laser ◽  
Dentinal Tubule ◽  
Dentinal Tubules ◽  
Ah Plus ◽  
Root Dentin ◽  
Rhodamine B Dye

The aim of this study was to investigate the suitability of rhodamine B dye staining of an epoxy resin sealer (AH Plus) and calcium-silicate-based sealers (Total Fill BC Sealer, BioRoot RCS) to represent the penetration depth of the sealers into dentinal tubules after root canal obturation. In a three-step process, (1) leaching of rhodamine B from sealers into a buffer solution, (2) passive penetration of leached rhodamine B into dentinal tubules, and (3) conformity of rhodamine B penetration assessed by confocal laser scanning microscopy (CLSM), and sealer penetration assessed by scanning electron microscopy (SEM), in root-canal-filled teeth, were evaluated. Rhodamine B dye massively leached out of Total Fill BC Sealer and BioRoot RCS into the phosphate-buffered saline (PBS). A pinkish coloration of AH Plus was found after contact with PBS. Leached rhodamine B dye passively penetrated dentinal tubules from all three sealers when placed on root dentin. No correlation was observed between sealer penetration in SEM and rhodamine B penetration in CLSM. Staining of sealers using rhodamine B is an inadequate method with which to evaluate sealer penetration depth into dentinal tubules, as it overestimates the penetration of sealers into root dentin tubules.

Restorative dentistry 4: endodontics

2014 ◽  
pp. 325-350
Author(s):  
David A. Mitchell ◽  
Laura Mitchell ◽  
Lorna McCaul
Keyword(s):  
Treatment Outcomes ◽  
Root Canal ◽  
Root Canal Treatment ◽  
Restorative Dentistry ◽  
Root Canal Preparation ◽  
Canal System ◽  
Root Canal Obturation ◽  
Root Canal System ◽  
Pulp Vitality

Contents. Preserving pulp vitality. The root canal system. Root canal treatment—rationale. Root canal treatment—instruments. Root canal treatment—materials. Root canal preparation—1. Root canal preparation—2. Common errors in canal preparation. Root canal obturation. Some endodontic problems and their management. Restoration of the root-treated tooth. Treatment outcomes.

Effect of Root Canal Preparation Techniques on Crack Formation in Root Dentin

2019 ◽  
Vol 45 (4) ◽  
pp. 447-452 ◽  
Author(s):  
Yazdan Shantiaee ◽  
Omid Dianat ◽  
Golnaz Mosayebi ◽  
Mahshid Namdari ◽  
Patricia Tordik
Keyword(s):  
Root Canal ◽  
Crack Formation ◽  
Root Canal Preparation ◽  
Root Dentin ◽  
Preparation Techniques

Bond strength of epoxy resin-based root canal sealer to human root dentin irradiated with Er,Cr:YSGG laser

2016 ◽  
Vol 48 (10) ◽  
pp. 985-994 ◽  
Author(s):  
Keila de Almeida Franceschini ◽  
Yara Teresinha Corrêa Silva-Sousa ◽  
Fabiane Carneiro Lopes ◽  
Rodrigo Dantas Pereira ◽  
Regina Guenka Palma-Dibb ◽  
...  
Keyword(s):  
Bond Strength ◽  
Epoxy Resin ◽  
Root Canal ◽  
Root Canal Sealer ◽  
Root Dentin

scholarly journals [NO TITLE AVAILABLE]

2007 ◽  
Vol 18 (4) ◽  
pp. 289-293 ◽  
Author(s):  
Orlando Limongi ◽  
Diana Santana de Albuquerque ◽  
Flares Baratto Filho ◽  
José Roberto Vanni ◽  
Elias P. Motcy de Oliveira ◽  
...  
Keyword(s):  
Root Canal ◽  
Multislice Ct ◽  
In Vitro Study ◽  
Ct Scanner ◽  
Root Canals ◽  
Group I ◽  
Working Length ◽  
Root Dentin ◽  
Dentin Thickness

This in vitro study compared, using computed tomography (CT), the amount of dentin removed from root canal walls by manual and mechanical rotary instrumentation techniques. Forty mandibular incisors with dental crown and a single canal were selected. The teeth were randomly assigned to two groups, according to the technique used for root canal preparation: Group I - manual instrumentation with stainless steel files; Group II - mechanical instrumentation with RaCe rotary nickel-titanium instruments. In each tooth, root dentin thickness of the buccal, lingual, mesial and distal surfaces in the apical, middle and cervical thirds of the canal was measured (in mm) using a multislice CT scanner (Siemens Emotion, Duo). Data were stored in the SPSS v. 11.5 and SigmaPlot 2001 v. 7.101 softwares. After crown opening, working length was determined, root canals were instrumented and new CT scans were taken for assessment of root dentin thickness. Pre- and post-instrumentation data were compared and analyzed statistically by ANOVA and Tukey's post-hoc test for significant differences (p=0.05). Based on the findings of this study, it may be concluded that regarding dentin removal from root canal walls during instrumentation, neither of the techniques can be considered more effective than the other.

scholarly journals Root Dentin Strain and Temperature Rise During Endodontic Treatment and Post Rehabilitation

2013 ◽  
Vol 24 (6) ◽  
pp. 591-598 ◽  
Author(s):  
Euridsse Sulemane Amade ◽  
Veridiana Resende Novais ◽  
Marina Guimaraes Roscoe ◽  
Fabiane Maria Ferreira Azevedo ◽  
Aline Aredes Bicalho ◽  
...  
Keyword(s):  
Temperature Rise ◽  
Root Canal ◽  
Root Surface ◽  
Endodontic Treatment ◽  
Resin Cement ◽  
Cervical Region ◽  
Apical Region ◽  
Root Canal Filling ◽  
Root Dentin ◽  
Post Space

This study investigated the effects of endodontic treatment procedures and different post systems rehabilitation steps on the strain and temperature rise on apical and cervical root dentin regions. Twenty-one extracted human canine teeth had two strain gages attached to the distal root surface and two thermocouples attached to the mesial root surface (cervical and apical). The strain and temperature rise were recorded during the following procedures: root canal preparation, final rinse and drying, root canal filling and canal relief. Then the teeth were divided into three groups (n=7), according to the type of post system: CPC, cast post and core; FGP, fiberglass post; and PSP, prefabricated steel post. Data continued to be recorded during the post space preparation, post modeling (only for CPC), post trying and post cementation. Data were subjected to a two-way ANOVA followed by Tukey's test (α=0.05). The post-space preparation caused the highest temperature rise (4.0-14.9 °C) and the highest strain in the apical region during irrespective of post type. The resin cement light-activation resulted in significant temperature increases in the cervical region for all of the groups. The canal relief and the post-space preparation produced highest temperature rises. The CPC post modeling resulted in higher root strain level similarly the level of post preparation. The PSP resulted in highest strain during post trying and post cementation.

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