Materials

Journal Browser

► Journal Browser

New Materials and Techniques for Root Canal Preparation and Filling

Share This Special Issue

Special Issue Editor

Dr. David Donnermeyer

E-Mail Website
Guest Editor

Department of Periodontology and Operative Dentistry, Westphalian Wilhelms-University, Albert-Schweitzer-Campus 1, Building W 30, 48149 Münster, Germany
Interests: endodontics; bioceramic sealer; root canal sealer; root canal filling materials; calcium-silicate-based sealers; root canal obturation; root canal filling

Special Issue Information

Dear Colleagues,

The quality of root canal treatment has improved over recent decades due to milestone developments of new materials, concepts and techniques. Ongoing development shows the needs for further improvements. Modifications of Nickel–Titanium alloys, for example, were crucial for the introduction of highly flexible and fracture resistant endodontic instruments. In addition, root canal filling materials have evolved in terms of biocompatibility and bioactivity. New developments can enhance present materials, and new materials and techniques need to undergo independent investigations.

The main aim of this Special Issue is to present recent progress in root canal preparation and root canal filing.

This Special Issue will include high-quality original research papers, review papers, and case studies dealing with the development and application of new materials and techniques for root canal preparation and filling.

It is my pleasure to invite you to submit original research papers and state-of-the-art reviews for this Special Issue.

Dr. David Donnermeyer
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Materials is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

Ni-Ti-File
Nickel–Titanium
root canal preparation
root canal treatment
root canal obturation
endodontic sealer
gutta-percha
calcium-silicate-based sealer
root canal irrigation

Published Papers (2 papers)

Download All Papers

Research

11 pages, 3282 KiB

Open AccessArticle

Cyclic Fatigue of Different Reciprocating Endodontic Instruments Using Matching Artificial Root Canals at Body Temperature In Vitro

by Sebastian Bürklein, Paul Maßmann, Edgar Schäfer and David Donnermeyer

Materials 2024, 17(4), 827; https://doi.org/10.3390/ma17040827 - 08 Feb 2024

Cited by 1 | Viewed by 545

Abstract

Reciprocating motion expands the lifetime of endodontic instruments during the preparation of severely curved root canals. This study aimed to investigate the time to fracture (TTF) and number of cycles to failure (NCF) of different reciprocating instruments (n = 20 in each group) at body temperature using a dynamic testing model (amplitude = 3 mm). Reciproc Blue (RPB), size 25/.08, WaveOne Gold (WOG) 25/.07, Procodile (Proc) 25/.06, R-Motion (RM_06) 25/.06 and R-Motion (RM_04) 30/.04 instruments were tested in their specific reciprocating motion in artificial matching root canals (size of the instrument ± 0.02 mm; angle of curvature 60°, radius 5.0 mm, and centre of curvature 5.0 mm from apical endpoint). The number of fractured instruments, TTF, NCF, the and lengths of the fractured instruments were recorded and statistically analysed using the Chi-Square or Kruskal–Wallis test. Both TTF (median 720, 643, 562, 406, 254 s) and the NCF (3600, 3215, 2810, 2032, 1482 cycles) decreased in the following order RM_06 > RPB > RM_04 > Proc > WOG with partially significant differences. During testing, only six RM_06 instruments fractured, whereas 16/20 (RPB), 18/20 (Proc), and 20/20 (RM_04, WOG) fractures were recorded (p < 0.05). Within the limitations of the present study, blue-coloured RPB and RM instruments exhibited a significantly superior cyclic fatigue resistance compared to SE-NiTi and Gold-wire instruments. Heat treatment, cross-sectional design and core mass significantly influenced the longevity of reciprocating instruments in cyclic dynamic testing. Full article

(This article belongs to the Special Issue New Materials and Techniques for Root Canal Preparation and Filling)

► Show Figures

Figure 1

14 pages, 5695 KiB

Open AccessArticle

Endodontic Radiopacifying Application of Barium Titanate Prepared through a Combination of Mechanical Milling and Heat Treatment

by Hsiu-Na Lin, Wei-Wen Chen, Chun-Chun Hsu, May-Show Chen, Pei-Jung Chang, Wei-Min Chang, Fang-Hao Zhang, Chin-Yi Chen, Pee-Yew Lee and Chung-Kwei Lin

Materials 2023, 16(23), 7270; https://doi.org/10.3390/ma16237270 - 22 Nov 2023

Viewed by 684

Abstract

Mineral trioxide aggregates (MTA) are commonly used as endodontic filling materials but suffer from a long setting time and tooth discoloration. In the present study, the feasibility of using barium titanate (BTO) for discoloration and a calcium chloride (CaCl₂) solution to shorten the setting time was investigated. BTO powder was prepared using high-energy ball milling for 3 h, followed by sintering at 700–1300 °C for 2 h. X-ray diffraction was used to examine the crystallinity and crystalline size of the as-milled and heat-treated powders. MTA-like cements were then prepared using 20–40 wt.% BTO as a radiopacifier and solidified using a 0–30% CaCl₂ solution. The corresponding radiopacity, diametral tensile strength (DTS), initial and final setting times, and discoloration performance were examined. The experimental results showed that for the BTO powder prepared using a combination of mechanical milling and heat treatment, the crystallinity and crystalline size increased with the increasing sintering temperature. The BTO sintered at 1300 °C (i.e., BTO-13) exhibited the best radiopacity and DTS. The MTA-like cement supplemented with 30% BTO-13 and solidified with a 10% CaCl₂ solution exhibited a radiopacity of 3.68 ± 0.24 mmAl and a DTS of 2.54 ± 0.28 MPa, respectively. In the accelerated discoloration examination using UV irradiation, the color difference was less than 1.6 and significantly lower than the clinically perceptible level (3.7). This novel MTA exhibiting a superior color stability, shortened setting time, and excellent biocompatibility has potential for use in endodontic applications. Full article

(This article belongs to the Special Issue New Materials and Techniques for Root Canal Preparation and Filling)

► Show Figures

Figure 1

Journal Menu

Journal Browser

New Materials and Techniques for Root Canal Preparation and Filling

Share This Special Issue

Special Issue Editor

Special Issue Information

Keywords

Published Papers (2 papers)

Research

Further Information

Guidelines

MDPI Initiatives

Follow MDPI