Impact of Cross-Sectional Design in Single-File Rotary System on Apical Debris Extrusion
Impact of Cross-Sectional Design in Single-File Rotary System on Apical Debris Extrusion and Postoperative Pain Following Single-Visit Root Canal Treatment: An In Vitro and Randomized Clinical Study
調査の概要
状態
状態
条件
条件
介入・治療
介入・治療
詳細な説明
Root canal shaping represents a critical phase in endodontic treatment, as it facilitates effective cleaning and disinfection while preserving the original canal anatomy. The objective is to create a continuously tapered conical shape from coronal to apical regions without inducing procedural errors such as canal transportation, ledge formation, zipping, or perforation.
With advancements in nickel-titanium (NiTi) technology, modern rotary systems have been developed to enhance shaping efficiency, improve debris removal, and reduce preparation time. Recently, single-file rotary systems have gained popularity due to their simplified protocols, reduced instrument fatigue, and improved clinical efficiency.
A novel concept in instrument design involves flat-sided rotary files manufactured from proprietary heat-treated NiTi alloys, such as AF One Blue and Platinum V.EU. These instruments exhibit a modified S-shaped cross-section with an inactive tip and a distinctive flat surface. The flat-sided design reduces the metal mass of the instrument, potentially enhancing flexibility, cyclic fatigue resistance,and facilitating coronal transportation of debris during instrumentation.
In contrast, One Curve is a single-file rotary system manufactured from heat treated C-wire alloy, which offers controlled memory properties, improved flexibility, and enhanced resistance to cyclic fatigue. It operates in continuous rotation and features a variable cross-sectional design that promotes efficient cutting while maintaining effective debris removal during canal preparation.
Apical extrusion of debris is an inevitable consequence of root canal instrumentation. The extrusion of dentinal debris, microorganisms, and irrigants beyond the apical foramen may induce an inflammatory response in the periapical tissues, which is considered a major contributing factor to postoperative pain. The amount of apically extruded debris has been shown to vary according to the design and kinematics of the instrumentation system used.
Despite the continuous evolution in instrument design, there is limited evidence regarding the influence of flat-sided rotary systems compared to non-flat cross-sectional systems on apical debris extrusion and postoperative pain,particularly in curved canals. Furthermore, the potential relationship between debris extrusion and the severity of postoperative pain remains insufficiently explored.
研究の種類
研究の種類
入学 (推定)
入学
段階
段階
- 適用できない
連絡先と場所
研究連絡先
研究連絡先
- 名前:Nahla Nasr El-Din Fouad Mohamed, MSC
- 電話番号:+201009067349
- メール:nannanasr248@gmail.com
研究連絡先のバックアップ
- 名前:Dalia Ali Mokarab, M.D
- 電話番号:+201068121523
- メール:dalia.mokarab@mu.edu.eg
研究場所
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Minya Governorate
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Minya、Minya Governorate、エジプト
- 募集
- Endodontics, Faculty of Dentistry, Minia University
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コンタクト:
- Dalia Ali Mokarab, M.D
- 電話番号:+201068121523
- メール:dalia.mokarab@mu.edu.eg
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コンタクト:
- Ahmed Ali Yossef, M.D
- 電話番号:+201007335293
- メール:ahmed.yousef@mu.edu.eg
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参加基準
適格基準
適格基準
就学可能な年齢
- 大人
健康ボランティアの受け入れ
説明
Inclusion Criteria:
- Teeth with mature apex
- Straight root canal or mild curvature not exceeding(5-10) Schneider.
- Has intact crown ( coronal structure)
- Presence of one orifices and one apices, patency achieved by a #10-15 K-file to the apical foramen
Exclusion Criteria:
- Previous root canal treatment.
- Internal/external resorption.
- Immature root apices.
- Caries/cracks/fractures on the root surface.
- Root canal curvature more than 10 degrees.
- Teeth in which the apical minor constriction was gauged larger than a size 20 hand file.
研究計画
研究はどのように設計されていますか?
デザインの詳細
- 主な目的:処理
- 割り当て:ランダム化
- 介入モデル:並列代入
- マスキング:なし(オープンラベル)
アーム数
武器と介入
参加者グループ / アーム参加者グループ / アーム |
介入・治療介入・治療 |
|---|---|
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アクティブコンパレータ:one curve file
About 15 cases will be subjected to one single file to the full working length.
File will be operated at 300 rpm/2.5 Ncm torque in continuous rotation
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to evaluate and compare the amount of apically extruded debris using the AF One single-file rotary system, featuring a flat-sided design, and the One Curve rotary system in curved mesiobuccal canals of mandibular first molars.
Additionally, this study aims to assess postoperative pain associated with both systems and to investigate the potential correlation between apical debris extrusion and postoperative pain.
他の名前:
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アクティブコンパレータ:AF Fanta flat sided file system
About 15 cases will be subjected to one single file to the full working length.File will be operated at 300 rpm/2.5 Ncm torque in continuous rotation
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to evaluate and compare the amount of apically extruded debris using the AF One single-file rotary system, featuring a flat-sided design, and the One Curve rotary system in curved mesiobuccal canals of mandibular first molars.
Additionally, this study aims to assess postoperative pain associated with both systems and to investigate the potential correlation between apical debris extrusion and postoperative pain.
他の名前:
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この研究は何を測定していますか?
主要な結果の測定
主要な結果の測定
結果測定 |
メジャーの説明 |
時間枠 |
|---|---|---|
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Treatment of Postoperative Pain
時間枠:from 0 hours to 1 week after the procedure
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Pain scores will be recorded on Visual Analog Scale (VAS) using a 0 to 10 pain score basis with 0 being no pain and 10 being the worst pain.
Recording will be done everyday for 7 days period.
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from 0 hours to 1 week after the procedure
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協力者と研究者
捜査官
捜査官
- スタディチェア:Maged Mohamed Negm, Professor、Endodontics Department, Faculty of Dentistry, Cairo University
研究記録日
主要日程の研究
研究開始 (実際)
研究開始
一次修了 (推定)
一次修了
研究の完了 (推定)
研究の完了
試験登録日
最初に提出
最初に提出
QC基準を満たした最初の提出物
QC基準を満たした最初の提出物
最初の投稿 (実際)
最初の投稿
学習記録の更新
投稿された最後の更新 (実際)
投稿された最後の更新
QC基準を満たした最後の更新が送信されました
QC基準を満たした最後の更新が送信されました
最終確認日
最終確認日
詳しくは
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