Obtura System の根尖部到達度および新しい応用法の開発に関する研究
スポンサーリンク
概要
- 論文の詳細を見る
The Obtura System (Ob), one of the thermoplasticized injectable gutta-percha delivery systems, has been reported to have a good adaptation within the root canal system three-dimensionally. It has been demonstrated that the apical seal obtained with Ob was as effective as that produced by the lateral condensation method (LCM) when a sealer was used. In addition, the short chair-time is an advantage of Ob. However, one of the problems that has been reported was the lack of apical control with possible extrusion of Ob gutta-percha through the apical foramen. There were few investigations about the obturating length control of Ob gutta-percha. There were no studies of apical root canal preparation methods on the inhibition of gutta-percha extrusion. In this study, the first purpose was to evaluate the effect of the size of the apical seat (AMF) and the insertion depth of the Applicator tip on the obturating length control of Ob gutta-percha using transparent root canal models with apical openings. The second purpose was to evaluate the effect of apical root canal preparation methods on the inhibition of gutta-percha extrusion. The third purpose was to develop an appropriate usage of Ob for the obturating length control, which was combined with Opion carrier. LCM was used as a control group. The obturation time needed for each method was also measured. The length control of gutta-percha was evaluated on X-ray film using a Color Image Processor (SPICCA, Nippon Avionics co.) by measuring from the apical portion of gutta-percha to the apical seat in a 0.1 mm interval. The results were as following : 1. To provide the good length control with Ob, it was suggested that the insertion depth of the Applicator tip should be 3 to 5 mm forward the crown from the apical seat. 2. The apical step technique and the step back technique showed that an apical stop to prevent extrusion of Ob gutta-percha from the apical foramen was stronger than the Gross-man technique. 3. It was suggested that the Grossman technique when it had the AMF more than #55 also provided a fair apical stop. 4. Because Ob combined with Opion carrier could actually secure the working length during root canal obturation, it might produce the best constant length control. 5. The obturation time for Ob combined with Opion carrier was only 76 seconds, which was about half of the time for LCM. On the bases of the foregoing findings, we concluded that Ob combined with Opion carrier could be used effectively for the obturating length control.
- 1993-12-25
著者
関連論文
- 根管充填に関する走査電顕的研究 : 第 3 報 Injection-molded thermoplasticized method の評価
- 根管充填に関する走査電顕的研究 : 第 2 報 Thermomechanical condensation method の評価
- 超音波洗浄に併用する各種洗浄剤がおよぼす根管洗浄効果の走査電顕的評価
- 新型洗浄針を用いた根管洗浄の走査電顕的評価
- 超音波振動による根管拡大, 清掃法の走査電顕的評価
- 根管拡大清掃後の根管内壁面の走査電顕的研究(第 4 報)
- A-16-1700 電場刺激による歯周組織再生の実験的研究 : GTR法への応用
- 症例2
- 超音波振動を応用した根管充填に関する基礎的研究 : 第 2 報 Obtura と TCM の評価
- 根管充填に関する走査電顕的研究(第 1 報)
- 根管清掃効果に及ぼす超音波振動の影響に関する走査電顕的観察 : 根中央部と根尖部との比較
- 超音波振動を応用した根管拡大・清掃に関する研究
- 上顎第 1 大臼歯の 4 根管について
- 各種根管清掃剤使用後の根管内壁面の走査電顕的研究
- 根管拡大清掃後の根管内壁面の走査電顕的研究(第 1 報)
- 超音波振動を応用した根管充填に関する基礎的研究 : 第 1 報 Lateral condensation method と Vertical condensation method の評価
- 超音波振動を応用した根管拡大・清掃に関する研究 : 細い彎曲根管の清掃効果
- 根管充填材の新しい除去溶剤『GP-ソルベント』の臨床使用に関する研究
- 細い彎曲根管の根管清掃に関する研究 : 第 2 報 超音波根管洗浄を行った場合の清掃効果
- 細い彎曲根管の根管清掃に関する研究 : 第 1 報規格洗浄針を用いた場合の清掃効果
- 超音波根管洗浄後の根管充填に関する走査電顕的研究 : 第 2 報 Thermomechanical condensation method と Injection-molded thermoplasticized method の評価
- 根管清掃剤の濃度と効果に関する走査電顕的研究 : 第 1 報規格洗浄針を用いた場合の清掃効果
- 超音波洗浄後の根管充填に関する走査電顕的研究 : 第 1 報 Lateral condensation method と Vertical condensation method の評価
- Obtura System の根尖部到達度および新しい応用法の開発に関する研究