使用连续或往复式镍钛器械进行弯曲根管预备的多维度分析

Multidimensional Analysis of Curved Root Canal Preparation Using Continuous or Reciprocating Nickel-titanium Instruments.

作者信息

Mamede-Neto Iussif, Borges Álvaro Henrique, Alencar Ana Helena Gonçalves, Duarte Marco Antonio Hungaro, Sousa Neto Manoel Damião, Estrela Carlos

机构信息

Department of Stomatologic Sciences, School of Dentistry, Federal University of Goiás, Goiânia, GO, Brazil.

School of Dentistry, University of Cuiabá, Cuiabá, MT, Brazil.

出版信息

Open Dent J. 2018 Jan 29;12:32-45. doi: 10.2174/1874210601812010032. eCollection 2018.

OBJECTIVE

To evaluate transportation (T) and centering ability (CA) of root canal preparations using continuous or reciprocating nickel-titanium endodontic files.

MATERIALS AND METHODS

Ninety-six mesiobuccal root canals of mandibular first and second molars were randomly divided into 6 groups (n=16) according to the rotary file used: 1. ProTaper Next; 2. ProTaper Gold; 3. Mtwo; 4. BioRaCe; 5. WaveOne Gold; 6. Reciproc. Root canals were prepared according to manufacturer's instructions. Cone beam computed tomography scans were obtained before and after root canal preparation. Measurements were made at six different reference points: 2, 3 and 4 mm from the apex and 2, 3 and 4 mm below furcation in different directions.

RESULTS

The greatest Mesiodistal (MD) Transportation (T) was found for Reciproc files (<0.05), and the greatest buccolingual (BL) T, for Reciproc, ProTaper Gold and ProTaper Next files (<0.05). The greatest Mesiodistal (MD) Centering Ability (CA) was found for BioRaCe files (<0.05), and the greatest Buccolingual (BL) CA, for BioRaCe and Mtwo files (<0.05).

CONCLUSION

All systems produced root canal transportation. No file system achieved perfect CA of root preparation. Reciproc files had the greatest MD T and BL T. BioRaCe files had the greatest MD CA, whereas BL CA was similar for BioRaCe and Mtwo files.

目的

评估使用连续旋转或往复旋转镍钛根管锉进行根管预备时的偏移（T）和定心能力（CA）。

材料与方法

将下颌第一、二磨牙的96个近中颊根管根据使用的旋转锉随机分为6组（n = 16）：1. ProTaper Next；2. ProTaper Gold；3. Mtwo；4. BioRaCe；5. WaveOne Gold；6. Reciproc。按照制造商说明进行根管预备。在根管预备前后进行锥形束计算机断层扫描。在六个不同参考点进行测量：根尖上方2、3和4毫米处以及不同方向分叉下方2、3和4毫米处。

结果

Reciproc锉的近远中（MD）偏移（T）最大（<0.05），Reciproc、ProTaper Gold和ProTaper Next锉的颊舌（BL）偏移最大（<0.05）。BioRaCe锉的近远中（MD）定心能力（CA）最大（<0.05），BioRaCe和Mtwo锉的颊舌（BL）定心能力最大（<0.05）。