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Alasvand Javadi, Azin, Jafarzadeh, Mansour, Yazdizadeh, Mohammad, Askari Hasanvand, Neda, Nikoonejad, Shadi, Amiri, Ali. (1402). Comparison of Dentinal Defects Formation in Straight, Moderate and Severely Curved Canals by Three Distinctive Nickel Titanium Instruments: An in vitro Study. سامانه مدیریت نشریات علمی, 24(3), 312-319. doi: 10.30476/dentjods.2022.94475.1787
Azin Alasvand Javadi; Mansour Jafarzadeh; Mohammad Yazdizadeh; Neda Askari Hasanvand; Shadi Nikoonejad; Ali Amiri. "Comparison of Dentinal Defects Formation in Straight, Moderate and Severely Curved Canals by Three Distinctive Nickel Titanium Instruments: An in vitro Study". سامانه مدیریت نشریات علمی, 24, 3, 1402, 312-319. doi: 10.30476/dentjods.2022.94475.1787
Alasvand Javadi, Azin, Jafarzadeh, Mansour, Yazdizadeh, Mohammad, Askari Hasanvand, Neda, Nikoonejad, Shadi, Amiri, Ali. (1402). 'Comparison of Dentinal Defects Formation in Straight, Moderate and Severely Curved Canals by Three Distinctive Nickel Titanium Instruments: An in vitro Study', سامانه مدیریت نشریات علمی, 24(3), pp. 312-319. doi: 10.30476/dentjods.2022.94475.1787
Alasvand Javadi, Azin, Jafarzadeh, Mansour, Yazdizadeh, Mohammad, Askari Hasanvand, Neda, Nikoonejad, Shadi, Amiri, Ali. Comparison of Dentinal Defects Formation in Straight, Moderate and Severely Curved Canals by Three Distinctive Nickel Titanium Instruments: An in vitro Study. سامانه مدیریت نشریات علمی, 1402; 24(3): 312-319. doi: 10.30476/dentjods.2022.94475.1787

Comparison of Dentinal Defects Formation in Straight, Moderate and Severely Curved Canals by Three Distinctive Nickel Titanium Instruments: An in vitro Study

Journal of Dentistry
مقاله 6، دوره 24، شماره 3 - شماره پیاپی 80، آذر 2023، صفحه 312-319    اصل مقاله (346.44 K)
نوع مقاله: Original Article
شناسه دیجیتال (DOI): 10.30476/dentjods.2022.94475.1787
نویسندگان
Azin Alasvand Javadi1؛ Mansour Jafarzadeh* 2؛ Mohammad Yazdizadeh2؛ Neda Askari Hasanvand1؛ Shadi Nikoonejad1؛ Ali Amiri1
1Dentist, Ahvaz, Iran.
2Dept. of Endodontics, Faculty of Dentistry, Ahvaz Jundishapur University of Medical Sciences, Dey St, Golestan Blvd, Ahvaz, Iran.
چکیده
Statement of the Problem: It is stated that engine-driven instruments might cause dentinal defects during root canal preparation. These defects might spread and progress into greater fractures or vertical root fracture.
Purpose: This study aimed to compare the incidence of dentinal defects that might arise all through preparation of root canals, using One Shape, RaCe, and WaveOne systems in canals with a curvature (0-20°) and (20-40°).
Materials and Method: In this in vitro study, 150 mandibular first molars were enrolled. Based on the degree of curvature in the mesial roots, the samples were divided into two groups (n=75) of straight and moderately curved canals (0-20º), and severely curved canals (20-40°). Then each group was randomly divided into four sub-groups. In subgroups 1 to 3 from each group, canals were prepared using WaveOne, One Shape, and RaCe. Then all roots were sectioned at 3, 6 and 9-mm distances from the apex. The slices were evaluated using stereomicroscope at 12× magnification. The data were analyzed using the Chi-square and Fisher’s exact tests and the level of significance was set at 0.05.
Results: Fracture and other defects were not found in the control groups. In canals with curvature (0-20°), WaveOne caused the maximum dentinal defects and RaCe produced the least. Moreover, in canals with curvature (20-40°), One Shape caused the maximum dentinal defects while WaveOne and RaCe caused equal dentinal defects approximately.
Conclusion: There was a statistically significant relationship between the performance of RaCe and One Shape in canals with curvature (0-20º) and (20-40º), (p Value< 0.05) while no statistically significant difference was observed in connection to the performance of WaveOne (p> 0.05).

تازه های تحقیق

Azin Alasvand Javadi Google Scholar

Mansour Jafarzadeh Google Scholar

کلیدواژه‌ها
Cracked Tooth Syndrome؛ Dentin؛ Nitinol؛ Root canal preparation؛ Root fracture
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