Impact of root canal curvature and instrument type on the amount of extruded debris during retreatment
Makaleler > Tam Makale · 2021
Yazarlar: Burcu ŞEREFOĞLU POLAT, Gözde KANDEMİR DEMİRCİ, Seniha Senem MİÇOOĞULLARI, İlknur Kaşıkçı Bilgi, Mehmet Kemal ÇALIŞKAN
Restorative Dentistry&Endodontics, ESCI İndekslerine Giren Dergi, Uluslararası, 2021, cilt 46, ss 1-13
Özet
<div class="page" title="Page 1"><div class="layoutArea"><div class="column"><p><span style="font-size: 10pt; font-family: National; font-weight: 700; color: rgb(255, 0, 0);">Objectives: </span><span style="font-size: 10pt; font-family: QuadraatOT;">The aim of the current study was to assess whether the amount of extruded debris differs for straight and severely curved root canals during retreatment using H-files, R-Endo, Reciproc and ProTaper Universal Retreatment (PTU-R) files. Additionally, the area of residual filling material was evaluated.<br></span><span style="font-size: 10pt; font-family: National; font-weight: 700; color: rgb(255, 0, 0);">Materials and Methods: </span><span style="font-size: 10pt; font-family: QuadraatOT;">Severely curved (</span><span style="font-size: 10pt; font-family: QuadraatOT; font-style: italic;">n </span><span style="font-size: 10pt; font-family: QuadraatOT;">= 104) and straight (</span><span style="font-size: 10pt; font-family: QuadraatOT; font-style: italic;">n </span><span style="font-size: 10pt; font-family: QuadraatOT;">= 104) root canals of maxillary molar teeth were prepared with WaveOne Primary file and obturated with gutta- percha and AH Plus sealer. Root canal filling materials were removed with one of the preparation techniques: group 1: H-file; group 2: R-Endo; group 3: Reciproc; group 4: PTU-R (</span><span style="font-size: 10pt; font-family: QuadraatOT; font-style: italic;">n </span><span style="font-size: 10pt; font-family: QuadraatOT;">= 26). The amount of extruded material and the area of the residual filling material was measured. The data were analyzed with 2-way analysis of variance (ANOVA) and 1-way ANOVA at the 0.05 significance level.<br></span><span style="font-size: 10pt; font-family: National; font-weight: 700; color: rgb(255, 0, 0);">Results: </span><span style="font-size: 10pt; font-family: QuadraatOT;">Except for Reciproc group (</span><span style="font-size: 10pt; font-family: QuadraatOT; font-style: italic;">p </span><span style="font-size: 10pt; font-family: QuadraatOT;">> 0.05), PTU-R, R-Endo, and H-file systems extruded significantly more debris in severely curved canals (</span><span style="font-size: 10pt; font-family: QuadraatOT; font-style: italic;">p </span><span style="font-size: 10pt; font-family: QuadraatOT;">< 0.05). Each file system caused more residual filling material in severely curved canals than in straight ones (</span><span style="font-size: 10pt; font-family: QuadraatOT; font-style: italic;">p </span><span style="font-size: 10pt; font-family: QuadraatOT;">< 0.05). </span><span style="font-size: 10pt; font-family: National; font-weight: 700; color: rgb(255, 0, 0);">Conclusions: </span><span style="font-size: 10pt; font-family: QuadraatOT;">All instruments used in this study caused apical debris extrusion. Root canal curvature had an effect on extruded debris, except for Reciproc system. Clinicians should be aware that the difficult morphology of the severely curved root canals is a factor increasing the amount of extruded debris during the retreatment procedure.</span></p></div></div></div>