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. 2015;10(2):127-30.
Epub 2015 Mar 18.

Radiographic evaluation of root canal fillings accomplished by undergraduate dental students

Hamidreza Yavari  1 , Mohammad Samiei  1 , Shahriar Shahi  1 , Zahra Borna  2 , Amir Ardalan Abdollahi  1 , Negar Ghiasvand  3 , Gholamreza Shariati  1
Affiliations

Radiographic evaluation of root canal fillings accomplished by undergraduate dental students

Hamidreza Yavari et al. Iran Endod J. 2015.

Abstract

Introduction: The purpose of this study was to evaluate the radiographic quality of root canal fillings by fourth-, fifth-, and sixth-year undergraduate students at Tabriz Faculty of Dentistry between 2006 and 2012.

Methods and materials: A total of 1183 root canal fillings in 620 teeth were evaluated by two investigators (and in case of disagreement by a third investigator) regarding the presence or absence of under-fillings, over-fillings and perforations. For each tooth, preoperative, working and postoperative radiographs were checked. The Pearson's chi-square test was used for statistical evaluation of the data. Inter-examiner agreement was measured by Cohen's kappa (k) values. The level of significance was set at 0.05.

Results: Total frequencies of over-filling, under-filling and perforation were 5.6%, 20.4% and 1.9%, respectively. There were significant differences between frequencies of over- and under-fillings (P<0.05). Unacceptable quality, under- and over-fillings were detected in 27.9% of 1183 evaluated canals.

Conclusion: The technical quality of root canal therapies performed by undergraduate dental students using step-back preparation and lateral compaction techniques was unacceptable in almost one-fourth of the cases.

Keywords: Dental Student; Radiographic Evaluation; Root Canal Fillings; Root Canal Treatment; Technical Quality.

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