Preference of undergraduate students after first experience on nickel-titanium endodontic instruments.
10.5395/rde.2016.41.3.176
- Author:
Sang Won KWAK
1
;
Gary Shun Pan CHEUNG
;
Jung Hong HA
;
Sung Kyo KIM
;
Hyojin LEE
;
Hyeon Cheol KIM
Author Information
1. Department of Conservative Dentistry, School of Dentistry, Pusan National University, Dental Research Institute, Yangsan, Korea. golddent@pusan.ac.kr
- Publication Type:Original Article
- Keywords:
Nickel-titanium file;
Reciprocating;
Rotary;
Preference;
Undergraduate student
- MeSH:
Humans;
Molar;
Root Canal Preparation;
Students, Dental
- From:Restorative Dentistry & Endodontics
2016;41(3):176-181
- CountryRepublic of Korea
- Language:English
-
Abstract:
OBJECTIVES: This study aimed to compare two nickel-titanium systems (rotary vs. reciprocating) for their acceptance by undergraduate students who experienced nickel-titanium (NiTi) instruments for the first time. MATERIALS AND METHODS: Eighty-one sophomore dental students were first taught on manual root canal preparation with stainless-steel files. After that, they were instructed on the use of ProTaper Universal system (PTU, Dentsply Maillefer), then the WaveOne (WO, Dentsply Maillefer). They practiced with each system on 2 extracted molars, before using those files to shape the buccal or mesial canals of additional first molars. A questionnaire was completed after using each file system, seeking students' perception about 'Ease of use', 'Flexibility', 'Cutting-efficiency', 'Screwing-effect', 'Feeling-safety', and 'Instrumentation-time' of the NiTi files, relative to stainless-steel instrumentation, on a 5-point Likert-type scale. They were also requested to indicate their preference between the two systems. Data was compared between groups using t-test, and with Chi-square test for correlation of each perception value with the preferred choice (p = 0.05). RESULTS: Among the 81 students, 55 indicated their preferred file system as WO and 22 as PTU. All scores were greater than 4 (better) for both systems, compared with stainless-steel files, except for 'Screwing-effect' for PTU. The scores for WO in the categories of 'Flexibility', 'Screwing-effect', and 'Feeling-safety' were significantly higher scores than those of PTU. A significant association between the 'Screwing-effect' and students' preference for WO was observed. CONCLUSIONS: Novice operators preferred nickel-titanium instruments to stainless-steel, and majority of them opted for reciprocating file instead of continuous rotating system.
